Download User Manual - IRT Communications

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
IRT Eurocard Type
DVA-3007
270 Mb/s ASI/SDI 8 O/P
Reclocking Distribution Amplifier
Designed and manufactured in Australia
IRT can be found on the Internet at:
http://www.irtelectronics.com
3007-dva.ib.doc
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26/02/2003
DVA-3007
270 Mb/s ASI/SDI 8 O/P
Reclocking Distribution Amplifier
Instruction Manual
Table of Contents
Section
Page
Operational safety
Description
Specifications
Technical Description
Installation
Front & rear panel connector diagrams
Maintenance & storage
Warranty and service
Equipment return
Drawing index
2
3
4
5
5
7
8
8
8
9
This instruction manual applies to DVA-3007 later than S/N 0304001
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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Description
BLOCK DIAGRAM DVA-3007 SIGNAL PATH
OUTPUTS
(Optional ZDA-3006RL Bypass Rear
Assembly)
(Number of outputs reduced to 6)
O/P 1
O/P 2
O/P 3
O/P 4
RECLOCKING
INPUT
EQUALISER
O/P 5
SIGNAL FAIL
DETECTION
O/P 6
O/P 7
O/P 8
MON O/P
LINK
RL 1
RL1
ALARM O/P
Relay RL 1 = Output Alarm
The DVA-3007 270 Mb/s serial digital video distribution amplifier provides the user with a single standard
module to cover a wide range of distribution and monitoring functions for SDI or ASI signals.
Due to the fact that standard loop through techniques used in the analogue domain are unsuitable to the digital
domain most digital equipment comes with no facility to route the input signal to other locations.
As a result a VDA is required at almost every point in the digital chain.
Serial digital signals also suffer severe deterioration over relatively short cable distances. The DVA-3007 provides
a means of extending the working distances that can be achieved by equalising, reclocking and re-transmitting the
data mid route.
Where a large number of reclocked outputs are required the DVA-3007 may be used to provide reclocking and its
outputs fed to one or more DVA-3006 non reclocking DA’s to provide the number of outputs required.
This provides a more economic solution than using multiple reclocking DA’s and minimises jitter increase due to
unnecessary re-clocking.
An optional rear assembly, ZVA-3006RL (sold separately), provides a bypass relay to switch the Input (SK1) to
Output 1 (SK2) in the event of a power failure. When this bypass rear assembly is used, the number of outputs is
reduced to 6.
The DVA-3007 may be mounted in IRT’s 1 RU or 3 RU frames with other analogue or digital modules.
Features:
•
•
•
•
•
•
For use as buffer or distribution amplifier.
8 x in-phase 270 Mb/s ASI or SDI reclocked outputs.
Automatic input equalisation to 250 metres.
Automatic output muting on no input.
May be used in conjunction with non-reclocking DA’s to provide multiple reclocked outputs.
Front panel indicators provide monitoring of presence of input signal at 270 Mb/s.
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Technical Specifications
DVA-3007
Video input:
Number
Impedance
Return loss
1.
75 Ω.
>20 dB 5 MHz to 270 MHz.
(>15 dB with optional ZVA-3006RL bypass rear assembly)
Equalisation
Automatic, better than 250 metres at 270 Mb/s for Belden 8281 or equivalent cable.
(reduces to 200m when LK2 is closed).
Video outputs:
Number
Type
Level
Impedance
Return loss
8 ASI or SDI plus one front panel monitoring output.
Reclocked.
800 mV ±10% into 75 Ω.
75 Ω.
>20 dB 5 MHz to 270 MHz.
DC offset
Nil.
(>15 dB with optional ZVA-3006RL bypass rear assembly)
Performance:
Reclocking
Factory set for 270 Mb/s operation.
Rise time
Residual jitter
<1.0 ns, (700 ps typically).
<0.1 UI (measured with up to 300m of Belden 8281 or equivalent cable).
Connectors:
BNC 75 Ohms.
Indicators:
Power
Signal present
LED (green) for +5 V.
LED (green) when valid ASI/SDI signal present.
Alarm:
Signal loss
Power requirement:
Voltage
Consumption
Contact closure. Link selectable NO/NC.
28 Vac CT (14-0-14) or ±16 Vdc
2.5 VA (including ZVA-3006RL optional rear assembly).
Other:
Temperature range
Mechanical
Finish:
Front panel
Rear assembly
Dimensions
Standard accessories
Optional accessories
0 - 50° C ambient.
Suitable for mounting in IRT 19" rack chassis with input, output and power
connections on the rear panel.
Grey background, black lettering & red IRT logo.
Detachable silk-screened PCB with direct mount connectors to Eurocard and
external signals.
6 HP x 3 U x 220 mm IRT Eurocard.
Rear connector assembly with matching connector for alarm output.
ZVA-3006RL relay bypass rear assembly (6 O/P).
