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Table of Contents LTPH-UM-1031-03, Issue 3
vi September 12, 2003 H4TU-C-319 List 1
System Alarms................................................................................................................................. 42
Alarm Option for DLC Feed............................................................................................. 44
Retiring System Alarms.................................................................................................... 44
Remote LOS and AIS Response....................................................................................... 45
OCT55 Test Pattern with AMI Line Code ...................................................................................... 45
Loopback Operation ........................................................................................................................ 46
Generic Loopback Commands.......................................................................................... 47
Special Loopback Commands........................................................................................... 47
Manual Loopback Session ................................................................................................ 48
Loopback Test Procedures .............................................................................................................. 49
General Troubleshooting Tips .......................................................................................... 49
GNLB Test Procedures..................................................................................................... 51
A3LB Test Procedure........................................................................................................ 52
A5LB Test Procedure........................................................................................................ 53
Testing with H4TU-C BERT Generator.......................................................................................... 56
Testing with H4TU-R BERT Generator.......................................................................................... 57
Appendix A - Specifications____________________________________________________________ 58
Power Consumption ........................................................................................................................ 60
Maximum Power Dissipation.......................................................................................................... 60
Maximum Current Drain................................................................................................................. 61
Loop Attenuation, Insertion Loss, and Reach ................................................................................. 61
H4TU-C-319 Card-Edge Connector................................................................................................ 62
Network Management Control Bus .................................................................................. 62
Fuse Alarm........................................................................................................................ 62
System Alarm Output Pin ................................................................................................. 63
Craft Port ......................................................................................................................................... 63
Appendix B - Functional Operation _____________________________________________________ 64
Timing ............................................................................................................................................. 64
Ground Fault Detection ................................................................................................................... 64
Spectrum Issues............................................................................................................................... 64
Appendix C - Compatibility____________________________________________________________ 65
Appendix D - Product Support _________________________________________________________ 66
Appendix E - Abbreviations____________________________________________________________ 67
Certification and Warranty ____________________________________________________________ 70