Leitch 6800 Series

6800/7000 SeriesAudio and VideoMulti-Demultiplexing ProductsInstallation and Operation Manual

175-000061-00Edition B

Trademarks and Copyright

ADAC, ADCOE, BO/S, Command Control System (CCS), DigiBus, DigiPeek, Digital Glue, DPS, DigiWorks, DTV Glue, Engineering The Big Picture, EventWORKS, EZ HD, Focused on the Future, Genesis, HDTV Glue, HEDCO, Innovision, ISIS, JUNO, LeFont, Leitch, Leitch Network Systems, LNS, LogoMAX, LogoMotion, Media File, MediaPort, MIX BOX, Monarch, Motion File, NEO, OPUS, PanelMAPPER, Pilot, Portal, PROM-Slide, RouterWORKS, StillFile, Still Net, Tekniche, Unilock, VIA, ViewGuard, Xplus, and Leitch XPRESS are trademarks or registered trademarks of Leitch Technology Corporation in the United States, Canada, and/or other countries.All other trademarks are the property of their respective owners.Copyright 2002, Leitch Technology Corporation. All rights reserved. Printed in Canada.

6800/7000 Series Audio and Video

Multi-Demultiplexing Products

Installation and Operation Manual

Edition B

November 2002

Preface

Purpose

This manual details the features, installation procedures, operational procedures, and specifications of the 6800/7000 Series of Audio and Video Multi/Demultiplexing Products.

Audience

This manual is written for technicians and operators responsible for installation, setup, and/or operation of the 6800/7000 Series of Audio and Video Multi/Demultiplexing Products.

Writing Conventions

To enhance your understanding, the authors of this manual have adhered to the following text conventions:

Bold Indicates dialog box, property sheet, field, button, checkbox, listbox, combo box, menu, submenu, window, list, and selection names.

Italics Indicates email addresses, names of books and publications, and first instances of new terms and specialized words that need emphasis.

CAPS Indicates a specific key on the keyboard, such as ENTER, TAB, CTRL, ALT, DELETE.

Code Indicates variables or command-line entries, i.e., a DOS entry, something you type into a field, etc.

> Indicates direction of navigation through a hierarchy of menus and windows.

hyperlink Indicates a jump to another location in the document or elsewhere (such as a website).

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual iii

Preface

Revision History

Edition Date Revision History

A May 1998 Initial release.

B November 2002 • Updated information.

• General reformatting and reorganization of material.

iv 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Preface

Summary of the 6800/7000 Series Product Manuals

Audio/Video/Mux and Demultiplexing ManualChapter 1 ADC-6801 CAV to SDI Converter Module

Chapter 2 ADC-6880 Analog to AES/EBU Digital Converter

Chapter 3 ADM/ASM-680x Embedded Audio Monitoring Module

Chapter 4 DAC-6801 Digital to Analog Component Converter

Chapter 5 DAC-6880 AES/EBU Digital Audio to Analog Audio Converter

Chapter 6 DEC-6801/DES-6801 Decoder/Decoder with Frame Synchronizer Module

Chapter 7 DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

Chapter 8 ENC-ENS/ENX-6801A Encoder Modules

Chapter 9 MXA-6800-AES and MXA-6801-A2/A4 Audio Multiplexer Module

Chapter10 VFS-6801 Serial Component Frame Synchronizer Module

Chapter 11 VTS-6801 Video Timing Switcher

Appendix A Embedding Modes Graphic Description

Test Series ManualChapter 1 VTG-6801-1 &VTG-6801-1A 4:2:0 & 4:2:2 Serial Digital

Test Generator Module

Chapter 2 VTG-6801-2 Serial Digital Test Generator Module

Chapter 3 DAR-6880 AES/EBU Digital Audio Reference and Tone Generator

Chapter 4 SAI-6800 4:2:2 Safe Area Generator/Inserter Module

Chapter 5 VTG-6800 MIXBOX Frame and Control Assembly

Chapter 6 EDH-6800MB Detection and Handling MIXBOX

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual v

Preface

Distribution and Routing ManualChapter 1 AES-6880 AES/EBU Digital Audio Distribution Amplifier

Module - General

Chapter 2 DNH-6800 DigiNet Hub Module

Chapter 3 EDH-6800-2EDH Detection/Insertion Serial Distribution Amplifier Module

Chapter 4 USM-6800 PAL/NTSC Monitoring Encoder Module

Chapter 5 VDA-6830 Video Distribution Amplifier Module

Chapter 6 VEA-6830 Video Equalizing Amplifier Module

Chapter 7 VEA-6840 Video Equalizing Amplifier Module

Chapter 8 VPD-6830 Programmable Video DA series

Chapter 9 VSD-6801 Serial Digital Distribution Amplifier Module

Chapter 10 VSE-6801 Serial Equalizing Amplifier Module

Chapter 11 VSE-6802 Serial Equalizing Distribution Amplifier

Chapter 12 VSM-6802 Digital Composite Video Signal

Chapter 13 VSM-6804 Digital Composite Video Signal Monitor Module

Chapter 14 VSR-4041 Serial Video Router Module

LogoMotion ManualChapter 1 Logo Utilities for 6800 Series Modules

Chapter 2 LGI-6801 Serial Digital Logo Generator/Inserter Module

Chapter 3 VES-6801 Flash EPROM Side Module

Chapter 4 DSK-6801/3 Downstream Serial Keyer

Chapter 5 DSK-CP1/2 Downstream Serial Keyer Control Panel

vi 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Preface

Frames and Power Supply ManualChapter 1 Mounting Frames

Chapter 2 FR-6801/FR-6801-1 Frames

Chapter 3 FR-6804/FR-6804-1 Frames

Chapter 4 CF-6801 Cooling Frame

Chapter 5 FR-7001 and FR-7000MB MIXBOX

Chapter 6 6801PS Power Supply Module

Chapter 7 6804(-1) Power Supply Module

Chapter 8 7000 Power Supply Module

Chapter 9 6801PS-48 Power Supply Module

Chapter 10 6804PS-1-48 Power Supply Module

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual vii

Preface

Unpacking/Shipping InformationThis product has been carefully inspected, tested and calibrated before shipment to ensure years of stable and troublefree service. Please check the equipment for any visible damage which may have occurred during transit.

Please confirm that all items listed on the packing list have been received. If any item on the packing list is missing, please contact your Leitch dealer. If any item is damaged, please contact the carrier. Ensure that all packaging material is removed from the product and its associated components before installing the unit.

It is suggested that you keep at least one set of original Leitch packaging, in the event that a product needs to be returned for service. If the original packaging is not available, you can purchase replacement packaging from Leitch at a modest cost or supply your own packaging as long as it meets the following criteria:

• Packaging must be able to withstand the product weight.

• Product must be held rigid within the packaging.

• There must be at least 2 inches of space between the product and the container.

• The corners of the product must be protected.

Products that are being returned to Leitch for servicing should be shipped prepaid in the original packaging material if possible. If the product is still within the warranty period, the product will be returned by prepaid shipment after servicing.

Installation InformationIf this product is rack-mountable, it should be mounted in an appropriate rack using the rack-mounting positions and rear support guides provided. It is recommended that each frame be connected to a separate electrical circuit for protection against circuit overloading. If this product relies on forced air cooling, it is recommended that all obstructions to the air flow be removed prior to mounting the frame in the rack.

If this product has a provision for external earth grounding, it is recommended that the frame be grounded to earth via the protective earth ground on the rear panel.

viii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Preface

Important Safety InstructionsReview the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions.

Servicing

Only qualified personnel should perform service procedures. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

Safety Terms and Symbols

Terms and Symbols in This Manual

Terms and Symbols on the Product

WARNING: Statements identifying conditions or practices that can result in personal injury or loss of life: High voltage is present. Uninsulated dangerous voltage within the product’s enclosure may be sufficient to constitute a risk of electric shock to persons.

CAUTION:Statements identifying conditions or practices that can result in damage to the equipment or other property: Important operating and maintenance (servicing) instructions in the literature accompanying the product.

DANGER: High voltage and indicates a personal injury hazard immediately accessible as one reads the marking.

WARNING: Indicates a personal injury hazard not immediately accessible as one reads the marking.

CAUTION: Indicates a hazard to property including the product or to take attention and refer to the manual.

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual ix

Preface

Injury Precautions

Protective ground (earth) terminal.

Fuse: Replace with same type and rating of fuse.

Observe precautions for handling electrostatic-sensitive devices.

WARNING!To reduce the risk of electric shock, do not expose this apparatus to rain or moisture.

WARNING! Potentially lethal voltages are present within this product’s frame during normal operation. The AC power cord must be disconnected from the frame before the top panel is removed. (In frames with multiple power supplies, remove ALL power cords.) Power should not be applied to the frame while the top is open, unless properly trained personnel are servicing the unit.

[PL Poland] Przod zdjeciem pokrywy wyciagnac wtyczke z gniazda sieciowego.

[French] AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR. INSTALLER SUR SUPPORT DE MONTAGE SEULEMENT.

RISK OF ELECTRIC SHOCKDO NOT OPEN

CAUTION

x 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Preface

AVIS - Risque de choc electrique. Ne pas ouvrir.

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xi

Preface

Use Proper Power CordTo avoid fire hazard, use only the power cord specified for this product.

Ground the ProductDo not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

[United Kingdom] WARNING: THIS APPLIANCE MUST BE EARTHED.

[Sweden] APPARATEN SKALL ANSLUTAS TILL JORDAT UTTAG NÄR DEN ANSLUTS TILL ETT NÄTVERK.

Do Not Operate Without CoversTo avoid electrical shock or fire hazard, do not operate this product with covers or panels removed.

Use Proper FuseTo avoid fire hazard, use only the fuse type and rating specified for this product.

Do Not Operate in Wet/Damp ConditionsTo reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

Do Not Operate in an Explosive AtmosphereTo avoid injury or fire hazard, do not operate this product in an explosive atmosphere.

Avoid Exposed CircuitryTo avoid injury, remove jewelry such as rings, watches, and other metallic objects. Do not touch exposed connections and components when power is present.

xii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Preface

Product Damage Precautions

Use Proper Power SourceDo not operate this product from a power source that supplies more than the specified voltage.

Use Proper Voltage SettingBefore applying power, ensure that the line selector is in the proper position for the power source being used.

Provide Proper VentilationTo prevent product overheating, provide proper ventilation.

Do Not Block Any Ventilation OpeningsDo not block any of the ventilation openings. Install in accordance with the manufacturer’s instructions.

Only Use Attachments/Accessories Specified by the Manufacturer

Do Not Operate With Suspected FailuresRefer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

For Products with Multiple Power Cords:CAUTION: This unit can have more than one power supply cord. To de-energize the internal circuitry, disconnect all power cords before servicing.

[Norwegian] ADVARSEL: Utstyret kan ha mere ennn en tilførselsledning. For å gjore interne deler spennigsløse må alle tilførselsledningene trekkes ut.

[Sweden] VARNING: Denna apparat har mer än en nätanslutning. Samtliga nätkablar måste bortkopplas för att göra de interna kretsarna spänningsfria.

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xiii

Preface

Do Not Use This Apparatus Near WaterDo not expose this apparatus to dripping or splashing water. Ensure that no objects filled with liquid, such as vases or cups, are placed on the apparatus.

Clean Only With A Dry Cloth

Keep Product Away from Heat SourcesDo not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

Install Near Socket OutletThe equipment shall be installed near the socket outlet, and a disconnect device shall be easily accessible.

Protect the Power CordProtect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

Attention:Observe precautions for handling electrostatic-sensitive devices. See “Preventing Electrostatic Discharge” below for details.

Fuse Replacement:CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE OF FUSE.[French]ATTENTION: REMPLACER UNIQUEMENT PAR UN FUSIBLE DE MEME TYPE.

xiv 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Preface

Battery Use Warnings

CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY PLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISCARD USED BATTERIES ACCORDING TO THE MANUFACTURER’S INSTRUCTIONS.

[FI Finland] VAROITUS: Paristo voi rajahtaa, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan valmistajan suosittelemaan tyyppun. Havita kaytetty paristo valmistajan ohjeiden mukaisesti.

[SE Sweden] VARNING: Explosionsfara vid felaktigt batteribyte. Anvand samma batterityp eller en eller en ekvivalent typ som rekommenderas av tillverkaren. Kassera anvant batteri enligt fabrikantens instruktion.

[D Denmark]

[KO Korean]

Advarsel! Lithiumbatteri. Eksplosionsfare ved fejlagtig handtering. Udskiftning ma kun ske med batteri af samme fabrikat oq type. Lever det brugte batteri tilbage till leverandoren.

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xv

Preface

Preventing Electrostatic Discharge

CAUTION: Electrostatic discharge (ESD) can damage components in the product. To prevent ESD, observe these precautions when directed to do so:

• Use a Ground Strap. Wear a grounded antistatic wrist strap to discharge the static voltage from your body while installing or removing sensitive components.

• Use a Safe Work Area. Do not use any devices capable of generating or holding a static charge in the work area where you install or remove sensitive components. Avoid handling sensitive components in areas that have a floor or benchtop surface capable of generating a static charge.

• Handle Components Carefully. Do not slide sensitive components over any surface. Do not touch exposed connector pins. Handle sensitive components as little as possible.

• Transport and Store Carefully. Transport and store sensitive components in a static-protected bag or container.

xvi 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Preface

Certifications and CompliancesThis product has been tested and found to comply with the following CE, FCC, UL, ICES and CSA standards:

EMC Standards

EN55014 Limits and methods of measurement of radio disturbance characteristics of electric motor-operated and thermal appliances for household and similar purposes, electric tools and similar electric apparatus.

EN55022 Limits and methods of measurement of radio disturbance characteristics of information technology equipment Class A.

EN55103-1 Electromagnetic compatibility—Product family standard for audio, video, audio-visual and entertainment lighting control apparatus for professional use, Part 1: Emission, Environment E4.

EN55103-2 Electromagnetic compatibility—Product family standard for audio, video, audio-visual and entertainment lighting control apparatus for professional use, Part 2: Emission, Environment E4.

EN61000-4-2 Electrostatic discharge requirements “ESD” 2kV CD, 4kV AD.

EN61000-4-3 Radiated radio-frequency electromagnetic field immunity test 1V/m 1kHz 80% AM, 80-1000MHz.

EN61000-4-4 Electrical Fast transient requirements “Burst”, 0.5kV Sig. & Ctrl. Lines 0.5kV a.c. & d.c. Power line, 0.5kV functional earth.

EN61000-4-5 Surge Immunity test 0.5kV a.c. Power line.

EN61000-4-6 Immunity to conducted disturbances induced by radio frequency fields 1V rms 0.15-80MHz Sig. & Ctrl. Lines, 3V rms 0.15-80MHz d.c. Power line, 1V rms 0.15-80MHz a.c. Power line, 1V rms 0.15-80MHz functional earth.

EN61000-4-11 Voltage dips, short interruptions and voltage variations-immunity tests.

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xvii

Preface

per the provision of the Electromagnetic Compatibility Directive 89/336/EEC of 3 May 1989 as amended by 92/31EEC of 28 April 1992 and 93/68/EEC, Article 5 of 22 July 1993.

These devices are for professional use only and comply with Part 15 of FCC rules. Operation is subject to the following two conditions:

1. These devices may cause interference to Radio and TV receivers in residential areas.

2. These devices will accept any interference received, including interference that may cause undesired operations.

These devices do not exceed the class A limits for radio noise emissions from digital apparatus as set out in the interference standard entitled “Digital apparatus”, ICES-003 of the Canadian Department of Communications.

Safety Standards

Safety Standards (6801PS-48) Only

EN60065 Safety requirements for mains operated electronic and related apparatus for household and similar general use [IEC 60065: 1985, 5th Edition + A1: 1987 + A2: 1989 + A3: 1992, (modified)], per the provision of the Low-Voltage Directive 73/23/EEC of February 19, 1973, as amended by 93/68/EEC.

UL 1419 Safety requirement for professional Audio and Video equipment.

CSA C22.2No. 1

Safety requirements for audio, video and similar electronic equipment.

EN 60950-1992 Safety of information technology equipment, including electrical business equipment (Amendments A1: 1993, A2: 1993, A3: 1995, A4: 1997), per the provision of the Low-Voltage Directive 73/23/EEC of February 19, 1973 as amended by 93/68/EEC.

UL 1950 Safety of information technology equipment, including electrical business equipment.

CSA C22.2 No. 950-95

Safety of information technology equipment, including electrical business equipment.

xviii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Preface

Safety Standards: (6801PS-1-48) Only

EN 60950-2000 Safety of information technology equipment, including electrical business equipment (IEC-60950:1999), per the provision of the Low-Voltage Directive 73/23/EEC of February 19, 1973 as amended by 93/68/EEC.

UL 1950 Safety of information technology equipment, including electrical business equipment.

CSA C22.2No. 950

Safety of information technology equipment, including electrical business equipment.

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xix

Preface

xx 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Contents

Chapter 1: ADC-6801 CAV to SDI Converter Module............................................................1

Overview ..................................................................................................... 1

Features ....................................................................................................... 2

Specifications .............................................................................................. 3

Input .................................................................................................... 3

Component Analog Input ................................................................... 3

Filtering as per CCIR 601 Specifications ............................................ 4

Frequency Response ........................................................................... 4

Signal to Noise Ratio .......................................................................... 4

Output ................................................................................................. 4

Installation ..................................................................................................5

Module Edge Layout ................................................................................... 6

Setup and Control ....................................................................................... 8

Front Edge Controls ............................................................................ 8

Jumpers .............................................................................................. 10

Standard Select Function .................................................................. 11

Analog Adjustments ................................................................................. 14

Sync Phase ......................................................................................... 14

Cb Gain and Cr Gain ......................................................................... 14

Cb Phase and Cr Phase ...................................................................... 14

Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter................................................15

Overview ................................................................................................... 15

Operation .................................................................................................. 17

Analog Audio Input .......................................................................... 17

External Sampling Reference ............................................................ 18

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xxi

Contents

Configuration ........................................................................................... 19

Attenuation Jumpers ......................................................................... 19

AC- or DC-Coupling ........................................................................ 21

Gain ................................................................................................... 22

Sampling Reference Selection Switch ............................................... 23

Sampling Frequency Selection Switch .............................................. 23

Reset Button ...................................................................................... 24

LED Indicators .......................................................................................... 25

Power LED ........................................................................................ 25

Sampling Frequency .......................................................................... 26

External Reference Present ............................................................... 26

External Reference Error .................................................................. 26

Specifications ............................................................................................ 27

Analog Audio Input .......................................................................... 27

Reference Input ................................................................................. 27

Digital Output ................................................................................... 27

Performance Specifications .............................................................. 28

Power Specifications ......................................................................... 28

ADC-6880 ................................................................................................. 29

Implementation Chart ...................................................................... 29

Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules .. 31

Overview ................................................................................................... 31

Frames and Modules ................................................................................ 32

Serial Video Input ............................................................................. 34

Serial Video Outputs (ASM-6800 only) ........................................... 34

Analog Audio Outputs ...................................................................... 35

Balanced Audio Outputs ................................................................... 36

Module Edge Controls and Indicators ............................................. 37

Channel Swap Control ...................................................................... 38

Monitor Swap .................................................................................... 39

Analog Output Levels ....................................................................... 39

Audio Group Selection ..................................................................... 40

Module Edge Indicator Descriptions ............................................... 40

Modules and Adaptors ............................................................................. 41

ASM-6800 Module ............................................................................ 41

ADM/ASM Module .......................................................................... 42

xxii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Contents

Audio Adapters ................................................................................. 43

Jumper Configurations ............................................................................. 44

Chapter 4: DAC-6801 Digital to Analog Component Converter ..................................................47

Overview ................................................................................................... 47

Features ..................................................................................................... 48

Installation ................................................................................................ 49

Front Edge Layout ............................................................................. 49

LEDs .................................................................................................. 50

Front Edge Control ................................................................................... 52

Switches ............................................................................................. 54

Color Bar Levels ................................................................................ 55

Analog Adjustments ................................................................................. 57

Specifications ............................................................................................ 58

Serial Video Input ............................................................................. 58

Component Outputs ......................................................................... 58

Sync Outputs ..................................................................................... 59

Power Consumption ......................................................................... 59

Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter...............................61

Overview ................................................................................................... 61

Operation .................................................................................................. 63

Input Impedance ............................................................................... 63

Terminated or Looping Inputs ......................................................... 63

Full-Scale Analog Output Level ........................................................ 63

Output Level Adjustment ................................................................. 64

Power and Error Indicators .............................................................. 64

Rear Module/Adapter Connections ................................................. 65

Specifications ............................................................................................ 66

Input .................................................................................................. 66

Output ............................................................................................... 66

DAC-6880 ................................................................................................. 67

Implementation Chart ...................................................................... 67

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xxiii

Contents

Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module ............... 69

Overview ................................................................................................... 69

Specifications ............................................................................................ 70

Analog Video Input .......................................................................... 70

Analog Video Processing .................................................................. 70

Digital Video Processing ................................................................... 70

Serial Video Outputs ......................................................................... 71

Phasing .............................................................................................. 71

Storage ............................................................................................... 71

Reference Input ................................................................................. 71

Power Dissipation ............................................................................. 72

Installation ................................................................................................ 73

Operations ................................................................................................ 74

Controls ............................................................................................. 74

LED Indicators .................................................................................. 74

Jumpers ............................................................................................. 75

Switches ............................................................................................. 75

Frame ID ............................................................................................ 75

Bank A1 ..................................................................................................... 76

Bank B2 ..................................................................................................... 78

Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer ........... 79

Overview ................................................................................................... 79

Features ..................................................................................................... 80

Signal Flow ................................................................................................ 81

Front and Back Modules .......................................................................... 82

Front Module .................................................................................... 82

Back Module and Adhesive Overlay ................................................. 83

Installation ................................................................................................ 85

Jumper Settings ................................................................................. 85

Jumper Configurations .................................................................... 87

Operation .................................................................................................. 88

Overview ............................................................................................ 88

Controls ............................................................................................. 88

LED Indicators .................................................................................. 89

Changing Parameter Settings ............................................................ 91

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Parameter Groups ..................................................................................... 92

Common Parameter Groups A and B (NTSC and PAL-B) ............. 93

Parameter Groups C and D (NTSC) ................................................. 97

Parameter Groups C and D (PAL-B) ................................................ 99

Audio Sync Interface (DES-6804 Only) ................................................. 101

Specifications .......................................................................................... 102

Analog Video Input ........................................................................ 102

Analog Video Processing ................................................................ 102

Digital Video Processing ................................................................. 102

Video Outputs ................................................................................. 103

Phasing (DES-6804) ........................................................................ 104

Storage (DES-6804) ......................................................................... 104

Audio Synchronization Interface Output (DES-6804) .................. 104

Reference Input (DES-6804) .......................................................... 104

Module Start-Up ............................................................................. 105

Typical Power Dissipation .............................................................. 105

Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories ........................... 107

Overview ................................................................................................. 107

Features ................................................................................................... 108

Specifications .......................................................................................... 109

Serial Video Inputs .......................................................................... 109

Video Outputs ................................................................................. 109

Phasing Range .............................................................................. 111

Power Consumption ....................................................................... 111

Reference Inputs ............................................................................. 111

Installation .............................................................................................. 113

Block Diagram ........................................................................................ 114

Deserializer and FIFO Delay .......................................................... 114

