VS906 AA / VS906 DA / VS906 E1 - Nevion · 2020. 3. 4. · VS906-AA / VS906-DA / VS906-E1 Rev. D...

Nevion Nordre Kullerød 1 3241 Sandefjord Norway Tel: +47 33 48 99 99

nevion.com

VS906-AA / VS906-DA / VS906-E1

Multi-Channel Audio and Data Contribution Codec for IP/Ethernet Networks

User Manual

Document No. 22260-0906

Rev. D

VS906-AA / VS906-DA / VS906-E1 Rev. D

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Nevion Support

Nevion Europe

P.O. Box 1020 3204 Sandefjord, Norway

Support phone 1: +47 33 48 99 97 Support phone 2: +47 90 60 99 99

Nevion USA

1600 Emerson Avenue Oxnard, CA 93033, USA

Toll free North America: (866) 515-0811 Outside North America: +1 (805) 247-8560

E-mail: [email protected]

See http://www.nevion.com/support/ for service hours for customer support globally.

Revision history

Current revision of this document is the uppermost in the table below.

Rev. Repl. Date Sign Change description

D

Jul 9, 2015 SH Update with additional configuration and Fallback sections. Hardware/software license support. SFP descriptions. New EPP mode descriptions.

C Jan 30, 2015 MB Cover page update; no changes to content

B Jul 18, 2013 MF Remove references to T1 product

A Jan 4, 2013 SH New release following review by Engineering and Support teams

1 Jun 6, 2012 JC Initial release

mailto:[email protected]

http://www.nevion.com/support/


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Contents

Contents ................................................................................................................... 3

1 Product overview ................................................................................................... 7 1.1 Warnings, Cautions and Notes ...................................................................................... 7

2 Description ............................................................................................................ 8 2.1 Ordering Options ........................................................................................................... 9 2.1.1 Sales Products ........................................................................................................... 9 2.1.2 License Options - Hardware ......................................................................................10 2.1.3 License Options - Software .......................................................................................10

3 Applications ......................................................................................................... 12 3.1 Analog Audio Transport ................................................................................................13 3.2 Digital Audio Transport .................................................................................................13 3.3 E1 Data Transport ........................................................................................................14

4 Specifications ...................................................................................................... 15 4.1 Inputs and Outputs .......................................................................................................15 4.1.1 Digital Audio Inputs and Outputs ...............................................................................15 4.1.2 Analog Audio Inputs and Outputs ..............................................................................15 4.1.3 E1 Inputs and Outputs ...............................................................................................16 4.1.4 IP Interface ................................................................................................................16 4.1.5 Processing ................................................................................................................16 4.1.6 Audio Processing ......................................................................................................17 4.1.7 Relay Alarm Outputs .................................................................................................17 4.1.8 General .....................................................................................................................17 4.2 Audio/Data Bit Rates ....................................................................................................18 4.2.1 Audio Compression ...................................................................................................18 4.3 Latency ........................................................................................................................19

5 Configuration ....................................................................................................... 20 5.1 VS906 Main Configurations ..........................................................................................21 5.1.1 Boot Modes ...............................................................................................................21 5.1.2 Notes on Main Configuration .....................................................................................23 5.2 Input Channel Configuration .........................................................................................24 5.2.1 Notes On Input Channel Configuration ......................................................................28 5.2.2 Asymmetric Network Launch .....................................................................................29 5.3 Output Channel Configuration ......................................................................................30 5.3.1 Notes On Output Channel Configuration ...................................................................32 5.4 Alarm Settings ..............................................................................................................34 5.5 Alarm Configuration .....................................................................................................35 5.5.1 Alarm Settings ...........................................................................................................35 5.6 Alarm Priority Level Reset ............................................................................................37 5.7 Upload/Download Card Configuration Settings.............................................................38 5.7.1 Configuration Upload Procedure ...............................................................................38 5.7.2 Configuration Download Procedure ...........................................................................39

6 Installation ........................................................................................................... 40 6.1 Inspection .....................................................................................................................40 6.2 Handling .......................................................................................................................40 6.3 Grounding ....................................................................................................................40 6.4 Module Installation .......................................................................................................41 6.5 Installation Environment ...............................................................................................41

7 Connections ........................................................................................................ 43


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7.1 Front and Rear Panel Diagrams ...................................................................................43 7.2 Interface Cables ...........................................................................................................44 7.2.1 DB25M to 8 x BNC Cable ..........................................................................................44 7.2.2 DB25M to 8x XLRM (Male) ........................................................................................44 7.2.3 DB25M to 8x XLRF (Female) ....................................................................................45 7.2.4 Patch Panel 16-Port CAT5E/RJ48 .............................................................................45 7.2.5 Patch Panel 16-Port BNC ..........................................................................................46 7.3 Front Panel LED’s ........................................................................................................47 7.4 Rear Connector Panel Connectivity ..............................................................................49 7.5 SFP/SFP Options .........................................................................................................50 7.5.1 VS906-AA, VS906-DA and VS906-E1 – 1Gbps SFP modules ..................................50 7.6 Reference Clock ...........................................................................................................51 7.6.1 VS906-E1 Clock Reference .......................................................................................51 7.6.2 VS906-DA/-AA Output Sample Rate Converter (Clock Reference) ...........................52 7.6.3 VS906-DA Input Sample Rate Converter ..................................................................52 7.7 External Alarm Relay Output ........................................................................................53 7.8 Front Panel Maintenance Port ......................................................................................54 7.9 Audio Panel Monitor .....................................................................................................54 7.10 Switch Settings ...........................................................................................................55

8 Element Management ......................................................................................... 56

9 Card Status ......................................................................................................... 57 9.1 Status Summary ...........................................................................................................58 9.2 Input Status ..................................................................................................................60 9.2.1 VS906-E1 ..................................................................................................................60 9.2.2 VS906-DA .................................................................................................................61 9.2.3 VS906-AA .................................................................................................................62 9.3 Output Status ...............................................................................................................63 9.3.1 VS906-E1 ..................................................................................................................63 9.3.2 VS906-DA .................................................................................................................65 9.3.3 VS906-AA .................................................................................................................66 9.4 Audio Level Meters ......................................................................................................68 9.5 License Status..............................................................................................................69 9.6 Fallback Mode ..............................................................................................................71 9.7 Fallback Recovery ........................................................................................................72

10 Protection Features ........................................................................................... 73 10.1 Forward Error Correction (FEC) .................................................................................73 10.2 Streaming Intelligent Packet Switching (SIPS) ...........................................................73 10.3 Encoder Partner Protection (EPP) ..............................................................................75 10.3.1 EPP Configuration ...................................................................................................76 10.3.2 RTP Sync ................................................................................................................78 10.3.3 SSRC Blocking ........................................................................................................78 10.3.4 EPP Content Switching ...........................................................................................79 10.3.5 EPP Error Switching ................................................................................................79 10.4 Output with SIPS protection .......................................................................................80 10.5 Launch Delay Offset (LDO) ........................................................................................81

11 IP Specific Configuration ................................................................................... 82 11.1 VLAN Tagging ............................................................................................................82 11.2 TOS/DSCP Marking ...................................................................................................83 11.3 Network Jitter Tolerance ............................................................................................83 11.4 Transmit Block Size....................................................................................................84

12 Remote Upgrade Procedure .............................................................................. 85


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13 License File Installation ..................................................................................... 89

14 Maintenance and Storage ................................................................................. 91 14.1 Maintenance ..............................................................................................................91 14.2 Storage ......................................................................................................................91 14.3 Operational Safety .....................................................................................................91

Appendix A - Glossary ............................................................................................ 92

Table of Figures

Figure 1: VS906 Card Module ............................................................................................. 8 Figure 2: Block Diagram ...................................................................................................... 9 Figure 3: VS906 - Low Bitrate Multi-format Contribution Codec..........................................12 Figure 4: Multichannel audio or data transmit through IP Network ......................................12 Figure 5: Multiple Analog Audio Channels over Gigabit Ethernet Network .........................13 Figure 6: Multiple AES Audio Channels over Gigabit Ethernet Network .............................13 Figure 7: Multiple E1 Data Circuits over Gigabit Ethernet Network .....................................14 Figure 8: VS906 Control Settings .......................................................................................20 Figure 9: VS906 Edit Card Configuration – Main Configuration .........................................20 Figure 10: VS906 Card Functional Mode Configuration .....................................................21 Figure 11: VS906 Edit Card Configuration – Main Configuration ........................................22 Figure 12: VS906 Control Settings – Input Channel Configuration .....................................24 Figure 13: VS906 Control Settings – Output Channel Configuration ..................................30 Figure 14: VS906 Alarm Settings .......................................................................................35 Figure 15: Card Alarm Priority Level Reset ........................................................................37 Figure 16: Configuration Upload.........................................................................................38 Figure 17: Upload Configuration File Selection ..................................................................38 Figure 18: Upload Configuration Warning ..........................................................................39 Figure 19: Upload Configuration Succeeded ......................................................................39 Figure 20: Configuration Download ....................................................................................39 Figure 21: Front and Rear Panel Connectors .....................................................................43 Figure 22: DB25M to 8 x BNC Cable ..................................................................................44 Figure 23: DB25M to 8 x XLRM Cable ...............................................................................45 Figure 24: CAT5E/RJ48 patch panel ..................................................................................46 Figure 25: VS906 Front Panel LED Layout ........................................................................47 Figure 26: VS906-E1 Output Clock Configuration ..............................................................51 Figure 27: VS906-E1 Reference Clock Source Configuration ............................................51 Figure 28: VS906-DA/-AA Output SRC Configuration ........................................................52 Figure 29: VS906-DA Input SRC Configuration ..................................................................52 Figure 30: Front Panel Monitor Connector .........................................................................54 Figure 31: Element Management Web Interface ................................................................56 Figure 32: VS906 Card Status Menu ..................................................................................57 Figure 33: VS906 Card Status Summary ...........................................................................58 Figure 34: VS906-E1 Input Status ......................................................................................60 Figure 35: VS906-DA Input Status .....................................................................................61 Figure 36: VS906-AA Input Status .....................................................................................62 Figure 37: VS906-E1 Output Status ...................................................................................63 Figure 38: VS906-DA Output Status ..................................................................................65 Figure 39: VS906-AA Output Status ...................................................................................66 Figure 40: VS906 Audio Level Meters ................................................................................68 Figure 41 Card License Detail Menu ..................................................................................69 Figure 42: Card License Error ............................................................................................70 Figure 43: Channel License Allocation ...............................................................................70 Figure 44: VS906-Fallback mode .......................................................................................71


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Figure 45: VS906-FB Control Settings ...............................................................................71 Figure 46: VS906-FB Card Status Summary ......................................................................72 Figure 47: FEC Configuration .............................................................................................73 Figure 48: VS906 Diverse Path Transmission ....................................................................73 Figure 49: VS906 Receive SIPS Protection .......................................................................74 Figure 50: VS906 Receive SIPS Protection Input Config....................................................75 Figure 51: VS906 Encoder Partner Protection ....................................................................76 Figure 52: VS906 Partner Protection Master Config ...........................................................77 Figure 53: VS906 Partner Protection Slave Config .............................................................77 Figure 54: VS906 Output SIPS Protection Config ..............................................................80 Figure 55: VS906 Diverse Path Transmission with Perfect Packet Switching .....................80 Figure 56: VS906 Encoder Partner Protection with perfect packet switching ......................80 Figure 57: VS906 Flow B Launch Delay Configuration .......................................................81 Figure 58: VS906 VLAN Tagging of IP packets ..................................................................82 Figure 59: VS906 VLAN Un-tagging of IP packets .............................................................82 Figure 60: TOS/DSCP Fields .............................................................................................83 Figure 61: VS906 TOS/DSCP Settings ..............................................................................83 Figure 62: Network Jitter Tolerance ...................................................................................83 Figure 63: VS906 Transmit Block Size ...............................................................................84

Table of Tables

Table 1: VS906 Hardware Options .....................................................................................10 Table 2: VS906 Software License Options .........................................................................11 Table 3: Typical VS906 Bit Rates .......................................................................................18 Table 4: Typical VS906 Bit Rates with Compression Option ..............................................18 Table 5: VS906 Card Functional Modes .............................................................................21 Table 6: VS906 Control Settings – Main Configuration .......................................................23 Table 7: VS906 Control Settings – Input Channel Configuration ........................................27 Table 8: VS906 Control Settings – Output Channel Configuration ......................................32 Table 9: VS906 Alarm Settings ..........................................................................................37 Table 10: VS906 Description of Front Panel LED's ............................................................48 Table 11: VS906 Rear Connector Panel Labels and Descriptions ......................................49 Table 12: Audio/Data Connector pin outs ...........................................................................50 Table 13: Recommended SFP Modules for 1Gbps interfaces ............................................50 Table 14: Pin-out for the External Alarm Relay Output .......................................................53 Table 15: Front Monitor Port Channel Selection .................................................................54 Table 16: Pin Out of Front Panel Monitor Connector ..........................................................54 Table 17: S1 Switch Functions ...........................................................................................55


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1 Product overview

This manual is written for users of the Nevion VS906 Audio/Data codec. It provides the necessary information for installation, configuration and operation of the product. The manual covers the following topics:

• Technical Specification

• Installation

• Web interface description inc. configuration

• Maintenance

• Alarm listings The VS906 product range covers several different versions, however much of the configuration and usage is common and is therefore not repeated in this manual for every version. Where information/configuration is unique to a specific version it is marked.

1.1 Warnings, Cautions and Notes The following warnings, cautions and notes are used and highlighted in this manual as shown below:

Warning: This is a warning. Warnings give information, which if strictly observed, will prevent personal injury and death, or damage to personal

property or the environment.

Caution: This is a caution. Cautions give information, which if strictly followed, will prevent damage to equipment or other goods.

Note: Notes provide supplementary information. They are highlighted for emphasis, as in this example, and are placed immediately after the relevant

text.


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2 Description

The VS906 is a modular multi-format, multi-channel family of audio and data contribution codecs for IP/Ethernet networks. The audio models of VS906 provide linear encapsulation of uncompressed analog and AES audio, and will also provide compression capability through APT-X for bandwidth efficiency. The data models of VS906 support transparent carriage of E1 circuits via standards based circuit emulation over IP/Ethernet. The E1 transport solution provides a full unframed E1 transport over IP. The VS906 has two network facing interfaces. The flows from these interfaces are -bidirectional and capable of being unicast or multicast, providing the capability for point-to-point or point-to-multipoint transport through the network. VS906 supports SMPTE 2022-1 standard based Forward Error Correction for protection against packet loss created by occasional network errors. VS906 also supports Streaming Intelligent Packet Switching (SIPS) providing perfect protection switching using dual network feeds. Using the VS906, users can deploy multiple audio and data circuits in point to point local loop applications or over long-distance packetized networks. This flexible platform enables highly cost efficient audio and data transport and with companion video transport cards, provides a comprehensive media delivery platform for virtually any environment including long distance, metro area and campus networks. This user manual covers the following models:

1. VS906-AA – Bidirectional Linear encapsulation/de-encapsulation of up to 8 mono channels (or 4 analog audio stereo pairs)

2. VS906-DA –Bidirectional Linear encapsulation/de-encapsulation of up to 8 AES streams

3. VS906-E1 –Bidirectional Linear encapsulation/de-encapsulation of up to 8 E1 circuits

Figure 1: VS906 Card Module


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Figure 2: Block Diagram

2.1 Ordering Options

2.1.1 Sales Products The VS906 product is specified by six hardware platforms:

VS906-HW-AA-600+ VS906-HW-AA-HiZ+

VS906-HW-DA-110+ VS906-HW-DA-75+

VS906-HW-E1-120+ VS906-HW-E1-75+

VS906 functionality and the number of supported channels are specified by individual software license options. The functionality on a card is enabled by loading a valid license file to the card. This process is described in the License File Installation section of this manual.

