Web: ......Web: IRT 3000-dvj.ib.rev2.doc Page 2 of 9 03/11/2008 IRT Eurocard Type DVJ-3000 270...
Transcript of Web: ......Web: IRT 3000-dvj.ib.rev2.doc Page 2 of 9 03/11/2008 IRT Eurocard Type DVJ-3000 270...
3000-dvj.ib.rev2.doc Page 1 of 9 03/11/2008
IRT Eurocard
Type DVJ-3000
270 Mb/s SDI/ASI De-Jitteriser
Designed and manufactured in Australia
IRT can be found on the Internet at: http://www.irtelectronics.com
I R T Electronics Pty Ltd A.B.N. 35 000 832 575 26 Hotham Parade, ARTARMON N.S.W. 2064 AUSTRALIA National: Phone: (02) 9439 3744 Fax: (02) 9439 7439 International: +61 2 9439 3744 +61 2 9439 7439 Email: [email protected] Web: www.irtelectronics.com
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3000-dvj.ib.rev2.doc Page 2 of 9 03/11/2008
IRT Eurocard
Type DVJ-3000
270 Mb/s SDI/ASI De-Jitteriser
Instruction Book
Table of Contents Section Page Operational Safety 2 General Description 3 Technical Specifications 4 Circuit Description 5 Installation 6
Front and rear layouts 7 Maintenance & Storage 8 Warranty & Service 8
Equipment return 8 Drawing List Index 9
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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3000-dvj.ib.rev2.doc Page 3 of 9 03/11/2008
General Description
The DVJ-3000 is designed to reduce the jitter in 270 Mb/s SDI or ASI signals. Due to the fact that true loop through inputs are not normally available in most digital equipment, the signal is frequently subject to automatic equalisation and reclocking. Together with noise pickup this leads to the inevitable increase in jitter in the signal. The only successful way to overcome this is to regenerate the signal with a new clock signal referenced to the long-term data rate. The DVJ-3000 provides this solution with a Voltage Controlled Crystal Oscillator (VCXO) operating in conjunction with a First In First Out (FIFO) memory to provide a constant output data rate, which removes any short-term data rate errors. Up to twelve DVJ-3000’s or other Eurocard modules may be housed in one 3 RU frame. The DVJ-3000 supports redundant power supply inputs. For input jitter within this mask, Output jitter < 0.125 UI. Features:
• Reduces jitter build up in distribution chains • Suitable for 270 Mb/s SDI or ASI signals • Automatic input equalisation to > 300 metres of Belden 8281 or equiv. cable • Alarm output on loss of signal input • Front panel output monitoring
VCXO&LEDs
ALARMS CONTROLLERLOGIC
INPUTEQUALISER PARALLEL
SERIAL/ FIFO SERIAL&
OUTPUTS
PARALLEL/
INPUTSDI/ASI
OUTPUTSDI/ASI
SDI/ASIFRONT PANEL
DVJ-3000 SDI/ASI De-Jitteriser block diagram
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3000-dvj.ib.rev2.doc Page 4 of 9 03/11/2008
Technical Specifications DVJ-3000
Input: Type SDI/ASI. Number 1. Impedance 75 Ω. Return loss >15 dB 5 MHz to 270 MHz. Equalisation Automatic, better than 300 metres at 270 Mb/s for Belden 8281 or
equivalent cable. Outputs: Number 1 SDI or ASI plus one SDI / ASI front panel monitoring
output. Type Reclocked/De-jittered. Level 800 mV ±10% into 75 Ω. Impedance 75 Ω. Return loss >15 dB 5 MHz to 270 MHz.
Performance: Cable compensation Automatic, better than 300 metres at 270 Mb/s for Belden 8281
or equivalent cable. Reclocking 270 Mb/s crystal locked. Insertion Delay <20 µs
Connectors: BNC 75 Ohms.
Indicators: Power LED (green) for +5 V. Signal present LED (green).
Alarm: Signal loss Contact closure. N/O, N/C & Common pins available.
Power requirement: Voltage 28 Vac CT (14-0-14) or ±16 Vdc Consumption 4 VA (<120 mA).
Other: Temperature range 0 - 50° C ambient. Mechanical Suitable for mounting in IRT 19" rack chassis with input,
output and power connections on the rear panel. Finish: Front panel Grey enamel, silk-screened black lettering & red IRT logo. Rear assembly Detachable silk-screened PCB with direct mount connectors to
Eurocard and external signals. Dimensions 6 HP x 3 U x 220 mm IRT Eurocard. Standard accessories (supplied with module) Rear connector assembly.