Multi-Standard Encoder and Output Buffer ................................. 115

Genlock ........................................................................................... 115

User-Controlled Parameters .................................................................. 116

ENC/ENS-6801 Bank A .................................................................. 116

ENC/ENS-6801 Bank B ................................................................... 117

ENX-6801 Bank A ........................................................................... 118

ENX-6801 Bank B ........................................................................... 119

Delay Mode ..................................................................................... 120

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Contents

Line Store ......................................................................................... 120

Input Signal ..................................................................................... 120

Output Signal .................................................................................. 120

Frame Buffer .................................................................................... 121

Line Buffer ....................................................................................... 121

Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module .............................123

Overview ................................................................................................. 123

Features ................................................................................................... 124

Specifications .......................................................................................... 127

Serial Video Inputs ......................................................................... 127

Serial Video Outputs ....................................................................... 127

Audio ............................................................................................... 128

MXA-6800-AES .............................................................................. 128

MXA-6801-A2/A4 ........................................................................... 128

Terminology .................................................................................... 129

Installation .............................................................................................. 130

Jumper Settings ....................................................................................... 135

MXA-6800-AES .............................................................................. 136

MXA-6800-A2/A4 ........................................................................... 137

Operation ........................................................................................ 137

Common Mode Adjust Potentiometers (pots) .............................. 138

LED Indicators (MXA-6800-AES) ................................................. 138

LED Indicators (MXA-6801-A2/A4) ............................................. 140

Toggle Switch and LED Display Operation .................................... 141

Control Parameters Summary ............................................................... 142

Operator Mode 1 (OS1) .................................................................. 143

Operator Mode 2 (OS2) .................................................................. 145

Operator Mode 3 (OS3) .................................................................. 146

Control Parameter Details ...................................................................... 147

Operator Mode 1 ............................................................................ 147

Operator Mode 2 ............................................................................. 149

Operator Mode 3 ............................................................................. 152

Audio Error Messages ..................................................................... 153

Lock Mode ....................................................................................... 154

Audio Error Messages ..................................................................... 154

Gain Value ....................................................................................... 154

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Switch Position 2 and Function ..................................................... 155

Mute Duration ................................................................................. 155

Stereo Mode .................................................................................... 155

Audio Error Numbers ..................................................................... 155

Swapping Channels via Remote Control ............................................... 156

Audio Embedding ........................................................................... 156

Converting Hex to Decimal Numbers ................................................... 158

MXA-6800-AES ...................................................................................... 159

MXA-6801-A2/A4 .................................................................................. 161

Chapter 10: VFS-6801 Serial Component Frame Synchronizer Module ................................................. 163

Overview ................................................................................................. 163

Specifications .......................................................................................... 164



Phasing ............................................................................................ 165

Storage ............................................................................................. 165

Reference Input ............................................................................... 165

Installation .............................................................................................. 166

Operations .............................................................................................. 167

Controls ........................................................................................... 167

LED Indicators ................................................................................ 167

Jumpers ............................................................................................ 167

Switches ........................................................................................... 168

Chapter 11: VTS-6801 Video Timing Switcher........ 171Overview ................................................................................................. 171

Features ................................................................................................... 172

Specifications .......................................................................................... 173



Analog Reference ............................................................................ 174

Load Supply ..................................................................................... 174

Control ............................................................................................ 174

Operation ........................................................................................ 174

LED Indicators ................................................................................ 175

Toggle Switch and Hex Switch Operation ............................................. 178

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xxvii

Contents

Control Functions ........................................................................... 178

Control Function Details ........................................................................ 180

Replace Serial Time Delay (SW1 – position E) LED and Time Indication ........................................................................................ 183

Input Switching with GPI Controls ........................................................ 185

Polarity Active High ........................................................................ 185

Polarity Active Low ......................................................................... 185

General Issues ......................................................................................... 186

Applications ............................................................................................ 187

Clean-Switch Settings ...................................................................... 187

2- by -1 Clean-Switch Settings ........................................................ 187

Digital Adjusted Line Delay ............................................................ 188

Backup Video Switch ...................................................................... 189

Appendix A: Embedding Modes Graphic Description ...................................................................191

Overview ................................................................................................. 191

Left Mode Justify .................................................................................... 192

Follow Mode Part 1 ................................................................................ 193

Follow Mode Part 2 ................................................................................ 194

Overwrite Mode Part 1 ........................................................................... 195

Overwrite Mode Part 2 ........................................................................... 196

Strip ADS and Left Justify ....................................................................... 197

Strip ADS and Clean ............................................................................... 198

xxviii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Chapter 1

ADC-6801 CAV to SDI Converter Module

OverviewThe ADC-6801 addresses the requirements of broadcasters and video professionals for component analog-to digital 4:2:2 conversion. It provides ten-bit (or optionally eight-bit) conversions from 525 and 625 line analog component signals to SMPTE 259-C serial digital video. The ADC-6801 supports the following standards:

• SMPTE/EBU GBR and YPbPr

• NTSC-related GBR

• MII-related GBR and YPbPr

• BETACAM YPbPr in 625 and 525 line standards, with and without setup as appropriate.

Specifications and designs are subject to change without notice.

6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 1

Chapter 1: ADC-6801 CAV to SDI Converter Module Features

FeaturesThe ADC-6801 has the following features:

• 10-bit default, with option setting for 8-bit conversion

• Component analog input with color space conversion,

GBR or YPbPr

• Looping inputs

• Two serial digital SMPTE 259-C (270 Mb/s) outputs

• Selectable sync from Y/G, external color black or TTL level

• Digital filtering as per CCIR 601 specifications (-12 dB at Nyquist)

• 2x oversampling

• Variable vertical blanking up to line 19 for 525 and line 22 for 625

• EDH insertion

• Horizontal blanking markers for analog blanking indication

• Low power 7.5 W

2 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual

Specifications Chapter 1: ADC-6801 CAV to SDI Converter Module

Specifications

Input

Component Analog Input

Item Specifications

Sampling Rate 27 MHz Y 13.5 MHz Cr/Cb

Quantization 10 bits

Input Standards SMPTE /EBU, MII, Betacam component or RGB at 525 or 625 line rates(External sync and G/Y, B/B-Y, R/R-Y loop through)

5 BNCs • Ext. Sync

• Loop through G/Y

• B/B-Y

• R/R-Y

Item Specifications

Connector BNC per IEC 169-8

Impedance Loop-through high impedance or 75Ω

Signal Level 1 Vp-p nominal with sync, 0.7 Vp-p nominal

Adjustable Gain ± 10%

Time Adjustment Range ± 1.8 µs

Return Loss > 40 dB to 5.5 MHz


Chapter 1: ADC-6801 CAV to SDI Converter Module Specifications

Filtering as per CCIR 601 Specifications

Frequency Response

Signal to Noise Ratio

Output

Item Specifications

Y Channel ± 0.1 dB to 5.5 MHz

Cr, Cb Channels ± 0.2 dB to 2.75 MHz

Item Specifications

On all Channels > 64 dB RMS. relative to 0.714 V, 10 kHz to 5.5 MHz

Interchannel Crosstalk <-50 dB

2T K Factor <0.5%

Luminance Non-linearity <1%

Gain Alignment <1%, typically better than 0.5%

DC Clamping Typically within 1 quantization level on field average

Item Specifications

Output Standard 4:2:2, two BNCs as per SMPTE 259

Input to Output Delay 3.6 µs


Installation Chapter 1: ADC-6801 CAV to SDI Converter Module

InstallationThis module must be installed into an FR-6804 or FR-6804-1 mounting frame to meet CE requirements. The back module layout is shown below and is connected as follows:

Figure 1-1. ADC-6801 Back Module and Overlay

The inputs on the back module are looping. If the loop is not required, external terminations must be connected to the spare BNCs.

The external sync input can be terminated on-board by installing jumper J8 or can be externally looped. See Figure 1-2, on page 7 and see also “Setup and Control”, on page 8 for further information.

Signal Descriptions

Sync In External color black or TTL level sync (optional)

G/Y Green or Y signal (looped)

B/B-Y Blue or B-Y signal (looped)

R/R-Y Red or R-Y signal (looped)

Serial Out SMPTE 259-C serial outputs

ADC-6801-M

SERIALOUT

R/R-YLOOP

B/B-YLOOP

G/YLOOP SYNC

IN

This back module is used when the ADC-6801 module is installed into either a FR-7001 series or FR-7000MB MIX BOX frame. This overlay is used when

the ADC-6801 module is installed into a 6800 series frame.

ADC-6801SYNC

IN

SERIALOUT

G/Y LOOP

B/B-Y LOOP

R/R-Y LOOP


Chapter 1: ADC-6801 CAV to SDI Converter Module Module Edge Layout

Module Edge LayoutThe table below describes the SW1 Hex switch positions and functions:

Position Function

0 Operate

1 Standard Select

2 YCrCb Gain

3 Cb Gain

4 Cr Gain

5 Y Offset

6 Cb Offset

7 Cr Offset

8 H Phase

9 Luma Phase

A Split Screen

B Markers

C Color Bars

D Vertical Blanking

E Factory Recall

F Reserved


Module Edge Layout Chapter 1: ADC-6801 CAV to SDI Converter Module

Figure 1-2. Front Edge Layout and Controls

TOGSW2

LEDsHEXSW1

ADC-6801

525

AUTO

625

LOC

KSM

PTE

BETA

M-II

NTS

CG

BR

Y-Pr

-Pb

SETU

PSY

NC

G/Y

SYN

C T

TLSY

NC

BLK

8BIT

MO

DE

ACTI

VITY

J6: OP/CAL

J7: OP/CAL

ConfigError

J5: OP/CAL

J8: HI-Z / 75U4

System FirmwareSyncPhase

CRPhase

CBPhase

CBGain

CRGain

J5, J6 and J7 must be in OP position for correct board operation.


Chapter 1: ADC-6801 CAV to SDI Converter Module Setup and Control

Setup and Control

Front Edge ControlsThe operation of the ADC-6801 is via the front edge controls, the SW2 TOG (toggle) switch and the SW1 Hex switch. The Hex switch selects the parameter to be adjusted/selected while the Toggle switch performs the adjustment/selection.

SW1 Position Function Purpose SW2

PositionSW2Actions

0 Normal Normal Operation UP DN

No Action

1 Standard Select

Standard selection is achieved by setting the HEX switch in position 1. Toggling SW2 up moves the selection through all of the modes. Toggling SW2 down changes the selection inside of the mode. The Active mode selection is indicated by the current selection LED flashing.

UP DN

Change ModeChange Selection

2 YCrCb Gain

Changes the overall gain on all three channels at the same time to compensate for variable input gains.

UP DN

Increase GainDecrease Gain

3 Cb Gain Changes the gain on the Cb channel independently from the other channels.

UP DN


4 Cr Gain Changes the gain on the Cr channel independently from the other channels.

UP DN



Setup and Control Chapter 1: ADC-6801 CAV to SDI Converter Module

5 Y Offset Changes the DC offset on the Y channel independently from the other channels.

UP DN


6 Cb Offset Changes the DC offset on the Cb channel independently from the other channels.

UP DN


7 Cr Offset Changes the DC offset on the Cr channel independently from the other channels.

UP DN


8 Horizontal Phase

Changes the timing adjustments between the input video and the sync reference. The adjustment is made in 27 MHz (37 ns) increments or decrements.

UP DN


9 Luma Phase

Adjusts the 13.5 MHz cycle time delay between Y and the Cb/Cr channels.

UP DN


A Split Screen Enables a vertical split between the input signal and the internally generated color bars.

UP DN

Enabled Disabled

B Horizontal Markers

Enables the internally generated horizontal markers. The markers indicate the start and end of analog blanking on the digital wider line.

UP DN

Enabled Disabled


PositionSW2Actions



JumpersUse jumper J8 to terminates the external sync input with 75Ω, or leave it at a high impedance (HI-Z) state for use during external loop through of the sync input.

Jumpers J5 and J7 are for factory use only during board calibration and should be in the OP position for correct board operation.

C Internal Color Bars

Enables the internally generated color bars signal.The bars are 100% luma and 75% chroma,100/0/75/0.

UP DN

Enabled Disabled

D Vertical Blanking

Varies the blanking width up to line 19 in 525 and line 22 in 625 standard.

UP DN


E Factory Recall

Recalls the factory auto calibrated levels for the given input. This recall resets all of the user offsets to zero and restores the factory Luma and Horizontal phases. See “Factory Recall Standards” on page 11for further information, it shows the various levels as specified for each standard. Each refers to 100% color bar levels, 100/0/100/0 or 100/7.5/100/0 with setup.

UP DN

RecallRecall

F Reserved


PositionSW2Actions

Internal color bars are not rate limited, so should not be used “on-air”, as they are intended as an alignment aid only.



Standard Select FunctionStandard selection is achieved by setting the SW1 Hex switch to position 1. Toggling SW2 up moves the selection through all of the modes. Toggling SW2 down changes the selection inside the mode. The Active mode selection is indicated by the current selection LED flashing.

The table below describes the modes, selections, and purpose of the Standard select function:

Mode Selections Purpose

Standard 525Auto625

Selects 525 line or 625 line input. The Auto position will automatically determine the input line standard and set the system accordingly.

Format SMPTE BETA MII NTSC

Selects the input format: SMPTE, BETA, MII, or NTSC.Matrix selects the input matrix: GBR or YPbPr.

Matrix GBR YPbPr

Selects the input matrix, GBR, or YPbPr.

Setup On/off Setup consists of On/Off control based on input standard. When On, the setup is removed from the analog signal prior to sampling.

Sync Source C/YBLKTTL

Sync source selects are as follows:

• Internal from Y/G channel

• External color black

• External TTL level

Data Width 10 BIT8 BIT

Data-width is selectable between 10-bit and 8-bit. In 8-bit mode. the sampled 10-bit data is rounded to 8 bits.



525, YPbPr, with No Setup Y B-Y R-Y

SMPTE 700 mV 700 mV 700 mV

**BETA 714 mV 1008 mV 1008 mV

MII 700 mV 648 mV 648 mV

NTSC Invalid

525, YPbPr, with Setup Y B-Y R-Y

SMPTE Invalid

*BETA 714 mVp-p660 mV, 54 mVsetup

934 mV 934 mV

MII 700 mVp-p648 mV, 52 mVsetup

648 mV 648 mV

NTSC Invalid

525, GBR, with No Setup G B R


*BETA Invalid

MII 700 mV 700 mV 700 mV

NTSC 714 mV 714 mV 714 mV

525, GBR, with Setup G B R

SMPTE Invalid

*BETA Invalid

MII-related 700 mVp-p648 mV, 52 mVsetup

700 mVp-p648 mV, 52 mV setup

700 mVp-p648 mV, 52 mVsetup

Illegal standards can be selected, indicated by flashing Activity LED. In this situation, the system software will choose the closest standard and operate from that standard. User offsets to illegal standards are permitted, but they are not stored. See “Standard Select Function” on page 11 for a list of calibrated standard settings.

*Old, non-SMPTE/EBU BETACAM levels.** Used in Japan.




NTSC-related 714 mVp-p660 mV, 54 mVsetup

714mVp-p660mV, 54mV setup

714mVp-p660mV, 54mVsetup

625, YPbPr Y B-Y R-Y

EBU 700 mV 700 mV 700 mV

*BETA non-EBU 700 mV 934 mV 934 mV

MII-related Invalid

NTSC-related Invalid

625, GBR G B R

EBU 700 mV 700 mV 700 mV

BETA Invalid

MII Invalid

NTSC Invalid


Chapter 1: ADC-6801 CAV to SDI Converter Module Analog Adjustments

Analog Adjustments

Sync PhaseSelects fine phasing to the system sync signal within one 27 MHz cycle or 37 ns.

Cb Gain and Cr GainUsed to null the gain errors between the GBR to YPbPr analog matrix. They are set in the factory and there should be no need to adjust them.

Cb Phase and Cr PhaseSelects fine phasing of the CB and CR channels to the Y channel within ± 5 ns. These are set in the factory, and there is no need to readjust them.


Chapter 2

ADC-6880 Analog to AES/EBUDigital Audio Converter

OverviewThe ADC-6880 analog to digital audio converter converts two channels of balanced analog audio into a single AES3-1992 digital audio signal at 20-bit resolution. It can be used in any of the Leitch 6800 or 7000 series frames, and can be used as a standalone A-to-D converter, or in conjunction with several A-to-D converters linked by a common external sampling reference signal. The ADC-6880 is available with 75Ω unbalanced digital outputs when used in the 6800 series frame, or 75Ω unbalanced and 110Ω balanced digital outputs when used in a 7000 series frame.

The ADC-6880 utilizes a 20-bit, 64X oversampling Sigma-Delta A-to-D converter that can sample the audio signal at 48 kHz or 44.1 kHz, based on an external reference signal, or on an internal reference signal generated on board. The audio signal may also be sampled at variable rates from 32 kHz to 50 kHz, based on an external reference signal.

The input to the ADC-6880 can be AC- or DC-coupled, and the input attenuation can be set in calibrated 2 dB increments from +16 dBu to +30 dBu maximum analog audio input levels. A gain control allows continuous adjustment of ± 2 dB.



Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Overview

Figure 2-1. ADC-6880 Block Diagram

Two 110 BalancedAES Outputs

(Only available when installed in 7000 Series frames)

Ω

Four 75 CoaxialAES Outputs

Ω

StereoAnalogAudioInputs

ExternalAES

SamplingReference

InputLevelAdjust

InputLevelAdjust

485Drivers

AESFormatting

20-bitA to D

+

+

-

-

SamplingClock

Generator


Operation Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter

Operation

Analog Audio InputThe ADC-6880 has two balanced audio input channels that are typically used for stereo audio inputs (left and right). The audio input stage processes the analog audio signal prior to its conversion to a digital signal. In order to accommodate various nominal analog audio levels, each input channel has a selectable attenuator that allows the full-scale digital output level (0 dBFS) to correspond to the user’s maximum audio signal level. The attenuator can be set in 2 dB increments from +16 dBu to +30 dBu. The factory default setting is +28 dBu.

Gain can be adjusted on each channel over a ± 2 dB range. The gain adjustments are set at the factory from a high-precision audio test reference signal such that the full-scale digital output level (0 dBFS) corresponds precisely with the calibrated selectable attenuator positions of +16 dBu to +30 dBu (described above). The gain can be adjusted by the user to match specific level requirements for full-scale digital audio signal levels.

In addition to performing audio-level attenuation, the analog input stage allows the analog audio inputs to be AC- or DC-coupled. The factory default is AC-coupled, and this is the recommended mode of operation. If the ADC-6880 is set to DC-coupled, any DC signal present on the analog audio input signals will be a source of error in the A-to-D conversion. The analog input stage rejects common mode signals that may be present on the audio input signals and provides over-voltage protection for the A-to-D converter.

See “Configuration”, on page 19 for detailed information on attenuation/gain setting and AC/DC-coupled selection.


Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Operation

External Sampling Reference The ADC-6880 external sampling reference input is a 75Ω looping BNC input that allows multiple units to be synchronized to a common AES11 sampling reference signal, such as that generated from the Leitch DAR-6880 reference generator. A standard AES3 digital audio signal may also be used. The ADC-6880 cannot accept word clock, or a video signal, as a reference input. The ADC-6880 can be locked to a video signal through the use of Leitch’s DAR-6880 reference generator, which can be locked to video.

See “Attenuation Jumpers”, on page 19 for detailed information on selecting the sampling reference.


Configuration Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter

ConfigurationThere are several settings on the ADC-6880 necessary for proper operation. See “Attenuation Jumpers” below.

Attenuation JumpersThe attenuation jumpers allow the digital output signal level to be set over a 14 dB range, from +16 dBu analog input = 0 dBFS digital output, to +30 dBu analog input = 0 dBFS digital output, in calibrated 2 dB increments. This range of input levels allows operators to set the ADC-6880 such that the full-scale digital output (0 dBFS) will match their maximum analog audio signal level.

Because the attenuation network is of sufficient precision, the gain potentiometers do not have to be readjusted when changing input attenuation jumper settings. This allows you to set the attenuation jumper to the required setting without having to readjust the gain potentiometers.


Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Configuration

.

Figure 2-2. Attenuation Jumper Settings

ADC-6880

Jumpers Level

J1 & J12

J2 & J13

J3 & J14

J4 & J15

J6 & J17

J5 & J16

J7 & J18

J8 & J19

16 dBu

18 dBu

20 dBu

22 dBu

26 dBu

24 dBu

28 dBu

30 dBu

To set the required level, apply jumpersto the proper set of jumper prongs.

This example shows that 28 dBu is selected.



AC- or DC-CouplingThese jumpers allow the analog audio input to be AC- or DC-coupled. AC coupling is the default setting and prevents the ADC-6880 from being disturbed by a DC voltage on the analog input signal.

Figure 2-3. AC- or DC-Coupling Configuration

ADC-6880

For DC coupled input,set J9, J10, J20 and J21

to the DC position as shown.

For AC coupled input,set J9, J10, J20 and J21

to the AC position as shown.

For DC coupled input,set J9, J10, J20 and J21

to the DC position as shown.



GainGain adjustments R113 (left channel) and R15 (right channel) provide approximately ± 2 dB of gain on each channel. This allows the output digital signal level to be matched to a known analog input level from a test generator.

Figure 2-4. Card-Edge View

R15 and R113 aremulti-turn potentiometersused to adjust gain.

R21 and R125 are multi-turnpotentiometers used to adjustcommon mode rejection. These are factory set and adjustment is not normally required.

R15R21

SW3

SW2

AUTOINT

EXT

48 kHz

44.1 kHz

Gain AdjustRight Channel

Green LED

Red LEDYellow LEDGreen LEDGreen LED

PWR

REF ERREXT REF44.1 kHz

48 kHz

Gain AdjustLeft Channel

R125

R113

SW1ResetButton



Sampling Reference Selection SwitchSW3 is an edge-mounted, three-position toggle switch that controls the source of the sampling reference signal. This switch allows the sampling reference source to be switched between Internal, External or Auto mode. The internal sampling rate can be switched between 44.1 kHz and 48 kHz (see Figure 2-4).

Placing SW3 in the Internal mode position forces the ADC-6880 to use one of the internal crystal oscillators as a sampling reference. Depending on the setting of the sampling frequency selection switch (SW2), the ADC-6880 will sample at 48 kHz or 44.1 kHz, and will not be locked to any external sources. This mode is referred to as internal sampling or free run mode.

The auto setting allows the ADC-6880 to look for, and lock to, an external reference signal present on the external reference input. If no signal is present, or if the signal becomes unusable, the ADC-6880 will automatically switch to internal Reference mode. When the external reference signal is present and usable, the ADC-6880 will automatically switch back to external Sampling mode and will be locked to the external reference signal.

The external setting forces the ADC-6880 to lock to the external reference only. If there is no external reference present, or if it becomes unusable, the ADC-6880 will stop sampling audio data until the external reference is restored.

The sampling reference selection switch can be changed during operation of the ADC-6880. The unit does not have to be powered down to change this switch setting.

Sampling Frequency Selection SwitchThe sampling frequency selection switch determines which internal sampling reference the ADC-6880 will use when it is in Internal mode. When in the 48 kHz position, the sampling rate will be 48 kHz.

When in the 44.1 kHz position, the sampling rate will be 44.1 kHz. See Figure 2-6.