The hardware and software options are listed in the tables below.

The previous sales products, listed below, are discontinued and are replaced by the hardware/software license options listed in the tables on the following pages.

Discontinued products:

VS906-xAA-HiZ and VS906-xAA-HiZ-E

VS906-xAA-600 and VS906-xAA-600-E

VS906-xDA-110 and VS906-xDA-110-E

VS906-xDA-75 and VS906-xDA-75

VS906-xE1-75

VS906-xE1-120


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2.1.2 License Options - Hardware

Product Name Description

VS906-HW-AA-600+

Multi-channel analog audio transport over IP/GigE, EBU-TECH 3326 encapsulation. Can be licensed for up to 8 bidirectional analog mono channels.

Backplane with 600 Ohm impedance input and output DB25 connectors, and 2 SFP cages. SFP's not included..

VS906-HW-HiZ+

Multi-channel analog audio transport over IP/GigE, EBU-TECH 3326 encapsulation. Can be licensed for up to 8 bidirectional analog mono channels.

Backplane with high impedance input, low impedance output DB25 connectors, and 2 SFP cages. SFP's not included.

VS906-HW-DA-110+

Multi-channel digital audio transport over IP/GigE, EBU-TECH 3326 encapsulation. Can be licensed for up to 8 bidirectional AES streams.

Backplane with 110 Ohm balanced interfaces (2x DB25), and 2 SFP cages. SFP's not included.

VS906-HW-DA-75+

Multi-channel digital audio transport over IP/GigE, EBU-TECH 3326 encapsulation. Can be licensed for up to 8 bidirectional AES streams.

Backplane with 75 Ohm unbalanced interfaces (2x DB25), and 2 SFP cages. SFP's not included.

VS906-HW-E1-120+

Multi-channel E1 data transport over IP/GigE. Basic hardware that can be licensed for up to 8 bidirectional E1 data circuits.

Backplane with 120 Ohm interfaces (2x DB25), and 2 SFP cages. SFP's not included.

VS906-HW-E1-75+

Multi-channel E1 data transport over IP/GigE. Basic hardware that can be licensed for up to 8 bidirectional E1 data circuits.

Backplane with 75 Ohm unbalanced interfaces (2x DB25), and 2 SFP cages. SFP's not included.

Table 1: VS906 Hardware Options

2.1.3 License Options - Software


VS906-SW-CHx-BI

Software option for VS906-DA/E1 enabling x bidirectional channel (provides x transmit and x receive - maximum is 8).

x = 1, 2, 4, 6 or 8 channels

VS906-SW-EAPTX Software option for VS906-AA/DA enabling Enhanced apt-X audio compression (ultra low latency fixed 4:1 high quality compression, 48kHz 24-bit processing).

VS906-SW-FEC Software option for VS906 enabling Forward Error Correction for IP input/output.


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VS906-SW-LDO Software option for VS906 enabling Launch Delay Offset (LDO) for adding latency to one of two redundant IP streams transmitted by a sender device.

VS906-SW-SIPS Software option for VS906 enabling SIPS protection and RTP seamless switching according to SMPTE 2022-7. This license is required only on receiver devices.

VS906-SW-EPP Software option for VS906 enabling Encoder Partner Protection (EPP) for 1+1 sender redundancy.

Table 2: VS906 Software License Options


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3 Applications

The VS906 is a highly flexible, future-proof hardware platform that is part of a family of products designed to map and transport any professional audio broadcast standard over any Telco/IP network that has been configured and deployed for this purpose. A variety of audio format transport can be achieved through purchase options. These purchase options specify the correct interface hardware. In all cases the main hardware component remains the same.

Figure 3: VS906 - Low Bitrate Multi-format Contribution Codec

The diagram below illustrates an application where the VS906 can be used to transport multichannel audio or data over an IP/Ethernet network with the option to compress and decompress.

Figure 4: Multichannel audio or data transmit through IP Network


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3.1 Analog Audio Transport The VS906 in Analog audio transport mode (AA mode) is designed for applications that require transporting multiple bidirectional mono audio signals over IP networks.

Figure 5: Multiple Analog Audio Channels over Gigabit Ethernet Network

The VS906-AA is capable of transporting up to eight bidirectional analog audio signals simultaneously. These eight channels can be configured as eight individual mono channels or as 4 stereo pairs. In the latter case channels are combined in pairs i.e. Input 1 and Input 2 form the first stereo pair. Each VS906-AA can be specified at purchase with either Hi-Z or 600 ohm interface impedance options. The purchased option applies to all channels.

3.2 Digital Audio Transport The VS906 in Digital audio transport mode (DA mode) is designed for applications that require transporting multiple bidirectional AES audio signals over IP networks.

Figure 6: Multiple AES Audio Channels over Gigabit Ethernet Network

The VS906-DA is capable of transporting up to eight bidirectional digital AES audio signals simultaneously. The card can be configured to transport any of these connected AES inputs as a mono audio signal by carrying the left audio channel only.


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The card can receive and output either an AES stream or a Mono signal derived from an AES, as above, from a VS906-DA input. In this case the receiving channel will automatically detect whether the signal is AES or Mono. The card can also receive a mono signal from a VS906-AA input source. In all cases there will be a combined (AES and Mono) total maximum of eight input and eight output signals. Each VS906-DA can be specified at purchase with either 110 or 75 ohm interface impedance options for twisted pair balanced and coaxial unbalanced signals. The purchased option applies to all channels. Options are available for either Input or Outputs sample rate convertors. This provides the ability to lock audio inputs to, or outputs from, the card to an external reference clock signal. If this external reference clock is not used, the card uses internal adaptive clock recovery to generate an internal synthesized clock for audio data output. See section VS906-DA and VS906-AA Clock Reference for more detail.

3.3 E1 Data Transport

The VS906 in E1 data transport mode (E1 mode) is designed for applications that require transporting multiple E1 data circuits over IP networks.

Figure 7: Multiple E1 Data Circuits over Gigabit Ethernet Network

The VS906-E1 is capable of transporting up to eight bidirectional E1 data circuits simultaneously. Each VS906-E1 card can be specified at purchase with either 75 or 120 ohm impedance options for use with BNC coaxial or RJ48 symmetrical pair interfaces. These options apply to all channels. All three card variants present inputs and outputs on two DB25 connectors. Inputs on one connector and outputs on the other. A range of break out cables to appropriate connectors or patch panels are available to order. See Interface Cables


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4 Specifications

4.1 Inputs and Outputs

4.1.1 Digital Audio Inputs and Outputs

Standards SMPTE 299M

AES-3 (balanced and unbalanced)

AES unbalanced (SMPTE-276M)

AES balanced (AES3-1992)

Dolby-E

Number of ports 8 x input, 8 x output

Connector type 2 x 25pin DB-25, with breakout cable options to 16 XLR (110 Ohm balanced) or 16 BNC (75 Ohm unbalanced)

Sampling rate 48kHz (with option for sample rate conversion of 32kHz and 44.1kHz input)

Level 1Vp-p +/- 10%

4.1.2 Analog Audio Inputs and Outputs

Standards RS250C short hauls specifications

Number of ports 8 x mono input, 8 x mono output (4 x stereo input, 4 x stereo output)

Connector type 2 x 25pin DB-25, Hi-Z/600 Ohm I/P or Lo-Z/600 Ohm O/P, balanced with breakout cable option to 16 XLR

Sampling rate 48kHz (with 32kHz option)

Quantization 24bit

SNR unweighted >90dB (20Hz to 20kHz)

Frequency response +/-0.5dB (20Hz to 20kHz)

THD <0.1% (20Hz to 20kHz, at -6dBFS)

IMD <0.05% SMPTE at +2dBu

Crosstalk between channels >65dB

Input/output level 0dBFS = +18dBu (Hi-Z/Lo-Z)

0dBFS = +18dBm (600/600 Ohm)


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4.1.3 E1 Inputs and Outputs

Standard E1, (ITU-T G.703)

Number of ports 8 x input, 8 x output

Connector type 2 x 25pin DB-25 with breakout panel or cable options to 16 x BNC (75 Ohm) or RJ48 (120 Ohm), 8 x Tx and 8 x Rx

Data Rate 2.048Mbps

Encoding HDB3

Framing Unframed or framed

4.1.4 IP Interface

Number of ports 2 x Network interface ports 1 x Auxiliary data interface (Future use) 1 x Maintenance port

Connector type 2 x 1Gbps SFP (optical or CU) network interfaces

1 x RJ45 aux port (Future use)

1 x RJ45 (front panel maintenance port)

Interface type Gigabit Ethernet (GbE): IEEE 802.3ab (electrical) or IEEE 802.3z (optical)

Fast Ethernet (FE): IEEE 802.3U, IEEE 802.3y

Protocols IP/UDP/RTP, ARP, IGMPv2/v3, Diffserv/TOS,

802.1p (PCP), 802.1Q (VLAN)

Link speed 100Mbps/1000Mbps autosensing

Input impedance 100 Ohm - Cat 5e Cable

Max. Cable distance 100m CAT5e STP data cable

4.1.5 Processing

Audio Encapsulation Based EBU – TECH 3326, 24-bit Samples

Data Encapsulation IETF RFC4553

Forward Error Correction (FEC) Non-block aligned XOR FEC similar to SMPTE-2022-1 with max 8 columns and 20 rows

Latency (exc. network delay) 6ms minimum (1ms block size)

18ms minimum (4ms block size)

Streaming Intelligent Packet Switching (SIPS)

Dual stream protection switching buffers up to 1000msecs of differential delay (200ms in auto mode)

Test Patterns 1kHz audio test tone


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4.1.6 Audio Processing

Compression EAPT – x

Sampling rate 32, 48kHz

Word depth 16, 24bit

Bit rate 128 to 3072Kbps

4.1.7 Relay Alarm Outputs

Major Alarm Isolated relay contact normally open, closed on activation of the alarm

4.1.8 General

Operating temperature 0 to 40°C ambient.

Voltage +12V, +5V

Power Consumption 25 Watts max

Compliance NEBS level 3, UL, CSA, CE, FCC(Part 15, Class A), C-TICK, RoHS

Mechanical: Suitable for mounting in Ventura 19" rack chassis

Size 6 HP x 3U Extended Eurocard (220 mm x 100 mm)

Weight With rear assembly 350g

Boot time: Approx 5 seconds

Standard accessories: Rear connector panel (supplied with module)


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4.2 Audio/Data Bit Rates The following table gives an indication of the bit rates for the VS906 in both E1 and DA modes. Bit rates are shown for both the data rate and the Ethernet rate (inc IP headers etc.), no FEC.

VS906 Card Mode

Packet Period in ms

Compression Ratio

Resolution bits/sample

No. of Channels (stereo/ mono)

Uncompressed Data Rate

kbps

Ethernet Data Rate kbps

E1 4 n/a n/a n/a 2048 2164

E1 1 n/a n/a n/a 2048 2512

linear PCM 4 1 24 2 2304 2420

linear PCM 1 1 24 2 2304 2768

linear PCM 4 1 24 1 1152 1268

linear PCM 1 1 24 1 1152 1616

Table 3: Typical VS906 Bit Rates

VS906 Card Mode

Packet Period in ms

Compression Ratio

Resolution bits/sample

No. of Channels (stereo/ mono)

Uncompressed Data Rate

kbps

Ethernet Data Rate kbps

EAPT-X 4 4 24 2 2304 692

EAPT-X 1 4 24 2 2304 1040

EAPT-X 4 4 24 1 1152 404

EAPT-X 1 4 24 1 1152 752

Table 4: Typical VS906 Bit Rates with Compression Option

4.2.1 Audio Compression To maximise the efficient use of available bandwidth, an audio compression software license option is available for both the VS906-DA and VS906-AA products. This compression is implemented using E-aptx technology. Enhanced aptX (E-aptX) provides high quality coding for professional audio broadcast applications and from Table 3 above it can be seen that a compression ratio of 4:1 can be achieved. E-aptX compression adds approximately 2.5ms to the overall end to end latency of the system.

Note: Audio compression is enabled with license option VS906-SW-EAPTX


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4.3 Latency Standard end to end latency for the VS906 audio/data codec is as follows:

1 ms TX Block size, 1ms Jitter Tolerance, SIPS disabled, no compression: 6 ms

4 ms TX Block size, 1ms Jitter Tolerance, SIPS disabled, no compression: 18 ms These measurements are based on a back to back IP connection between the Encoder input (Tx) and Decoder output (Rx) card modules. Enabling SIPS (SMPTE 2022-7 Seamless IP switching) increases the delay according to buffer size configured (1-200 ms). Enabling Forward Error Correction (FEC) and/or Network Jitter Tolerance will also increase the latency according to the configured FEC matrix or Jitter Buffer size. Enabling the E-aptX compression option will add approximately a further 2.5 ms to the system.


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5 Configuration

All of the configuration parameters for the VS906 cards can be set by using Nevion Element Management web interface. Select the VS906 to be configured by clicking on the front panel displayed in the web browser, then click on EDIT CONFIG. See Figure below.

Figure 8: VS906 Control Settings

Card configuration is performed using the Edit Card Configuration menu option under the EDIT CONFIG tab on the web interface for the card. Configuration is tab structured as seen in the Figure below.

Figure 9: VS906 Edit Card Configuration – Main Configuration

Most Main, Input and Output configurations parameters are common across all versions of the VS906 product line. Configurations items that are specific to individual models are specifically marked in italics in the tables below.

Caution: All configuration changes require the Save Changes button to be pressed before they are applied.

The Main tab contains the general card configuration parameters which are not specific to any input or output.


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5.1 VS906 Main Configurations

5.1.1 Boot Modes The operating mode of the VS906 card can be changed by using the Card Functional Mode configuration item in the Main tab. This item consists of a drop down list of the boot images installed on the card. The available boot images will depend on which product/licenses have been purchased.

Figure 10: VS906 Card Functional Mode Configuration

The VS906 card is capable of storing up to seven functional boot images plus one image location which is reserved for Fallback (see Section 9.6). Each image locations has been defined for a specific card function, see table below.

Image Location

Card Function Label

1 VS906 Main Functional Image E1/AA/DA

2 Optional Functional Image

i.e. VS906-DA Input Sample Rate Converter DA only

3 Reserved TBD

4 Reserved TBD

5 Reserved TBD

6 Reserved TBD

7 Reserved TBD

8 Fallback code FB

Table 5: VS906 Card Functional Modes

Caution: A configuration change to the Card Functional Mode item will cause the card to reboot and a loss of any active services


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Figure 11: VS906 Edit Card Configuration – Main Configuration

The control parameters of the VS906 main configurations are listed in the following Table.