Due to our policy of continuing development, these specifications are subject to change without notice.
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3000-dvj.ib.rev2.doc Page 5 of 9 03/11/2008
Circuit Description Input 270 Mb/s SDI or ASI signal is fed from the input 75Ω BNC connector on the rear connector assembly to an equaliser chip, IC12. Output from this chip feeds a de-serialiser chip, IC8, where the input serial stream is converted to parallel form for inputting to IC7, which is a field Programmable Gate Array (FPGA). The FPGA performs the majority of the processing of the signal and is too complicated to describe in detail. Its programming is held in IC9. Re-clocking is provided by a 27 MHz VCXO, X01, which is controlled by IC7 through interface IC5. The re-clocked de-jitterised signal is fed out of the FPGA in parallel form to IC11, which acts as a parallel to serial converter. This serialised signal then feeds an output driver chip, IC14, which outputs the de-jitterised signal to 75Ω BNC connectors located on the rear connector assembly and the front panel. Power to the unit is via either ±16 Vdc or 14-0-14 Vac. This is rectified by diode bridges DB1 and DB2 and rectified by voltage regulators IC2, IC3 and IC4.
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3000-dvj.ib.rev2.doc Page 6 of 9 03/11/2008
Installation Pre-installation: Handling: This equipment may contain or be connected to static sensitive devices and proper static free handling precautions should be observed. 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. Power: AC mains supply: Ensure that operating voltage of unit and local supply voltage match and that correct rating
fuse is installed for local supply. DC supply: Ensure that the correct polarity is observed and that DC supply voltage is maintained within
the operating range specified. Earthing: The earth path is dependent on the type of frame selected. In every case particular care should be taken to ensure that the frame is connected to earth for safety reasons. See frame manual for details. Signal earth: For safety reasons a connection is made between signal earth and chassis earth. No attempt should be made to break this connection. Installation in frame or chassis: See details in separate manual for selected frame type. Input / Output connections: Input and output ASI or SDI connections are via 75Ω BNC connectors located on the rear connector assembly. Alarm Output connection: A relay alarm output is provided for loss of signal or loss of power via a four pin phoenix connector on the rear connector assembly. Normally open (N/O), Normally Closed (N/C) and two Common (COM) connections are provided. IR
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3000-dvj.ib.rev2.doc Page 7 of 9 03/11/2008
SIGNALPRESENT
OUTPUT MON
DC
DVJ-3000
N140
Front & rear panel connector diagrams The following front panel and rear assembly drawings are not to scale and are intended to show connection order and approximate layout only.
INPUT
PL6
SK1
PL2
SK3
1-COM 2-COM 3-N/C 4-N/O
OUTPUT
1
2
3
4
PL1
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3000-dvj.ib.rev2.doc Page 8 of 9 03/11/2008
Maintenance & storage 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 fibre optic equipment where cleanliness of optical connections is critical to performance. 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.
Warranty & Service
Equipment is covered by a limited warranty period of three years from date of first delivery unless contrary conditions apply under a particular contract of supply. For situations when “No Fault Found” for repairs, a minimum charge of 1 hour’s labour, at IRT’s current labour charge rate, will apply, whether the equipment is within the warranty period or not. Equipment warranty is limited to faults attributable to defects in original design or manufacture. Warranty on components shall be extended by IRT only to the extent obtainable from the component supplier. Equipment return: Before arranging service, ensure that the fault is in the unit to be serviced and not in associated equipment. If possible, confirm this by substitution. Before returning equipment contact should be made with IRT or your local agent to determine whether the equipment can be serviced in the field or should be returned for repair. The equipment should be properly packed for return observing antistatic procedures. The following information should accompany the unit to be returned:
1. A fault report should be included indicating the nature of the fault 2. The operating conditions under which the fault initially occurred. 3. Any additional information, which may be of assistance in fault location and remedy. 4. A contact name and telephone and fax numbers. 5. Details of payment method for items not covered by warranty. 6. Full return address. 7. For situations when “No Fault Found” for repairs, a minimum charge of 1 hour’s labour will apply,
whether the equipment is within the warranty period or not. Contact IRT for current hourly rate. Please note that all freight charges are the responsibility of the customer. The equipment should be returned to the agent who originally supplied the equipment or, where this is not possible, to IRT direct as follows.