When the ADC-6880 is locked to an external reference, this switch will have no effect.



Reset ButtonThe SW1 momentary push button located at the front edge of the ADC-6880 initiates a reset and an internal calibration of the A-to-D converter input circuitry (see “LED Indicators”, on page 25). The internal calibration is also performed each time power is applied to the ADC-6880. The SW1 button is a momentary push button that, when pressed and released, initiates the Reset mode of the A-to-D converter IC. It also mutes the digital data at the output of the ADC-6880. During this reset time (approximately 1 second), the analog audio input signal is disconnected, and the inputs are shorted to ground. This is accomplished via relays RL1 and RL2. Inputs are not shorted to ground.

The reset procedure removes any DC offsets present on the ADC-6880 input circuit and any DC offset in the A-to-D converter IC’s internal input stage.

Figure 2-5. Location of Reset (Calibration) Button

SW3

SW2

INTAUTOEXT

48KHz

44.1KHz

PWR48KHz

44.1KHz

REF ERREXT REF

SW1CAL 1

J1 1

6dB

uJ1

2 16

dBu

J2 1

8dB

uJ1

3 18

dBu

J3 2

0dB

uJ1

4 20

dBu

J15

22dB

u

J5 2

4dB

uJ1

6 24

dBu

J6 2

6dB

uJ1

7 26

dBu

J7 2

8dB

uJ1

8 28

dBu

J8 3

0dB

uJ1

9 30

dBu

J10 J9

AC

DC

J21 J20J21 ADC-6880

SER.NO.SER.NO.

J4 2

2dB

u

R15

R21

R113R125

R15

AC

DC

AC

DC

AC

DC

SW1CAL


LED Indicators Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter

LED IndicatorsLED indicators show power on, sampling rate, lock to an external sampling reference, and external sampling reference source errors.


Power LEDThe green power LED indicates that voltage is present across the +V and -V inputs to the ADC-6880. It does not guarantee that the input power is within the proper ± 6.5 to ± 8.0 V input voltage range. It also does not indicate that each of the voltage regulators is working properly.

R15R21

SW3

SW2

AUTOINT

EXT

48 kHz

44.1 kHz

Gain AdjustRight Channel

Green LED

Red LEDYellow LEDGreen LEDGreen LED

PWR

REF ERREXT REF44.1 kHz

48 kHz

Gain AdjustLeft Channel

R125

R113

SW1ResetButton


Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter LED Indicators

Sampling FrequencyThe green sampling Frequency LEDs indicate if the ADC-6880 is sampling at 48 or 44.1 kHz. If the ADC-6880 is set to External Sampling mode, and the external reference is not at 48 or 44.1 kHz, then the ADC-6880 will indicate that it is locked to an external reference (via the Ref. Pres. LED), but will not have either sampling frequency LED illuminated.

This condition is valid, but the external reference signal must be between 32 and 50 kHz for the A-to-D converter IC to be able to lock to it.

External Reference PresentThe yellow Ext Ref LED indicates that an external reference is present, the ADC-6880 is locked to it and using it as the sampling reference. If the ADC-6880 is set to internal sampling reference, then this LED will not be illuminated, even if an external reference is present.

External Reference ErrorThe red external reference Error LED is illuminated when an error on the external reference signal is detected.


Specifications Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter

Specifications

Analog Audio Input

Reference Input

Digital Output

Item Specifications

Input Number 2 channels of balanced analog audio

Input Coupling AC- or DC- coupled, selectable

Input Impedance > 30 kΩ

Maximum Input Level

+30 dBu

Input Level Settings + 16 dBu to +30 dBu = 0 dBFS, in ± 2.0 dB increments, jumper selectable ± 2.0 dB variable adjustment range

Item Specifications

Reference Signal Type AES11 or AES3 audio reference signal

Input Type BNC, loop-through

Input Impedance >10 kΩ

Item Specifications

Number of Outputsin 6800 Series Frame

4 Outputs @ 75Ω, BNC

Number of Outputsin 7000 Series Frame

2 Outputs @ 110Ω, balanced plus 2

Output Voltage Level for balanced Outputs

3.5 to 5.0 Vp-p into 110Ω load

Output Voltage Level for Coax Outputs

1.0 Vp-p ± 10% into 75Ω 1.0 Vp-p ± 10% into 75Ω


Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Specifications

Performance Specifications

Power Specifications

Item Specifications

Frequency Response ± 0.05 dB, 20 Hz to 20 kHz

Linearity ± 1.0 dB to 100 dBFS

Signal to Noise Ratio > 107 dB, 20 Hz to 20 kHz, A weighted> 102 dB, 20 Hz to 20 kHz, unweighted

THD + N < - 95 dB, 20 Hz to 20 kHz @ -2 dBFS

Item Specifications

Consumption 3.5 W at ± 6.8 VDC

Input Voltage ± 6.4 to ± 7.5 VDC

Current 160 mA on - 6.8 VDC rail350 mA on +6.8 VDC rail


ADC-6880 Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter

ADC-6880

Implementation ChartThe following table describes the functions of the ADC-6880:

Byte Bit Function RX TX Remarks

0 0 [0] Consumer use[1] Professional use

NN

NY

1 [0] Audio[1] Nonaudio

NN

YN

2- 4 (Emphasis) [000] Not indicated[100] No emphasis[110] 50/15 µs[111] CCITT J17

NNNN

NYNN

5 [0] Fs locked[1] Fs unlocked

YY

YY

6- 7 [00] Not indicated[01] 48 KHz[10] 44.1 KHz[11] 32 KHz

NYYY

NYYY

1 0- 3 (Channel mode)

[0000] Not indicated[0001] 2-channel[0010] Mono[0011] Primary/secondary[0100] Stereo[0101] to [1111]

NNNNNN

NNNNYN

4- 7 (User-bit mode)

[0000] Not indicated[0001] 192-bit[0010] AES 18[0011] User-defined[0100] to [1111]

NYNNN

NYNNN

2 0- 2 (Aux. bit usage)

[000] Not indicated[001] Audio data[010] Coord.[011] to [111]

NNNN

YNNN


Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter ADC-6880

3- 5 (Sample length)

[000] Not indicated[100] All other states

NNN

YNN

3 0- 7 Multichannel modes N N

4 0- 1 AES11 sync reference N N

5 0- 7 Unused N N

6- 9 ASCII source ID N N

10- 13 ASCII destination ID N N

14- 17 Local sample address N N

18- 21 Time-of-day address N N

22 0- 7 C data reliability N N

23 0- 7 CRCC N Y

Validity (V) bit N Y

User (U) bit N Y

Audio sampling frequencies (KHz) 32, 44.1, 48 (RX); 48 (TX)

Audio sample word length (bit) 16- 24 bit (RX); 20 bit (TX)



Chapter 3

ADM/ASM-680x Embedded AudioMonitoring Serial Distribution

Amplifier Modules

OverviewThe ADM and ASM series products address the need for low-cost monitoring of audio signals that are embedded within the serial video signal. The ASM provides analog audio outputs while the ADM has both analog and digital (AES) output capability. To view the number and types of outputs provided by each module when mounted in either the FR-680x or FR-7001 series mounting frames. See “Mounting Frames and Modules” on page 32.

Specifications and designs are subject to change without notice


Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Frames and Modules

Frames and Modules

• The ASM-6800 doubles as a serial distribution amplifier providing four reclocked serial outputs and an embedded audio monitor. It also provides two or four analog audio outputs derived from one or two embedded AES/EBU audio channels. The demultiplexed audio channels can be directly monitored via balanced, low-impedance analog audio outputs.

• The ASM-6804 provides four analog audio outputs when used in the FR-680x series mounting frames. The ADM-6800 is capable of providing both analog and digital audio output signals. It has four reclocked serial digital video outputs, two or zero analog audio outputs depending on the mounting frame, and two balanced digital audio output channels.

• The ADM-6804 provides two or four analog audio outputs and two balanced digital audio channel outputs, depending upon the mounting frame used. The ADM-6800C provides four reclocked serial digital video outputs and two single-ended AES channels each with two outputs. The ADM-6804BC, used only in the FR-680x series mounting frames, has two balanced AES output channels and two single-ended AES channels each with two outputs.

Module FrameBack Module/Adaptor

4 SDI Out

Analog Audio

Digital Audio (AES/EBU)

75Ω 110ΩASM-6800-68 FR-680X 6800B-AA Yes 1 Stereo No No

ASM-6800-70 FR-700X ASM-6800-M Yes 2 Stereo No No

ASM-6804-68 FR-680X 6800AA No 2 Stereo No No

ADM-6800-68 FR-680X 6800B-AD Yes None No 2 Stereo

ADM-6800-70 FR-700X ADM-6800-M Yes 1 Stereo No 2 Stereo

ADM-6800-C FR-680X N/A Yes None 2x (2 Stereo) No

ADM-6800-C-70 FR-700X ADM-6800C-M Yes None 2x (2 Stereo) No

ADM-6804-68 FR-680X 6800AD No 1 Stereo No 2 Stereo

ADM-6804-70 FR-700X ADM-6804-M No 2 Stereo No 2 Stereo

ADM-6804-BC-68 FR-680X 6804BC-AA No 1 Stereo 2x (2 Stereo) No

ADM-6804-BC-70 FR-700X ADM-6804BC-M No 2 Stereo 2x (2 Stereo) No


Frames and Modules Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules

• The ADM-6804BBC, used only in FR-7001 frames, has two balanced AES output channels, two single-ended AES channels each with two outputs and two analog audio outputs. The ADM-6804BC (-70 and -68) has two single-ended AES channels each with two outputs and two or four analog audio outputs depending on the mounting frame.

All modules accept composite (143Mb/s) or component (270Mb/s, 525 or 625 line) video with audio multiplexed into the ancillary data area according to SMPTE 272M. The operating mode (incoming serial video data rate) is set by a jumper setting (J2). See Figure 3-6 ‘‘ADM/ASM-680X PCB Jumper and Switch Locations’’ on page 46 for more information.



Serial Video Input

Serial Video Outputs (ASM-6800 only)

Item Specifications

Standards SMPTE: 259M-A; 143 Mb/s, 525 (NTSC)259M-C; 270 Mb/s, 525/625 (NTSC/PAL) component 272M-AB audio embedding


Impedance 75Ω

Return Loss 18 dB to clock frequency

Signal Level 800 mV ±10%

Common Mode Rejection

30 Vp-p, up to 60 Hz

Equalization Automatic up to:21 dB for 143 Mb/s23 dB for 270 Mb/s

Item Specifications

Number of Outputs 4

Standards SMPTE:259M-A; 143 Mb/s, (525 NTSC)272M-AB audio embedding259M-C, 270 Mb/s, 525/625 component


Impedance 75Ω

Return Loss 18 dB to clock frequency


DC Offset 0 V ±0.5 V

Rise and Fall Time 400-700 pS (20 to 80% amplitude)

Overshoot 10% of amplitude (all outputs terminated)



Analog Audio Outputs

Item Specifications

Number of Outputs Up to 2 in 6800 series framesUp to 4 in 7000 series frames

Connector Type Removable barrier strip

Max. Output Level 24 dB @ full scale (balanced)- intended for high Z loads

Peak Output Adjustable from 6 to 24 dBu

Impedance 66 Ω balanced

THD+N 67 dB @ 1 kHz 0 dBFS, typical

Signal to Noise > 90 dB (50-20kHz)E

Inter-channel Crosstalk

> 90 dB (50-20kHz)

Frequency Response(@ full scale output)

• 50 Hz - 10 kHz: 0 ±0.15 dB

• 10 kHz - 20 kHz: 0 -0.3 dB

Power Requirement ASM-68xx

Positive rail: 4.3 WNegative rail: 0.70 WTotal: 5.0 W

Power Requirement ADM-68xx

Positive rail: 4.5 WNegative rail: 2.9 WTotal: 7.4 W

Single-ended Digital Audio Outputs Number of outputs

Number of outputs:2 outputs of both AES Ch1 and AES Ch2

Standards SMPTE 276M-1995 and ANSI S4.40-1992

Impedance 75Ω

Level 1.0 Vpp (±50 mV)

DC Offset 0.0 V (±50 mV)

Rise/fall (10%-90%)33-42 ns

Capable of driving the data over 350 meters of coax

Short Circuit Tolerance

Output still maintains compliance with SMPTE 276M specifications with 1 short per output channel



Balanced Audio Outputs

Figure 3-1. ADM Series Modules

Item Specifications

Number of Outputs 1 output at 1 or 2 AES channels

Standards AES 3-1992/ANSI 54.40-1992

Impedance 110Ω

1 2 3 4

VID_PRESAUD_PRESAUD_ERRNO_LOCK

MAINSWAP

MONITOR/REMOTE

SWAP

DEMUX DACS

AUDIOGROUPSELECT

AES ENCODER DRIVERS

SERIALVIDEO

AESOUTPUTS

ANALOGOUTPUTS

1A

1B

2A

2B



Figure 3-2. ASM Series Modules

Module Edge Controls and IndicatorsSMPTE 272M stipulates that embedded audio must be packaged into groups, and that each group may be comprised of a maximum of two digital audio channels in the AES format. In turn, each AES channel is composed of two monaural audio channels. Thus, one audio group may contain up to four monaural audio channels. For purposes of this manual, the main AES channels are designated as 1 and 2 and the sub-channels as A and B. Therefore, an audio group can be thought of as containing channels 1A, 1B, 2A, and 2B.

1 2 3 4

VID_PRESAUD_PRESAUD_ERRNO_LOCK

MAINSWAP

MONITOR/REMOTE

SWAP

DEMUX DACS

AUDIOGROUPSELECT

SERIALVIDEO

ANALOGOUTPUTS

1A

1B

2A

2B



Channel Swap ControlTwo types of swap control are provided:

• A main swap which routes particular de-embedded audio channels to specific outputs.

• A monitor swap which is used to swap only the analog outputs for monitoring purposes. This swap does not affect the AES digital output routing.

The ASM series modules provide the same module edge-control features as the ADM series, but the ASM provides only analog outputs, making the main and monitor swaps redundant. The user can use either swap to perform the appropriate routing to outputs.

The intention of main swap control is to allow the user to appropriately set the routing of particular audio channels to the specific output connectors. The main swap control affects both analog and digital outputs. SW1 enables a swap between channel pairs 1 and 2. SW2 enables a swap between the A and B channels within each channel pair. This is functionally illustrated inFigure 3-1 ‘‘ADM Series Modules’’ on page 36 and Figure 3-2 ‘‘ASM Series Modules’’ on page 37, and is summarized in the table below:

Main Swap DIP SW1 DIP SW2

No Swaps Down Down

Swap 1 with 2 Up Down

Swap A with B Down Up

Swap 1 with 2, Swap A with b Up Up

Main swap affects both AES and analog audio outputs.



Monitor SwapThe monitor swap control is controlled via convenient toggle switches at the front of the module. As shown in the block diagram, monitor swap only affects the analog output in the ADM series. This allows the user to monitor the analog outputs on the second channel while not affecting the AES outputs.

This is functionally illustrated in the table below:

Remote control of the swap feature is supported when the module is installed in an FR-7001 frame. External contact closures are provided for this feature. This feature is enabled by appropriately setting the Swap Control mode Jumper, J3. See Figure ‘‘Jumper Configurations’’ on page 44 and Figure 3-6 ‘‘ADM/ASM-680X PCB Jumper and Switch Locations’’ on page 46.

Analog Output LevelsPeak analog audio levels are user-adjustable and accessible pots are provided at the front of the modules for calibration purposes. Outputs are factory-set to the following levels:

• European Countries: 18 dBu corresponds to 0 dBFS input (full-scale digital)

• Other: 24 dBu corresponds to 0 dBFS input (full-scale digital)

Main Swap DIP SW2 DIP SW3

Normal Down Down

Swap 1 with 2 Up Down

Swap A with B Down Up

Swap 1 with 2, Swap A with B Up Up

Monitor swap affects the analog audio outputs only.



Audio Group SelectionThe SMPTE 272M standard stipulates that embedded audio is packaged into groups. Serial video at 143Mb/s can only support one audio group, while serial video at 270 Mb/s can support up to four audio groups. (See the table below for the DIP switch settings.)

Module Edge Indicator DescriptionsThe ASM/ADM series modules have the following module edge indicators.

Audio Group DIP SW3 DIP SW4

Group 1 Down Down

Group 2 Up Up

Group 3 Down Down

Group 4 Up Up

For 143 Mb/s serial video applications, Group 1 must be selected.

LED Indicator Function

VID_PRES Indicates the presence of a valid video present or input.

AUD_PRES Indicates the presence of a selected embedded audio group (as specified by DIP switches 3 and 4).

AUD_ERR Indicates an OR function of checksum error, parity error, and data block number error.

UNLOCKED Indicates that the audio clock PLL is not locked to the input video signal; this indicator will also light up in the absence of a valid video input.


Modules and Adaptors Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules

Modules and Adaptors

ASM-6800 ModuleWhen the ASM-6800 module is installed into an FR-7001 frame, the ASM-6800-M back module must be installed onto the rear panel:

Figure 3-3. ASM-6800 Module

ASM-6800-M

ADM-6800-M

CH2

AES

CH1

CH1

A B

1 2

A B

A B

SERIALOUTPUTS

SERIALOUTPUTS

INPUT

INPUT

REMOTE

REMOTE

A/B

A/B

1/2

1/2

1

1

2

2

3

3

4

4

ANALOG

ADM-6804BC-MCH2

CH1

A B

A B

ANALOG OUTPUTS

UNBALANCEDAES OUTPUTS

12

12REMOTE

SERIALINPUT

A/B 1/2

ADM-6804-M

ADM-6800C-M

CH2

CH1

A B

A B

INPUT

REMOTEA/B 1/2

ANALOG OUTPUTS

AESOUTPUTS1 2


SERIALOUTPUTS

SERIALINPUT

1 2 4 2

1 2 3 1

ADM-6804-M

ADM-6800C-M

CH2

CH1

A B

A B

INPUT

REMOTEA/B 1/2

ANALOG OUTPUTS

AESOUTPUTS1 2


SERIALOUTPUTS

SERIALINPUT

1 2 4 2

1 2 3 1


Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Modules and Adaptors

ADM/ASM ModuleWhen an ADM/ASM module is installed into an FR-680x series frame, a corresponding overlay is placed on the rear panel:

Figure 3-4. ADM/ASM Module

ASM-6800SERIALINPUT

SERIAL OUTPUT

ANALOG AUDIOOUTPUT

12

34

1B+ 1B-

1A+ 1A-

ADM-6800SERIALINPUT

SERIAL OUTPUT

AESOUTPUTS

12

34

2+ 2-

1+ 1-

ASM-6804SERIALINPUT

1B+ 1B-

1A+ 1A-

2B+ 2B-

2A+ 2A-

ANALOG AUDIOOUTPUT

ADM-6804SERIALINPUT

AESOUTPUTS

1B+ 1B-

1A+ 1A-

2+ 2-

1+ 1-ANALOG AUDIO

OUTPUT

SERIALINPUT

SERIALINPUT

BALANCEDAES OUTPUTS

SERIALOUTPUTS


ANALOG AUDIOOUTPUTS

1B+ 1B-

1A+ 1A-

ASM-6804-BC

ADM-6804-C


Modules and Adaptors Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules

Audio AdaptersThe 6800AA, 6800AD, 6800B-AA, 6800B-AD, and 6804BC-AA are audio adapters that can be placed on top of the overlay and plugged into the BNCs of the FR-680x series frame for different output formats.

Figure 3-5. Audio Adapters

6800-AA

A(LEFT)

A(LEFT)

B(RIGHT)

B(RIGHT)

CHANNEL 1 CHANNEL 2

6800-AD

A(LEFT)

1B(RIGHT)

2

ANALOGOUTPUTS

AESOUTPUTS

6800B-AA

A B

ANALOGOUTPUTS

6804BC-AA

A B

ANALOGOUTPUTS

6800BC-AD

1 2

AESOUTPUTS


Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Jumper Configurations

Jumper ConfigurationsAll jumpers are factory preset such that the module conforms to the specific type of operation (i.e. model number and associated mounting frame) specified.

Frontof Module

Connectorend of Module

J22J12J21J11

J14J24J13J23

J34J33J32J31

AN/DIG AN/DIG AN/DIG

Jumper Positions within a Jumper Block (component side, top view)

TypeMountingFrame

Required Back Box and Jumper Settings

Jumper block (top view)Front Rear

ADM-6800-68 FR-680X 6800B-AD Rear connector/adapter required, J31, J32, J33, J34 on “DIG” side

ADM-6800-70 FR-7001 ADM6800-M Rear connector/adapter required, J11, J12, J13, J14 on “DIG” sideJ31, J32, J33, J34 on “DIG” side

ADM-6800-C FR-680X No rear connector/adapter requiredJ31, J32, J33, J34 on “DIG” side

ADM-6800-C-70 FR-7001 ADM-6800-M Rear connector/adapter required,J31, J32, J33, J34 on “DIG”side

ADM-6804-68 FR-680X 6800 AD Rear connector/adapter required,J21, J22, J23, J24 on “DIG” sideJ31, J32, J33, J34 on “AN” side

ADM-6804-70 FR-7001 ADM 6804-M Rear connector/adapter required,J11, J12, J13, J14 on “AN” sideJ21, J22, J23, J24 on “DIG” sideJ31, J32, J33, J34 on “AN” side

ADM-6804-BC-68 FR-680X ADM-6804BC-M Rear connector/adapter required,J31, J32, J33, J34 on “AN” side31, J32, J33, J34 on “AN” side

ADM-6804-BC-70 FR-7001 ADM6800-M Rear connector/adapter required,J11, J12, J13, J14 on “AN” sideJ31, J32, J33, J34 on “AN”side


Jumper Configurations Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules

ASM-6800-68 FR-680X 6800B-AA Rear connector/adapter required,J31, J32, J33, J34 on “DIG” side

ASM-6800-70 FR-7001 ASM-6800-M Rear connector/adapter required,J11, J12, J13, J14 on ”AN” sideJ31, J32, J33, J34 on “AN” side

ASM-6804 FR-7001 6800AA Rear connector/adapter required,J21, J22, J23, J24 on “AN” sideJ31, J32, J33, J34 on “AN” side

Jumper Positions within a Jumper Block (component side, top view)

TypeMountingFrame

Required Back Box and Jumper Settings

Jumper block (top view)Front Rear


Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Jumper Configurations

Figure 3-6. ADM/ASM-680X PCB Jumper and Switch Locations


Chapter 4

DAC-6801 Digital to AnalogComponent Converter

OverviewThe DAC-6801 Digital to Analog Component Converter addresses the requirements of broadcasters and video professionals for component digital to analog 4:2:2 conversion. The DAC-6801 supports the following standards in 625 and 525 line standards, with and without setup as appropriate:

• SMPTE/EBU GBR and YPbPr

• NTSC-related GBR

• MII-related GBR and YPbPr

• BETACAM YPbPr



Chapter 4: DAC-6801 Digital to Analog Component Converter Features

FeaturesThe DAC-6801 has the following features:

• 10-bit processing with 14-bit interpolation

• Component analog output with color space conversion, GBR or YPbPr

• Separate sync output

• Dual outputs

• Serial digital SMPTE 259M-C (270 Mb/s) input

• Selectable sync on GBR

• 4x oversampling Y, 8x oversampling PbPr

• Variable vertical blanking up to line 20 for 525 and line 22 for 625

• Low power - 6.5 W

• Color-bar generator

See Figure 4-7 for a functional block diagram of the DAC-6801.

