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B044

DUAL G703 DETECTOR

Handbook

Version 1.0

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Summary of Contents for B044

Page 1: ...B044 DUAL G703 DETECTOR Handbook Version 1 0...

Page 2: ...ses only and does not constitute any form of warranty or guarantee All trademarks acknowledged The information in this document is subject to change without notice dB Broadcast Ltd Registered Office K...

Page 3: ...DUAL G703 Detector B044 2004 dB Broadcast Ltd D Do oc cu um me en nt t h hi is st to or ry y Date of first publication 12 06 2004 Current issue and date Board issue numbers covered 259 044 011...

Page 4: ...onnections 4 CONFIGURATION AND OPERATION 5 Front panel control 5 CONFIGURATION 6 Channel A link functions and adjustments 6 Channel B link functions and adjustments 6 Mode selection affects both chann...

Page 5: ...Volt rails The B044 dual G703 detector The module monitors two incoming signals and provides active loop through outputs on BNC s and provides local indications on the front panel of the module It als...

Page 6: ...ollectors Any one of the four alarms is selectable to the summary alarm Relay Four alarms Signal level indication Alarm insertion signal present AIS TS16 AIS Loss of Framing or Multi Framing CRC 4 qua...

Page 7: ...ti io on n Selecting rear connectors The available rear connectors and the frames signal I O used are as follows Type Frame Connectors Signal types VMC 3306K 1U 3U Avitel BNCs G703 at 2 048MHz VB110 1...

Page 8: ...1 Ctrl 0V 14 0V 2 Not connected 15 Relay B1 Com 3 Frame Error A open collector 16 Relay B1 NC 4 Level Low A open collector 17 Relay B1 NO 5 AIS Present A open collector 18 Relay B2 Com 6 CRC 4 High A...

Page 9: ...ed from front panel Level Green Input selection controlled remotely CRC Yellow Indicate G703 error detection Controls Threshold Signal loss threshold adjustment Avitel Vistek LED Ext Alrm Meaning when...

Page 10: ...CRC see next section RV1 Adjust signal loss threshold JP10 Fit this jumper to enable voltage spike suppression on the Channel A input Channel B link functions and adjustments Adjustment Main Module C...

Page 11: ...Loss of framing or multi framing if enabled Level LVL LVL Signal level below threshold set by RV1 CHA or RV2 CHB AIS AIS AIS Alarm insertion signal present AIS TS16 AIS CRC 4 CRC CRC Quality below CR...

Page 12: ...e frame Check that the appropriate rear connector has been cabled correctly The Level LED keeps blinking on and off for good signals Check that the front panel threshold sensitivity is set correctly t...

Page 13: ...cluded MPS 3392L PSU for above chassis no PSUs included VMC 3306K BNC Rear connector module no PSUs included 1U Avitel configuration ERF 1131K 1U Chassis 3 Module slots PSU mounted externally no PSUs...

Page 14: ...0 Version 1 0 S Sp pe ec ci if fi ic ca at ti io on n INPUTS OUTPUTS Interface G703 75 Ohm or 120 Ohm factory fitted option with active loop though outputs Framing CRC4 Multi frame or Non CRC4 Data ra...

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