Equipment Service IRT Electronics Pty Ltd 26 Hotham Parade ARTARMON N.S.W. 2064 AUSTRALIA Phone: 61 2 9439 3744 Fax: 61 2 9439 7439 Email: [email protected]
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3000-dvj.ib.rev2.doc Page 9 of 9 03/11/2008
Drawing List Index Drawing # Sheet # Description 804453 1 DVJ-3000 270 Mbit Jitter Eliminator circuit diagram – sheet 1. 804453 2 DVJ-3000 270 Mbit Jitter Eliminator circuit diagram – sheet 2. 804453 3 DVJ-3000 270 Mbit Jitter Eliminator circuit diagram – sheet 3.
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GN
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GN
D
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10n
C82
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icatio
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Title
SCAL
E
SIZE
Shee
tD
RA
WN
CH
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DEN
G. A
PP.
Rev
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n:
DO
NO
T C
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NO
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TO
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TYW
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OU
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of2
IRT
Elec
troni
cs P
ty. L
td.
Dra
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CO
PYR
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T
ARTA
RM
ON
NSW
AU
STR
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4
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N.T
.S.
3
DVJ
-300
0
8044
53
Dat
e:3
9-Ju
l-200
2
K.N
.
1 29-09-1998
VCC
1
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C70
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C64
10u
L6 470nH
C63
100n
L8 15nH
GN
D
GN
D
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VCC
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GN
D
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VCC
CAR
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DO
UT
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N
C28
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REG
GN
D
CO
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VCC
14
GN
D7
XO1
VCXO
VCO
OU
T
GN
D
R6
2M2
C27100nF
VCONTROL
C17
100n
C2410n
C2310u
5VR
EG
C10100n
GN
D
51 10
3 8
RELAY1
RELAY-SPCO
VCC
TR3
BSS123
GN
D
RELAY
D2BAV99
REL
AY
N/C
N/O
CO
M
C810uL2 470nH
VCC
1 2 3 4 5 6 7 8910111213141516
SW1
N/C
RN1
N/C
GN
D8
G5
nQ7
H6
F4
E3
CLO
CK
2
nLO
AD1
Q9
SA10
A11
B12
C13
D14
CLK
INH
15
VCC
16
IC1
N/C
SCLK
SDA
SLE
GN
D
C1N/C
GN
D
VCC
VCC
GN
D
BER
SWH
SWG
SWF
SWE
SWD
SWC
SWB
SWA
BER
SWA
SWB
SWC
SWD
SWE
SWF
SWG
SWH
LK1
270M
BIT
JITT
ER E
LIM
INAT
OR
C22100nF
C13100n
5VR
EG
GN
DVCONT
VCO
NT
NC
1
IN2
GN
D3
OU
T4
VCC
5IC5
74HCT1G04
R12
22R
C4947p
GN
D
R3010k
R314M7
R324M7
IRT C
ommun
icatio
ns
www.irtco
mmunica
tions
.com
Title
SCAL
E
SIZE
Shee
tD
RA
WN
CH
ECKE
DEN
G. A
PP.
Rev
isio
n:
DO
NO
T C
OPY
NO
RD
ISC
LOSE
TO
AN
YTH
IRD
PAR
TYW
ITH
OU
T W
RIT
TEN
CO
NSE
NT
of3
IRT
Elec
troni
cs P
ty. L
td.
Dra
win
g N
o.
CO
PYR
IGH
T
ARTA
RM
ON
NSW
AU
STR
ALIA
206
4
A3
N.T
.S.
3
DVJ
-300
0
8044
53
Dat
e:3
9-Ju
l-200
2
SK1
1 2 3 4
PL1
CO
N4X
1
1 2 3
J1 CO
N3X
1
1A 1B 2A 2B 3A 3B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 10A
10B
11A
11B
12A
12B
13A
13B
14A
14B
15A
15B
16A
16B
17A
17B
18A
18B
19A
19B
20A
20B
21A
21B
22A
22B
23A
23B
24A
24B
25A
25B
26A
26B
27A
27B
28A
28B
29A
29B
30A
30B
31A
31B
32A
32B
M2
M1
SK2
DIN
64F
GN
DR
SK3
GN
DR
GN
DR
1 2 3 4 5 6 7 8
PL3
N/C
1 2 3 4 5 6 7 8
PL2
N/C
GN
DR
1 - C
OM
2 - C
OM
3 - N
/C4
- N/O
TXA
TXB
RX
AR
XB RA
L2
15nH
RA
L1
22nH
270M
BIT
JITT
ER E
LIM
INAT
OR
IRT C
ommun
icatio
ns
www.irtco
mmunica
tions
.com