Figure 4-7. DAC-6801 Functional Block Diagram

Program In

Sync out (.3V)

Y/G Out

B/Pb Out

Y/Pr Out

Auto EQ

Flags

Interpolators

1:2

1:2

Program Locking & ControlSync Insertion/blankingColor Bar Generator

Reclock& SP

EDHDetect

EDHDetect

ColorMatrix


Installation Chapter 4: DAC-6801 Digital to Analog Component Converter

InstallationThe DAC-6801 back module connectors are as follows, with two outputs per signal. See Figure 4-8 below.

Figure 4-8. DAC-6801 Back Module Connectors

Front Edge LayoutThe DAC-6801 front-edge layout is shown in the following figure. The two switches on the front are used for setup and control. Hex SW1 has 16 positions, Hex 0 to F. SW2 is a toggle type switch. Press up or down to toggle. See Figure 4-9 on page 50.

Signal Description

Serial In SMPTE 259-C Serial Inputs

G/Y Green or Y signal

B/B-Y Blue or B-Y signal

R/R-Y Red or R-Y signal

Sync Out External color black

SYNCOUT

R/R-Y B/B-Y G/YSERIAL

IN


Chapter 4: DAC-6801 Digital to Analog Component Converter Installation

Figure 4-9. Front Edge Switches/LEDs

LEDsDAC-6801 LEDs illuminate as follows:

ACTIVITY

525AUTO625

ERROR LOCK 1

GBRY, Pr, Pb

SMPTEBETAM-IINTSC

DETENT

LOCK 1LOCK CBPhase

CRPhase

J1 J1 U14System Firmware

HexSw1

ToggleSw2

LEDs Function

525 Indicates the module is running in 525 line mode.

AUTO Indicates the module is running in AUTO mode: the line mode is automatically changed as per the input signal.

625 Indicates the module is running in 625 line mode.

LOCK Indicates the module is locked to the input serial video.

ERROR Indicates the module has detected EDH errors in the input serial video.

SMPTE, BETA, M-11, NTSC

Indicates the current analog level standard, generated at output.

GBR and Y, Pr, Pb

Indicates the current color matrix utilized.

SETUP Indicates setup (pedestal) is added to output video.

SYNC G Indicates sync inserted on G output in GBR mode.


Installation Chapter 4: DAC-6801 Digital to Analog Component Converter

Figure 4-10. DAC-6801 Board Diagram

SYNC B+R Indicates sync inserted on B+R outputs in GBR mode.

DETENT Indicates gain or offset has been modified (from factory settings) with SW1 in Position 0. This LED illuminates as SW1 is rotated (in positions 2 through 7) indicating which parameter has been adjusted for gain and offset. The Detent LED blinks when an invalid standard has been selected; for example, 625 NTSC.

ACTIVITY Indicates calibration activity; used only during alignment.

LEDs Function

ConfigError

J8: HI-Z / 75

J6: HI-Z / 75

J7: HI-Z / 75

J5: HI-Z / 75

U4System Firmware

SyncPhase

CBPhase

CRPhase

CBGain

CRGain


Chapter 4: DAC-6801 Digital to Analog Component Converter Front Edge Control

Front Edge ControlThe DAC-6801 is operated through the front edge controls using Hex SW1 and Toggle SW2. SW1 selects the parameter to be adjusted and SW2 performs the adjustment/selection.

The following table illustrates the DAC-6801 front edge controls:

The Active mode selection is indicated by the flashing LED.

SW1 Position

Name ofFunction Purpose SW2

PositionSW2Actions

0 Operation Normal operation does not require any operator input. There is no action for SW2.

UP DN

No ActionNo Action

1 ModeSelect

Provides the Standard Selection or mode of operation.Perform the following steps to make a selection:

1. Set HEX SW1 to position 1.

2. Toggle SW2 Up to move through all of the Operating modes. The corresponding LED illuminates as the selection is toggled.

3. Toggle SW2 Down to change the selection inside the mode. The corresponding LED illuminates as the selection is toggled.

UP DN

Change ModeChange Selection

2 GBRYPrPb/Gain

Allows the operator to change the overall gain on all three channels at the same time, to compensate for variable output gains.

UP DN


3 Pb/B Gain Allows the operator to change the gain on the Pb Channel independent of the other channels.

UP DN


4 Pr/R Gain Allows the operator to change the gain on the Pr Channel independent of the other channels.

UP DN


5 Y/G Offset This control allows the operator to change the DC offset on the Y channel independent of the other channels.

UP DN

Increase OffsetDecrease Offset


Front Edge Control Chapter 4: DAC-6801 Digital to Analog Component Converter

6 Pb/B Offset This control allows the operator to change the DC offset on the Pb channel independent of the other channels

UP DN


7 Pr/R Offset Allows the operator to change the DC offset on the Pr channel independently from the other channels.

UP DN


8 H Delay This control allows for horizontal timing adjustments (delays) between the input serial video and analog output. The adjustment is made in 37 ns steps (increments or decrements) based on a 27 MHz clock frequency. The range is from a minimum of 5 µs to one line length delay

UP DN

Increase DelayDecrease Delay

9 Not Used Not Used Not Used

A Not Used Not Used Not Used

B Not Used Not Used Not Used

C Internal Color Bars

Enables the Color Bars signal. The bars are 100% luma and 75% chroma: 100/0/75/0. The specified level for each standard refers to 100% color bar levels: 100/0/100/0, 100/7/100/0, or 100/7/.5/100/7.5 for GBR. (See "Color Bar Levels" on page 55)

UP DN

Enabled Disabled

D VerticalBlanking

Allows the operator to vary the blanking width up to line 20 in 525 and line 625 standard.

UPDN

Increase BlankingDecrease Blanking

E Factory Recall

Allows the operator to recall the factory auto calibrated levels for the given input. This recall resets all offsets to zero and restores the factory Luma and Horizontal phases.

UPDN

RecallRecall

F Not Used Not Used

SW1 Position

Name ofFunction Purpose SW2

PositionSW2Actions



SwitchesEach of the switches, functions, and actions, is discussed in the following table:

Mode Selections Purpose

Standard 525AUTO625

Allows the operator to select the input line input. The auto position will automatically determine the input line standard and set the system accordingly.

Format SMPTE BETA MII or NTSC

Allows the user to select the input format.

Matrix GBR or YPbPr Allows the user to select the input matrix.

Setup On/Off • An On/Off control based on the input standard.

• On/Off (enabled), the setup is added to the analog signal in the digital domain.

Sync Source C/YBLKTTL

Sync source selects are as follows:

• Internal from Y/G channel

• External color black

• External TTL level

Data Width 10 BIT8 BIT

Data width is selectable between 10-bit and 8-bit. In 8-bit mode the sampled 10-bit data is rounded to 8 bits.


Front Edge Control Chapter 4: DAC-6801 Digital to Analog Component Converter

Color Bar Levels

525, YPbPr, with Setup Y PB Pr


BETA 714 mV 1008 mV 1008 mV

MII 700 mV 648 mV 648 mV

NTSC Invalid

SMPTE Invalid

BETA 714 mVp-p660 mV, 54 mV setup

934 mV 934 mV

MII 700 mVp-p648 mV, 52 mV setup

648 mV 648 mV

NTSC Invalid

525, GBR, with No Setup G B R


BETA Invalid

MII 700 mV 700 mV 700 mV

NTSC 714 mV 714 mV 714 mV




SMPTE Invalid

BETA Invalid

MII-related 700 mVp-p648 mV, 52 mV setup



NTSC-related 714 mVp-p660 mV, 54 mV setup



625, YPbPr Y PB Pr

EBU 700 mV 700 mV 700 mV

BETA non-EBU 700 mV 934 mV 934 mV

MII-related Invalid

NTSC-related Invalid

625, GBR G B R

EBU 700 mV 700 mV 700 mV

BETA Invalid Invalid Invalid

MII-related Invalid Invalid Invalid

NTSC-related Invalid Invalid Invalid

525, YPbPr, with Setup Y PB Pr


Analog Adjustments Chapter 4: DAC-6801 Digital to Analog Component Converter

Analog AdjustmentsPb Phase and Pr Phase allow fine phasing of the Pb and Pr channels to the Y channel within ± 5 ns. They are set in the factory, and do not need adjusting.


Chapter 4: DAC-6801 Digital to Analog Component Converter Specifications

Specifications

Serial Video Input

Component Outputs

Item Specifications

Standards SMPTE 259M-C; 270 Mb/s, 525/625


Impedance 75Ω

Return Loss > 18 dB to clock frequency


30 Vp-p, up to 60 Hz

Equalization Automatic up to 22 dB

Item Specifications

Number of Outputs 6 BNCs: 2 sets of G/Y, B/B-Y, R/R-Y

Output Standards SMPTE, Betacam, MII, NTSC (Y, B-Y, R-Y, or GBR where applicable)

Impedance 75Ω

Return Loss > 36 dB to 5 MHz on all outputs

Quantizing 10 bits

Gain Adjustable Range

> ± 30%

DC Adjustable Offset ± 5 mV

Frequency Response < ± 0.1 dB to 5 MHz

S/N Ratio > 70 dB

Adjustable Delay ∼5 µs to 1 line

Adjustable Vertical Blanking

10 – 20 lines for NTSC6 – 22 lines for PAL


Specifications Chapter 4: DAC-6801 Digital to Analog Component Converter

Sync Outputs

Power Consumption

Item Specifications

Number of Outputs 2

Output Level 0.3 Vp-p

Item Specifications

6.5 W + 6.5 1A-6.5 35 mA


Chapter 4: DAC-6801 Digital to Analog Component Converter Specifications


Chapter 5

DAC-6880 AES/EBU Digital Audio to Analog Audio Converter

OverviewThe DAC-6880 Digital Audio to Analog Audio Converter converts a standard 20-bit AES3-1992 digital signal to its analog equivalent. The unit is available with a 110Ω balanced input or 75Ω coaxial input. Accepting data at 32 kHz, 44.1 kHz, and 48 kHz, the DAC-6880 is a complete digital audio to stereo analog audio converter. The module receives and decodes data according to the AES3-1992 standard and will identify a loss of input or clock with a card front error LED. The D/A converter utilizes a 128X oversampled delta-sigma modulator and filtering to provide high quality interpretation of 20 bit data.

Converted data is distributed to dual analog stereo outputs (two left, two right). Full-scale analog output level is jumper-selectable for either +18 dBu or +24 dBu with ± 6 dB card front adjustment.

Outputs are subject to Leitch’s high broadcast quality standards. The module is available for use in all 6800 and 7000 series frames, providing an economical standalone unit, as well as a system unit.


The maximum analog output level is +28 dBu.


Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter Overview

Figure 5-1. AES-6880 Functional Block Diagram


Operation Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter

Operation

Input ImpedanceThe DAC-6880 accepts either 110Ω balanced or 75Ω unbalanced digital audio signals. The input impedance is set at the factory by the rear module/adapter ordered and the front card-edge jumpers:

Terminated or Looping InputsThe unit is factory set for looping inputs. To adjust the input impedance to accommodate terminated inputs (non-looping) or looping inputs, use the following instructions:

Full-Scale Analog Output LevelThe full-scale analog output level can be set to +18 dBu or +24 dBu through mid-card jumpers. To set the output level to +18 dBu, set jumpers J3 and J4 to the frontmost position. To set the output level to +24 dBu, set jumpers J3 and J4 to the rear position.

Figure 5-2. DAC-6880 Full-Scale Analog Output Level

• To set to 75Ω: Set jumpers J5 and J6 to front most position

• To set to 110Ω: Set jumpers J5 and J6 to the rear position

• Terminated Inputs: Set jumpers J7 and J8 to the rear position

• Looping Inputs: Set jumpers J7 and J8 to frontmost position

DAC-6880

DC-DCCONVERTER

POWER ON

ERROR

J6J5

J7J8

J3

J418 dBu

24 dBu

18 dBu

24 dBu


Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter Operation

Output Level AdjustmentThe output level may be adjusted ± 6 dB, from the front of the unit, by adjusting the variable resistors R9 and R10.

Power and Error IndicatorsThe DAC-6880 indicates power on with the green Power On LED and input signal error with the red Error LED. Both LEDs are located on the front card edge.


The maximum analog output level is + 28 dBu.

Left

Right

Power On

Error (Red)

(Green)

J6J5

J7J8

R9R10


Operation Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter

Rear Module/Adapter ConnectionsWhen shipped, the modules are set to looping inputs. See “Terminated or Looping Inputs” on page 63.

Figure 5-4. Rear Module/Adapter Connections

Module Frame Input FormatNo. of Analog Outputs

DAC-6880-70B 7001 series 110Ω Balanced AES3-1902

2 Dual(2 left 2 right)

DAC-6880-70C 7001 series 75Ω Coaxial SMPT 276M


DAC-6880-68C 6800 series 75Ω Coaxial SMPT 276M


ANALOG AUDIO OUTPUTS

Left Right RightLeftOutput 1 Output 2

AES Input



Looping Input

3 17 5

4 28 6 AESINPUT

OUTPUTS

Plug InAudio AdapterModule

Rear of6800 SeriesFrame




Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter Specifications

Specifications

Input

Output

Item Specifications

Input Number 1 (20-bit, two-channel AES signal)

Input Coupling Transformer Coupling

Input Impedance/Type

110Ω balanced or 75Ω coaxial

Maximum Input Signal Level

7.0 Vp-p for 110Ω balanced signal1.1 Vp-p for 75Ω coaxial signal

Minimum Input Signal Level

2.0 Vp-p for 110Ω balanced signal100 mVp-p for 75Ω coaxial signal

Item Specifications

Output Number 2 (dual stereo, 2 left, 2 right)

Frequency Response ± 0.1 dB (20 - 20 kHz)

Linearity ± 1.0 dB to -100 dBFS

Signal to Noise Ratio > 100 dB (20 - 20 kHz)

THD+N < 0.004% (20 - 20 kHz @ 0 dBFS = 24 dBu, High Z load)

IMD < -90 dB (CCIF two-tone test @ 0 dBFS = 24 dBu, High Z load)

Full-Scale Analog Output Level Range

+ 12 dBu to + 28 dBu


DAC-6880 Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter

DAC-6880

Implementation ChartThe following table describes the functions of the DAC-6880:



YY

NN


YN

NN

2 - 4 (emph.) [000] Not indicated[100] No emphasis[110] 50/15 ms[111] CCITT J17

NNNN

NNNN


YY

NN

6 - 7 [00] Not indicated[01] 48 KHz[10] 44.1 KHz[11] 32 KHz

YYYY

NNNN

1 0 - 3 (Channel mode)

[0000] Not indicated[0001] Two channel[0010] Mono[0011] Primary/ Secondary [0100] Stereo[0101] to [1111]

YYYYYY

NNNNNN

4 - 7 (User bit mode)

[0000] Not indicated[0001] 192 bit[0010] AES 18[0011] User-defined[0100] to [1111]

YYYYY

NNNNN

2 0 - 2 (Aux. bit usage)


YYYY

NNNN


Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter DAC-6880



YYY

NNN

3 0 - 7 Multichannel modes N N

4 0 - 1 AES11 sync reference N N

5 0 - 7 Unused N N

6 - 9 ASCII source ID N N

10 - 13 ASCII destination ID N N

14 - 17 Local sample address N N

18 - 21 Time-of-day address N N

22 0 - 7 C data reliability N N

23 0 - 7 CRCC N N

Validity (V) bit Y N

User (U) bit N N

Audio Sampling Frequencies (KHz) 24-54 KHz (RX)

Audio Sample Word Length (bit) 16-20-bit (RX)



Chapter 6

DEC-6801/DES-6801Decoder with Frame Synchronizer

Module

OverviewThe DEC/DES-6801 Decoder with Frame Synchronizer is a compact and economical module which converts the composite NTSC, PAL-B, or PAL-M analog composite signals into component (4:2:2) serial video using a three-line adaptive comb filter. The unit provides analog video preprocessing and a wide range of digital adjustments.



Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module Specifications

Specifications

Analog Video Input

Analog Video Processing

Digital Video Processing

Item Specifications

Standards NTSC, PAL-B, PAL-M

Level 1 Vp-p ±3 dB

Impedance 75Ω

Return Loss > 40 dB to 5.75 MHz


> 60 dB at 50/60 Hz

Common Mode Range

± 5 Vp-p

Item Specifications

Gain Range ± 3 dB

Hue Range (NTSC only)

± 180°

Item Specifications

Input 10-bit quantized video

Decoding Algorithm 3-line adaptive comb

Frequency Response ± 0.1 dB to 5.75 MHz

Differential Gain 1%

Differential Phase 1°

Signal to Noise 59 dB

Delay 1 H +2 µs (DEC-6801)


Specifications Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module

Serial Video Outputs

Phasing

Storage

Reference Input

Item Specifications

Number 4

Standard 259M-C; 270 Mb/s


Impedance 75Ω

Return Loss > 18 dB

Signal Level 800 mV ± 0.5 V

Rise and Fall Times 400-700 ps (20 to 80% amplitude)

Overshoot < 10% of amplitude (all outputs terminated)

Jitter (DES-6801 Only)

< 500 ps

Item Specifications

Resolution < 0.25 ns

Range Infinite

Item Specifications

Number of Fields 2 (1 frame)

Data Path 10 bits

Item Specifications

Level Vp-p

Signal Type Analog composite NTSC/PAL-B/PAL-M

Connector BNC

Impedance 75 Ω


Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module Specifications

Power Dissipation

Item Specifications

DEC-6801 Positive rail: 4.9 WNegative rail: 0.4 WTotal: 5.3 W

DES-6801 Positive rail: 6.9 WNegative rail: 0.5 WTotal: 7.4 W


Installation Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module

InstallationTo ensure stable and trouble-free service the DEC/DES-6801 has been carefully inspected, tested, and calibrated before shipping. Check the equipment for any visible damage which might have occurred during transit and to ensure that the modules have remained properly seated in the mounting frame.

The DEC/DES-6801 module is designed to operate in an ambient temperature range of 0° to +40°C. No special provisions for cooling are necessary, but care should be taken to prevent excessive heat rise in closed, unventilated equipment racks.

The DEC-6801 module can be accommodated in either an FR-6801 or FR-7001 1RU mounting frame, or a FR-680x 2RU mounting frame. It can also be installed in an FR-7000MB MIX BOX standalone frame. The DES-6801 module can only be accommodated in FR-6804 or FR-6804-1 2RU mounting frames. A post attached to the module prevents insertion into a 1RU frame and prevents other modules from being placed too near it.

Figure 6-1. DEC/DES-6801 Module and Overlay

Before connecting the DEC/DES-6801 module to primary power, check (and, if necessary, set) the input voltage selector switch on the rear panel to match the local line voltage.

DEC-6801-M

SERIALOUTPUTS

625GENLOCK

525VIDEOINPUT

DEC-6801DES-6801

VIDEO INPUT

GENLOCK 525GENLOCK 625

SERIAL OUTPUTS

1 2

3 4This module is used when the DEC-6801 module is installed into either an FR-7001 series or FR-7000MB MIX BOX frame.

This overlay is used when the DEC/DES-6801 module is installed into an FR-680x frame.


Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module Operations

OperationsThe following sections describes the controls and indicators located at the front edge of the desirable module.

ControlsThe Selector 16-position rotary switch selects control parameters. See “Bank B2,” on page 78.

• The Adjuster two-position toggle switch adjusts parameter values.

• The Service Push button allows you to locate the position of the particular module in the network when one or multiple modules are linked together over a 75Ω network (DigiNet) and connected to the Central Controller (PC or Leitch DigiNet panel).

• The Frequency Adjust switch sets the free-running clock rate.

LED Indicators• The Bank A/B LED indicates the selected Bank: Bank A is selected if

the Bank A/B LED is Off (factory default), and Bank B is selected if the Bank A/B LED is On.

• The 625 Auto 525 LEDs indicate the standard: The 525/625 LEDs indicate a detected standard if the Auto LED is On, and a forced line standard if the Auto LED is Off.

• The Unlocked LED indicates (when lit) that the module cannot lock onto the incoming composite signal or that the Incoming signal is not present.

• The Service LED lights up for a short time at power up but remains Off during normal operation. If the Service LED is blinking or continuously On, a hardware failure has been detected.


Operations Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module

Jumpers• The Input Termination jumper is used to terminate the input video.

• The Fs Clk jumper is used to enable the frame synchronization clock. It must be used when the DEC- 6801 module is equipped with the 6801FS, 6801FS-1, 6801FS-2 or 6804FS sub-module.

• The Dec Clk jumper is used when the DEC-6801 module is used as a decoder only.

• Frame ID is made possible by reading the silicon serial number if it is installed in the RJ11 at the back of the frame. The two Off/On jumpers are shipped in the Off position from the factory and must both be On to enable frame ID.

SwitchesSW4 and SW5 can be used to identify the frame ID if the silicon serial number is not installed. There are 256 possible numeric combinations provided by these switches.

Frame IDFrame ID is read by the microcontroller on power up in the following sequence:

1. The microcontroller first tries to read the frame ID from the silicon serial number DS2401 placed in the RJ11 at the back of the frame.

2. If the silicon serial number is not installed, the frame ID is read from SW4 and SW5, which are placed on the DEC/DES-6801 module and set appropriately by the user.

The user must use either the FS CLK or the DEC CLK jumper.


Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module Bank A1

Bank A1Bank A1 is active in both DEC-6801 and DES-6801 modules. The following table describes this bank.

SW1 Position Function SW2 Down SW2 Up

0 Bank Select *3Bank A Bank B

1 Standard Force *3Auto

2 Force Standard 625 525

3 525 Standard Select NTSC PAL-M

4 Input Video Select (presence of setup dependent)

Input Video without Setup *3Input Video with Setup

5 Video Level Decrease Increase

6 *4Black Level Decrease Increase

7 Hue

8 VITS *3Pass mode Delete

9 VITS Pass mode VITS are passed unprocessed on the Luma channel

*5VITS are passed through a simple decoder

A

B Black Level mode Auto *6Manual

C

D

E

F Factory Recall

Description*1 The Bank A/B LED is Off.

*2 The Bank A/B LED is On.

*3 Factory default setting.


Bank A1 Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module

*4 Black level adjustment is possible when “Black Level Mode” is set to the manual mode.

*5 This function is disabled when “Black Level Mode” is set to the manual mode.

*6 Controls are disabled for PAL-M standard.

Description


Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module Bank B2

Bank B2Bank B2 is active only with the DES-6801 Module. The following table describes this bank.

SW1 Position Function SW2 Down SW2 Up

0 Bank Select *3Bank A *3Bank B

1 H Phase

2 V Phase

3 Freeze *3Off On

4 Freeze mode *3Field Frame

5 Field Freeze mode *3Field 1 Field 2

6 Hot Switch Disable *3Enable

7 Hot Switch mode Black *3Last Field

8 Forced Black *3Off On

A FS mode Delay *3Frame Sync

Description*1 The Bank A/B LED is Off.

*2 The Bank A/B LED is On.

*3 Factory Default Setting.

*4 Black level adjustment is possible when “Black Level Mode” is set to the manual mode.

*5 This function is disabled when “Black Level Mode” is set to the manual mode.



