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DDA-4320:
ASI / SDI / STM-1 Path Protection & Distribution Amplifier. | ||
FEATURES:
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GENERAL:
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The DDA-4320 path protection and distribution amplifier covers a wide range of distribution and monitoring functions for ASI, SDI or STM-1 signals. | ||
TECHNICAL SPECIFICATIONS:
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Input: |
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Number
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1. |
Impedance
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75 Ω, BNC. |
Type
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270Mb/s ASI / SDI; |
or 155Mb/s STM-1. | |
Return loss |
15dB 5 MHz to 270 MHz. |
Equalisation |
Automatic, better than 250 metres at 270 Mb/s for Belden 8281 or equivalent cable
(reduces to approx. 200m when SW3-4 is ON). |
Outputs: |
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Number |
4 ASI / SDI, or STM-1. |
(Relay bypass of input (SK2) to output (SK3) on loss of power or removal of card). |
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Type |
Reclocked. |
Level |
800 mV ± 10% (270Mb/s ASI / SDI / STM-1 NRZ encoded); |
1.0 V. ± 10% into 75 Ω (STM-1 CMI encoded). |
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Impedance |
75 Ω, BNC. |
Return loss |
15dB 5 MHz to 270 MHz. |
DC offset |
Nil. |
Performance: |
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Reclocking |
Selectable for 270 Mb/s ASI / SDI, or 155 Mb/s STM-1 operation. |
Rise time |
< 1.5 ns, (850 ps typically). |
Intrinsic jitter |
< 0.1 UI (measured with up to 300m of Belden 8281 or equivalent cable). |
Alarm: |
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Connector type |
3-pin Phoenix style. |
Signal loss |
Open circuit on loss of input or input signal does not match set rate (not locked), or AIS detected in STM-1 data. |
Power loss |
Open circuit on loss of power. |
Power Requirements: |
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Voltage |
28 Vac CT (14-0-14) or ±16 Vdc. |
Power consumption |
6.5 VA. |
Other: |
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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 background, black lettering & red IRT logo. |
Rear Panel |
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 |
Rear connector assembly with matching connector for alarm output. |
Optional |
SMU-4000 SNMP plug-in module for use with 4000 series frame fitted with SNMP "Agent". |
ZDA-4320RH double width rear assembly, for handshake connection of two DDA-4320's. |
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Due to our policy of continuing development, these specifications are subject to change without notice.
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