Due to our policy of continuing development, these specifications are subject to change without notice.
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Technical Description
The input circuit of the DVA-3007 consists of an adaptive cable equaliser IC, which automatically adapts to
equalise any cable length from zero metres to lengths that attenuate the signal by 40 dB at 200 MHz. This
corresponds to 300 metres of Belden 8281 cable. When link LK2 is closed equalisation is reduced to 200m for use
in noisy environments or when a short cable is used. A carrier detect and output mute circuit is used to mute the
output when no signal is present. The DVA-3007 is insensitive to the pathological patterns that can be present in
the serial digital video signal.
The DVA-3007 also features an OUTPUT MONITOR point on the front panel. The output monitor is an isolated
copy of the signal present at the rear panel outputs.
The output of the input stage is coupled to reclocking circuit, which then feeds cable driver circuits to provide the
eight isolated in phase outputs from the DVA-3007.
The input cable equaliser circuit U1 and reclocking circuit U2 incorporate carrier detection circuits to mute the
output when no signal is applied to the unit. The carrier detect signal and lock signal of U2 are used to energise
relay, RL1 via a transistor, Q1, when locked carrier is present. The relay contacts are connected to SK10 on the
rear panel to give a failure alarm in the form of a make (or break) to ground on failure as set by a link LK1, on the
circuit board.
The dual AC inputs are rectified and then regulated by a switch mode regulator circuit to provide the +5V
operating voltage for the unit.
+5Vdc is fed to pin 32a of the rear Euro-connector via a polyfuse, JP2. The +5V is to provide power for a signal
bypass relay on the optional ZVA-3006RL bypass rear assembly, should one be used. The polyfuse protects the
+5V power rail by going high impedance should pin 32a be shorted to ground. This protects against the accidental
insertion of the DVA-3007 in anything other than its standard rear assembly or the optional ZVA-3006RL rear
assembly.
Installation
Handling:
The DVA-3007 contains static sensitive devices and proper static free handling precautions should be observed.
When individual modules are stored, they should be placed in antistatic bags and proper antistatic procedures
should be followed when inserting and removing cards from these bags.
Power:
Ensure that the voltage selection of the IRT mounting frame used to house the DVA-3007 and the local AC mains
supply voltage match and that the correct rating fuse is installed in the mounting frame power supply.
Earthing:
Chassis earth connection of the equipment mounting frame is via the earth connection on the three pin (IEC) AC
mains supply inlet. This is a safety earth and must be connected.
Installation in frame or chassis:
See details in separate manual for selected frame type.
LK1 is factory set for a contact make to ground on signal failure at SK10 pin 2 on the rear panel, move LK1 from
the normally closed (N/C) to the normally open (N/O) position for a break to ground on signal or power loss.
Link LK2 closed reduces the input equalisation to 200m for use in noisy environments or when a short input cable
is used.
The presence of 270 Mb/s locked signal is indicated by the ‘SIGNAL PRESENT’ front panel LED (green).
The presence of the internal +5 Vdc supply is indicated by the front panel LED (green).
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It is recommended that unused outputs on the rear panel be terminated with 75-ohm termination plugs.
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Front & rear panel connector diagrams
The following front panel and rear assembly drawings are not to scale and are intended to show relative positions
of connectors, indicators and controls only.
Optional bypass relay
rear assembly
ZVA-3006RL
DV A-3 0 0 7
8 O/P ASI/SDI D.A.
6 O/P ASI/SDI D.A
OUTPUTS
POWER OFF BYPASS SK1-SK2.
OUTPUTS
SK9
OUTPUTS
SK7
SK8
SIGNAL
PRESENT
SK7
SK6
SK5
SK6
SK5
OUTPUT MON
DC
SK4
SK2
SK4
SK3
SK2
SK1
INPUT
SK3
SK1
2
INPUT
1
SK10
SK10 2 = Alarm
SK10 1 = Gnd
2
RL1R
1
SK10
SK10 2 = Alarm
SK10 1 = Gnd
N140
Note that the ZVA-3006RL is an optional relay bypass rear assembly (sold separately), which bypasses the input
direct to output 1 in the event of a power failure. This optional rear assembly is only compatible with both the
DVA-3006 and DVA-3007 ASI distribution amplifiers and not the previous ASI/SDI distribution amplifiers,
DVA-3001 to DVA-3005.
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26/02/2003
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 $A100.00 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.
2.
3.
4.
5.
6.
7.
A fault report should be included indicating the nature of the fault
The operating conditions under which the fault initially occurred.
Any additional information which may be of assistance in fault location and remedy.
A contact name and telephone and fax numbers.
Details of payment method for items not covered by warranty.
Full return address.
For situations when “No Fault Found” for repairs, a minimum charge of $A100.00 will apply, whether
the equipment is within the warranty period or not.