Chapter 7

DEC-6804 Decoder andDES-6804 Decoder with Frame

Synchronizer

OverviewThe DEC-6804 and DES-6804 decoders are compact, high precision12-bit decoders that convert NTSC or PAL analog composite signals into superior quality component (4:2:2) digital video. These decoders use advanced Leitch Phase Quadrature Mixing (PQM™) technology for 2-D adaptive comb filtering, and are designed for high performance and optimal value. They are both able to process vertical blanking intervals (VBIs) and handle super-black levels.

The DES-6804 also adds frame synchronization features and TBC capabilities. It provides an audio sync lock with video delay and hot-switch outputs for an audio sync interface to accommodate future digital audio modules.

This document includes the following topics:

• Main features

• Signal flow

• Front and back modules

• Installation

• Operation

• Parameter groups

• Specifications

Specifications and designs may change without notice.


Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer Features

FeaturesThe following list highlights the features of the DEC-6804 and the DRS-6804:

• Analog video processing at ±6 dB gain range

• ±7.5 IRE black level

• 360° hue adjustment allowing full-range user control

• Over-sampling analog-to-digital conversion with 12-bit resolution

• TBC capabilities, locking to VHS or bad microwave feeds (DES-6804 only)

• 2-D adaptive comb filtering utilizing the new Leitch PQM™ technology

• Automatic PAL/NTSC switching (based on input signal)

• Full VBI handling and processing (line by line)

• Test signal generation (75% color bar, FCC composite, black)

• Full compatibility with existing frames

The new Phase Quadrature Mixing (PQM™) technology provides the highest degree of video decoding quality while minimizing the level of residual subcarrier artifacts associated with previous comb filter designs.

The PQM™ decoding technology is based on a set of dynamic control signals that are derived from specific quadrature characteristics of the source video signal. These signals are filtered and subsequently used to modulate the summation of the original source video components, in a balanced mixer hierarchy that mirrors the control signal quadrature relationship.


Signal Flow Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

Signal FlowFigure 7-1 is a functional block diagram that describes the signal flow of the DEC-6804 and DES-6804 modules.

Figure 7-1. Functional Block Diagram of the DEC/DES-6804 Modules

FPGA Video Processing Unit

12-Bit A/DConverter

VideoPreprocessing

SyncSeparator

LineMemory

ClockGeneratorand PLL

CPUControl

UnitUser

Interface

Clockand PLLControl

SDIOutput

Clamp Control

Serializer

2-D CombFilter

ColorDemodulator

DataFormatter

ReferenceComposite

Video

I/ODelay

SDIOutput

Serializer

PrimaryComposite

Video

2I C BusGenlock

(DES-6804 Only)

Audio SyncInterface

(DES-6804 Only)

FrameSynchronizer

(DES-6804 Only)

FrameMemory

(DES-6804 Only)


Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer Front and Back Modules

Front and Back Modules

Front ModuleFigure 7-2 illustrates the LEDs and controls on the DEC-6804 and DES-6804 front modules.

Figure 7-2. LEDs and Controls on the DEC/DES-6804 Front Module

SW1 MODE SELECT Rotary Switch

SW3 DOWN/UPToggle Switch

Extractor Handle Open

LED Indicators

In compatible 6800/7000 series 1RU frames, the front module is installed horizontally. The 2RU 6800 series frames (FR-6804 and FR-6804-1) require a vertical installation.


Front and Back Modules Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

Back Module and Adhesive Overlay

Back Module

If you install a DEC-6804 or DES-6804 decoder module in an FR-7001 frame, a back module is required (see Figure 7-3.) The I/O DELAY connector only functions on the DES-6804 module.

Figure 7-3. Back Module for DEC/DES-6804 Modules Installed in an FR-7001 Frame

Adhesive Overlay

The following frames do not require a back module:

• FR-6800 (1RU)

• FR-6801 (1RU)

• FR-6801-1 (1RU)

• FR-6802 (1RU)

• FR-6804 (2RU)

• FR-6804-1 (2RU)

To properly identify the integral connectors on the frame, attach the DEC/DES-6804 adhesive overlay to the back of the frame (see Figure 7-4 on page 84.) The I/O DELAY connector only functions on the DES-6804 module.

DES-6804

I/ODELAY VIDEO

INPUT

SERIALOUTPUTS

1

24

3G/L 625G/L 525


Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer Front and Back Modules

Figure 7-4. Overlay of the DEC-6804 Decoder and the DES-6804 Decoder with Frame Synchronizer

Overlay for the FR-6800 series of frames.

DEC/DES-6804

GENLOCK 625

1 2

3 4

SERIAL OUTPUTS

GENLOCK 525

I/O DELAY

VIDEO INPUT


Installation Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

InstallationTo ensure stable and trouble-free service, the DEC-6804 and DES-6804 modules have been carefully inspected, tested, and calibrated before shipping. Check the equipment for any visible damage that may have occurred during transit.

The DEC-6804 and DES-6804 modules are designed to operate in an ambient temperature range of 0° to +40°C. No special provisions for cooling are necessary, but take care to prevent excessive heat in closed, unventilated equipment racks.

Jumper SettingsThe DES-6804 module includes two jumpers: J4 and P5. The DEC-6804 module includes only the J4 jumper.

Jumper J4 allows you to select either Termination On or Termination Off for video input.

Jumper P5 allows you to select either NTSC/PAL input Loop-Through or 75Ω Internal Termination as genlock input options. When you select Internal Termination, NTSC and PAL-B can be connected simultaneously.

Figure 7-5 illustrates the location of the J4 and P5 jumpers. The J4 jumper is shown in the Termination On position; the P5 jumper is shown in the Internal Termination position.

See the table on “Jumper Configurations” on page 87 for more information.

If the NTSC/PAL Loop-Through is not connected on the DES-6804 module you must provide a 75Ω termination either externally, or by setting the P5 jumper to the Internal Termination position.


Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer Installation

Figure 7-5. Location of the J4 and the P5 Jumpers on the DES-6804

J4 Jumper

P5 Jumper


Installation Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

Jumper Configurations

Jumper Setting Visual Configuration

J4 (Video Input Option)

Termination On(Default)

Termination Off

P5 (Genlock Input Option)

Loop-Through(Default)

Internal Termination


Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer Operation

Operation

OverviewYou can operate and confirm settings for the DEC/DES-6804 decoders using the two control switches and the LED indicators on the card-edge of the module. As with all 6800/7000 products, external monitoring equipment is also required.

Figure 7-6. Card-Edge Controls and Indicators on the DEC/DES-6804

ControlsTwo controls provide access to all of the parameter settings on the decoders.

• The SW1 mode Select rotary switch selects all of the control parameters.

• The SW3 Down/Up toggle switch adjusts parameter values. When you press the switch Up, parameter values increase. When you push it Down, parameter values decrease.

The DEC-6804 and DES-6804 decoders require 10 seconds to stabilize after they are turned on.

SW1 MODE SELECTRotary Switch

SW3 DOWN/UPToggle Switch

LED Indicators


Operation Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

LED IndicatorsMost of the LED indicators operate in a straightforward manner. However, when you make changes to your decoder settings, you must watch the D1 and D2 LEDs together to choose the correct parameter groups.

Because there are a large number of parameters on the DEC-6804 and DES-6804 decoders, you need four different parameter groups for each application. Two parameter groups are common to NTSC and PAL-B applications, and two additional parameter groups separately apply only to NTSC or PAL-B. See “Parameter Groups” on page 92 for more information.

D1 and D2 LEDs

To make changes in the correct parameter groups, first watch the D1 (Bank Mark 0) and D2 (Bank Mark 1) LEDs together. The on/off combination of these two LEDs shows which parameter group you have selected.

For example, if the D1 LED is Off, and the D2 LED is On, you have selected parameter group C. If the D1 LED is On, and the D2 LED is Off, you have selected parameter group B.

The table below shows the four D1 and D2 LED combinations that indicate which parameter group is active.

D3 to D8, and D16 LEDs

The remaining LEDs on the DEC-6804 and DES-6804 decoders provide status information using signals that are on, off, or blinking. See the table “LED Indicator Descriptions” on page 90 for a complete list of all LED indicators and their meanings.

LED Indicators for Parameter Groups

D1 LED(Bank Mark 0)

D2 LED(Bank Mark 1)

Parameter Group Selected

Off Off A

On Off B

Off On C

On On D


Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer Operation

LED Indicator Descriptions

LED LED Color Name Status Description

D1 and D2

Green(D1 and D2 LEDs flicker briefly when toggle switch SW3 is first moved to either the Up or Down position)

BANK MARK 0 and BANK MARK 1

D1: OffD2: Off

Parameter group A is selected.

D1: OnD2: Off

Parameter group B is selected.

D1: OffD2: On

Parameter group C is selected.

D1: OnD2: On

Parameter group D is selected.

D3 Green 525

On The 525 standard is detected or forced.

Off The 525 standard is not detected or forced.

Blinking The module detects a 525 standard error.

D4 Green AUTOOn The module is in detect standard mode.

Off The module is in force standard mode.

D5 Green 625

On The 625 standard is detected or forced.

Off The 625 standard is not detected or forced.

Blinking The module detects a 625 standard error.

D6 YellowGENLOCK(DES-6804 only)

On The signal is locked to genlock.

Off The module is in free-run mode.

Blinking The module is set to genlock, but is not locked.

D7 GreenFREEZE(DES-6804 only)

On The module’s input video is frozen.

Off The module’s input video is not frozen.

D8 Yellow TSGOn The test signal generator is operating.

Off The test signal generator is not operating.

D16Yellow

TBC (DES-6804 only)

On The time base corrector is operating.

Off The time base corrector is not operating.


Operation Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

Changing Parameter SettingsFollow these steps to change the parameter settings on the DEC-6804 and DES-6804 decoders:

1. Set the SW1 rotary switch to 0.

2. Push the SW3 toggle switch UP or DOWN to select the parameter group that you need.

3. Observe the D1 and D2 LED combination to ensure that you have selected the correct parameter group.

4. Rotate the SW1 switch to the number or letter that corresponds with the parameter you are selecting.

5. Push the SW3 switch UP or DOWN to change the parameter value while observing the results on a waveform monitor or vectorscope.


Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer Parameter Groups

Parameter GroupsWhen you change parameter options on the DEC-6804 and the DES-6804 modules, you need to access different parameter groups. The first two groups of parameters (A and B) are common to both NTSC and PAL-B. In addition, there are two separate parameter groups (C and D) for both NTSC and PAL-B.

Synchronization and genlock parameters shown in the parameter groups apply only to the DES-6804 module.


Parameter Groups Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

Common Parameter Groups A and B (NTSC and PAL-B)Parameter groups A and B are common to both NTSC and PAL-B decoders.

Common Parameter Group A

SW1 Position Function SW3 Down SW3 Up Default Value

0 Group Select Group Decrease Group Increase Group A

1 Standard Force Auto Auto

2 Force Standard 625 525 525

3 Decode mode Force Auto Auto

4 Force mode Notch Filter 2-D Adaptive Filter 2-D

5 Genlock (DES-6804 only)

Free Run Sync mode Sync mode

6 Sync mode(DES-6804 only; activated by Sync mode option in Genlock)

Delay mode Synchronizing mode

Synchronizing mode

7 Analog Video Level Decrease Increase

Factory Settings

8 Analog Black Level Decrease Increase

9 Proc Luma Level Decrease Increase

A Proc Chroma Level Decrease Increase

B Proc Hue Phase [wraps] (NTSC only)

Decrease Increase

C Proc Cb Offset Decrease Increase

D Proc Cr Offset Decrease Increase

E (Not functional)

F Factory Recall Recall Recall All default values in parameter groups A, B, C, and D.



Common Parameter Group B



1 Freeze (DES-6804 only) Off On Off

2 Freeze mode (DES-6804 only)

Field Frame Field

3 Field Freeze mode(DES-6804 only)

Field 1 Field 2 Field 1

4 H Phase (DES-6804 only; this function is available in both Delay mode and Synchronizing mode) [wraps]

Decrease Increase Factory Settings

5 V Phase(DES-6804 only; this function is available in both Delay mode and Synchronizing mode) [wraps]

Decrease Increase

6 Input Video Active Lines With/Without Setup(Disabled in PAL-B)

With Without With

7 Black Clip Disable Enable Disable

8 Hot Switch(DES-6804 only; Group A Genlock parameter must be set to Free-Run, or Sync mode parameter must be set to Synchronizing mode)

Three options are available in a clipped list: Disable, Enable, and Auto

• Disable: Passes video including any input disturbances

• Enable: Freezes or selects test signal

• Auto: TBC activation will disable the hot switch

Auto



9 Loss of Video mode

Displays Selected Test Pattern

Freezes when hot switch is enabled (DES-6804)Pass (DEC-6804)

Freeze (DES-6804) Pass (DEC-6804)




Common Parameter Group B (Continued)


A Edge Enhancement (NTSC only)

Off On Off

B TBC Switch Delay(DES-6804 only)

Decrease 50 ms(min 100 ms)

Increase 50 ms(max 2 sec)

500 ms

C TBC mode (DES-6804 only; Group A Genlock parameter must be set to Free-Run, or Sync mode parameter must be set to Synchronizing mode)

Three options are available in a clipped list: Disable, Enable, and Auto

Auto

D TSG Disable Enable Disable

E TSG Pattern Decrease Increase Pattern 1

F Factory Recall Recall All default values in parameter groups A, B, C, and D.




Parameter Groups C and D (NTSC)In NTSC, parameter group C includes VBI line-by-line process and bypass control parameters. Parameter group D includes VBI line-by-line setup remove control, and input video VBI lines with or without setup.

Parameter Group C (NTSC)



1 VBI Line-by-Line Process Control Disable Enable Disable

2 Field Field 1 Field 2 Field 1

3 Line 10 Notch Bypass Notch







A Line 17 Notch Bypass Notch

B Line 18 Notch Bypass Notch

C Line 19 Notch Bypass Notch

D Line 20 Notch Bypass Notch

E Line 21 Notch Bypass Notch

F Line 22 (both fields) Three options are available in a wrapping list: Notch, Comb and Bypass.

Comb



Parameter Group D (NTSC)



1 VBI Setup Remove Line-by-Line Control

Disable Enable Disable


Input Video VBI Lines With/Without Setup

SW1 Position Function SW3 Down SW3 Up Default

3 Line 10 Without With Without







A Line 17 Without With Without

B Line 18 Without With Without

C Line 19 Without With Without

D Line 20 Without With Without

E Line 21 Without With With

F Line 22 Without With With



Parameter Groups C and D (PAL-B)In PAL-B, parameter groups C and D both include VBI line-by-line process and bypass control parameters.

Parameter Group C (PAL-B)


Value



2 Field Select Field 1 Field 2 Field 1

3 Field 1: Line 6Field 2: Line 319

Notch Bypass Notch

4 Field 1: Line7Field 2: Line 320

Notch Bypass Notch


Notch Bypass Notch


Notch Bypass Notch


Notch Bypass Notch


Notch Bypass Notch


Notch Bypass Notch

A Field 1: Line 13Field 2: Line 326

Notch Bypass Notch

B Field 1: Line 14Field 2: Line 327

Notch Bypass Notch

C Field 1: Line 15Field 2: Line 328

Notch Bypass Notch

D Field 1: Line 16Field 2: Line 329

Notch Bypass Notch



E Field 1: Line 17Field 2: Line 330

Notch Bypass Notch

F Field 1: Line 18Field 2: Line 331

Notch Bypass Notch

Parameter Group C (PAL-B)


Value

Parameter Group D (PAL-B)


Value




3 Field 1:Line 19Field 2: Line 332

Notch Bypass Notch4 Field 1:Line 20

Field 2: Line 333

5 Field 1:Line 21Field 2: Line 334

6 Field 1: Line 22Field 2: Line 335 Three options are available in a

wrapping list: Notch, Comb and Bypass.

Comb7 Field 1:Line 23

Field 2: Line 336

8 to F (Not functional)


Audio Sync Interface (DES-6804 Only) Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

Audio Sync Interface (DES-6804 Only)The DES-6804 is designed to provide synchronization with 6800/7000 series audio modules using the external I/O DELAY connector. More information on this future-use feature will be released as modules become available.


Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer Specifications

Specifications

Analog Video Input

Analog Video Processing

Digital Video Processing

Item Specification

Standards NTSC, PAL-B

Level 1 V p-p ±2.5 dB

Impedance 75Ω

Return Loss >40 dB to 5.75 MHz


>60 dB at 50/60 Hz

Common Mode Range

5 V p-p

Video Level Adjust Range

±6 dB

Item Specification

Gain Range ±6 dB

Hue Range ±180°

Item Specification

Input 12-bit quantized video

Decoding Algorithm 3-line adaptive comb

Frequency Response ±0.1 dB to 5.75 MHz

Luma Signal to Noise Ratio

>60 dB 10 kHz to 6 MHz

Minimum Delay NTSC mode: 134 µsPAL mode: 200 µs


Specifications Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

Video Outputs

Item Specification

Quantity 4

Standard 259M-C; 270 Mb/s


Impedance 75Ω

Return Loss >18 dB to 270 MHz


DC Level 0.0 V ±0.5 V

Rise and Fall Times 400-700 ps (20% to 80% amplitude)

Overshoot <10% of amplitude (all outputs terminated)

Jitter <500 ps



Phasing (DES-6804)

Storage (DES-6804)

Audio Synchronization Interface Output (DES-6804)

Reference Input (DES-6804)

Item Specification

Horizontal Phase Adjustment Range

1 line, with resolution of 37 ns

Vertical Phase Adjustment Range

1 frame, with resolution of 1 line

Item Specification


Data Path 10 bits

Item Specification

Output Ports 1


Impedance 75Ω

Item Specification

Level 1 V p-p

Signal Type Analog composite NTSC/PAL-B

Connector BNC

Impedance 75Ω


Specifications Chapter 7: DEC-6804 Decoder and DES-6804 Decoder with Frame Synchronizer

Module Start-Up

Typical Power Dissipation

Module Duration

DEC-6804 8 sec (approximately)

DES-6804 10 sec (approximately)

Item Specification

DEC-6804 Positive rail: 5.2 WNegative rail: 0.28 WTotal: <6 W

DES-6804 Positive rail: 5.46 WNegative rail: 0.30 WTotal: <6.2 W


Chapter 8

ENC/ENS/ENX-6801/MEncoder Modules and Accessories

OverviewThe ENC-6801 SDI to NTSC/PAL-B Encoder is a compact and economical module for NTSC, PAL-B, and PAL-M encoding. Supporting 4:2:2 serial digital inputs, the unit may be used as either a broadcast quality encoder or as a monitoring encoder. The ENS-6801 module is the same as the ENC but comes equipped with a Frame Synchronizer sub-module. The ENX-6801 module is the same as the ENC but comes equipped with a Cross Color Reducer submodule.



Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories Features

FeaturesThe ENC/ENS/ENX-6801/M has the following features:

• 10-bit broadcast quality encoding

• Color-frame locking to composite reference

• Built-in line delay and synchronizer

• Optional infinite phasing with frame synchronizer module

• User-adjustable luminance/chroma gain

• Built-in test signals

The terms “line synchronizer” and “Line Store”are used interchangeably to describe the buffer memory capability of the ENC-6801 and ENX-6801.


Specifications Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories

Specifications

Serial Video Inputs

Video Outputs

Item Specifications

Standard SMPTE 259M-C 270 Mb/s 525/625 component


Impedance 75Ω terminating


CMRR 30 Vp-p at 60 Hz

Equalization > 30 dB, 259M-C

Item Specifications

Serial Video Outputs 2

Standard SMPTE 259M-C



Impedance 75Ω


Overshoot < 10%

Rise and Fall 400-700 ps (20 to 80% amplitude)

Jitter < 300 ps

Analog Composite Outputs

4

Standard NTSC/PAL-B or NTSC/PAL-M

Signal Level 1 Vp-p nominal ± 10%

Impedance 75Ω

Return Loss > 40 dB to 5 MHz

Isolation > 46 dB to 5 MHz


Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories Specifications

Filtering per CCIR601 specification

Response NTSC/PAL-M: ± 0.2 dB to 4.6 MHz PAL-B: - 0.4 dB to 5.2 MHz

Differential Gain < 0.6 degrees

Differential Phase < 0.8%

Group Delay < 8 ns to 5 MHz

RMS Signal to Noise > 59 dB to 5 MHz

Item Specifications


Specifications Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories

Phasing Range

Power Consumption

Reference Inputs

Item Specifications

ENC Delay 5 µs - 2.9 lines

Line Synchronizer Mode

5 µs - 1 line (relative to serial input)

ENX Delay Mode 1.1 lines - 3.9 lines

Line Synchronizer Mode

1.1 lines - 2 lines (relative to serial input)

ENS Frame Sync Mode

Infinite

Cable Pre-EQ Up to 50 m of Belden 8281 equivalent

Resolution 10 bits

ENC-6801 ENS-6801 ENX-6801

+ve 4.3 W 6.3 W 5.2 W

-ve 1.5 W 1.6 W 1.4 W

Total 5.8 W 7.9 W 6.6 W

Item Specifications

Reference Inputs 2 (separate for NTSC and PAL-B or NTSC and PAL-M)

Signal Level 1 Vp-p

Impedance High impedance

Required Signal Black burst SMPTE 170M complying in case of NTSC CCIR Rep 624-3 complying for PAL-B


Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories Specifications

Signal Level 1 Vp-p CCIR Rep 624-3 complying for PAL-B

RMS S/N > 40 dB to 5 MHz

SCH Error < ± 60 degrees

Item Specifications

Reference Inputs 2 (separate for NTSC and PAL-B or NTSC and PAL-M)


Installation Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories

InstallationThe ENC/ENS/ENX-6801 modules are designed to operate in an ambient temperature range of 0° to 40° C. No special provisions for cooling are necessary, but care should be taken to prevent excessive heat rise in closed, unventilated equipment racks.

The ENC/ENX-6801 modules can be installed in either a 1RU FR-6801, an FR-7001 frame, or a 2RU FR-6804(-1) frame. The ENS-6801 module can only be installed in an FR-6804(-1) frame. When installed in the FR-7001 frame, an ENC/S/X-6801-M back module is required. When installed in the FR-680X frame, a back panel overlay is required. For loop-through genlock input, a T-adaptor can be used because the reference inputs are high impedance. (A T-adaptor with 75 Ω termination is required for terminating inputs.)

Figure 8-1. Back Module and Overlay

For PAL-M reference input, use 625 genlock input connection.

Before connecting the ENC-6801 module to primary power, check (and if necessary, set) the input voltage selector switch on the rear panel to match the local line voltage.

ENC-6801ENS-6801ENX-6801

SERIAL INPUT

GENLOCK 625GENLOCK 525

PAL/NTSC OUTPUT1 2

3 4

SERIAL OUTPUT

1 2

ENC/S/X-6801-M

SERIALOUTPUT

G/L 525SERIALINPUT

1

2

PAL/NTSCOUTPUT

1

24

3

G/L 625

The back box is used when the ENC/ENX-6801 module is installed into either an FR-7001 series or FR-7000MB MIX BOX frame.

This overlay is used when the ENC/ENS/ENX-6801 module is installed into a 6800 series frame.


Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories Block Diagram

Block Diagram

Figure 8-2. ENC/ENS/ENX-6801 Block Diagram

Deserializer and FIFO DelayThe serial digital video enters the module through a 75 W terminating BNC connector. The serial reclocking input stage removes high frequency jitter and also auto-equalizes cable losses (up to 300 m of cable) in case of a 270MHz 4:2:2 serial signal. The remaining low- frequency portion of the jitter is removed by the 27 MHz parallel clock PLL loop that supplies the read clock for the U20 FIFO chip. The function of the 5K word length FIFO is to adjust the module's delay between the minimum latency and a maximum 2.9 horizontal line delay. The on-board FIFO can be switched to Line-store mode up to one full line, and in this case, the reference has to be within one line range. The module's functionality can be expanded by adding the 6801FS-IO frame synchronizer sub-board to the A1 connector.


Block Diagram Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories

Multi-Standard Encoder and Output Buffer The multi-standard digital video signal encoding is done in U17 TDS6294 encoder chip. The encoder is capable of encoding all legal colors which fulfill the diamond display with adequate headroom. The adjustable parameters are listed. See “User-Controlled Parameters” on page 116 for more information. There is a user adjustment group that allows the user to correct luminance chrominance balance and hue if the input signal requires correction. However, by a disable function, the encoder can be easily switched to the Calibrated mode. The output of the 12-bit resolution D/A has a ±10% adjustment range. The U39 output buffer can drive four double-terminated cable and has a cable pre-equalization range of up to 50 m cable length.

GenlockThe composite output video is automatically color-frame locking. If a blackburst reference signal is present, no selection is necessary. The serial digital signal and the reference have to be frequency-locked and the phase difference has to be within ±5 video lines for stable color-frame locking. When color-frame locking is established, the phasing adjustment range is according to specifications and referenced to the serial digital input source.


Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories User-Controlled Parameters

User-Controlled Parameters

ENC/ENS-6801 Bank ATo make adjustments see the additional tables on the following pages.

To choose PAL-M standard: in Bank A, position 3, select PAL-M mode.

HexSwitch Function Toggle

DownToggle Up

Default Value

BANK A

0 *6Bank Select A B A

1 *6Auto Select Forced Auto Auto

2 Mode Select 525 625 525

3 PAL-M NTSC PAL-M NTSC

4 Reserved

5 Video Level - + 0x200

6 *1Setup Off On On

7 Vertical Blanking Pass Delete Pass

8 Chroma Disable Enable Enable

9 Burst Disable Enable Enable

A *2User Corrections Disable Enable Disable

B Hue - + 0x00

C Chroma Level - + 0x80

D Luma Level - + 0x80

E Color Frame Offset Decrease *Refer to Notes

Increase

F

The 625 LED is disabled in ENC/ENS/ENX-6801M; the 525 LED should be lit steadily in NTSC mode and flashing continuously in PAL-M mode; and the Auto LED and 525 LED will flash alternately if the timing is invalid in line sync mode.


User-Controlled Parameters Chapter 8: ENC/ENS/ENX-6801/M Encoder Modules and Accessories

ENC/ENS-6801 Bank B


DownToggle Up

Default Value

BANK B

0 Bank Select A B A

1 *5Fine Phase - + 0x00

2 Horizontal Phase - + 0x00

3 *3 Vertical Phase - + 0x00

4 *3 Video Freeze Disable Enable Disable

5 *3 Freeze mode Field Frame Field

6 *3 Freeze Field Sel Field 1 Field 2 Field 1

7 Hotswitch Disable Enable Enable

8 *3 Hotswitch Freeze Black Field Field

9 *3 Goto Black Disable Enable Disable

A *4 Timing mode Line Delay Line Store Line Delay

B

C

D Test Waveform Disable Enable Disable

E Waveform 75% Color Bars

Ramp 75% Color Bars

F Factory Values Reset Set (LED FLASH)



ENX-6801 Bank A


DownToggle Up

Default Value

BANK A

0 Bank Select A B A

1 Auto Select Forced Auto Auto

2 Mode Select 625 525 525

3 PAL-M NTSC PALM NTSC

4 Rate Select 270 360 270

5 Video Level - + 0x80

6 *1Setup Off On On

7 Vertical Blanking Enable Disable Disable

8 Chroma Disable Enable Enable

9 Burst Disable Enable Enable

A *2User Corrections Disable Enable Disable

B Hue - + 0x00

C Chroma Level - + 0x80

D Luma Level - + 0x80

E

F



ENX-6801 Bank B


DownToggle Up

Default Value

BANK B

0 Bank Select A B A

1 Fine Phase - + 0x00

2 Horizontal Phase - + 0x00

3 Cross Color Reduction

Disabled Enabled Disabled

4

5

6

7

8

9

A Timing mode Delayed Sync Delayed

B

C

D Test Waveform Disable Enable Disable

E Waveform 75% Color Bars

Ramp 75% Color Bars

F Factory Values Reset Set (LED FLASH)

Function Description

*1 Valid only in NTSC mode.

*2 Overwrites values to nominal of parameters A, B and C if Disabled is selected.

*3 These parameters are controlled only if frame synchronizer sub-board is present.

*4 Controls mode of line FIFO and must be set to Line Store if sub-board is present.

The terms “Line Synchronizer and Line Store” are used interchangeably.



Delay ModeIn Line Delay mode, the clock used to input to the memory buffer is derived from the input signal. The clock used to output from the memory buffer is also derived from the input signal. In this mode, high-frequency jitter is removed at the input reclocking circuit, but low-frequency jitter will pass right through the entire unit.

Line StoreIn Line Store (i.e. line synchronizer) mode, the clock used to input to the memory buffer is derived from the input signal. The clock used to output from the memory buffer is derived from the input genlock signal. In this mode, high-frequency jitter is removed at the input reclocking circuit, and the low-frequency jitter is removed through the frame buffer.

Input SignalThe modules are shipped in line Delay mode because the timing relationships within the system are not known. If the input signal is not advanced less than one line in time from the destination, the line synchronizer in the encoder cannot provide the correct picture position.

Output SignalThe output signal will either “slip” a line up or down depending on whether the signal is arriving at the destination early or late.

*5 Controls fine phase for ENC/ENX-6801. For fine phase control of ENS-6801, use potentiometer on front of plug-in submodule.


*7 • Increase refers to the SCH phase adjustment by 90° increments from 0° to 270°.

• Decrease adjust the SCH phase in the opposite direction: both of these adjustments are for PAL signals.

• NTSC signals will change to 0° or 180° phasing when selecting either increase or decrease.

Function Description



Frame BufferThe frame buffer is analogous to a bit bucket with the input signal never overfilling or running slow enough to allow the bit bucket to empty and having a steady output at all times. The delay through the frame buffer will always be somewhere around a frame. If the bit bucket (i.e. frame buffer) overfills or empties, there will be a frame “slip”.

Line BufferThe line buffer is analogous to a tiny bit bucket with the input signal possibly overfilling or not being able to fill up this tiny bit bucket. The delay will always be around a line. If the line buffer overfills or empties, there will be a line “slip”.


Chapter 9

MXA-6800-AES andMXA-6801-A2/A4

Video/Audio Multiplexer Module

OverviewThe MXA-6800 module is an Audio/Video Multiplexer (Mux). Two 20-bit digital audio channels (AES/EBU) are embedded into the Horizontal Ancillary Space (HANC) of a SMPTE 259M serial digital video signal. One MXA-6800 can be used to embed one group of audio into the HANC. One group is composed of four mono audio channels or two stereo audio channels.

The MXA-6800 always refers to both the analog and digital products.The MXA-6800-AES refers to the digital audio input version.The MXA-6801-A2/A4 refers to the analog audio input version.


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module Features

FeaturesThe MXA-6800-AES and the MXA-6801-A2/A4 Video/Audio Multiplexer modules have the following features:

• Four serial outputs

• Accepts balanced 110Ω or unbalanced 75W AES (MXA-6800-AES)

• Accepts two balanced or four balanced analog audio inputs (MXA-6801-A2/A4)

• EDH on output

• Remote or local channel swap capability

• Independent audio delay on each left/right channel

• Independent audio gain on each left/right channel

• Mute on audio error control

• Adjustable mute duration

• Reports various audio errors for debugging system

• Choice of embedding (pass through, follow)

• Cascade capability for multiple group embedding

• Passes channel and user status bits

• 20-bit resolution (24-bit during audio processing)

• Interpolates/sample rate converts 10 KHz- 50 KHz audio data to 48 KHz


Features Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

Figure 9-1. MXA-6800-AES Block Diagram

SerialVideoInput

Interface

DSP, Gain, Delay,Invert, SwapProcessing

Audio

Processor

EDHProcessor

SerialVideoOutput

Interface

CPU

+

+ AESInput

Interface

AESInput

Interface

SampleRate

Converter

SampleRate

Converter

DSP, Gain, Delay,Invert, SwapProcessing

I AudioProcessor

2

I AudioProcessor

2

GPI 1GPI 2


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module Features

Figure 9-2. MXA-6801-Ax Block Diagram

SerialVideoInput

Interface

DSP, Delay,Invert, SwapProcessing

Audio

Processor

CPU

LevelControl

DSP, Delay,Invert, SwapProcessing

GPI 1GPI 2

+ AudioTermination

> 20k or 600Ω Ω

+ AudioTermination

> 20k or 600Ω Ω

LevelControl ADC

ADC

EDHProcessor

SerialVideoOutput

Interface


Specifications Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

Specifications

Serial Video Inputs


Item Specifications

Number 1

Standard SMPTE 259M-C; 270 Mb/s, 525/625 component


Impedance 75Ω

Return Loss >18 dB to clock frequency

Signal Level 800 mV ± 10%

Equalization Up to 265 m of Belden 8281 @ 270 Mb/s

Video Processing Delay ~1 ms

Quantization 10-bit video/20-bit audio (24 bits during audio processing)

Embedding Standard SMPTE 272M

Compliance Level ACDG

Frames FR-6801, FR-6802, FR-6804, FR-7001

Item Specifications

Number 4



DC Offset 0 V ± 0.5 V

Rise and Fall Time 400- 700 ps (20- 80% amplitude)


MXA-6800 applies to both MXA-6800-AES and MXA-6801-A2/A4.


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module Specifications

Audio

MXA-6800-AES

MXA-6801-A2/A4

Item Specifications

Audio Processing Delay ~1.28 ms

Delay Adjustment Range 1.4 ms to 1.2 sec in steps of 0.28 ms

Item Specifications

Standard AES3-1992, AES2-id-1996

Number of Inputs 2 AES channels (1 group, 4 channels)

Impedance Termination 75Ω unbalanced or 110 Ω balanced

Input Audio Rate 32 kHz- 48 kHz synchronous or asynchronous

Gain Adjustment Range -121 dB to +6 dB in steps of 0.25 dB

Input Connector Types BNC or Weidmuller SL Series

Power Consumption 6.95 W (+6.5 V), 0.082 W (-6.5 V), 7.04 W (total)

Item Specifications

Number of Inputs 4 balanced analog audio cosampled at 48 kHz

Input Impedance >20 kΩ or 600Ω, jumper-selectable

ADC Type 24-bit, 128x oversampling

Maximum Input Level 0 dBFS = 24 dBu nominal when 20kΩ0 dBFS = 30 dBu nominal when 600Ωterminated, ± 10 dB gain adjustable in step of 0.5 dB

THD + N • <-98 dB THD+N w/in 20 Hz to 20 kHz @ 23.3 dBu in and -0.8 dBFS out (use 6801PS)

• <-101 dB THD+N w/in 30 Hz to 20 k Hz @ 23.3 dBu in and -0.8 dBFS out (use 6804PS)


Specifications Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

Terminology

Frequency Response ± 0.05 dB within 20 Hz to 20 kHz

CMRR -90 dB @ 60 Hz, -60 dB @ 20 kHz

SNR < -100 dB relative to full-scale 24 dBu

Linearity ± 0.2 dB within -100 dBFS to 0 dBFS

IMD (CCIF two-tone test) < 0.01 %

Intra Channel Crosstalk <-100 dB

Stereo Crosstalk <-100 dB

Dynamic Range > 100 dB

Input Connector Type Weidmuller SL Series

Channel Status and User Bit Professional Mode and 48 kHz frequency bits are inserted.

Power Consumption 1.8 A (+6.5 V), 120 mA (-6.5 V), 8.5 W (total)

Item Terminology

ADC Analog to Digital Converter

CMRR Common Mode Rejection Ratio

SNR Signal to Noise Ratio

THD + N Total Harmonic Distortion plus Noise

IMD Intermodulation Distortion

Item Specifications


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module Installation

InstallationThe MXA-6800 module can be installed in a Leitch FR-680x series, FR-7001 series, or FR-7000MB MIX BOX frame.

Figure 9-3. Back Modules: MXA-6800-M1, MXA-6800-M2 (Digital MXA)

Figure 9-4. Back Module: MXA-6800-M3 (Analog MXA)

See Figures 9-3 to 9-6.

1 2

4 2

3 1

SERIALINPUT

SERIAL OUTPUTSAES

MXA6800-M1

REMOTE

CH L/R

4 2

3 1

SERIALINPUT

SERIAL OUTPUTS

AUDIO

MXA6800-M2

REMOTE

+ -

CH1 CH2

CH L/R

+ -

Used with the Used with the MXA-6800-AESx

4 2

3 1SERIALINPUT

SERIALOUTPUTS

REMOTECHL/R

MXA-6800-M3LEFT

CH

LEFT RIGHT

RIGHT

CHA

CHB

+ - + -

+ - + -

+ - + -Used with the MXA-6801-A2/A4

4 2

3 1SERIALINPUT

SERIALOUTPUTS

REMOTECHL/R

MXA-6800-M3LEFT

CH

LEFT RIGHT

RIGHT

CHA

CHB

+ - + -

+ - + -

+ - + -


Installation Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

Figure 9-5. Rear Adaptor 6800B-AA for Balanced AES Input

- -

++

A

Audi

o

R

L

Serial Digital Video with Multiplexed Audio

Serial Digital Video Input

AES Input # 1

AES Input # 2

AUD

IO



Figure 9-6. Using the 6800B-AA Rear Adaptor for Balanced Analog Audio

- -

++

A

Audi

o

R

L

Serial Digital Video withMultiplexed Audio

Serial Digital Video Input

Channel ARight Input

Channel ALeft Input


Installation Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

Figure 9-7. FR680x Signal Connections and Signal Flow Diagramfor MXA-6800-AES

Serial DigitalVideo In

Serial Digital Video Out with Multiplexed Audio

AES-75

MXA-6800-AESSerial Digital Video with Multiplexed Audio

Serial Digital Video

AES-75

AES-75

MXA-6800-AES

SERIALINPUT

AES INPUT 2 NC

SERIAL OUTPUT

2 1

4 3

AES INPUT 1 NC



Figure 9-8. FR680x Signal Connections and Signal Flow Diagramfor MXA-6801-A2/A4

Serial DigitalVideo In

Serial Digital Video Out with Multiplexed Audio

MXA-6801-A2/A4Serial Digital Video with Multiplexed Audio

Serial Digital Video

MXA-6800-xA

SERIALINPUT

SERIAL OUTPUT

2 1

4 3

+

+

_

_

Channel A Left

Channel A Right

Channel A LeftChannel A Right

Channel B LeftChannel B Right

When using the MXA-6801-A2/A4 in the FR680x frame, the user can only input one channel (left and right pairs).


Jumper Settings Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

Jumper Settings

Model No. Mounting Frame

Rear Module/ Back Module

Jumper Settings (8 in total)

PCB Screened ID

MXA-6800-AESC FR-680x None Unbalanced AES 75Ω MXA-6800AESC

MXA-6800-AES-70C FR-700x MXA6800-M1 Unbalanced AES 75Ω MXA-6800AESC

MXA-6800-AES-68B FR-680x 6800B-AA Balanced AES 110Ω MXA-6800AESB

MXA-6800-AES-70B FR-700x MXA6800-M2 Balanced AES110Ω MXA-6800AESB

MXA-6801-A2-68 FR-680x 6800B-AA 2 Balanced Analog Inputs MXA-6801-A2/A4

MXA-6801-A4-70 FR-700x MXA-6800-M3 4 Balanced Analog Inputs MXA-6801-A4/A4

All MXA-6801-A2/A4 modules have bridge-through (loop-through) >20 Kw termination capability on the digital and analog inputs.


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module Jumper Settings

MXA-6800-AES

Figure 9-9. MXA-6800-AES Full Board View with Jumper Settings

AES Input # 2Unbalanced AES (75 Ohm termination)

J8J9

J10

J14

Balanced AES (110 Ohm termination)

J8J9

J10

J14

For AES # 2 Balanced or Unbalanced loop-through, set J8 as shown:

No Jumper Plug

J2

J2

Local/Remote Control

Remote

Local

J4

Should always be OFFduring normal operation.

AES Input # 1Unbalanced AES (75 Ohm termination)

Balanced AES (110 Ohm termination)

For AES # 1Balanced or Unbalanced

loop-through, set J11 as shown:No Jumper Plug

J15J11J12

J13

J11J12

J13

J15

OFF



MXA-6800-A2/A4

Figure 9-10. MXA-6801-A2/A4 Full Board with Jumper Settings

OperationThe seven segment LED display and discrete LEDs (on the front edge of the board) show the current status of the MXA-6801-A2/A4. The LED readout displays abbreviated names for the functions/parameters selected by the Rotary Switch (SW1).

The MXA-6801-A2/A4 has three operating modes (OS1, OS2, OS3) and the SW1 is used to select specific functions/parameters within them. For more detailed information on functions/parameters, the SW1 and the use of the Toggle Switch (SW2).

See “Control Parameters Summary” on page 142 and “Control Parameter Details” on page 147 for more information.

Should always be during normal operation.

OFF

J4 OFFJ2J2 Remote

LocalLocal/Remote Control

Analog AudioInput Termination

Channel B Right

Channel A Right

Channel B Left

Channel A Left

Open (default)

Open (default)

Open (default)

Open (default)

600 Ω

600 Ω

600 Ω

600 Ω

Common-Mode Rejection Adjustment Potentiometers:

these are factory set and sealed.

Warning! DO NOT ADJUST

THESE POTS



Common Mode Adjust Potentiometers (pots)There are four factory-set and sealed-pots on the MXA-6801-A2/A4 (analog MXA). Do not adjust these pots.

LED Indicators (MXA-6800-AES)The table below describes the LED indicators and functions:

Name Color Function

Video Pres Green Video present and locked

AWS1 Pres Green AES input #1 present

AWS2 Pres Red AES input #2 present

AWS1 Err Red Error on AES input #1 (set Hex switch SW1 to display audio error number)

AWS2 Err Red Error on AES input #2 (set Hex switch SW1 to display audio error number)

Audio Mute Yellow Audio outputs are muted (LED flashes)

Config Err Red Hardware error (Exception: This light is on when the module is powered up)



Figure 9-11. Front Edge with Hex, Toggle/Hex Switches,

LEDs (for MXA-6800-AES)

AES1 Present LED (Green)

AES2 Present LED (Green)

AES1 Error LED (Red)

AES2 Error LED (Red)

Audio Mute LED (Yellow)

Config Error LED (Red)

Hex Switch

Toggle Switch

Hex Display



LED Indicators (MXA-6801-A2/A4)The table below describes the LED indicators and functions:

*When the analog input level is greater than 23.3 dBu (approximately -1 dBFS), a peak detector light will turn on for the corresponding input. A peak detector light will increase in brightness as the input level increases from 23.3 dBu, a light flicker to fully bright. If occasional peaks are seen on the input, a peak detector light may flash on for a period of time. The period of time is dependent upon the duration of the peak. Reduce the gain or input signal level to avoid clipping.

Name Color Function

Video Pres Green Video present and locked

Peak Ch A Left

Red *Overload/clipping on Channel A left input

Peak Ch A Right

Red *Overload/clipping on Channel A right input

Peak Ch B Left

Red *Overload/clipping on Channel B left input

Peak Ch B Right

Red *Overload/clipping on Channel B right input

Audio Mute Yellow Audio outputs are muted (LED flashes)

Config Err Red Hardware error (Exception: This light is on when the module is powered up)



Toggle Switch and LED Display OperationAny function/parameter (embedding mode, embedding group, gain, or delay) can be adjusted with the Toggle Switch. Moving the Toggle Switch (SW2) down or to the left decreases the value of the parameter. Moving the SW2 up or to the right increases the value of the parameter. If the value of a parameter is negative, all decimal points are lit. When the maximum value of a parameter is reached, the value wraps around to the opposite end of the range: up/down or left/right, depending on which way the PCB was installed (vertically or horizontally).

Figure 9-12. Front Edge with Hex, Toggle/Hex Switches,

LEDS (for MXA-6801-A2/A4)

PEAK CHA LEFT LED (Red)

PEAK CHA RIGHT LED (Red)

PEAK CHB LEFT LED (Red)

PEAK CHB RIGHT LED (Red)

Audio Mute LED (Yellow)


Hex Switch

Toggle Switch

Hex Display


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module Control Parameters Summary

Control Parameters SummaryTo modify the values of the function, turn the Rotary (Hex) Switch (SW1) as indicated in Table 1-2. The LED display will show a different acronym for each SW1 position and flashes between the function acronym and its value. To increase or decrease the value, move the Toggle switch (SW2) left/down or right/up. See “Toggle Switch and LED Display Operation” on page 141 for more information.

When using the MXA-6801-A2/A4 (Analog MXA), the Hex switch should be left in position 0 during normal operation. This allows the Analog MXA to operate at its maximum performance level.


Control Parameters Summary Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

Operator Mode 1 (OS1)

SwitchPosition(SW1)

Function Range(Adjusted using Toggle Switch SW2) Hex

0 No Adjustment ---

1 Operator Mode Operator Mode (OS1, OS2, OS3) con

2 Lock Mode 525, 625, Auto. See “Lock Mode” on page 154 for further information.

Loc

3 Embed Mode See “Audio Embedding” on page 156 for further information.

Ebd

4 Embed Group 1, 2, 3, 4 Ebg

5 AES1: L Channel GainChannel A: L input gain

MXA-6800-AES:-121 dB to +6 dB in steps of 0.25 dB. See “Gain Value” on page 154 and “Stereo Mode” on page 155 for further information.

1gL

MXA-6801-A2/A4: -10 dB to + 10 dB in steps of 0.5 dB.

6 AES1: R Channel GainChannel A: R Input Gain

MXA-6800-AES:-121 dB to +6 dB in steps of 0.25 dB. See “Gain Value” on page 154 and “Stereo Mode” on page 155 for further information.

1gr

MXA-6801-2A/A4: -10 dB to +10 dB in steps of 0.5 dB.

7 AES2: L Channel GainChannel B: L Input Gain

-121 dB to +6 dB in steps of 0.25 dB. See “Gain Value” on page 154 and “Stereo Mode” on page 155 for further information.

2gL

MXA-6801-A2/A4: -10 dB to + 10 dB in steps of 0.5 dB.

8 AES2: R Channel GainChannel B: R Input Gain

-121 dB to +6 dB in steps of 0.25 dB. See “Gain Value” on page 154 and “Stereo Mode” on page 155 for further information.

2gr

MXA-6801-A2/A4: -10 dB to + 10 dB in steps of 0.5 dB. 2gr

9 AES1: L Channel DelayChannel A: L Input Delay

0 to 1.2 seconds in steps of 20 µs. See “Gain Value” on page 154 and “Stereo Mode” on page 155 for further information.