Parameter Description Choice

Card Function Mode Selects the software image that the card is running.

E.g.: E1 v2.1

Maintenance IP Address

Defines the address of the card maintenance Ethernet port. Must be assigned the same IP subnet as the AEMS installed in the chassis the card is installed in.

The maintenance Ethernet port can be used for the remote upgrade of the card’s code images.

xxx.xxx.xxx.xxx

Network Interface Mode

Defines the Ethernet connection speed and duplex mode of the card’s Network Port A and B interfaces.

The setting for each port should match the configuration for the port or device to which it is physically connected.

The default setting for this parameter is Autonegotiate All Speeds.

Autonegotiate All Speeds / Autonegotiate 1G Only / Autonegotiate 100M Only / Fixed 1G Full Duplex / Fixed 100M Full Duplex

Network Output Mode

Defines if the card is running as Stand Alone or as a part of an encoder partner protection pair. The options are Stand Alone, Master or Slave.

The Master or Slave options are used in partner protection setup, when two encoder cards are fed with the same incoming feeds and the second physical network port of the first (master) card is cross-connected with the first physical port of the second (slave) card. The first physical network port of the master card and the second physical port of the slave card are connected to the network.

Stand Alone

Master

Slave


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IGMP Version Support

Defines whether the card will use IGMP v3 if it gets v3 requests. In automatic mode, the card will respond V3 to V3 devices but will revert to V2 if no V3 detected

Automatic

Force V2

Disabled

Reference Clock Input

(E1 only)

Selects the source of the output reference clock signal.

Enabled by selecting Output Clock to Ref. Clock Input in each Out X configuration tab.

BNC Ref. Clock Input

Input 1

Audio Silence Threshold

(DA/AA only)

Selects audio level at which the Audio Silence Alarm will be activated for each Input.

-60 to 0 dBFS

Partner Feed Timeout (ms)

Defines the timeout for partner feed loss (delay before EPP switches to local feed)

2 to 30 ms

EPP Content Switch Hysteresis (s)

(DA/AA only)

Delay time before switching EPP source based on audio content.

Content switching must be enabled on the input configuration pages for this to take effect.

2 to 30 seconds

Table 6: VS906 Control Settings – Main Configuration

Caution: A configuration change to the Card Functional Mode item will cause the card to reboot and a loss of any active services

5.1.2 Notes on Main Configuration Appropriate channel licenses are required for each functional mode to operate. Without channel licenses all channel transmission will be disabled. Each channel license installed enables one bidirectional channel transport. The Partner Feed Timeout can be increased if network jitter is expected on the cross-strap connection. Increasing this will prevent partner flows going into loss due to jitter or short burst losses. In order to prevent the partner flow going into loss due to a single lost packet, the card will never switch on less than twice the packet interval. EPP Content Switching is described in section 10.3.4.


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5.2 Input Channel Configuration

The control parameters of the VS906 input channel configuration are listed in the table below. They define the parameters that need to be configured for each input channel to the card. The control parameters for each input are located in the tabs In 1 to In 8. Most control parameters are common to the VS906-E1, VS906-DA and VS906-AA designs. Any variations are marked in italics below.

Figure 12: VS906 Control Settings – Input Channel Configuration


Channel Transmission Enable or disable this input channel Enabled or Disabled

Input Sample Rate

(DA Input Sample Rate mode only)

Selects the frequency rate for sampling of the Input audio signal.

In Bypass mode the input audio is not resampled.

Setting 32kHz or 48kHz resamples the input audio at the appropriate frequency.

Bypass

32kHz

48kHz


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Channel Mode

(DA/AA only)

Defines whether the incoming audio channel is transported as mono or stereo signal.

The VS906-DA transports an AES as stereo if configured as Stereo. If configured as Mono it transports the left channel of the AES only. It is also possible select a mono input derived from (L+R)/2.

The VS906-AA transports each analog input as mono if configured as Mono. If the odd numbered input is configured as Stereo it transports adjacent inputs e.g. Ch1 and Ch2 as a stereo pair using the configuration parameters from Ch1.

Mono,

Stereo or

Mono (L+R/2)

Compression

(DA/AA only)

Defines whether an incoming audio channel will be compressed before transport.

The uncompressed option transports linear audio.

The E-aptX 24bit 48kHz option applies apt-X compression to the audio signal before transport.

Uncompressed or E-aptX 24bit 48kHz

E1 Frame Alignment

(E1 only)

Enables Basic E1 Frame Alignment.

The frame alignment words will be aligned in the IP packets to prevent framing loss when switching between Encoder Master and Encoder Slave.

Enabled or Disabled

Protection

Defines whether this input channel is running with SIPS (Streaming Intelligent Packet Switching) protection.

Setting this option to Disable stops video traffic being sent from Network Port 2 (Flow B).

Enabled or Disabled

Partner Encoder Mode

In active mode, the slave card will output a feed all the time.

In passive mode, it will only output a feed upon failure of the master card

Active

Passive

Test Tone

(DA/AA only)

Enable or disable the internal audio test tone signal.

The internal test tone is a fixed -20dBm tone.

Enable or Disable

Flow A/B VLAN Enable or disable adding a VLAN tag to IP packets

Enable or Disable

Flow A/B VLAN ID The VLAN address to be used (if enabled in line above)

0 to 4095


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Flow A/B Port IP Address

The source IP address of the flow which will appear in the IP header of the outgoing flow. (This is also the address that will respond to ARPs and pings for the configured VLAN).

It is recommended that all ports in the same VLAN (or with no VLAN) have a common port IP address

xxx.xxx.xxx.xxx

Flow A/B Port Subnet Mask

Used to determine whether unicast destinations are local or remote (through Gateway)

xxx.xxx.xxx.xxx

Flow A/B Port Default Gateway

Enter IP address of system gateway. xxx.xxx.xxx.xxx

Flow A/B Destination IP Address

Defines destination IP address.

This IP address should be the same as the output channel Destination IP Address

xxx.xxx.xxx.xxx

Flow A/B Destination UDP Port

Defines destination UDP port of ingress IP packets the channel is configured to receive.

0 to 65535

Flow B Launch Delay (ms)

Defines the amount of delay applied to Flow B before it is transmitted. This can be used to create or reduce a differential Delay between flow A and flow B

0 to 200ms

Time To Live

Defines packet lifetime (hops) through network. The number of routers the packet can pass through before being discarded. As specified by RFC-791.

This value is decreased by 1 for every router the packet passes through. The packet is discarded when this value reaches 0.

0 restricts it to the same host, 1 to the same subnet, 32 to the same site, 64 to the same region and 128 to the same continent; 255 is unrestricted

0 to 255

TOS/DSCP + ECN

Defines IP packet priority from pre-configured options or a custom pattern. The predefined options configure both the TOS/DSCP and ECN fields using the 8 bit format below. See TOS/DSCP Marking

0 3 64 521 7

TOS or DSCP bits ECN or CU bits

CS0 00000000

CS1 00100000

CS2 01000000

CS3 01100000

…

Custom


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TOS/DSCP Custom + ECN

The card can mark the TOS/DSCP field in the IP header of each locally generated video over IP packet using a user-defined value. Although the DSCP field is only 6-bits long per IETF RFC2474, the browser shows the 6-bit DSCP plus the 2-bit ECN (or CU) fields. All of the 8 bits can be defined by the user.

This configuration is used in conjunction with selecting ‘Custom’ in the TOS/DSCP + ECN field above.

Custom input

VLAN Priority Code Point

Define frame priority level. Used in conjunction with VLAN ID when VLAN is enabled.

Values are from 0 (lowest) to 7 (highest).

0 (000)

1 (001)

2 (010)

3 (011)

4 (100)

5 (101)

6 (110)

7 (111)

Transmit Block Size (ms)

Defines the options of 4ms or 1ms packet sizes for latency control. Select between 4ms packets for greater transport efficiency or 1ms packets for lower latency

1 or 4

Forward Error Correction

Defines the number of FEC streams.

Column Only FEC uses one FEC stream. Rows and Columns FEC uses two FEC steams.

Disabled

Column Only

Rows and Columns

FEC Matrix Number of Rows (D)

Rows and Columns FEC can use any D value within the range from 4 to 20.

Note that L×D must be less than or equal to 100.

4 to 20

FEC Matrix Number of Columns (L)

Columns Only FEC can use any L value within the range from 1 to 8.

Rows and Columns FEC can only be used when L is greater than or equal to 4.

Note that L×D must be less than or equal to 100.

1 to 8

Audio Silence Detection Period (s) (DA/AA only)

Audio Channel Silent Alarm will be raised if the configured Audio Silence period is exceeded.

0 to 1000 seconds

EPP Content Switching

(DA/AA only)

Enables EPP switching based on differential audio silence. See section 10.3.4 for more information.

Enable or Disable

Table 7: VS906 Control Settings – Input Channel Configuration


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Note: Setting the Protection configuration item to Disabled, results in a network data flow being sent from network interface 1 (Flow A) only.

5.2.1 Notes On Input Channel Configuration Flow A / Flow B naming convention refers to the streams coming from Network Ports 1 / 2. Flow A streams always use Network Port 1, and Flow B streams always use Network Port 2. It is possible to disable video traffic being sent from both Network ports using the Channel Transmission and Protection configuration items. Setting Protection to Disabled stops video traffic from being sent from Network Port 2 (Flow B). Setting Channel Transmission to Disabled stops video traffic from being sent from both Network Port 1 (Flow A) and Network Port 2 (Flow B). The Flow x Port IP Address parameter for each port is used as the Source IP address for input channels. This IP Address will also respond to ARPs and Pings, the first of these being needed for Unicast operation to work, and the latter of these being useful for diagnostic purposes. For a simple network setup where all the channels are either not VLANed, or are all in the same VLAN, then it is simplest to set the Flow x Port IP Address of all input channels to the same value, which becomes a nominal “card IP address”. Being able to have a different IP address on each port can become a requirement in a VLANed environment. For example, if you were providing a service for TV Channel A on channel 1 of the VS906 and for TV Channel B on channel 3, separated into different VLANs that ran across different infrastructure, you would need to have an IP address appropriate to the TV Channel A network on channel 1 and one appropriate to the TV Channel B network on channel 3. If you are using the simple setup where the Flow A/B Port IP Addresses are all set the same, then the Flow x Port Subnet Mask and Flow x Port Default Gateway for the inputs also all become the same. If you were using a more complex network setup, then the Subnet Mask and Gateway for the ports in different VLANs may become different. The Flow x Destination IP Address and Flow x Destination UDP Port parameters define the destination of the video traffic. Two flows generated by the two different inputs need to be differentiated in some way – this can either be by having a different Destination IP Address for each one, or (if the Destination IP Address is the same) just by having a different Destination UDP Port number for each one. The Transmit Block Size parameter allows selection of either a 4ms or 1ms packet size. The 4ms packet size results in greater transport efficiency whilst the 1ms packet size gives a lower latency (but higher data rate compared to the 4ms setting) where minimal end to end latency is critical. The 4ms mode complies with the EBU-TECH 3326 standard. See also Transmit Block Size EPP Content Switching is described in section 10.3.4.


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5.2.2 Asymmetric Network Launch The default behaviour of the VS906 is to launch the same network data traffic for each video input on both network ports when the Protection configuration parameter is set to Enable. It is possible to define whether traffic associated with each video channel is launched from only Network Port A or only Network Port B. For each input channel, configuration parameters as follows: To launch from Network Port A only

1. Set Channel Transmission = Enabled 2. Set Flow A destination IP Address to required destination IP address 3. Set Protection = Disabled

To launch from Network Port B only

1. Set Channel Transmission = Enabled 2. Set Flow A destination IP Address = 0.0.0.0 3. Set Protection = Enabled 4. Set Flow B destination IP Address to required destination IP address

To launch from both Network Port A and Network Port B

1. Set Channel Transmission = Enabled 2. Set Flow A destination IP Address to required destination IP address 3. Set Protection = Enabled 4. Set Flow B destination IP Address to required destination IP address

To launch from neither Network Port

1. Set Channel Transmission = Disabled


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5.3 Output Channel Configuration The control parameters of the VS906 output channel configuration are listed in the table below. They define the parameters that need to be configured for each output channel from the card. The control parameters for each output channel are located in the tabs Out 1 to Out 8.

Figure 13: VS906 Control Settings – Output Channel Configuration


Channel Output Enables or disables the channel output Enabled or Disabled

Output Clock (E1 only)

Recover Clock from received Flow (Adaptive) or use External Reference clock.

See section VS906-E1 Clock Reference

Adaptive Clock Recovery or

Ref. Clock Input

Sample Rate Converter (DA Output Sample Rate mode / AA only)

Enables use of the external clock reference for each output channel.

Set to Disable to use internal Adaptive clock recovery.

See section VS906-DA and VS906-AA Clock Reference

Enabled or Disabled


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Channel Mode (AA only)

Enable audio output as stereo pair by configuring odd numbered output channels e.g. Ch1, Ch3, Ch5 or Ch7 as Stereo. If the odd numbered channel is configured as Stereo the adjacent channel (Ch2, Ch4, Ch6 or Ch8) will form the stereo pair.

Mono or Stereo

SIPS Protection

Defines whether the output is using SIPS protection and receiving video traffic from both Flow A and Flow B in order to decode the output stream.

Masks Flow B alarms/LEDs if disabled.

Enabled or Disabled

Expected Lagging Flow

Allows configuration of an expected lagging flow to prevent the SIPS buffer from adding extra latency to the lagging flow. In Auto mode the Flow which gets detected first will be buffered (delayed by SIPS buffer setting) to allow SIPS to align the flows.

Auto, Flow A or Flow B

Flow A/B VLAN Enable or disable the incoming VLAN tag on IP packets

Enabled or Disabled

Flow A/B VLAN ID The VLAN ID to be used (if enabled in line above)

0 to 4094

Flow A/B Port IP Address

Used for Unicast ARP & PING responses and source address for IGMP packets.

xxx.xxx.xxx.xxx

Flow A/B Source IP Address

Use for stream source filtering and IGMP v3 SSM

xxx.xxx.xxx.xxx

Flow A/B Source IP Mask

Used in conjunction with the above to allow a range of source addresses to be used

xxx.xxx.xxx.xxx

Flow A/B Destination IP Address

Defines destination IP address to match the IP address in the received packets. This IP address should be the same as the input channel Destination IP Address.

This IP address will be the same as the output channel Port IP address for Unicast addressing and will be different for Multicast addressing.

xxx.xxx.xxx.xxx

Flow A/B Destination UDP Port

Defines destination UDP port of ingress IP packets the channel is configured to receive

0 to 65535

SIPS Pre-buffer (ms)

This should be configured to allow for the maximum differential network delay expected.

The Dif. Delay (ms) figure is found under Output Status Ch 1-8.

The allocated pre-buffer time to allow for shortest-path-connected-first scenario

1 to 200ms

Network Jitter Tolerance (ms)

Set Network Jitter Tolerance between 0 – 200ms

1 to 200


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PDV Error Threshold (ms)

If the PDV (Packet Delay Variation) value for Flow A or Flow B is equal or larger than the configured PDV threshold the PDV Error will be raised

0 to 1000ms

Audio Silence Detection Period (sec) (DA/AA only)

Audio Channel Silent Alarm will be raised if the configured silence period is exceeded.