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:
Email:
3007-dva.ib.doc
61 2 9439 3744
[email protected]
Page 8 of 9
Fax:
61 2 9439 7439
26/02/2003
Drawing Index
Note: Components marked n/c on the diagrams are optional and are not included on standard production units.
They are shown to assist with interpretation of additional or optional functions, which may be included or are
necessary for factory set-up procedures.
Drawing #
Sheet #
Description
804516
804673
1
DVA-3007 Circuit Schematic
ZVA-3006RL Bypass Relay Rear Assembly (optional).
3007-dva.ib.doc
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26/02/2003
PCB 804517
'SIGNAL'
'DC'
MON. O/P
LD2
HLMP-1503
'grn'
R39
680R
+5V
LD1
HLMP-1503
'grn'
R40
680R
+5V
2
21
1
10K
R38
2
C36
100nF
1
Input
Signal Detect
Monitor O/P
Output 7
GND
1
+5V
4u7
RL1A
V23026
C37
804516s3.sch
GND
+5V
10
1
ALARM CIRCUIT
RL1B
2
n.o.
n.c.
CONTACT CLOSURE (OR BREAK)
5
LK1
C46
10nF
TO GROUND ON ALARM, AS SET BY LK1
2
AC 4
AC 3
AC CT
AC 2
AC 1
Power Supply Circuit
Output 1
Output 2
Output 3
Output 4
Output 5
Output 6
Output 8
+5V
804516s2.sch
Q1
BSS123
D3
BAS16
+5V
+5V
3
1
1
2
21
1
1
3
SK11
2
1
3
8
3
2
2
1
Input, Reclocking and Output Circuit
2
2
+5V
1
1
JP2
RXE020
POLYFUSE
10nF
C45
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
DIN64RA
P1
DIN64
J1
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
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
R1R
L1R
R2R
L2R
R3R
L3R
R4R
L4R
R5R
L5R
R6R
L6R
R7R
L7R
R8R
L8R
R9R
L9R
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
5
3
1
1
1
1
1
J2
P2
J2 optional power in
1
2
3
9
7
5
3
1
COPYRIGHT
2 01-08-02 ECR1368
3 14-11-02 ECR1412
4 20-02-03 ECR1441
K.N.
Date: 26-Feb-2003
Revision: 1
ENG. APP.
CHECKED
DRAWN
DO NOT COPY NOR
DISCLOSE TO ANY
THIRD PARTY
WITHOUT WRITTEN
CONSENT
DVA-3007
SDI/ASI Reclocking
Distribution Amplifier
Drawing No. 804516
Title
Sheet
1 of 3
IRT Electronics Pty. Ltd.
ARTARMON NSW AUSTRALIA 2064
SCALE
N.T.S.
A3
SIZE
(used when fitted to FRU-1030 frame)
SK1
INPUT
JP6 0R0
JP5 0R0
JP4 0R0
JP3 0R0
6
4
2
L1R-L9R = 15nH
R1R-R9R = 68R
SK10
2
2
2
2
SK2
SK3
SK4
SK5
SK6
SK7
SK8
OUTPUTS
SK9
P3
1 02-04-02
PCB 804674
DIN64
J1
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
1
1
1
1
2
1
1
2
1
1
1
1
1
1
R2R
L2R
R3R
75R
L3R
R9R
R4R
75R
L4R
R8R
R5R
L5R
R6R
L6R
R7R
L7R
2
1
2
2
2
2
2
2
2
2
1
2
2
1
2
2
2
2
2
2
SK10
JP5 0R0
JP4 0R0
JP3 0R0
JP2 0R0
SK3
SK4
SK5
SK6
OUTPUTS
SK7
MTMM-103
1
1
1
1
6
4
5
2
P3
3
J2 optional power in
J2
MTMM-105
P2
13
14
15
16
17
18
19
20
21
22
(used when fitted to FRU-1030 frame)
1
2
3
9
7
5
3
1
D1R
3
1
BAS16
G5Y-254P
RL1R
2
1
10
9
8
7
6
5
4
3
2
1
R1R 56R
2
2
1
L1R 18nH
1
SK2
SK1
INPUT
1 11-07-02
2 11-11-02 ECR1415
Date:
K.N.
14-Nov-2002
Revision: 1
ENG. APP.
CHECKED
DRAWN
DO NOT COPY NOR
DISCLOSE TO ANY
THIRD PARTY
WITHOUT WRITTEN
CONSENT
COPYRIGHT
R2R-R7R = 220R
L2R-L7R = 18nH
Sheet
1 of 1
ZVA-3006RL
SDI/ASI D.A. Rear Panel
Drawing No. 804673
Title
IRT Electronics Pty. Ltd.
ARTARMON NSW AUSTRALIA 2064
SCALE
N.T.S.
A3
SIZE