1dL



A AES1: R Channel DelayChannel A: R Input Delay


1dr

B AES2: L Channel DelayChannel B: L Input Delay


2dL

C AES2: R channel delayChannel B: R Input Delay


2dr

D AES1: Swap L/R ChannelsChannel A: Swap L/R Channels

On/Off (Off: Do not swap L/R channel) 1SP

E AES2: swap L/R ChannelsChannel B: Swap L/R Channels

On/Off (Off: Do not swap L/R channel) 2SP

F Swap AES InputsSwap Channel A with Channel B

On/Off (Off: Do not swap inputs) ASP

SwitchPosition(SW1)

Function Range(Adjusted using Toggle Switch SW2) Hex


Control Parameters Summary Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module


SwitchPosition(SW1)

Function Range (Adjusted using Toggle Switch SW2) Hex

0 No Adjustment ---


2 Sample Distribution See “Switch Position 2 and Function” on page 155for further information.

Sd

3 Automatic Mute/Silence on Audio Error

On/Off (Not applicable for the MXA-6801-A2/A4)

SEr

4 Mute Duration See “Mute Duration” on page 155 for further information.

Sdu

5 Display Audio Error no. 0 = No audio errors see (Not applicable for the MXA-6801-A2/A4) for further information.

AEr

6 Mono/Stereo Audio On/Off (When On, the Left/Right pairs are treated as stereo signals) for further information.

ACh

7 Reserved ...

8 AES1: L Channel Mute Channel A: L Input Mute

On/Off (When On, the mute duration sets the rate.) 1SL

9 AES1: R Channel Mute Channel A: R input mute

On/Off (When On, the mute duration sets the rate.) 1Sr

A AES2: L Channel Mute Channel B: L Input Mute

On/Off (When On, the mute duration sets the rate.) 2SL

B AES2: R Channel Mute Channel B: R Input Mute

On/Off (When On, the mute duration sets the rate.) 2Sr

C AES1: L Channel Invert Channel A: L Input Invert

On/Off (When On, the channel is inverted.) 1FL

D AES1: R Channel Invert Channel A: R Input Invert

On/Off (When On, the channel is inverted.) 1Fr




E AES2: L Channel Invert Channel B: L Input Invert

On/Off (When On, the channel is inverted.) 2FL

F AES2: R Channel Invert Channel B: R Input Invert

On/Off (When On, the channel is inverted.) 2Fr

SwitchPosition(SW1)

Function Range (adjusted using toggle switch SW2) Hex

0 No Adjustment ---


2 AES Data Format AES audio data (Off) or AES non-audio data (On)(Not applicable for the MXA6800-Ax)

dF

3 - 9 Reserved …

A - E Reserved …

F Factory Recall On or Off (When On, the factory default settings are recalled.)

dEF

SwitchPosition(SW1)

Function Range (Adjusted using Toggle Switch SW2) Hex


Control Parameter Details Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

Control Parameter DetailsThe following table show the three Operator Modes with possible rotary switch positions (SW1) and the resulting parameters. See “Audio Error Messages” on page 153 for further information (not applicable to the MXA-6800-A2/A4).

Operator Mode 1 The following table describes the Operator Mode 1 with switch positions 0 to 9, A to F:

OperatorMode

SwitchPosition Result

1 0 No adjustment when the Hex switch is in this position, no parameters can be altered. Three dashes “- - -” will be displayed.

1 1 Operator mode can be changed to OS1, OS2, OS3.

1 2 Lock mode can be set to one of the following:

• Auto system detects the standard of the serial digital input andautomatically sets the standard.

• 525 or 625 forces the system to the selected standard. See the default is Auto.

1 3 Embed mode:

• The default is mode 1.

See “Audio Embedding” on page 156 for further information.

1 4 Embed Group:

• Can be set to group 1, 2, 3, or 4. The default is group 1.

1 5 MXA-6800-AES: AES1, L Channel Gain. The Channel Gain has a range of -0 x 1E8 to +0 x 018 or -121 dB to +6 dB, in increments of 0.25 dB. The default is +0.25dB.

MXA-6801-A2/A4: Channel A: Left input gain.The Channel Gain has a range of -0Ax to +0Ax or -10 dB to +10 dB in increments of 0.5 dB. The default is 0 dB (unity gain).


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module Control Parameter Details

1 6 MXA-6800-AES: AES1: R Channel Gain The Channel Gain has a range of 0 x 1E8 to +0x018 or -121 dB to +6 dB in increments of 0.25 dB. The default is +0.25 dB.

MXA-6801-A2/A4: Channel A: Right input gain.The channel gain has a range of -0 A x to +0Ax or -10 dB to +10DB in increments of 0.5 dB. The default is 0 dB (unity gain).

1 7 MXA-6800-AES: AES2: L Channel Gain The channel gain has a range of -0x1E8 to 0x018 or -121 dB to +6 dB in increments of 0.25 dB. The default is +0.25 dB.

MXA-6801-A2/A4: Channel B: Left input gain.The channel gain has a range of -0 Ax to +0 Ax or -10 dB to +10 dB in increments of 0.5 dB. The default is 0 dB (unity gain).

1 8 MXA-6800-AES: AES2: R Channel GainThe channel gain has a range of -0 x 1E8 to 0 x 018 or -121 dB to +6 dB in increments of 0.25 dB. The default is +0.25 dB.

MXA-6801-A2/A4: Channel B: Right input gainThe channel gain has a range of -0 Ax to +0 Ax or -10 dB to +10 dB in increments of 0.5 dB. The default is 0 dB (unity gain).

1 9 AES1: L Channel Delay or Channel A: L input delayThe channel delay has a range of 0 x 000 to +0 x EA5F or 0 sec to 1.2 sec in increments of 20 µs. The default is 0 sec.

1 A AES1: R Channel Delay or Channel A: R input delayThe channel delay has a range of 0 x 000 to +0 x EA5F or 0 sec to 1.2 sec in increments of 20 µs. The default is 0 sec. See “Gain Value” on page 154 for more information.

1 B AES2: L Channel Delay or Channel B: L input delayThe channel delay has a range of 0 x 000 to +0 x EA5F or 0 sec to 1.2 sec in increments of 20 µs. The default is 0 sec. See “Gain Value” on page 154 for more information.

1 C AES2R: Channel Delay or Channel B: R input delayThe channel delay has a range of 0 x 000 to +0 x EA5F or 0 sec to 1.2 sec in increments of 20 µs. The default is 0 sec. See “Gain Value” on page 154 for more information.

OperatorMode




Operator Mode 2The following table describes the Operator Mode 2 with switch positions 0 to 9 and A to F:

1 D AES1: Swap L/R channels or Channel A: Swap L/R channels.

• If set to Off, do not swap the L/R channels.

• If set to On, swap the L/R channels. The default is Off.

1 F Swap AES inputs or Swap Channel A with Channel BIf set to Off, do not swap the AES/Channel inputsIf set to On, swap the AES/Channel inputs. The default is Off.

OperatorMode


OperatorMode


2 0 No adjustmentWhen the Hex switch is in this position, no parameters can be altered and three dashes “- - -” will be displayed on the Hex display.

2 1 Operator mode: Can be changed to OS1, OS2, OS3.

2 2 Sample Distribution

• When the Video Standard is 525, the valid range is 0 to 3.

• When the Video Standard is 625, the valid range is 0 to 2.

The default is 0. See “Switch Position 2 and Function” on page 155 for further information.

2 3 Automatic Mute/Silence on Audio Error

• If this parameter is turned On, mute both channels in the AES input, which displays the audio error.

• The default is Off.

(Not applicable for the MXA-6800-A2/A4)



2 4 Mute Duration

• Fade Rate from current audio level to silence measured in seconds.

The value range is 0 - 7. The default is 4 (1 second). See “Mute Duration” on page 155 for further information.

2 5 Display Audio Error Number.(Not applicable in the MXA-6801-A2/A4)

2 6 Mono or Stereo Audio

• If this parameter is set to Mono (Off), then Left and Right signals will be handled individually.

• If it is set to Stereo (On), they will be treated the same. The same rule applies to the delay, mute, and channel invert.

• The default Stereo is On.

Channel Gain for the MXA-6800-AES

• The MXA-6800-AES, the AES1: L channel gain will be equal to the AES1: R channel gain.

• The AES2: L channel gain will be equal to AES2:R channel gain.

Channel Gain for the MXA-6801-A2/A4

• The MXA-6801-A2/A4, the Channel A: Left input gain will be equal to the Channel A.

• Right input gain and the Channel B: Left input gain will be equal to the Channel B: Right input gain.

2 7 Reserved

• The Hex display will display three dots, “...”

2 8 Mute AES1: L ChannelMute Channel A: L inputIf this parameter is On, the Left channel on AES input 1 will be muted. The default is Off.

OperatorMode




2 9 Mute AES1: R ChannelMute Channel A: R input If this parameter is ON, the Right channel on AES input 1 will be muted. The default is Off.

2 A Mute AES2: L Channel Mute Channel B: L inputIf this parameter is On, the Left channel on AES input 2 will be muted. The default is Off.

2 B Mute AES2: R Channel. Mute Channel B: R input.If this parameter is On, the Right channel on AES input 2 will be muted. The default is Off.

2 C Invert AES1: L ChannelInvert Channel A: L inputIf this parameter is Off, the Left channel on AES input 1 will be inverted. The default is Off.

2 D Invert AES1: R Channel Invert Channel A: R inputIf this parameter is Off, the Right channel on AES input 1 will be inverted. The default is Off.

2 E Invert AES2: L Channel Invert Channel B: L inputIf this parameter is Off, The Left channel on AES input 2 will be inverted. The default is Off.

2 F Invert AES2: R ChannelInvert Channel B: R inputIf this parameter is Off, The Right channel on AES input 2 will be inverted. The default is Off.

OperatorMode




Operator Mode 3The following table describes the Operator Mode 3 with switch positions 0 to 2, 3 to E and F:

OperatorMode


3 0 No adjustment

• When the Hex switch is in this position, noparameters can be altered and three dashes (“- - -”) will bedisplayed in the Hex display.

3 1 Operator mode

• Can be changed to OS1, OS2, OS3.

3 2 AES Data Format

• Set On when the AES input is non-audio data in AES format.

• The default is Off (audio data).

(Not applicable in the MXA-6801-A2/A4)

3 3 to E Reserved

• These switch positions are reserved in this mode, and the Hex display will show three dots (“. . .”).

3 F Factory Recall

• On or Off. When On, the factory settings are recalled. The default is Off.



Audio Error MessagesThe following table describes the Audio Error messages. Error messages are not applicable to the MXA-6800-A2/A4:

AudioErrorNumber

Error Name Error Condition

0 No Error No errors

1 AES Input #1 receiver error

An AES input receiver error has occurred (crc, slipped sample).

2 AES Input #2 receiver error

An AES input receiver error has occurred (crc, slipped sample).

3 Embed Error #1

Unintentional overwrite of auxiliary data. See “Audio Error Numbers” on page 155 for further information.

4 Embed Error #2

Internal Audio FIFO over/underflow of auxiliary data:

• Asynchronism of audio to video clocks

• Incompatible sample distribution table

• RX_FIFO line is set too close.

See “Audio Error Numbers” on page 155 for further information.

5 Embed Error #3

Expected audio group is missing or in conflict with selectedgroup. See “Audio Error Numbers” on page 155 for further information.

6 Embed Error #4

Invalid embedding mode or missing internal video signal.See “Audio Error Numbers” on page 155 for further information.

7 Embed Error #5

Embedding error caused by embedding mode selected and/orembedded audio group missing on video input.See “Audio Error Numbers” on page 155 for further information.



Lock Mode When the Lock Mode parameter is set to either 525 or 625, the system is forced to lock to only 525 or 625. Neither of these modes will force the output to a particular video standard. When the Lock Mode is set to Auto, the system automatically detects the input and locks to the detected standard.

Audio Error Messages

As seen in the feature list, there are six embedding modes (really five since one of them Auto selects the follow-up or overwrite mode.

Gain ValueThe gain value is adjusted in increments of 0.25 dB or 0.5 dB and the delay value in increments of 20 ms. Since the Hex Display can only display three characters, the values are displayed in Hex instead of decimal. For example, if the delay value displayed is 1FE, then the delay is 10.2 ms (20 ms times 1FE [510 decimal]). Since the delay range is large, 0 to EA5F, the last digit is not displayed. The third decimal point flashes when the last digit changes value. See “Hex to Decimal Conversion” on on page 158 for more information.

Item Function

Off Chooses the default “do nothing” mode.

Auto Automatically selects follow-up or overwrite embedding using sample distribution from the ROM table.

Justify Left-justify embedding after EAV.

Follow Embeds the group after the last embedded group.

Ovrwrite Overwrites the existing group. (This mode uses the same sample distribution as in the group that is being overwritten.

Cin-EMB Strips ADS clean and left-justifies embedding.

Clean Strips ADS clean and does not embed.

For proper operation, all pre-existing ADS groups must be left-justified.

See Appendix A for a detailed description and representation of graphics.



Switch Position 2 and FunctionThe following table describes Switch position 2 and Sample Distribution function in 525 and 625:

Mute Duration The table below describes the Mute duration range of 0 to 7 (0 = 0 sec is hard mute):

Stereo Mode When Stereo Mode is enabled, the left and right controls are tied.

Audio Error Numbers If Audio Error numbers 3 to 7 are displayed, there is a hardware fault.

525 Switch Position

Function625 Switch Position

Function

0 Skip lines 11 and 274 (default, as per standard)

0 Skip lines 7 and 320 (default)

1 Skip no lines 1 Same as 0

2 Same as 0 2 Skip no lines (similar to early Sony™ embedders)

3 Skip lines 11, 12, 274 and 275

3 to 7 Reserved for future use

4 to 7 Reserved for future use

0 = 0 sec 4 = 1.00 sec

1 = 0.25 sec 5 = 1.25 sec

2 = 0.50 sec 6 = 1.50 sec

3 = 0.75 sec 7 = 1.75 sec


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module Swapping Channels via Remote Control

Swapping Channels via Remote ControlThe GPI swap controls are available only when the MXA is used in an FR-7000 frame. To control channel swapping from the GPI, set the Remote/Local jumper to Remote. The default position for the Remote/Local jumper is Local. When the jumper is set to Local, the GPI controls will not function. When the jumper is set to Remote, the Hex switch swap controls will not function. The GPIs are active low.

To swap AES1 Left/Right with AES2 Left/Right, or Channel A Left/ Right with Channel B Left/Right, the Channel GPI control should be enabled.

The Left/Right GPI control should be enabled in order to swap AES1 Left with AES1 Right; AES2 Left with AES2 Right; Channel A Left with Channel A Right; or Channel B Left with Channel B Right. When the Left/Right GPI control is asserted, both left/right pairs are swapped.

Audio EmbeddingAll MXA modules embed audio data into one audio group at a time, filling positions W, X, Y and Z. See Figure 9-13 “Audio Group” on page 157 for more information. The group embedded is selected using the Hex switch on the module edge.

The MXA-6801-A2 accepts only two audio channels: Channel A Left and Channel A Right. Positions W and X are used for Channel A Left and Right, respectively. When using the MXA-6801-A2, audio group positions Y and Z are muted. Since the MXA modules embed audio in four channels at a time, it is not possible to use a second MXA-6801-A2 to fill positions Y and Z with additional audio data.

The MXA-6801-A4 accepts four audio channels: Channel A Left, Channel A Right, Channel B Left, and Channel B Right. These channels are embedded in positions W, X, Y, and Z, respectively.


Swapping Channels via Remote Control Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

Figure 9-13. Audio Group

One audio group

W X Y Z

X = 2, 6, 10, 14

Group 2

Y = 3, 7, 11, 15

Group 3

Z = 4, 8, 12, 16

Group 4

W = 1, 5, 9, 13

Group 1


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module Converting Hex to Decimal Numbers

Converting Hex to Decimal NumbersSince the Hex display can show only three characters, the values are shown in Hex instead of Decimal numbers. For example, to convert from Hex to Decimal numbers, see Figure 9-14, “Example of Hex to Decimal Conversion’’.

Figure 9-14. Example of Hex to Decimal Conversion

Decimal Number Hex Number

0 0

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

10 A

11 B

12 C

13 D

14 E

15 F

A F 6x x x 256 xx 16++Hex Number Decimal Number

x 1= 171110161 160A F6 A F 6 x 162x 162 15


MXA-6800-AES Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

MXA-6800-AESThe following table describes the functions of the MXA-6800-AES:



YY

YY


SS

YY


SSSS

YYYY


YY

YN


YYYY

NYNN

48 KHz

1 0 - 3 (Channel Mode)

[0000] Not indicated[0001] 2 channel[0010] Mono[0011] Primary/secondary[0100] Stereo[0101] to [1111]

SSSSSS

YYYYYY

4 - 7 (User bit Mode)

[0000] Not indicated[0001] 192 bit[0010] AES 18[0011] User defined[0100] to [1111]

SSSSS

YYYYY



SSSS

YNNN

20-bit


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module MXA-6800-AES


[000] Not indicated [100][100] All other states

SSS

YNN

20-bit

3 0 - 7 Multichannel modes S Y

4 0 - 1 AES11 sync reference S Y

5 0 - 7 Unused S Y

6- 9 ASCII source ID S Y

10- 13 ASCII destination ID S Y

14- 17 Local sample address S Y

18- 21 Time-of-day address S Y

22 0 - 7 C data reliability S Y

23 0 - 7 CRCC S Y Recalculated CRC

Validity (V) Bit N Y V is set to zero (0)

User (U) Bit S Y

Audio Sampling Frequencies (KHz) 32, 44.1, 48 KHz (RX); 48 KHz (TX)

Audio Sample Word Length (bit) 16 - 24 bit (RX); 20-bit (TX)



MXA-6801-A2/A4 Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module

MXA-6801-A2/A4The following table describes the functions of the MXA-6801-A2/A4:



NN

NY


NN

YN


NNNN

YNNN


NN

YN


NNNN

NYNN

48 KHz

1 0 - 3 (Channel mode)

[0000] Not indicated[0001] 2 channel[0010] Mono[0011] Primary/secondary[0100] Stereo[0101] to [1111]

NNNNNN

NNYNYN

Either Mono or Stereo dependent upon card setup.

4 - 7 (User bit mode)

[0000] Not-indicated[0001] 192-bit[0010] AES-18[0011] User-defined[0100] to [1111]

NNNNN

YNNNN



NNNN

YNNN

Use of auxiliary sample bits is not defined.


Chapter 9: MXA-6800-AES and MXA-6801-A2/A4 Video/Audio Multiplexer Module MXA-6801-A2/A4

3 - 5 (Sample length)


NYN

NYN

20-bit

3 0 - 7 Multichannel modes N N

4 0 - 1 AES11 sync reference N N

5 0 - 7 Unused N N

6 - 9 ASCII source ID N N

10 - 13 ASCII destination ID N N

14 - 17 Local sample address N N

18 - 21 Time-of-day address N N

22 0 - 7 C data reliability N N

23 0 - 7 CRCC N Y

Validity (V) Bit N Y V is set to zero (0)

User (U) Bit N Y U is set to zero (0)

Audio Sampling Frequencies (KHz) 48 KHz (TX)

Audio Sample Word Length (bit) 20-bit (TX)



Chapter 10

VFS-6801 Serial Component FrameSynchronizer Module

OverviewThe VFS-6801 is a standalone Serial Component Frame Synchronizer which provides infinite phasing relative to reference and passes all ancillary data. The reference video signals, NTSC and PAL-B, can be connected at the same time, allowing for automatic switching between 525 and 625 line standards.



Chapter 10: VFS-6801 Serial Component Frame Synchronizer Module Specifications

Specifications

Serial Video Inputs


Item Specifications

Number 1, On board bypass relay protected

Standards SMPTE: 259M-C; 270 Mb/s, 525/625 component


Impedance 75Ω



Equalization Automatic up to: > 23 dB, 259 M-C

Item Specifications

Number 4

Standards 259M-C; 270 Mb/s, 525/625 component


Impedance 75Ω






Minimum Delay 1.6 µs

Jitter < 500 ps


Specifications Chapter 10: VFS-6801 Serial Component Frame Synchronizer Module

Phasing

Storage

Reference Input

Item Specifications

Resolution 37 ns

Range Infinite

Item Specifications


Data Path 10 bits

Item Specifications

Level 1 Vp-p

Signal Type Analog Composite NTSC/PAL-B

Connector BNC

Impedance 75Ω

Power Dissipation • Positive rail: 6.4 W

• Negative rail: 0.2 W

• Total: 6.6 W


Chapter 10: VFS-6801 Serial Component Frame Synchronizer Module Installation

InstallationThe VFS-6801 module can be installed in a Leitch 6800 series, 7001 series, or FR-7000MB MIX BOX frame.

Figure 10-1. Back Module and Overlay

VFS-6801-M

SERIAL OUTPUTS

VIDEOINPUT

BYPASSPATH

GPI 525 GENLOCK 625

VFS-6801 VIDEO INPUT

SERIAL OUT

1

2

1

2

3

4

GENLOCK 625

GENLOCK 525

BYPASSPATH

GPI

This overlay is used when the VFS-6801 module is installed.

This back box is used when the VFS-6801 module is installed into either an FR-7001 series or FR-7000MB MIX BOX frame.


Operations Chapter 10: VFS-6801 Serial Component Frame Synchronizer Module

OperationsThe following controls and indicators are located at the front edge of the module:

Controls• The HEX switch (SW1) allows you to select the control parameters.

(See “Switch Settings” on page 168.)

• The Adjuster two-position up/down toggle switch (SW2) allows you to adjust the parameter values.

• The Service Push button allows you to locate the position of the particular module in the network when one or multiple VFS-6801 or any other modules are linked together over a 75Ω network (DigiNet) and connected to the central controller (PC or Leitch DigiNet panel).

LED Indicators• The 625 Auto 525 - 360, 270, 143 LEDs (green) show the standard as

follows: the 525/625 LEDs indicate a detected standard if the Auto LED is On and a forced line standard if the Auto LED is Off.

• The Data Pres LEDs (green) lights to indicate that a valid source of serial digital video is present at the input of the module.

• The Service LED (amber) lights for a short time upon power up but remains off during normal operation. If the Service LED is blinking or continuously on, a hardware failure has been detected.

Jumpers• ICLK: The ICLK jumper is not used.

• OCLK: The OCLK jumper has to be installed.

• Frame ID: Frame ID is made possible by reading the silicon serial number (if installed in the RJ11 at the back of the frame). The two jumpers are shipped in the Off position from the factory and must both be in the On position to enable reading of Frame ID.


Chapter 10: VFS-6801 Serial Component Frame Synchronizer Module Operations

SwitchesSwitches SW4 and SW5 can be used to identify the Frame ID if the silicon serial number is not installed. There are 256 possible numeric combinations provided by these switches.

Switch Settings

SW1 Switch Position

Function SW2 Down SW2 Up

0 Operational

1 Standard Forced *Auto

2 Reserved

3 Reserved

4 Forced Standard 625 *525

5 GPI *Disable Enable

6 H Phase **Decrease Increase

7 V Phase **Decrease Increase

8 Freeze *Off On

9 Freeze Field *Frame

A Field Freeze mode *Field 1 Field 2

B Hot Switch Disable *Enable

C Hot Switch mode Black *Last Field

D Forced Black *Off On

E Frame Sync mode Delay Synchronize

F Factory Recall

*Factory Preset.**Factory Preset, set to minimum delay.