0 to 1000 seconds

Table 8: VS906 Control Settings – Output Channel Configuration

5.3.1 Notes On Output Channel Configuration Flow A / Flow B naming convention refers to the streams coming from Network Ports 1 / 2 for decode. Flow A streams always use Network Port 1, and Flow B streams always use Network Port 2. The Flow x Port IP Address parameter for each port is the IP Address that will respond to ARPs and Pings, the first of these being needed for Unicast operation to work, and the latter of these being useful for diagnostic purposes. This IP Address is also used as the source address for IGMP packets. For a simple network setup where all the channels are either not VLANed, or are all in the same VLAN, then it is simplest to set the Flow x Port IP Address of all channels to the same value, which becomes a nominal “card IP address”. For unicast operation the Flow x Source IP Address and Flow x Source IP Address Mask fields combine to provide a flexible source filtering capability. The easiest option for a simple network is to set both fields to 0.0.0.0, which will allow any source IP address to be processed. The next option is to set the mask to 255.255.255.255, which will limit the system to only accepting packets from one specific source address. Different mask values between these extremes will allow ranges of source addresses to be used. The Flow x Destination IP Address (and Flow x Destination UDP Port) is used to select the value that will be accepted in the destination IP address field in the packets received. For unicast operation, this is usually the same as the Flow x Port IP Address value (though with a more complex network setup other options are possible) because that is where you need to have the encoder card send the packets to have them received by the decoder card. This may make this field seem redundant, but when operating in a multicast environment this becomes more obviously important, as this field selects which multicast group the output will attach to, and controls the IGMP join process as well. Flow x Destination UDP Port values are only accepted when a multiple of 8. This is due to the reservation of port numbers n+2, n+4 and n+6 for FEC flows and Media Helper Packets (MHP). Invalid values will be automatically adjusted to the nearest correct value. The SIPS Pre Buffer configures a buffer ahead of the incoming network data flows to allow for one of the feeds to be lagging the other flow i.e. one of the flows having a longer network path than the other and therefore a differential delay between the two feeds.


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The Network Jitter Tolerance and the SIPS Pre Buffer are additive in terms of the latency introduced to the overall end-to-end network. If the Expected Lagging Flow parameter is set to a value other than “Auto” i.e. set to “Flow A” or “Flow B”, then the SIPS Pre-Buffer value will only be applied if the leading (or shortest path) flow i.e. the flow not configured as the Expected lagging Flow, is connected first. If the lagging (longest path) flow is connected first, it will only be delayed enough for the configured Network Jitter Tolerance. In “Auto” mode, the first feed connected will always be delayed by the full amount, to ensure that the second feed connected can be correctly buffered and aligned. For intra-country national networks, because of the distances involved, typically a setting of 3-5ms should be sufficient for the SIPS Pre Buffer to compensate for the variation in differential latency between the two network flows. The transmission time difference (latency) of the two incoming network feeds, Flow A and Flow B, through the network is measured. This is called the Differential Latency Measurement (DLM). This measurement can be used to trigger an alarm based on the DLM Error Threshold configuration parameter. This measurement and alarm can be used to indicate potential and unwanted network reroutes resulting in the differential latency between the two network routes being outside of the specification.


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5.4 Alarm Settings

Alarm settings can be configured using the Edit Alarm Configuration menu option under the EDIT CONFIG tab on the web interface for the card. It is possible to assign a certain Hold and Persistence time to each alarm.

Persistence Time - the time an alarm has to be active before it appears in the alarm list and for a SNMP alarm notification to be sent. The Persistence time is useful for filtering low priority alarms and for conditions that naturally appear in video/audio streams.

Hold Time - the time (in seconds) for which VS906 keeps an alarm active after it has cleared. The hold timer can be used to keep oscillating alarms permanently active. This prevents resending alarm/clear traps and the alarm list will not be filled up with the oscillating alarm.

Note: It is recommended that the Hold Time should never be set to less than 1 second.

One of the following seven alarm priorities can be assigned to each alarm:

Disable, Log Only, Information, Warning, Minor, Major or Critical. These priorities and the Persistence and Hold Times can be assigned in the Edit Alarm Configuration menu under the Edit Config tab. Additionally, each VS906 card slot in the VS103 and VS101 chassis has a major alarm which is fed to a connector on the rear of the chassis. This enables external monitoring through contact closures.

Note: Persistence and Hold times are both configured in seconds. Max value for each is 255 seconds.


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5.5 Alarm Configuration

5.5.1 Alarm Settings The figure below, shows part of the Edit Alarm Configuration menu. Each of the VS906 variants has a similar menu where alarm priorities, persistence time and hold times can be configured.

Figure 14: VS906 Alarm Settings


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Note: Where X is the channel number (1-8).

Alarm Parameter Description

Card Fail Internal hardware bus error, Component failure etc.

Link Loss - Network Port 1 Network Port 1 Link Loss (Link down)

Link Loss - Network Port 2 Network Port 2 Link Loss (Link down)

Reference Clock Error At least one output is configured to use the external reference clock but the card cannot detect or lock to the reference clock

Card License Error Activated if no valid license is installed on the card or a card is configured in a functional mode for which there is no valid license.

Input Loss - Input X (E1/DA only)

Input signal (audio/data) loss on Input X

Input Line Code Error - Input X (E1 only)

Errors in the Line Code detected in the signal connected to Input X (possible causes are faulty cabling/connectors or interference).

This alarm applies to VS906-E1 only.

Input AIS Alarm - Input X (E1 only)

Alarm Indication Signal (AIS) detected in the signal connected on Input X.

This alarm applies to VS906-E1 only.

Partner Flow Loss - Input X Card is configured in Encoder Partner Protection mode (Network Output Mode set to Master or Slave) but no partner flow detected for Input X

Partner Flow RTP Errors - Input X Activated when RTP errors are detected on the flow from the Partner Encoder card for Input x.

Output Loss - Output X

Output Loss will be active if the Jitter Buffer runs out of data.

If SIPS is disabled this will be caused by a Flow A loss.

If SIPS is enabled this alarm will be caused by a simultaneous Flow A and Flow B loss.

Post SIPS RTP Discontinuity Error - Output X

Activated when Post SIPS RTP Discontinuity Counts (un-correctable errors) are detected for Output X.

Flow A Loss - Output X Flow A Loss on Output X

Flow A is the data traffic received on Network Port 1

Flow B Loss - Output X Flow B Loss on Output X

Flow B is the data traffic received on Network Port 2

Buffer Error - Output X

SIPS cannot align Flow A and Flow B.

A possible cause could be that the differential latency between Flow A and Flow B is larger than the SIPS Pre-buffer setting


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Alarm Parameter Description

PDV Error – Output X

If the measured PDV (Packet Delay Variation) value for Flow A or Flow B is equal or larger than the configured PDV Error Threshold the PDV Error will be raised.

A PDV Error Threshold can be individually configured for each Output.

Flow A/B RTP Discontinuity Error – Output X

The alarm will be raised if a discontinuity in the RTP sequence counter is detected for each Flow A/B.

Causes could be lost packets, out of order packets or duplicated packets

Input Channel 1/2 Silent – Input X (DA/AA only)

Input audio channel has been silent (lower level than the configured Audio Silence Threshold) for longer than the configured Audio Silence Detection Period.

An Audio Silence Detection Period (in ms) can be individually configured for each Input.

Input Channel 1/2 Overload – Input X (DA/AA only)

Audio channel has reached 0 dBFS

Audio Silent Error – Output X (DA/AA only)

Output audio channel has been silent (lower level than the configured Audio Silence Threshold) for longer than the configured Audio Silence Detection Period.

An Audio Silence Detection Period (in ms) can be individually configured for each Output.

Table 9: VS906 Alarm Settings

5.6 Alarm Priority Level Reset Following a change of card mode and subsequent card reboot, the card alarm priority levels need to be reset. This can be achieved using the Use Defaults button in the Edit Alarm Configuration menu, see below. Then Save Changes

Figure 15: Card Alarm Priority Level Reset

Note: It is recommended to reset the card alarm priorities levels after a change of card functional mode is performed.


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5.7 Upload/Download Card Configuration Settings The Ventura element management card allows VS906 configuration to be downloaded as a file to the computer, or allows a previously downloaded file to be uploaded to the VS906.

5.7.1 Configuration Upload Procedure

The upload configuration procedure is detailed below.

Click on the VS906 image icon.

Select the “EDIT CONFIG” tab menu.

Select the “Configuration Upload/Download” menu item. A pop-up window will appear:

Figure 16: Configuration Upload

Click on “Browse” button (shown above) and navigate to folder where all card’s configuration files are stored. Select and double click configuration file and then click on “Upload Config” button, as shown below:

Figure 17: Upload Configuration File Selection

Note: It is recommended to keep a backed up repository of card configurations such that these can be used to restore configurations in the

event of card failure or swap


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Click on “OK” button, as shown below:

Figure 18: Upload Configuration Warning

Because of the large number of configuration items, the upload process may take some time. When it has completed, a pop up message will be displayed, as shown below: Click on “OK” button, as shown below:

Figure 19: Upload Configuration Succeeded

5.7.2 Configuration Download Procedure

The download configuration procedure is detailed below.

Click on the VS906 image icon.

Select the “EDIT CONFIG” tab menu.

Select the “Configuration Upload/Download” menu item. A pop-up window will appear:

Figure 20: Configuration Download

Click ‘Download Config’ and a pop-up window will appear asking for the location where you would like the save the configuration file (.cfg).


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6 Installation

6.1 Inspection Inspect the VS906 for signs of damage. The shipping contained should prevent damage to the product. Keep the shipping container, this will be required should the product need to be returned or shipped further. Verify that the package contains the correct card and connector panel.

6.2 Handling The VS906 contains static sensitive devices and proper static free handling precautions should be observed. When individual modules are stored, they should be placed in plastic shipping container or antistatic bags. Proper antistatic procedures should be followed when inserting and removing cards from these shipping containers or bags.

Caution: The VS906 should be handled carefully to prevent safety hazards and equipment damage. Follow the instructions for installation and use only

installation accessories recommended by the manufacturers.

6.3 Grounding Chassis ground connection of the equipment-mounting frame is via the earth connection on the three-pin (IEC) AC mains supply inlet. This is a safety ground and must be connected.

Warning: The chassis must be correctly earthed through the moulded plug supplied. If the local mains supply does not provide an earth connection do not

connect the unit.

Ground can also be made to the rack housing the VS103 chassis via the two grounding nuts on the alarm panel at the rear of the chassis or to a VS101 chassis via one grounding nut at the rear.


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6.4 Module Installation To install the module in a chassis, please see the instructions for the appropriate frame type in the chassis/PSU’s manual. For VS906 card installations the VS103-xx-IFAH, VS101-3H-AC, VS101-3HP-AC and VS101-3H-DC chassis should be used. The VS103-xx-IFA & VS101-3-xx chassis should not be used for VS906 card installations due to limited airflow & reduced power capability.

Note: The recommended chassis for VS906 installations are VS101-3H-AC, VS101-3HP-AC, VS101-3H-DC, VS103-DC-IFAH and VS103-

AC-IFAH

Currently there is a restriction of installing a maximum of eight VS906-xx cards in the VS103-AC-IFA chassis using VS113/123 PSUs and a maximum of two VS906-xx cards in the VS101-3 or VS101-3H chassis. This is due to power supply limitations. Failure to observe this restriction may results in failure of the chassis PSU modules and a loss of services being carried by the cards installed in the chassis. When the VS101-3H is used the card should be installed in Slot 3, next to the fan module. This restriction does not apply to the VS103-AC-IFAH chassis with VS134 PSU fitted.

Caution: There is a restriction of installing a maximum of eight VS906-xx cards in a VS103-AC-IFA chassis with VS113/123 PSUs fitted and

two VS906-xx cards in a VS101-3 or VS101-3H chassis

The VS906 does not require any adjustment prior to use. There are no external controls on the front panel of the units other than the rotary audio channel monitor select switch. The audio/data connections are made to the DB25 connectors on the rear panel. Care must be taken to provide clean connectors, both on the card & the external cables.

6.5 Installation Environment As with any electronic device, the VS906 should be installed where it will not be subjected to extreme temperatures, humidity, or electromagnetic interference. Specifically, the selected site should meet the following requirements:

• The ambient temperature should be between 0 and 50 ◦C (32 and 122 ◦F).

• The relative humidity should be less than 95 %, non-condensing. Do not install the unit in areas of high humidity or where there is danger of water ingress.

• Surrounding electric devices should comply with the electromagnetic field (EMC) standard IEC 801-3, Level 2 (less than 3 V/m field strength).


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• Make sure the equipment is adequately ventilated. Do not block the ventilation holes above, below or on either side of the chassis (depending on which frame the card has been installed in).

• When a single VS103 chassis has been installed, ensure that a VS111 heat deflector is fitted directly below, to prevent hot air rising into the chassis.


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7 Connections

7.1 Front and Rear Panel Diagrams The following front panel and rear assembly drawings are not to scale and are intended to show connection order and approximate layout only.

Figure 21: Front and Rear Panel Connectors


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7.2 Interface Cables The following cables and patch panel options are available to provide connectivity in and out of the VS906 products. These products are all available to order and can be supplied independently of the VS906 cards.

7.2.1 DB25M to 8 x BNC Cable

Cable is used for VS906-E1 Lead: 25 D to 8 x BNC Male Plug Connector Type A: 25 Way D Connector Type B: 8 x BNC Male Plugs Lead Length: 2m No. of Poles: 24 Part no.: VS906-DB25M-8BNCM (22195-0300) Item No.: 23114

Figure 22: DB25M to 8 x BNC Cable

7.2.2 DB25M to 8x XLRM (Male)

Cable used for VS906-AA and VS906-DA outputs. Lead: 25 D to 8 x XLR Male Plug Connector Type A: 25 Way D Connector Type B: 8 x XLR Male Plugs Lead Length: 2m No. of Poles: 24 Part No.: VS906-DB25M-8XLRM (22195-0298) Item No.: 23112


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7.2.3 DB25M to 8x XLRF (Female)

Cable used for VS906-AA and VS906-DA inputs. Lead: 25 D to 8x XLR Female Plug Connector Type A: 25 Way D Connector Type B: 8 x XLR Female Plugs Lead Length: 2m No. of Poles: 24 Part No.: VS906-DB25M-8XLRF (22195-0299) Item No.: 23113

Figure 23: DB25M to 8 x XLRM Cable

7.2.4 Patch Panel 16-Port CAT5E/RJ48

Patch panel used for VS906-E1 120 ohm inputs and outputs. Connector Type: RJ48 LAN Category: Cat5e No. of Ports: 16 Rack U Height: 1U Colour: Black External Depth: 45mm Kit Contents Descriptive: Panel, screws and cable ties No. of Ports: 16 Part No.: VS906-DB25M-RJ45-PANEL Item No.: 23111


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Figure 24: CAT5E/RJ48 patch panel

7.2.5 Patch Panel 16-Port BNC

Patch panel used for VS906-E1 75 ohm inputs and outputs. Connector Type: BNC (F) No. of Ports: 16 Rack U Height: 1U Colour: Black External Depth: 45mm Kit Contents Descriptive: Panel, screws and cable ties No. of Ports: 16 Part No.: VS906-DB25M-BNC-PANEL Item No.: 23115


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7.3 Front Panel LED’s A number of LED indicators are provided on the front panel of the card. These LEDs provide indication of the card status and current alarm conditions. The front panels LEDs are replicated on the Web interface.

Figure 25: VS906 Front Panel LED Layout

For each LED the table below provides a description of the indicator and the meaning of the indicator based on the colour of the LED.

Silk screen Description Activation

IN A (1~8) Channel Input A Status

Green = Signal present

Green Flashing = Signal present but not being used to transmit (see below) Amber = Signal present but Error on signal Red = Loss of signal Off = Channel disabled or not available

IN B (1~8) Channel Input Status from Partner card (used in partner encoder mode only)

Green = Signal present

Green Flashing = Signal present but not being used to transmit (see below) Amber = Signal present but Error on signal Red = Loss of signal Off = Channel disabled or not available

OUT A (1~8) Channel Output Status

(network feed A)

Green = Signal (flow) present

Green Flashing = Flow present but not coherent with Flow B. Blocked output flow denoted by flashing LED (see below) Amber = Signal present but Error on signal Red = Loss of signal Off = Channel disabled or not available

OUT B (1~8)

Channel Output Status

(network feed B – only used in SIPS protection mode)

Green = Signal (flow) present

Green Flashing = Flow present but not coherent with Flow A. Blocked output flow denoted by flashing LED (see below) Amber = Signal present but Error on signal Red = Loss of signal Off = Channel disabled or not available


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Silk screen Description Activation

ECG Card ECG Heart Beat / Status

Flashing Blue = the unit is up and running.

FAIL Card Fail Status

Red = Card Failure Off = No failure The Card Fail LED is lit when a system error or hardware fault is detected halting the initialization or operation of the card.

LINK NET 1 Network 1 Link Green = Link up Red = Link down Off = Link Loss alarm disabled

LINK NET 2 Network 2 Link Green = Link up Red = Link down Off = Link Loss alarm disabled

LINK AUX

(Future) Auxiliary Link

Green = Link up Red = Link down Off = Ethernet Link inactive

ACT NET 1

(Future) Network 1 Activity

Flashing Amber = Packets received Off = no activity

ACT NET2 (Future)

Network 2 Activity Flashing Amber = Packets received Off = no activity

ACT AUX (Future)

Auxiliary Activity Flashing Amber = Packets received Off = no activity

DC The Power LED is lit to indicate that all internal power supplies are present.

Green= DC Power from backplane

Off = Card has failed to turn on

Table 10: VS906 Description of Front Panel LED's

Input LEDs: The ‘IN A’ LEDs indicate the status of the local input (connected via the rear panel DB25 connector). The ‘IN B’ LEDs are only used in Master/Slave (Encoder Partner Protection) mode and indicate the status of the partner flow, i.e. the input which is connected via the Ethernet cross connection. Green flashing input LEDs mean that the input is present and detected, but it isn’t currently used to transmit packets to the network. This could be because of an invalid destination IP address (0.0.0.0 or 127.0.0.1), if the Encoder didn’t get an ARP response for the destination or the gateway in unicast mode or in EPP mode because the partner is currently used to play out to the network. If the internal test tone generator is enabled the ‘IN A’ LED will be yellow for that channel. Output LEDs: The ‘OUT A’ LEDs indicate the status of Flow A (i.e. the flow received through Network Port 1). The ‘OUT B’ LEDs are only used if SIPS is enabled and indicate the status of Flow B (i.e. the flow received through Network Port 2). Green flashing output LEDs means that the decoder detected that Flow A and B are incoherent (different SSRC for Flow A and Flow B) and has blocked one of the flows (SSRC blocking). The LED for the blocked flow will be blinking.


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Example An EPP setup where currently the Master input is used for Flow A and Flow B (Master SSRC is used for both flows): Master IN A LED is green, IN B LED is flashing green (local input active) Slave IN A LED is flashing green, IN B LED is green (partner flow active)

7.4 Rear Connector Panel Connectivity

Connectivity to the VS906 is provided by a number of connectors on the rear connector panel. The relative locations of the connectors can be seen on the connector panel drawing Figure 21: Front and Rear Panel Connectors.

Label or Location Description

SFP Network Port 1

SFP Network Port 2

Network Interfaces Port A and Port B

Gigabit Ethernet (Optical or Electrical), 1000Base-X

Ethernet 1000 Auxiliary Port Ethernet 100/1000Base-T (future use)

Audio Ref Clk

Output reference clock (sample rate converter) input.

DA/AA: 48kHz word clock E1: 2.048 MHz clock

Audio Out (J2) Outputs for audio/data on DB25

Audio In (J1) Inputs for audio/data on DB25

Alarm External Alarm Relay Output

Table 11: VS906 Rear Connector Panel Labels and Descriptions

The table below provides a pin out description for the Audio/Data input and output connectors. These connectors are labelled as J1 (Audio In) and J2 (Audio Out) on the rear connector panel


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DB25 J1: Inputs DB25 J2: Outputs

Channel Pin No Polarity Channel Pin No Polarity

Input 1 24 P

Output 1 24 P

12 N 12 N

Input 2 10 P

Output 2 10 P

23 N 23 N

Input 3 21 P

Output 3 21 P

9 N 9 N

Input 4 7 P

Output 4 7 P

20 N 20 N

Input 5 18 P

Output 5 18 P

6 N 6 N

Input 6 4 P

Output 6 4 P

17 N 17 N

Input 7 15 P

Output 7 15 P

3 N 3 N

Input 8 1 P

Output 8 1 P

14 N 14 N

Ground 2,5,8, 11,16,

19,22, 25 Ground Ground

2,5,8, 11,16,

19,22, 25 Ground

Table 12: Audio/Data Connector pin outs

If BNC cable, VS906-DB25M-8BNCM, is being used, the N signal pin for each channel should be connected to the shield of the BNC connector and also the Ground pins listed above.

7.5 SFP/SFP Options The following tables list the recommended SFP options for use with the VS906.

7.5.1 VS906-AA, VS906-DA and VS906-E1 – 1Gbps SFP modules

Model Mode Wavelength Connector Distance

SFP-TR1-850-SR Multimode 850nm LC <200m

SFP-TR1-13T-ER Singlemode 1310nm LC <40km

SFP-TR1-C1550-ER Singlemode 1550nm LC <70km

SFP-TR1-Cxxx-ER Singlemode 1470-1610nm LC <70km

SFP-1GE-RJ45 Electrical n/a RJ45 100m

Table 13: Recommended SFP Modules for 1Gbps interfaces


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7.6 Reference Clock An external reference clock input is provided on the rear connector panel. This provides the ability to lock audio/data outputs from the card to an external reference clock signal (sample rate). If this external reference clock is not used, the card uses adaptive clock recovery to generate an internal synthesized clock for data output. For all versions of the VS906, the option of using either an internal or externally provided reference clock can be selected, this can be configured on an output by output basis. The configuration for this can be located on the Out 1 to 8 tabs.

7.6.1 VS906-E1 Clock Reference

The clock reference options for the VS906-E1 are: Adaptive Clock Recovery (internal) or Ref. Clock Input (external).

Figure 26: VS906-E1 Output Clock Configuration

If an external reference clock is selected this can be provided in two forms: 1. An external 2.048MHz clock reference signal, such as GPS, connected to the Ref

Clk input BNC connector on the rear panel. 2. An E1 signal (HDB3 encoded) connected to Input 1 on the card.

The configuration for the above can be located on the Main tab. The options are Reference Clock Input 1 or BNC Ref. Clock Input. Therefore to use an external reference clock connected to the rear panel BNC connector:

1. Select ‘Ref. Clock Input’ on tabs Out 1 to Out 8 for each output using the external clock under the Output Clock configuration item.

2. Select ‘BNC Ref. Clock Input’ under the Main tab item Reference Clock Input.

Figure 27: VS906-E1 Reference Clock Source Configuration

The ‘Input 1’ option is useful in applications where a 2.048MHz GPS referenced clock is not available but where input E1 signals, already locked to GPS, are available. This second option can even be used where input channel 1 is not being used for data transmission (channel disabled).


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7.6.2 VS906-DA/-AA Output Sample Rate Converter (Clock Reference)

The clock reference options for the VS906-DA/VS906-AA are Adaptive Clock Recovery (internal) or external Sample Rate Convertor (SRC). The sample rate convertor frequency is provided via the rear panel Ref Clk. input connector and enabled by setting the Sample Rate Convertor configuration item to Enabled.

Figure 28: VS906-DA/-AA Output SRC Configuration

The external clock reference on the VS906-DA and VS906-AA should be connected to a 48KHz word clock signal. If one or more output is configured to use an external reference clock but no clock signal is detected at the reference clock input connector, a Reference Clock Error alarm will be raised.

7.6.3 VS906-DA Input Sample Rate Converter

A variant of the VS906-DA firmware is available with input sample rate converters that can be configured for each audio input. The input sample rate converters can be configured to sample the input audio at the required frequency, 32kHz or 48kHz. Alternatively the default setting of ‘Bypass’ passes the input audio with no resampling.

Figure 29: VS906-DA Input SRC Configuration


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7.7 External Alarm Relay Output The connection for an external alarm is located on the rear connector panel. The major alarm signal comes from a relay contact on the motherboard card. The contacts will be closed to indicate an alarm. The signalling pin-out is as follows:

1

4

Major Alarm

(Normally Open)

Pin Signal

1 Major Alarm

2 Major Alarm

3 Not Used

4 Not Used

Table 14: Pin-out for the External Alarm Relay Output

The following mapping definition is used to map alarms priority levels (see Alarm Settings) to the external alarm relays. Alarm priority levels defined as

"Major" and "Critical" map to the Major Alarm pin above.

"Information", "Warning" and "Minor" map to the Minor alarm pin (not available on VS906)

"Disable" and "Log Only" levels do not activate either alarm pin.


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7.8 Front Panel Maintenance Port The front panel maintenance port serves as an engineering debug port. It also provides a means of upgrading one or all of the codes images stored on the card. The process for upgrading the card images is described in Section 12 Remote Upgrade Procedure.

7.9 Audio Panel Monitor A front panel monitor is provided for monitoring buffered audio/data inputs or outputs. Using the rotary switch on the front panel, any one of the inputs or outputs can be selected for monitoring using the front panel monitor output:

Switch Position Function Switch Position Function

1 Ch 1 Input 9 Ch 1 Output

2 Ch 2 Input A Ch 2 Output

3 Ch 3 Input B Ch 3 Output

4 Ch 4 Input C Ch 4 Output

5 Ch 5 Input D Ch 5 Output

6 Ch 6 Input E Ch 6 Output

7 Ch 7 Input F Ch 7 Output

8 Ch 8 Input 0 Ch 8 Output

Table 15: Front Monitor Port Channel Selection

Figure 30: Front Panel Monitor Connector

Note that the VS906-DA card uses only the right hand (when viewed from the front of the vertical card) of the two front panel audio monitor connectors.

Pin Signal

1 N (-ve)

2 P (+ve)

3 Ground

Table 16: Pin Out of Front Panel Monitor Connector


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7.10 Switch Settings A 4-way dip switch is located on the main pcb. A description of the switch functions and settings is provided in the table below. The dip switches are used to control the test modes. For normal operation switch 1 to 4 must be closed (down).

Switch Factory Default Settings

S1-1 DOWN / CLOSED Must be in this position for proper operation




Table 17: S1 Switch Functions

Caution: For normal operation, all switches must be in the closed position (down) otherwise the card may enter a test mode upon boot up


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8 Element Management

The Ventura AEMS Advanced Element Management System is a comprehensive web browser-based management system that supports the VS906-AA, VS906-DA and VS901-E1 products. The VS906 cards must be used with the FCS183-AEMS or FCS101-AEMS version 4.40 or higher to set and/or change module operating parameters. The AEMS version can be found from browser screen HELP tab (see below). The AEMS Web GUI for VS906 has the ability to report alarms, current status and configuration as well as containing the ability to remotely configure all the system parameters. The AEMS also provides SNMP traps for major and minor alarms for all cards in a Ventura chassis. A full description of the FCS183-AEMS and FCS101-AEMS management cards can be found in the user manuals, which can be downloaded from the AEMS help page or obtained by contacting your local sales office.

Figure 31: Element Management Web Interface


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9 Card Status

Information about the card status of any VS906 card can be found in the Status menus. All of the status information for the VS906 cards can be displayed by using Nevion Element Management web interface. Select the VS906 by clicking on the front panel displayed in the web browser, then click on STATUS. See Figure below. The VS906 Status information include Status Summary, Card Configuration Status, Input 1-8 Status, Output 1-8 Status, Alarm Configuration Status, Alarm Group Configuration Status, Alarm Statistics, and History.

Figure 32: VS906 Card Status Menu


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9.1 Status Summary The current status of the card can be displayed using the Status Summary menu option under the Status tab on the cards web interface. The card status summary window shows VS906 maintenance IP address, FPGA temperature, board temperature, IP packet rates for the network ports and current alarms, etc. The card status window can be refreshed by clicking on the refresh button. The alarms/event history can be displayed by using the history button. All windows can be saved to a file.

Figure 33: VS906 Card Status Summary

Although the Status Summary for the VS906-E1 is shown above, the information contained in the Status Summary page for each version of the VS906 is almost identical. For this reason, the screenshot and description of each status item for each version is not repeated here. Card Status Number of Inputs

Indicates the number of licensed inputs available. Number of Outputs

Indicates the number of licensed outputs available. Virtex FPGA Temperature

Displays internal core temperature of the on board FPGA device in degrees Celsius. Board Temperature

Displays the operating temperature of the VS906 board in degrees Celsius.


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Network Interface Statistics Good IP Rx Packets - Network Port 1

Displays the received rate of IP packets on the Network Port 1 interface (pkts/s). Good IP Rx Packets - Network Port 2

Displays the received rate of IP packets on Network Port 2 interface (pkts/s). Card Alarm Indications Card Fail

Indications potential hardware failure

Card License Error Indicates no license file installed or an error with the installed licence file.

Card License Status

Displays the reason for the Card License Error when activated. Reference Clock Error

Alarm active if one or more output is configured to use an external clock reference and no clock signal is detected at the rear panel Ref Clock Input.

Link Loss – Network Port 1

Indicates that no Network link is detected (Link down) on Network Port 1 (SFP Interface A).

Link Loss – Network Port 2

Indicates that no Network link is detected (Link down) on Network Port 2 (SFP Interface B).


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9.2 Input Status The current status of any input to the card can be displayed using the Input Status 1 to 8 menu options under the Status tab on the cards web interface. The input status summary window contains information about the specific input, including alarms such as Input Loss, Line Code Error and AIS alarm.

9.2.1 VS906-E1

Figure 34: VS906-E1 Input Status

Input – Input x Indicates current status of channel transmission for the relevant input. Options are Enabled or Disabled.