Operations Chapter 10: VFS-6801 Serial Component Frame Synchronizer Module

GPI

The GPIs operate in a level detect manner. See settings below:

GPI1 Freeze Off/High On/Low

GPI2 Forced Black Off/High On/Low

SW1 positions 8 and D, are overridden by enabling the associated GPI (GPI1 and GPI2).


Chapter 10: VFS-6801 Serial Component Frame Synchronizer Module Operations


Chapter 11

VTS-6801 Video Timing Switcher

OverviewThe VTS-6801 is a dual digital video timing switcher. The VTS can be used as a digital line delay, a 2-by-1 clean-switch router, and as a backup video switch. When the VTS is used as a back-up video switch, on detection of loss of video or a “noisy” video input, the VTS routes the other program input source or black to the program output. The VTS can be genlocked to either program input or an external analog reference. The VTS also includes two GPIs, which can be used to control each 2-by-1 cleanswitch.



Chapter 11: VTS-6801 Video Timing Switcher Features

FeaturesThe VTS-6801 has the following features:

• Digital line delays

• 2 by 1 clean-switch router

• Back-up video switch

• Two serial digital inputs

• Four serial outputs

• Retiming to an external analog reference or a digital input

• GPI control for video switching

• Horizontal phase adjustment

Figure 11-1. VTS-6801 Block Diagram

Serial Interface

LineDelay

LineDelay

Serial Interface

ExternalReferenceInterface

Enable

GPI 1

PGM 1Serial Input

GPI 2

PGM 2Serial Input

External Reference

Enable

VideoProcessor

VideoProcessor

Video SyncProcessor

BlankVideo

BlankVideo

PGM 1Serial

Outputs

PGM 2Serial

Outputs

Polarity

Polarity


Specifications Chapter 11: VTS-6801 Video Timing Switcher

Specifications

Serial Video Inputs


Item Specification

Operating Standard 270 Mb/s, 525/625

Number 2 program inputs

Standard SMPTE: 259 M-C; 270 Mb/s, 525/625 component


Impedance 75Ω



Equalization Automatic up to 23 dB, 259 M-C

Item Specification

Number 2 pairs of program outputs

Standards 259 M-C; 270 Mb/s, 525/625 component


Impedance 75Ω





Overshoot <10% of amplitude (all outputs terminated)


Chapter 11: VTS-6801 Video Timing Switcher Specifications

Analog Reference

Load Supply

Control

OperationDiscrete LEDs at the front edge of the board provide feedback about the current configuration and state of the VTS-6801. The VTS-6801 also has a rotary hex switch which is used to select various functions, each of which can be modified with the use of the toggle switch.

Item Specification

Signal Type Composite sync or composite video

Impedance 75Ω or high impedance

Input Level Composite sync 0.2 to 4 V or composite video 0.6 to 2 V

Item Specification

VTS-6801 6.5 W, + 6.5 V (1 A), -6.5 V (1 mA)

Item Specification

GPI Input 1 and 2 Operated by connecting to 0 V or 5 V (setup dependent), input range 0 to 5 V



LED Indicators

LED Color Indication

525 Green Force standard to 525.

Auto Green Standard is matched to that of the chosen reference.

625 Green Force standard to 625.

Lock 1 Green Input 1 video is present and locked.

Lock 2 Green Input 2 video is present and locked.

Lock Ref Green External Analog reference is present and locked.

Err 1 Red Error on Input 1 video (see Note *).

Err 2 Red Error on Input 2 video (see Note *).

Err Ref Red Error on Analog Reference (see Note 1).

Out1-1 Green Video at Output 1 is from Input 1.




Activity Green Replace serial video is enabled.

Spare 1 Green Video 1 is chosen as the reference (see Note **).

Spare 2 Green Video 2 is chosen as the reference (see Note **).

Config Err Red Hardware error, on during power up.

* Error lights for each video input and the External Analog Reference are used when there is either an error detected in the video, when the standard of the video does not match that chosen by the user, or when the input is not connected.

**When the Mode 1 and Mode 2 LEDs are both Off, the External Analog Reference is the board reference.


Chapter 11: VTS-6801 Video Timing Switcher Specifications

Figure 11-2. Back Module Signal Connections

Figure 11-3. Location of Termination Jumper

VTS-6801

6 4

SERIALOUT 2

SERIALOUT 1

5 3 2

PGM 2 IN PGM 1 INEXT REF

GPI 1GPI 2

1

External AnalogReference Termination

High- Z

75 Ω

+ 5D

+ 5A

+ 3.3D




Hex Switch

Toggle Switch

Out 1-2 LED (Green)

Auto LED (Green)

Out 1-1 Led (Green)Err Ref LED (Red)

Err 2 LED (Red)

Err 1 LED (Red)

Lock Ref LED (Green)

Lock 2 LED (Green)

625 LED (Green)

Out 2-1 LED (Green)

Activity LED (Green)

Spare 1 LED (Green)

525 LED (Green)

Spare 2 LED (Green)



Chapter 11: VTS-6801 Video Timing Switcher Toggle Switch and Hex Switch Operation

Toggle Switch and Hex Switch OperationAny function (switching standards or reference source), can be adjusted by using the Toggle Switch (SW2). If SW2 is mounted horizontally, it is adjusted Up/Down. If it is mounted vertically, it is adjusted Right/Left. Holding the SW2 down decreases the value of the function. Holding SW2 'up' increases the value of the function. When the maximum value of a function is reached, the value wraps around to the opposite end of the range. Turn the Hex switch, SW1, to the positions listed below to modify the value of the functions indicated.

Control FunctionsThe following table describes the control functions:

SW1Switch Position

Function

Range (adjusted using Toggle Switch SW2)

SW2Switch Position

Action Factory Settings

0 No adjustment

Up/RightDown/Left

No actionNo action

1 Lock mode 525, 625, Auto Up/RightDown/Left

Cycle UpCycle Down

Auto

2 Horizontal Delay

• 0 to 63.6 µs (525) in 37 ns steps

• 0 to 64 µs (625)in 37ns steps

Up/RightDown/Left

Increase DelayDecrease Delay

0 sec

3 Replace Serial

Enable/Disable Up/RightDown/Left

EnabledDisabled

Disabled

4 GPI 1 Enable Enable/Disable Up/RightDown/Left

EnabledDisabled

Disabled

5 GPI 2 Enable Enable/Disable Up/RightDown/Left

EnabledDisabled

Disabled

6 GPI 1 Polarity

High/Low Up/RightDown/Left

Active HighActive Low

Active Low


Toggle Switch and Hex Switch Operation Chapter 11: VTS-6801 Video Timing Switcher

7 GPI 2 Polarity

High/Low Up/RightDown/Left

Active HighActive Low

Active Low

8 PGM 1 Source Select

PGM 1 in, PGM 2 in Up/RightDown/Left

PGM 1 Out-- PGM 1 inPGM 1 Out-- PGM 2 in

PGM 1 outPGM 1 in


PGM 1 in, PGM 2 in Up/RightDown/Left

PGM 2 Out-- PGM 2 inPGM 2 Out-- PGM 1 in

PGM 2 outPGM 2 in

A Reference Source

PGM 1 in, PGM 2 in, External Reference

Up/RightDown/Left

Cycle UpCycle Down

External Reference

B Insert Black Enable/Disable Up/RightDown/Left

Output BlackOutput Other PGM Input

Output Other PGM Input

C External Reference Type

Sync or Composite Up/RightDown/Left

Composite Sync Composite

D Test mode Do not use. Off

E Replace Serial Time Delay

0 to 15 sec in 0.5 sec Steps see Replace Serial Time Delay, LED and Time Indication.

Up/Down Increase Time Delay and Decrease Time Delay

0 Sec

F Factory Recall

Enable Up/Right Recall factory settings

SW1Switch Position

Function

Range (adjusted using Toggle Switch SW2)

SW2Switch Position

Action Factory Settings


Chapter 11: VTS-6801 Video Timing Switcher Control Function Details

Control Function DetailsThe following table describes the control function in detail:

SwitchPosition(SW1)

Function Action Factory Settings

0 No adjustment

No parameters can be adjusted.

1 Lock mode Lock mode can be set to 525, 625, or Auto Detect. In Auto mode the system detects the standard of the chosen reference and automatically sets the system standard. Setting the Lock mode to 525 or 625 forces the system to the selected standard. If any input conflicts with the set standard, an error light will be illuminated for that particular input.

Auto

2 Horizontal Delay

This allows for horizontal timing adjustments or delays between the serial input video and the output. The adjustment is made in (37 ns) increments or decrements. Since both serial inputs are locked together horizontally, this affects both video streams.

0 sec

3 Replace Serial

When enabled the other SDI program is routed to the program output when the currently selected SDI program input signal is not lockable. If Insert Black is also enabled on breakup or loss of signal, Video Black is routed to the program output. If Replace Serial is disabled, PGM Input 1 is routed to PGM Output 1 and PGM Input 2 is routed to PGM Output 2 regardless of the state of the input signal (and regardless of the setting of Insert Black).

Disabled

4 GPI 1 Enable

When GPI 1 is enabled (and the GPI 1 input is asserted). the PGM Input 2 is switched to PGM Output 1. If the GPI 1 input is de-asserted, then PGM Input 1 is routed to PGM Output 1. If GPI 1 is disabled, then GPI 1 Input is ignored.

Disabled

5 GPI 2 Enable

If GPI Input 2 is asserted, then PGM Input 1 is switched to PGM Output 2. If GPI Input 2 is de-asserted, then PGM Input 2 is routed to PGM Output 2.

Disabled


Control Function Details Chapter 11: VTS-6801 Video Timing Switcher

6 GPI 1 Polarity

When the GPI 1 Polarity is set High and the GPI 1 Input is set High (5 V), the GPI 1 Input is asserted. When the GPI 1 Polarity is set Low and the GPI 1 Input is set Low (0 V), the GPI Input 1 is also asserted. The GPI 1 Input is only active when GPI 1 is enabled.

Active Low

7 GPI 2 Polarity

Same as for GPI 2 above. Active Low


This option controls the GPI status with the use of the switches instead of the BNC connector. The effect on the input switching is the same as when using the BNC, it is also affected by the polarity option. Corresponding outputs are listed in the table in the next section; See page 183. This option will only work if the GPI is disabled (SW1 position 4 and 5).

PGM 1 out-- PGM 1 in


Same as for GPI 2 above. PGM 2 out-- PGM 2 in

A Reference Setting

The reference for the VTS board can be set to either External Analog Reference, PGM Input 1, or PGM Input 2, as shown below:

External Analog Reference

B Insert Black If Insert Black is enabled (and if Replace Serial is also enabled), then video black is routed to the program output on breakup or loss of signal. If Replace Serial is not enabled then PGM Input 1 is routed to PGM Output 1 and PGM Input 2 is routed to PGM Output 2.

Output other PGM input

SwitchPosition(SW1)


Board Reference Mode 1 LED State

Mode 2 LED State

External Reference Off Off

PGM Input 1 On Off

PGM Input 2 Off On



C External Reference Type

Sets the type of External Analog Reference connected to the VTS. If set High, then sync input is selected (4 V sync); if set Low, then composite input is selected (300 mV).

Composite

D Test mode Toggle On to enable the Test mode. If an RS-232 port is connected to J1, then debug messages will be transmitted from the VTS to the RS-232 port. Set the computer terminal interface to no stop bits, 8 bits, and 1 parity bit (N81). This mode is meant for debugging purposes and should not be accessed during normal operation.

Off

E Replace Serial Time Delay

Replace Serial Time Delay works only if Replace Serial(SW1 position 3) is enabled. If Insert Black (SW1 position B) is set for “Output other PGM Input”, the Time Delay is set to X value other than 0 sec (0 to 15 sec in 0.5 secincrements). When either output is replaced by Serial Input on PGM 1 IN or PGM 2 IN due to signal loss or noisy signal, it will take X amount of time to recover from the moment when the original Input signal is fed back to PGM 1 IN/PGM 2 IN.Example:

• When PGM 1 IN is lost, PGM 2 IN is fed to PGM 1 OUT until PGM 1 IN becomes continuously valid throughout the delay time.

• Once valid and delay time has passed, it will switch back to PGM 1 IN to PGM 1 OUT.

• The process is identical for PGM 2 IN.

0 Seconds

F Factory Recall

This function will set the VTS back to its factory settings. Toggle SW2 Up Once and Down Four times to recall the factory settings. All of the LEDs on the card-edge will turn off and then back on when the factory settings are recalled.

SwitchPosition(SW1)



Control Function Details Chapter 11: VTS-6801 Video Timing Switcher

Replace Serial Time Delay (SW1 – position E) LED and Time Indication

When SW1 is in position E, read the following LEDs to determine the amount of time it takes to replace serial time delay:

OUT 1-1 (LED)

OUT 1-2 (LED)

OUT 2-1 (LED)

OUT 2-2 (LED)

ACTIVITY(LED)

TIME (sec.)

OFF OFF OFF OFF ON 0.5

OFF OFF OFF ON OFF 1

OFF OFF OFF ON ON 1.5

OFF OFF ON OFF OFF 2

OFF OFF ON OFF ON 2.5

OFF OFF ON ON OFF 3

OFF OFF ON ON ON 3.5

OFF ON OFF OFF OFF 4

OFF ON OFF OFF ON 4.5

OFF ON OFF ON OFF 5

OFF ON OFF ON ON 5.5

OFF ON ON OFF OFF 6

OFF ON ON OFF ON 6.5

OFF ON ON ON OFF 7

OFF ON ON ON ON 7.5

ON OFF OFF OFF OFF 8

ON OFF OFF OFF ON 8.5

ON OFF OFF ON OFF 9

ON OFF OFF ON ON 9.5

ON OFF ON OFF OFF 10

ON OFF ON OFF ON 10.5

ON OFF ON ON OFF 11

ON OFF ON ON ON 11.5

ON ON OFF OFF OFF 12

ON ON OFF OFF ON 12.5

ON ON OFF ON OFF 13

ON ON OFF ON ON 13.5

ON ON ON OFF OFF 14

ON ON ON OFF ON 14.5

ON ON ON ON OFF 15

To view a close-up of the Card-Edge “Replace Serial Time Delay”, see Figure 11-5, on page 184.



Figure 11-5. Card-Edge View of “Replace Serial Time Delay”


Input Switching with GPI Controls Chapter 11: VTS-6801 Video Timing Switcher

Input Switching with GPI ControlsInput switching between the two sets of outputs is controlled through the use of GPI inputs 1 and 2. Each GPI control determines the switching of one video input. The effect of a high or a low from each GPI control is also affected by the polarity option of SW1, positions 6 and 7.

The following tables describe the actions and effects when the polarity is active high, the opposite of this is true for a polarity of active low. If the GPI signal is low, then the input is passed straight through to its appropriate output. In contrast to this, if the GPI signal is high, then the input is switched to the opposite output. Shown below are the possible combinations of GPI controls and the input which appears at each output.

Polarity Active High

Polarity Active Low

Polarity = Active High GPI 1 = lowGPI 2 = low

GPI 1 = highGPI 2 = low

GPI 1 = lowGPI 2 = high

GPI 1 = highGPI 2 = high

Video appearing at Output 1 Input1 Input 2 Input 1 Input 2

Video appearing at Output 2 Input 2 Input 2 Input 1 Input 1

Polarity = Active Low GPI 1 = lowGPI 2 = low

GPI 1 = highGPI 2 = low

GPI 1 = lowGPI 2 = high

GPI 1 = highGPI 2 = high




Chapter 11: VTS-6801 Video Timing Switcher General Issues

General IssuesIf the VTS is used as a back-up switcher or as a clean-switch router, the External Analog Reference should be used as the board reference.

If the VTS is used as a back-up switcher, a certain amount of noise on the PGM inputs will be rejected. The PGM output will switch back and forth between the primary video input and the secondary video input, if the primary signal is intermittently noisy.

The VTS processes the video sync information on the PGM inputs to prevent the PGM outputs from failing under moderately noisy conditions.

If the PGM inputs contain illegal data during the active picture area, the VTS will legalize the video data.


Applications Chapter 11: VTS-6801 Video Timing Switcher

Applications

Clean-Switch SettingsThe following drawing shows the Clean-Switch settings:

Figure 11-6. 2-by-1 Clean-Switch

2- by -1 Clean-Switch Settings

Both PGM inputs and the External Reference should be set to the same standard. PGM IN #1 and PGM IN #2 should be within ± 1/2 line of the external reference.

Program In # 2

GPI # 1

GPI # 2Ref In

Program Out # 2

Program Out # 1Program In # 1

Switch Setting

Replace OFF

Insert Black OFF

GPI #1 Enable ON

GPI #2 Enable ON

GPI #1 Polarity HIGH or LOW

GPI #2 Polarity HIGH or LOW


Chapter 11: VTS-6801 Video Timing Switcher Applications

Digital Adjusted Line Delay

Figure 11-7. Digital Adjusted Line Delay

Program In # 1

Program In # 2

VariableDelay

# 1

VariableDelay

# 2

Program Out # 2

Program Out # 2

Ref In

Switch Setting

Replace OFF

Insert Black OFF

Use the horizontal delay control to delay the video relative to the external analog reference.


Applications Chapter 11: VTS-6801 Video Timing Switcher

Backup Video Switch

Figure 11-8. Backup of Video Switch

To replace the “Primary” input with the “Secondary” input, set the VTS as shown in the table below:

Program In # 1 “Primary”

Program Out# 2 “Secondary”

AutoChangeLogic

Ref In

Program Out # 1 “Primary”

Program In# 2 “Secondary”

Switch Setting

Replace ON

Insert Black OFF: to replace PGM with less noisy inputON: to replace PGM with black

Lock to External Analog Reference Mode 1 and Mode 2 LEDs are OFF.


Chapter 11: VTS-6801 Video Timing Switcher Applications


Appendix A

Embedding Modes GraphicDescription

OverviewThis chapter describes the Embedded modes listed below.:

• Left Mode Justify

• Follow Mode Part 1

• Follow Mode Part 2

• Overwrite Mode Part 1

• Overwrite Mode Part 2

• Strip ADS and Left Justify

• Strip ADS and Clean

6800/7000 Series -Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 191

Appendix A: Embedding Modes Graphic Description Left Mode Justify

Left Mode JustifyThis mode embeds audio after EAV. The audio is embedded as specified group number (EMBED_GROUP), and any existing auxiliary data packets (ADP) not using the ADS area used by the audio groups is kept (if an ADP is located just after the EAV, it is overwritten with the new embedded audio group).

Fragments may remain in the ADS if the audio group partially overwrites an existing ADP. This is not a problem for most De-Muxes, but may cause odd behavior in some equipment.

EMBED_GROUP will not be embedded and an error will be reported if the group specified already exists in the ADS.

Figure A-1. Left Justification Mode

EAV

EAV

EAV

ADS before embedding

ADS after embedding GROUP 1

GROUP 1


other auxilliary data A

EAV

ADS after embedding GROUP1remaining otherauxilliary data A

(garbage)GROUP 1

other auxilliary data B


EAV

EAV


ADS after attempting to embedding GROUP 1: ERROR is returned

Pre-existing GROUP 1



Follow Mode Part 1 Appendix A: Embedding Modes Graphic Description

Follow Mode Part 1Follow mode starts embedding after the last embedded audio group. The audio is embedded as the group specified (EMBED_GROUP). It will not destroy any ADPs already present in the ADS.

Existing packets in the ADS will be left justified.

If the pre-existing ADDs are not left justified (and do not follow each other within a 3 or 4 of clocks), the embedder will report an error and not embed.

Figure A-2. Follow Embedding Mode Part 1

EMBED_GROUP will not be embedded and an error will be reported if the group specified already exists in the ADS.

EAV

EAV

EAV



GROUP 1


other auxilliary dataA

EAV


EAV

EAV





other auxilliary dataB


other auxilliary dataB GROUP 1


Appendix A: Embedding Modes Graphic Description Follow Mode Part 2

Follow Mode Part 2The graphic below details the “Follow Embedding Mode Part 2”.

Figure A-3. Follow Embedding Mode Part 2

EAV

EAV

EAV



GROUP 1


EAV


EAV

EAV



other auxilliarydata

GROUP 1

GROUP 1

GROUP 2

GROUP 2

GROUP 2







Overwrite Mode Part 1 Appendix A: Embedding Modes Graphic Description

Overwrite Mode Part 1Overwrite specifies the groups you want overwritten, and which groups you want to embed audio data onto.

If the specified audio group to overwrite (OVERWRITE_GROUP) exists, the embedder will embed the group as EMBED_GROUP. EMBED_GROUP and OVERWRITE_GROUP do not need to have the same value.

If the specified overwrite group does not exist, the audio group is not embedded, and an error is reported.

Audio groups are embedded with the same sample distribution as the overwritten groups.

Figure A-4. Overwrite Embedding Mode Part 1

EAV

EAV

EAV


ADS after attempting to embed GROUP 1: returns ERROR



EAV

EAV

EAV


ADS after embedding GROUP 1 (with overwrite group specified as group 1)

GROUP 1





ADS after attempting to embed GROUP 1: returns ERROR


Appendix A: Embedding Modes Graphic Description Overwrite Mode Part 2

Overwrite Mode Part 2The graphic below details the “Overwrite Embedding mode Part 2”.

Figure A-5. Overwrite Embedding Mode Part 2

EAV

EAV

EAV


ADS after embedding GROUP 2 (with overwrite group specified as GROUP 1)


EAV

EAV

EAV



GROUP 1



Pre-existing GROUP 1 Pre-existing GROUP 2

Pre-existing GROUP 2GROUP 2

bad condition since there are now two group 2's in the ADS

Pre-existing GROUP 1 Pre-existing GROUP 2 Pre-existing GROUP 3

GROUP 4 Pre-existing GROUP 3Pre-existing GROUP 1


Strip ADS and Left Justify Appendix A: Embedding Modes Graphic Description

Strip ADS and Left JustifyThe entire ADS region is stripped clean, and the audio groups are embedded left justified. Nothing previously existing in the ADS is kept.

Figure A-6. Strip ADS and Left Justify

EAV

EAV

EAV





EAV



Group 1

GROUP 1

EAV



Group 1EAV

Pre-Existing GROUP 1


Appendix A: Embedding Modes Graphic Description Strip ADS and Clean

Strip ADS and CleanStrips the ADS region clean.

Figure A-7. Strip ADS and Clean

EAV

EAV

EAV


ADS after



EAV


ADS after

EAV


ADS after

EAV

Pre-Existing GROUP 1


Warranty

Leitch Incorporated ("Leitch") warrants to each original end-user purchaser or licensee (each, a "Customer") of hardware or software products manufactured by Leitch (each, a "Product"), or of non-warranty repair or other services provided by Leitch ("Services"), that each such Product and all such Services will be free from defects in materials and workmanship that adversely affect the Product's performance or the Services' intended purpose for a period (the "Warranty Period") of:

One year for server hardware Products;Two years for non-server, and Desktop hardware Products;Ninety days for parts, assemblies and supplies to support hardware Products previously sold to Customers;Ninety days for media of software licensed separately from Leitch hardware Products, and encoding created by Leitch as physically affixed on or embedded in such media; The same period as the hardware Product warranty for media of software licensed as an integral part of any Leitch hardware Product, and encoding created by Leitch as physically affixed on or embedded in such mediaNinety days for Services.

Please refer to the current "Leitch Limited Warranty Policy" for a complete description of the warranty provided, including important exclusions and limitations as well as procedures for obtaining warranty service.

Leitch 6800 Series

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