Input Loss – Input x

Indicates loss of E1 input signal on the relevant input. Input Line Code Error – Input x

Indicates a line code, HDB3, error on the relevant input.

Input AIS Alarm – Input x Indicates an ‘Alarm Indication Signal’ detected in the incoming E1 signal.

Partner Flow Loss – Input x Indicates a loss of the signal on the x-strap connection between the Master and Slave Encoder cards.


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9.2.2 VS906-DA

Figure 35: VS906-DA Input Status


Input Loss – Input x

Indicates loss of audio input signal on the relevant input. Input Sample Rate (kHz) – Input x

Reports the sampling rate of the audio input signal on the relevant input. Input Error – Input x

Indicates an error detection in the audio input signal on the relevant input. Input Channel 1 Silent – Input x

Indicates ‘silence’ or -60dBFS audio level on Left channel of the relevant input for longer than the configured Audio Silence Detection Period.

Input Channel 2 Silent – Input x Indicates ‘silence’ or -60dBFS audio level on Right channel of the relevant input for longer than the configured Audio Silence Detection Period.

Input Channel 1 Overload – Input x Indicates ‘overload’ or 0dBFS audio level on Left channel of the relevant input.

Input Channel 2 Overload – Input x Indicates ‘overload’ or 0dBFS audio level on Right channel of the relevant input.


Partner Feed RTP Errors – Input x Indicates RTP errors in the signal received on the cross-strap from the partner Encoder card for the relevant input.


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9.2.3 VS906-AA

Figure 36: VS906-AA Input Status


Input Channel 1 Silent – Input x

Indicates ‘silence’ or -60dBFS audio level on Left channel of the relevant input for longer than the configured Audio Silence Detection Period.

Input Channel 2 Silent – Input x Indicates ‘silence’ or -60dBFS audio level on Right channel of the relevant input for longer than the configured Audio Silence Detection Period.

Input Channel 1 Overload – Input x

Indicates ‘overload’ or 0dBFS audio level on Left channel of the relevant input.

Input Channel 2 Overload – Input x Indicates ‘overload’ or 0dBFS audio level on Right channel of the relevant input.


Partner Feed RTP Errors – Input x Indicates RTP errors in the signal received on the cross-strap from the partner Encoder card for the relevant input.


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9.3 Output Status The current status of any output from the card can be displayed using the Output Status 1 to 8 menu options under the Status tab on the card’s web interface. The output status summary window contains information about the specific output, including alarms such as Output Loss, PDV and Buffer error alarms. The output status window for each output also includes Flow Loss alarms and media packet counters for each network flow (A and B) being received by the card.

9.3.1 VS906-E1

Figure 37: VS906-E1 Output Status

Output – Output x

Indicates current status of channel transmission for the relevant output. Options are Enabled or Disabled

Output Loss – Output x

Indicates loss of output signal on the relevant output. If SIPS is disabled, this will be caused by a Flow A loss. If SIPS is enabled, this alarm will be caused by a simultaneous Flow A and Flow B loss.

Post SIPS RTP Discontinuity Error – Output x

Indicates a RTP discontinuity error in the received signal post SIPS and FEC buffers for the relevant output. The alarm will be active if a discontinuity in the RTP sequence counter is detected. Causes could be lost packets, out of order or duplicated packets.


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PDV Error – Output x Active when the measured PDV (Packet Delay Variation) for Flow A or B is equal to or larger than the configured PDV Error Threshold for that output.

Buffer Error – Output x Indicates a buffer error on the relevant output. Active when SIPS cannot align Flow A and Flow B. A possible cause could be that the differential latency between Flow A and Flow B is larger than the SIPS Pre-buffer setting.

Differential Latency (ms) – Output x

Displays the differential delay for the relevant channel, between the two network paths received at the network interfaces, Port 1 and 2 (A and B), in milliseconds.

Leading Flow – Output x

Indicates which of the Network flows is leading (A or B). FEC Present – Output x

Indicates the presence of an FEC stream in the received channel. FEC Dimensions – Output x

Indicates the LxD dimensions of the FEC matrix present on the relevant output. Flow A/B Loss – Output x

Indicates loss of received signal from Network Flow A/B for the relevant output. Flow A/B RTP Discontinuity Error – Output x

Indicates a RTP discontinuity error in the received signal from Network Flow A/B for the relevant output. The alarm will be active if a discontinuity in the RTP sequence counter is detected. Causes could be lost packets, out of order or duplicated packets.

Flow A/B Media Packets (per sec) – Output x

Displays the number of media packets received (per second) from Network Flow A/B for the relevant output.

Flow A/B PDV (ms) – Output x Displays the measured PDV, in milliseconds, of the received signal from Network Flow A/B for the relevant output.

Flow A/B Decoder Latency (ms) – Output x Indicates the decoder latency, in milliseconds, in the received signal from Network Flow A/B for the relevant output. The time the signal gets delayed in the decoder due to buffering.


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9.3.2 VS906-DA

Figure 38: VS906-DA Output Status

Output – Output x Indicates current status of channel transmission for the relevant output. Options are Enabled or Disabled.

Output Loss – Output x Indicates loss of output signal on the relevant output. If SIPS is disabled, this will be caused by a Flow A loss. If SIPS is enabled, this alarm will be caused by a simultaneous Flow A and Flow B loss.

Post SIPS RTP Discontinuity Error – Output x

Indicates a RTP discontinuity error in the received signal post SIPS and FEC buffers for the relevant output. The alarm will be active if a discontinuity in the RTP sequence counter is detected. Causes could be lost packets, out of order or duplicated packets.

PDV Error – Output x

Active when the measured PDV (Packet Delay Variation) for Flow A or B is equal to or larger than the configured PDV Error Threshold for that output.

Audio Silent Error – Output x Indicates the output audio signal level is below the configured Audio Silence Threshold for longer than the configured Audio Silence Detection Period.

Received Audio Format – Output x

Indicates the output audio format Stereo or Mono, compressed or Uncompressed. Differential Latency (ms) – Output x



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Leading Flow – Output x Indicates which of the Network flows is leading (Flow A or Flow B).

FEC Present – Output x





Flow A/B PDV (ms) – Output x

Displays the measured PDV, in milliseconds, of the received signal from Network Flow A/B for the relevant output.

9.3.3 VS906-AA

Figure 39: VS906-AA Output Status

Output – Output x

Indicates current status of channel transmission for the relevant output. Options are Enabled or Disabled.


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Output Loss – Output x Indicates loss of output signal on the relevant output. If SIPS is disabled, this will be caused by a Flow A loss. If SIPS is enabled, this alarm will be caused by a simultaneous Flow A and Flow B loss.

Post SIPS RTP Discontinuity Error – Output x Indicates a RTP discontinuity error in the received signal post SIPS and FEC buffers for the relevant output. The alarm will be active if a discontinuity in the RTP sequence counter is detected. Causes could be lost packets, out of order or duplicated packets.

PDV Error – Output x

Active when the measured PDV (Packet Delay Variation) for Flow A or B is equal to or larger than the configured PDV Error Threshold for that output.

Audio Silent Error – Output x

Indicates the output audio signal level is below the configured Audio Silence Threshold for longer than the configured Audio Silence Detection Period.

Received Audio Format – Output x

Indicates the output audio format Stereo or Mono, compressed or Uncompressed. Differential Latency (ms) – Output x


Leading Flow – Output x

Indicates which of the Network flows is leading (Flow A or Flow B). FEC Present – Output x





Flow A/B PDV (ms) – Output x

Displays the measured PDV, in milliseconds, of the received signal from Network Flow A/B for the relevant output.


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9.4 Audio Level Meters

Audio levels meters provide a graphical display of audio levels for all inputs and all outputs. The audio level meters can be displayed by selecting the Audio Level Meters option under the card Status tab.

Audio level meters are available on the VS906-AA and VS906-DA. The level meters display for the audio level for left (L) and right (R) channels for each card input and output. A numerical audio level reading in -dBm is also displayed. The level for a mono configured channel is displayed in the left channel meter only.

Figure 40: VS906 Audio Level Meters


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9.5 License Status

The VS906 product is based on licensing in order to enable functionality. If a feature is enabled in the card configuration and no valid license file is found on that card the feature will not operate. A license is produced and installed at manufacture against a customer order. Additional features can be added to a card by uploading an additional license to the card at a later date. Please contact a local Nevion Sales Office to arrange additional licenses. The process to upload and install license files is described in the License File Installation section of this document.

Note: License files are keyed against the card serial number when produced and cannot be moved between cards.

The status of an installed license can be found under the Status tab in the Card License Details menu option. The license detail screen displays the number of channels enabled in the license along with other enabled features such as FEC. An example of the Card License Detail is shown below

Figure 41 Card License Detail Menu

If there is a problem with the license file, a Card License Error alarm will be activated. This alarm is displayed under the Status tab in the Status Summary menu. This alarm will be raised for example if no license file is installed or if the license file signature is invalid.


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When the Card License Error alarm is active, the card fail LED on the front panel will also flash. If a card is configured into a mode of operation for which no license has been installed, the card will report a Card License Error and provide a reason for this error alarm.

Figure 42: Card License Error

In this situation, if no licensed channels are installed for a functional mode, Channel Transmission will be automatically disabled for each input and output and these cannot be configured as Enabled by the user. In the Main configuration tab, the Channel License Allocation configuration parameter will also be automatically set to ‘No licensed channels’.

Figure 43: Channel License Allocation


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9.6 Fallback Mode

Each VS906 card contains a reserved boot image location for ‘Fallback’ purposes. The fallback code image will be loaded in the event of a failure occurring during the loading, or booting from, one of the functional boot images. The purpose of the fallback code image is to ensure that the card still boots into a remotely recoverable mode upon these failure events. The card will also attempt to load the fallback code should the current active boot image become corrupted during an upgrade. A VS906 card running in Fallback mode can be noted in two ways. The representation of the card will be marked ‘VS906 FB’ and the card mode type will be labelled as ‘VS906 Fallback Mode’ as shown in the diagram below. In Fallback mode the card front panel LEDs will also display a repeating cyclic pattern, individually flashing each LED one at a time.

Figure 44: VS906-Fallback mode

Once a card has entered Fallback mode, limited status information is available. However, it should still be possible to report the current Maintenance IP Address and/or configure a new IP address, see below.

Figure 45: VS906-FB Control Settings


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Figure 46: VS906-FB Card Status Summary

9.7 Fallback Recovery Once this information is known (Maintenance IP Address), in order to restore correct operation of the card it should be possible to either:

1. Reload new functional code images Remote Upgrade Procedure 2. Switch card Functional mode using the GUI (Card Functional Mode configuration

parameter) or AEMS command line tools (activeImage command followed by

rebootImage)


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10 Protection Features

10.1 Forward Error Correction (FEC)

Note: FEC is enabled with license option VS906-SW-FEC

The VS906 has built in Forward Error Correction (FEC) functionality designed to provide protection of IP packets through the transport network. With FEC enabled lost packets can be automatically regenerated using additional FEC packets. These FEC packets are generated in accordance with SMPTE2022-1/5. FEC can be enabled per Input channel as a one (Column only) or two (Row and Column) dimensional matrix and is configured in the ‘In x’ configuration menu.

Figure 47: FEC Configuration

10.2 Streaming Intelligent Packet Switching (SIPS)

Note: SIPS is enabled with license option VS906-SW-SIPS

The VS906 has built in Streaming Intelligent Packet Switching (SIPS) which is designed to provide the possibility of network redundancy protection. With SIPS enabled, the transmission module duplicates each audio/data stream, transmitting the Ethernet encapsulated audio or data onto two physical (or virtual) interfaces. These duplicate streams are routed independently through the Ethernet network along diverse paths.

IP/Ethernet

NetworkVS906

S

I

P

SAnalog Audio

AES

MADI

E1

Figure 48: VS906 Diverse Path Transmission


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The receive module buffers both incoming streams, mediating and selecting the most appropriate packets in what is termed active-active merging for use in de-encapsulation. In this way, if one stream is impaired, good packets are delivered via the other stream and a good output stream can always be reconstructed. The combination of diverse path routing and perfect switching provides for the highest possible Quality of Service, effectively minimizing the effects of random packet losses, burst packet losses, losses due to fast re-routes, and link failures.

Figure 49: VS906 Receive SIPS Protection

For any fully seamless protection system to function, the dual media feeds presented for transport needs to be essentially coherent i.e. the same audio/data feed. The VS906 dual media flows can be launched from a single transmit card with the following variants: 1. Identical feeds transmitted out of dual physical network interfaces, with or without VLAN

tags. 2. The same RTP encapsulated media flow with different multicast group addresses

transmitted out of dual physical network interfaces, with or without VLAN tags

3. Identical feeds transmitted out of the same physical network interface, with V-LAN separation

4. The same RTP encapsulated media flow with different multicast group addresses transmitted out of the same physical network interface, with V-LAN tags

The VS906 configuration for the above scenarios is achieved by setting the Network Output Mode configuration item to Stand Alone in the Main tab and the Protection configuration item to Enabled in the In 1 to x tabs (see below).


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Figure 50: VS906 Receive SIPS Protection Input Config

As the A and B flows will typically be routed across network links with different delays, it is necessary for the SIPS module to wait for a period after the first signal is received before it starts outputting data, to ensure that the second signal that is received does not need to be written to the buffer after it is read out. The “SIPS Pre-buffer” configuration item allows this period to be configured to allow the system to be able to compensate for the maximum expected differential latency between the A and B flows, while minimizing the additional delay added to the system.

10.3 Encoder Partner Protection (EPP)

Note: EPP is enabled with license option VS906-SW-EPP

SIPS allows for streams to be replicated in the network and fed to two output cards, giving the maximum redundancy in the network itself. Encoder Partner Protection (EPP) provides a way of generating two "RTP coherent" streams at the source, while still providing protection against the failure of an individual encoder card (hardware redundancy). The EPP concept is that the single transmit card, which on its own is a single point of failure, is replaced by dual transmit cards which are both capable of transmitting data flows into the network. In this scenario one card acts as a Master and the other as the Slave.

Note: The dual transmit cards should be located in separate racks, rooms or even separate locations for true diverse protection.

The cross connection between the two cards can be local (direct) or via a longer Ethernet connection. In normal operation, the Master card sends it’s transmit data feed to network via its network interface A. The Slave card receives the Master card’s feed (from Master card network net interface B into Slave card net interface A) and forwards this feed out its own network net interface B. This connection between the two cards is referred to as the cross strap.


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The Master card transmits on both of its primary and secondary interface. The Slave card monitors the input stream from the Master and the Slave forwards the Master’s stream as its own output on network interface B.

Network Interface A

VS906Analog Audio

AES

MADI

E1

VS906

Master

Slave

Network Interface A

Network Interface B

Network Interface B

Figure 51: VS906 Encoder Partner Protection

The Slave card starts transmitting its own stream (from its input) when: a) the Master fails b) the Slave cards detects a loss of input signal from the Master card c) loss of cross-strap (the link between the Master and Slave cards).

Note: Because switching from master to slave or back again breaks the RTP coherency, this switching is not hitless.

10.3.1 EPP Configuration

To enable the EPP scenario described above, both the Master and Slave card need to be configured as follows. Configuration of the VS906 Master card:

1. Set Network Output Mode set to Master in the Main tab 2. Enable Protection in the In 1 to 8 tabs 3. Enable Partner Encoder Mode by setting this to Active.


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Figure 52: VS906 Partner Protection Master Config

Configuration of the VS906 Slave card:

1. Set Network Output Mode set to Slave in the Main tab 2. Enables Protection in the In 1 to 8 tabs 3. Enables Partner Encoder Mode by setting this to Active

Figure 53: VS906 Partner Protection Slave Config

There are two different configurable Slave modes:

1. Active slave where the slave card is outputting a feed all the time and 2. Passive slave where the slave card only outputs its feed upon the failure of the

master card (whose feed it is monitoring via the cross connect) In addition to the above, there are also a few other basic rules on cross channel configuration that need to be followed in order to ensure the cards behave correctly.

The dual launch addresses need to be decided – unicast or multicast, with or without VLAN tagging

The Master card needs to be configured with these two addresses for flow A and flow B on the given channel input configuration tab

The Slave card needs to be configured with these same two set of addresses

The only difference between the cards configurations is therefore the identification of Master/Slave mode in the Main config tab


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Note: Using EPP both the Master and Slave card have the same configuration except for Network Output Mode (Master/Slave)

The ultimate redundant solution necessitates dual NTE hardware at each end of the path as well as full diverse signal routing through the network. For SIPS to provide fully seamless stream protection at the receive end, the dual network feeds need to be coherent - not only at the audio/data layer but also at the RTP layer, where the top level alignment and integrity analysis is performed. To provide this RTP-layer coherent presentation from the dual encoders, the two physically separate encoder systems can be cross-strapped to allow each unit to receive the feeds being emitted by the other unit. Each Encoder is then able to continually monitor and verify the integrity of the feed from the alternate unit. In this cross-strap mode, one of the transmitter units is nominated by configuration as the Master. As long as the output from this unit has full integrity, both of the units emit this flow as the main feed to the network i.e. the Slave unit receives, checks and forwards out the encapsulated signal from the Master. If the Master unit fails, the Slave unit then immediately puts its own input feed to its output. Similarly, if the Master unit detects its own audio/data input is compromised; it can start outputting the feed from the slave. This protection mechanism for encoder card failure was not synchronous in earlier releases but a new feature, ‘RTP-sync’, allows the Slave Encoder to synchronise its RTP layer to that of the Master.

10.3.2 RTP Sync

The cross connection between the Master and Slave Encoders in EPP mode also ensures that the RTP Sequence number and timestamps in Flow A and Flow B are synchronised. This reduces the output audio disturbances when the Encoders switch from Master to Slave and vice versa.

10.3.3 SSRC Blocking

The RTP packet header contains a field which can identify the source of an IP stream. This field is known as the SSRC (Synchronization source identifier) and uniquely identifies the source of a stream. The synchronization sources (Encoders) within the same RTP session will be unique (based on card serial number). This allows the VS906 Decoder to identify which Encoder (Master or Slave) in an EPP setup a stream has originated from. In normal operation the flows from the Master and Slave will have the same SSRC identifier if the cross connection between the Encoders is present (the VS906 Encoders ensure that the flows are coherent). The flow being transmitted by the Slave card is actually the flow originating from the Master card being sent across the cross connection and will therefore has the same SSRC value. If the RTP SSRC value in one of the flows changes (e.g. if the EPP cross connection is removed) the flow will be blocked by the Decoder (this is known as SSRC blocking). This prevents audio disturbances which can be caused by two incoherent flows. Blocked flows are indicated by a blinking decoder output LED.


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10.3.4 EPP Content Switching

The EPP content switching feature protects against situations where the audio input to one of the partner cards becomes silent while the other card has a normal audio level on its input. This is particularly useful on the Analogue card where there is no concept of input loss (only audio silence) but also protects against scenarios where an upstream AES source becomes muted. Once the inputs have been in this state for longer than the EPP Content Switch Hysteresis persistence time then EPP will switch the selected input to the non-silent source. If both inputs become silent or the active source stops being silent within the hysteresis time then this is treated as part of the program audio and no switching will take place. EPP content switching can be enabled or disabled independently on each input channel.

10.3.5 EPP Error Switching

The EPP error switching feature on the E1 card will allow a channel to switch between the Master and Slave input signals upon detection of AIS (Alarm Indication Signal). Detection of AIS in the input signal will be indicated by the Input AIS Alarm being activated in the Input x Status menu.


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10.4 Output with SIPS protection

The VS906 receiver will perform SIPS packet processing of the two streams it receives when SIPS protection is enabled. SIPS protection is enabled in the Out X channel tab of the Edit Card Configuration menu (see below).

Figure 54: VS906 Output SIPS Protection Config

IP/Ethernet

NetworkVS906

S

I

P

S

VS906

S

I

P

SAnalog Audio

AES

MADI

E1

Analog Audio

AES

MADI

E1

Figure 55: VS906 Diverse Path Transmission with Perfect Packet Switching

IP/Ethernet

Network

VS906Analog Audio

AES

MADI

E1

Analog Audio

AES

MADI

E1

VS906

VS906 VS906Analog Audio

AES

MADI

E1

Master

Slave

Figure 56: VS906 Encoder Partner Protection with perfect packet switching


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10.5 Launch Delay Offset (LDO)

Note: LDO is enabled with license option VS906-SW-LDO

Launch offset is a Nevion-specific technique which allows dual network feeds to be sent with a time delay between the two streams. This allows recovery from coincident network breaks using patented techniques. Launch Delay Offset can be used in transport networks where an automatic protection switch event can cause a 50ms network interruption. By launching the secondary stream (Flow B) delayed by 60ms with respect to the main stream (Flow A), the secondary stream will arrive outside of the 50ms switchover. At the receiver, SIPS technology is used to buffer and realign the two streams. This launch offset is a configurable value from 0 to 250ms and can be located in the In 1 to 8 tabs. The figure below defines the launch offset between VS906 Flow A and Flow B outputs.

Figure 57: VS906 Flow B Launch Delay Configuration


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11 IP Specific Configuration

11.1 VLAN Tagging At the VS906, the IP packets from each network port can be tagged with a user-defined VLAN ID as defined by IEEE802.1Q. The valid values for VLAN ID are from 0 to 4094. Class of Service (CoS) is also supported by the VLAN Priority Code Point (PCP) value in the Ethernet frame header when using VLAN tagged frames as defined by IEEE802.1P. Valid values are from 0 to 7, where 0 is lowest priority and 7 the highest. 7.

Figure 58: VS906 VLAN Tagging of IP packets

Similarly at the VS906 receiver side, the VLAN tag of IP packets received can be removed if the VLAN ID matches the VLAN ID assigned to the transmitter side.

Figure 59: VS906 VLAN Un-tagging of IP packets


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11.2 TOS/DSCP Marking The VS906 can mark the TOS/DSCP field in the IP header of locally generated video over IP packets using a user-defined value. This parameter is used for Class-of-Service prioritisation in a Differentiated Services (DiffServ) network environment. Use of TOS/DSCP depends on routers honouring this field. The browser shows the 6-bit DSCP and 2-bit ECN (or CU) fields as described in RFC2474. All of the 8 bits can be defined by the user.

0 3 64 521 7

TOS or DSCP bits ECN or CU bits

Figure 60: TOS/DSCP Fields

A number of predefined traffic class values are available using different DSCPs. These are defined as:

Default (DF) Expedited Forwarding (EF) Assured Forwarding (AF) and Class Selector (CS).

These are configured using the TOS/DSCP + ECN field. A customer custom value can also be defined by selecting ‘Custom’ in the TOS/DSCP + ECN field and then configuring a 8-bit value in the TOS/DSCP Custom + ECN field using the format shown in Figure 60: TOS/DSCP Fields above.

Figure 61: VS906 TOS/DSCP Settings

11.3 Network Jitter Tolerance The VS906 can tolerate network-induced jitter without any degradation in the quality of its data output. The jitter tolerance is numerically equal to the packet delay through the VS906 Decoder. In applications where excessive packet delay is not desirable, the user can configure the Network Jitter Tolerance to accommodate the maximum amount of packet jitter to be expected in the network and at the same time limit the amount of packet delay. The Network Jitter Tolerance setting in units of millisecond defines both the maximum IP packet jitter tolerance and the maximum packet delay of the VS906 decoder. The figure below shows the jitter tolerance for an output set to 50ms. The Network Jitter Tolerance can be individually defined for each output.

Figure 62: Network Jitter Tolerance


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11.4 Transmit Block Size

The VS906 support 4ms and 1ms block sizes. For audio transport on the VS906, linear PCM encapsulation according to the EBU standard 3326 is used which defines a standard block size and therefore an encapsulation latency of 4ms. This gives a transmission rate of 250 packets per second (pps). The minimum total delay in this mode is 16ms end to end (excluding network delay). An alternative mode supported on the VS906 is a 1ms block size, which results in a total minimum delay of 4ms (with 1000pps). With realistic PDV and SIPS buffer settings, the real-world end-to-end figure will be likely higher than this.

Figure 63: VS906 Transmit Block Size


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12 Remote Upgrade Procedure

The first stage of any upgrade procedure is to transfer the upgrade file or package to the chassis AEMS card. Upgrades for VS906 may be distributed in one of three ways:

A. As a combined package (.tgz file) intended for upgrading all images over IP B. As individual images (.bin.gz files) which can be upgraded over IP or the in-chassis

bus using the AEMS built in upgrade tools C. As a package intended for deployment from VideoIPath

The last of these will not be described here, contact Nevion Support if you need further information on this. Copy upgrade image/license file to AEMS /tmp folder

1. Ensure there are no other files except default 22 & start_ok in the /tmp folder

2. Use FTP to copy the new image to the /tmp folder.

3. Start a FTP session (ftp <IP address of aems>).

4. Enter ftp user name (root) and password (qazxsw).

5. Very Important > Select binary transfer mode (bin).

6. Change to /tmp folder (cd /tmp)

7. Use lcd <path> to change the local directory to the directory from where you want to upload files e.g. (lcd c:\)

8. Transfer the upgrade image to the /tmp folder (put <filename>).

9. Close the FTP session (bye) after the transfer has been completed.

Upgrade Images

The VS906 has seven images, #0 to #6. Image #1 is the main operational image, Image #0 is the 'fallback' image which is used only for programming, or if Image #1 becomes corrupted. The following steps will upload the main code to image #1 the factory code to image #0 and the test code to image #6.

If you have been sent a combined upgrade package (Option A above)

The procedure for applying the upgrade is as follows:

In the following, the filename is an example only & is referred to as vs906e1_vX.Y. Replace e1_vX.Y with the current version number.

1. Connect the VS906 front Ethernet port to the AEMS front Ethernet port or Ethernet switch & assign a valid IP address to the VS906 Maintenance IP Address, with the same network as the AEMS card

2. Log into AEMS via Telnet or SSH (user = anms, password = password)

3. Become the superuser using su (password = qazxsw).


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4. Change directory to /tmp the location where the code image was transferred using FTP. cd /tmp

5. Unpack the TGZ image file. This step has to be done only once for every new code release. It will create a directory in the aems home directory (persistent). tar zxf /tmp/vs906e1_vX.Y.tgz

NOTE: The unpacking of the file will take about 4 minutes.

6. Delete the .tgz file to save on memory: rm vs906e1_vX.Y.tgz

7. Change into the newly created directory: cd vs906e1_vX.Y

8. Upload code to a VS906 card (example IP 192.168.211.139). NOTE: Ignore messages about rebooting the card during the installation. The reboots will be handled automatically. ./vs906_upgrade.sh 192.168.211.139

The Update script will update the code automatically in three steps. First it will update the main code in image 1, then it will update the factory code in image 0 if necessary and then it will update the test code in image 6 if necessary. All together this will take about 10 minutes per card. If the update is successful the script should exit and print the following message: Upgrade Successful

9. Repeat step 5 to program other VS906 cards

10. Delete the upgrade files:

cd /tmp

rm –rf vs906e1_vX.Y

11. Type exit twice to log out

Upgrade complete


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If you have individual upgrade files (Option B above)

The procedure for applying the upgrade is as follows:

(In the following, the filename is an example only, the filename for the upgrade being installed should be used instead of vs906e1_vX.Y.bin where appropriate)

1. Decide whether you will be upgrading via IP (approximately 5 minutes per image, but physical access to the card or a pre-configured in-band management network required) or via the in-chassis bus (approximately 25 minutes per image, but no additional connectivity required)

Note: Upgrading using IP is strongly recommended as this is a much quicker process

2. If upgrading over IP, connect the VS906 front Ethernet port to the AEMS front Ethernet port or Ethernet switch & assign a valid IP address to the VS906 Maintenance IP Address, with the same network as the AEMS card. Jump to step 4 below.

3. If upgrading over the in chassis bus, determine the slot number of the card to be upgraded.

4. Select an appropriate image bank to install the image into, using the list on the previous page for guidance. It is possible to install images into banks other than the recommended list, which can be useful to allow fast switching between different versions of code.

5. Log into AEMS via telnet or SSH (user = anms, password = password)

6. Become the superuser using su (password = qazxsw).

7. Change directory to /tmp the location where the code image was transferred using FTP. cd /tmp

8. If the upgrade file is zipped, pack the .bin.gz image file: gunzip vs906e1_vX.Y.bin.gz

9. Use the listImages or listImages_udp command to determine the current content of each image bank.

Example of in-chassis upgrade command: listImages 3

Example of Ethernet upgrade command (example Maintenance IP = 192.168.100.100): listImages_udp 192.168.100.100

10. Use the loadImage or loadImage_udp command to load the file to the card.

Each command takes three parameters. The loadImage command is for upgrading using the in chassis bus, and takes the

slot number as the first parameter.


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The loadImage_udp command is for upgrading via Ethernet, and takes the IP

address of the card as the first parameter. Both commands take the image bank as the second parameter, and the filename as the third parameter. Example of in-chassis upgrade command: loadImage 3 1 vs906e1_vX.Y.bin

Example of Ethernet upgrade command: loadImage_udp 192.168.100.100 1 vs906e1_vX.Y.bin

Both the above commands will load the file “vs906e1_vX.Y.bin” to image bank 1.

11. If you have more than one card to upgrade, repeat step 8 for the additional slot numbers or IP addresses.

12. If you have more than one image file to load, repeat steps 7 and 8 for the additional images. Note that if you have a lot of image files you may have to delete the earlier ones to create space on the AEMS to unpack the later ones.

13. Delete the upgrade files when all work is completed

14. The current active image (the code image the card will boot from on startup) is marked with an ‘*’ (asterisk) when the listImages or listImages_udp

command is executed.

To change the active image use the activeImage or activeImage_udp

command. Each command takes two parameters. The activeImage command is for activating images using the in chassis bus, and

takes the slot number as the first parameter. The activeImage_udp command is for activating images via Ethernet, and takes

the IP address of the card as the first parameter. Both commands take the image bank as the second parameter. Example of in-chassis upgrade command: activeImage 3 1

Example of Ethernet upgrade command: activeImage_udp 192.168.100.100 1

Both the above commands will activate image bank 1.

15. The VS906 card uses the active image on startup. The card reboots when the rebootImage or rebootImage_udp command is executed.

To reboot the card use the rebootImage or rebootImage_udp command. Each

command takes one parameter. The rebootImage command is for rebooting the card using the in chassis bus, and

takes the slot number as the parameter. The rebootImage_udp command is for rebooting the card via Ethernet, and takes

the IP address of the card as the parameter. Example of in-chassis upgrade command: rebootImage 3

Example of Ethernet upgrade command: rebootImage_udp 192.168.100.100

16. Type exit twice to log out

Upgrade complete


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13 License File Installation

These installation instructions explain how to install a license file onto a VS906 card using the tools built into AEMS V3.20 or later.

To install the license over UDP, AEMS V4.3 or later is required. Given the small size of the license files, there is generally no strong reason to use UDP for the installation process.

1. Transfer the license key to the /tmp directory on the AEMS card for the chassis containing the card to have the license installed, using FTP, SCP or SFTP (see Remote Upgrade Procedure detailed instructions on FTP transfer) username: anms

password: password

2. Telnet or SSH to the AEMS using the same credential as above

3. cd to /tmp directory, the location where the license file was transferred using FTP.

cd /tmp

4. Verify that the card has been correctly detected, and if any licenses are already

installed on the card, using either the in chassis bus, or over UDP. Example in-chassis upgrade command listLicense <slot_number>

or Example Ethernet upgrade command listLicense_udp <maintenance_IP_address>

The card should respond with at least: Total available Licenses = 0

If, instead, it responds with either “Error -- card does not support licenses” or “Error -- I2C communication error” verify that the you have specified the correct slot number, and that the card installed is running a version of code that supports license installation (V2.1 is the first VS906-E1 and V1.4 is the first VS906-DA/-AA firmware release that supports licensing)

5. Load the license to the card using the loadLicense command. Each command

takes three parameters. The loadLicense command is for upgrading using the in chassis bus, and takes

the slot number as the first parameter. The loadLicense_udp command is for upgrading via Ethernet, and takes the IP

address of the card as the first parameter. Both commands take the filename as the third parameter. Example in-chassis upgrade command loadLicense <slot_number> <license_filename>

or Example Ethernet upgrade command loadLicense_udp <maintenance IP address> <license_filename>

6. Re-run the listLicense command to verify that the card now shows the installed

license, for example:


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Total available Licenses = 1 VS906_900089_Lic_20140116

7. If the incorrect license file was loaded to a card it can be removed using the

removeLicense command:

removeLicense <slot_number> <license_number>

(license number is as shown by listLicense command)

8. A final license tool is showLicense command, which can display a license installed

on a card. In AEMS V4.3 and above, this tool has an option “-w” which displays the license with whitespace, which is recommended, as it makes it more readable. The usage is

showLicense -w <slot_number> <license_number>

(license number is as shown by listLicense)


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14 Maintenance and Storage

14.1 Maintenance No regular maintenance is required. Care however should be taken to ensure that all connectors are kept clean and free from contamination of any kind. This is especially important in fiber optic equipment where cleanliness of optical connections is critical to performance.

14.2 Storage If the equipment is not to be used for an extended period, it is recommended the whole unit be placed in a sealed plastic bag to prevent dust contamination. In areas of high humidity, a suitably sized bag of silica gel should be included to deter corrosion. Where individual circuit cards are stored, they should be placed in antistatic bags. Proper antistatic procedures should be followed when inserting or removing cards from these bags.

14.3 Operational Safety

WARNING

Operation of electronic equipment involves the use of voltages and currents that may be dangerous to human life. Note that under certain conditions dangerous potentials may exist in some circuits when power controls are in the OFF position. Maintenance personnel should observe all safety regulations.

Do not make any adjustments inside equipment with power ON unless proper precautions are observed. All internal adjustments should only be made by suitably qualified personnel. All operational adjustments are available externally without the need for removing covers or use of extender cards.


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Appendix A - Glossary

1000Base-T

The term for the electrical Gigabit Ethernet interface. This is the most common interface for Gigabit Ethernet. Most Gigabit-enabled PCs and equipment support this interface.

3G-SDI 3Gbit High Definition - Serial Digital Interface. 3G-SDI, consisting of a single 2.970Gbit/s serial link, is standardized in SMPTE 424M that can replace the dual link HD-SDI.

AES AES3 is the standard used for the transport of digital audio signals between professional audio devices. It is also known as AES/EBU and is published by the Audio Engineering Society (AES). It is able to carry two channels of PCM audio over several different transmission mediums including balanced and unbalanced lines and optical fiber.

ARP Address Resolution Protocol. A protocol used to “resolve” IP addresses into underlying Ethernet MAC addresses.

CRC Cycle Redundancy Checking. Used to check if data is error free in SDI signals.

DiffServ Differentiated Services. A mechanism used on layer 3 - e.g. the IP layer - to differentiate between traffic of various types. DiffServ is based on the ToS field and provides a mechanism for the network to give e.g. video traffic higher priority than other traffic (for example Internet traffic).

DSCP Differentiated Services Code Point. A value assigned in the IP header and used for Class-of-Service prioritisation in a DiffServ domain.

DVB Digital Video Broadcasting. The European consortium defining standards for transmission of digital TV broadcasts, primarily in Europe.

DVB ASI Digital Video Broadcasting Asynchronous Serial Interface. A common physical interface for transmission of MPEG2 Transport Streams (i.e. MPEG2-compressed video) over a serial interface, typically coaxial cables.

EDH Error Detection and Handling. Used to check if data is error free.

Ethernet Originally a 10 Mbit/s shared medium network type developed by Xerox. Later transformed into an official standard. Nowadays, most Ethernet networks are based on full duplex connections over twisted pair cables. Ethernet switches in the network take care of routing Ethernet frames between nodes. The speeds now supported are 10 Mbit/s, 100 Mbit/s and 1000 Mbit/s. 10Gigabit/s Ethernet networks are now emerging.

FEC Forward Error Correction. A mechanism to protect data transmission by adding redundant information. Increasing the amount of redundant data will enable the receiver to correct more errors (i.e. regenerate lost packets) in case of network data loss.

http://en.wikipedia.org/wiki/Digital_audio

http://en.wikipedia.org/wiki/Professional_audio

http://en.wikipedia.org/wiki/Audio_Engineering_Society

http://en.wikipedia.org/wiki/PCM_audio

http://en.wikipedia.org/wiki/Transmission_medium

http://en.wikipedia.org/wiki/Balanced_line

http://en.wikipedia.org/wiki/Unbalanced_line

http://en.wikipedia.org/wiki/Optical_fiber


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HD-SDI High Definition - Serial Digital Interface. Also known as ANSI/SMPTE SMPTE 292M-1998. A specification describing how to digitize and transmit uncompressed high definition video signals. The typical bit rate of an HD-SDI signal is 1485 Mbit/s.

HDTV High Definition Television. Television standard(s) that provide(s) improved picture resolution, horizontally and vertically, giving clearer and more detailed TV pictures.

HTTP HyperText Transfer Protocol. The fundamental protocol used on the Internet for transmission of WEB pages and other data between servers and PCs.

ICMP Internet Control Message Protocol. ICMP messages, delivered in IP packets, are used for out-of-band messages related to network operation.

IGMP Internet Group Management Protocol. IGMP is a protocol used to manage multicast on the Internet. For a host (receiver unit) to receive a multicast, it needs to transmit IGMP “join” messages in the right format. Three versions exist. IGMPv2 is commonly used today, but IGMPv3 is becoming more common, and allows for source specific multicasting (SSM).

JPEG2000 A wavelet-based image compression standard. It was created by the Joint Photographic Experts Group committee with the intention to supersede their original discrete cosine transform-based JPEG standard. JPEG2000 can operate at higher compression ratios without generating the characteristic ’blocky and blurry’ artefacts of the original DCT-based JPEG standard.

MPEG-2 Moving Picture Experts Group 2. The compression standard used today on most satellite and cable TV digital broadcasts. MPEG-2 also includes standardisation of data transport of video using other compression techniques, and other types of information.

MPLS Multi-protocol Label Switching. A Quality of Service mechanism for IP networks that allows IP packets to flow along a predefined path in a network, improving the reliability and robustness of the transmission.

MPTS Multi Program Transport Stream. MPEG2 transport stream that carry multiple TV/Radio services.

Multicast An IP mechanism that allows transmission of data to multiple receivers. A multicast can also have several transmit sources simultaneously. In video applications, multicast is typically used to distribute a video signal from a central source to multiple destinations.

NMS Network Management System. A system used to supervise elements in an IP network. When a device reports an alarm, the alarm will be collected by the NMS and reported to the operator. NMS systems typically collect valuable statistics information about the network performance and can provide early warning to the operator of network issues.

PAT Program Association Table. Holds the location of the corresponding PMTs.


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PMT Program Map Table. Identifies and contains the locations of the streams that make up each service.

PCR Program Clock Reference. A sampled 27 MHz video clock used in MPEG2 Transport Streams. The primary purpose of the PCR is clock synchronisation of transmitter and receivers.

PDV Packet Delay Variation is the difference in end-to-end one-way delay between selected packets in a flow with any lost packets being ignored (RFC3393).

PID Packet Identifier. An 11 bit field in an MPEG2 transport packet defining a logical channel. 8192 unique logical channels may coexist in one network.

PSI/SI Program Specific Information / Service Information. These are information tables (metadata) carried in MPEG2 transport streams in addition to video and audio. The information carried is typically service/program IDs, program names and conditional access information.

QoS Quality of Service. A common term for a set of parameters describing the quality of an IP network: Throughput, availability, delay, jitter and packet loss.

RIP2 Routing Information Protocol v2. A protocol used between network routers to exchange routing tables and information.

RSVP ReSerVation Protocol. A Quality-of-service oriented protocol used by network elements to reserve capacity in an IP network before a transmission session takes place.

RTP Real-time Transfer Protocol. A protocol designed for transmission of real-time data like video and audio over IP networks.

SD-SDI Standard Definition Serial Digital Interface. Also known as ANSI/SMPTE 259M-1997 or ITU-R BT.656. A specification describing how to digitize and transmit uncompressed standard definition video signals. The typical bit rate of an SD-SDI signal is 270Mbit/s.

SDI Serial Digital Interface. Used to describe both HD-SDI and SD-SDI input and output ports.

SDTI Serial Data Transport Interface. A mechanism that allows transmission of various types of data over an SDI signal. This may be one or more compressed video signals or other proprietary data types. The advantage of SDTI is that existing SDI transmission infrastructure can be used to transport other types of data.

SDTV Standard Definition Television. The normal television standard/resolution in use today.

SFP Small Form-factor Pluggable module. A standardized mechanism to allow usage of various electrical or optical interfaces to provide Gigabit Ethernet. Several types of SFP modules exist: Single mode fibre modules for long-distance transmission and multi-mode fibre modules for shorter distances. SFP is also known as “mini-GBIC”.

http://en.wikipedia.org/wiki/End-to-end_principle

http://en.wikipedia.org/wiki/One-way_delay

http://en.wikipedia.org/wiki/Flow_%28computer_networking%29

http://en.wikipedia.org/wiki/Packet_loss


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SNMP Simple Network Management Protocol. A fundamental and simple protocol for management of network elements. Commonly used by Network Management Systems and other applications.

SNTP Simple Network Time Protocol is an Internet protocol used to synchronize the system clocks of computers to a time reference. It is a simplified version of the protocol NTP protocol which is overcomplicated for many applications.

SPTS Single Program Transport Stream. MPEG2 Transport Stream that contains a single program/service.

SSRC Synchronization source. Synchronization source identifier uniquely identifies the source of a stream. The synchronization sources within the same RTP session will be unique

TCP Transmission Control Protocol. A “reliable” protocol above the IP layer that provides automatic retransmission of datagrams in case of packet loss, making it very robust and tolerant against network errors. TCP is the fundamental protocol used in the Internet for WEB traffic (HTTP protocol). TCP is indented for point-to-point communication; TCP cannot be used for communication from one node to many others. TCP/IP A common term used for the Internet protocol suite, i.e. the set of protocols needed for fundamental IP network access: TCP, IP, UDP, ARP etc.

ToS Type of Service. This is a field in the header of IP datagrams to provide various service types. It has now been “taken over” and reused by DiffServ.

Transport Stream (TS) The common name for an MPEG2 Transport Stream. A bit stream used to carry a multiplex of packets, each identified by a unique Packet Identifier (PID) defining a logical channel. A PID stream typically represents a video or an audio service.

UDP User Datagram Protocol. An “unreliable” protocol above the IP layer that also provides port multiplexing. UDP allows transmission of IP data packets to several receiving processes in the same unit/device. UDP is used in multicast applications.

Unicast Point-to-point connection. In this mode, a transmit node sends e.g. video data direct to a unique destination address.

VLAN Virtual Local Area Network, a network of units that behave as if they are connected to the same wire even though they may be physically located on different segments of a LAN.

XML eXtensible Markup Language. A common self-describing text-based data format. Used for many purposes: Meta-data, configuration files, documents, etc. The readability of the format has made it very popular and is now the basis of many types of WEB services.


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General environmental requirements for Nevion equipment

1. The equipment will meet the guaranteed performance specification under the following environmental conditions:

- Operating room temperature range: 0°C to 50°C - Operating relative humidity range: <85% (non-condensing) 2. The equipment will operate without damage under the following environmental

conditions: - Temperature range: 0°C to 50°C - Relative humidity range: <85% (non-condensing)


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Product Warranty

The warranty terms and conditions for the product(s) covered by this manual follow the General Sales Conditions by Nevion, which are available on the company web site:

www.nevion.com


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Appendix A Materials declaration and recycling information

A.1 Materials declaration For product sold into China after 1st March 2007, we comply with the “Administrative Measure on the Control of Pollution by Electronic Information Products”. In the first stage of this legislation, content of six hazardous materials has to be declared. The table below shows the required information.

組成名稱

Part Name

Toxic or hazardous substances and elements

鉛

Lead (Pb)

汞

Mercury (Hg)

镉

Cadmium (Cd)

六价铬

Hexavalent Chromium

(Cr(VI))

多溴联苯

Polybrominated biphenyls

(PBB)

多溴二苯醚

Polybrominated diphenyl ethers

(PBDE)

VS906 (all versions) O O O O O O

VS134 PSU O O O O O O

O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement in SJ/T11363-2006. X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in SJ/T11363-2006.

This is indicated by the product marking:

A.2 Recycling information Nevion provides assistance to customers and recyclers through our web site http://www.nevion.com/. Please contact Nevion’s Customer Support for assistance with recycling if this site does not show the information you require.

Where it is not possible to return the product to Nevion or its agents for recycling, the following general information may be of assistance:

Before attempting disassembly, ensure the product is completely disconnected from power and signal connections.

All major parts are marked or labelled to show their material content.

Depending on the date of manufacture, this product may contain lead in solder.

Some circuit boards may contain battery-backed memory devices.

http://www.nevion.com/

VS906 AA / VS906 DA / VS906 E1 - Nevion · 2020. 3. 4. · VS906-AA / VS906-DA / VS906-E1 Rev. D...

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