Western multiplex Lynx 2xE1 - Page 14

INSTALLATION AND MAINTENANCE MANUAL
LYNX E1 FAMILY
LICENSED & SPREAD SPECTRUM RADIOS
JUNE 2001
ii TOC & INTRODUCTION
3.7.1 DC Power Wiring.........................................................................................................................................3-44
3.7.2 AC Power Connection................................................................................................................................3-46
3.8 ANTENNA CONNECTION .......................................................................................................................................3-47
3.9 TRANSMISSION LINE CONNECTION......................................................................................................................3-48
3.10 ANTENNA INSTALLATION & ALIGNMENT ........................................................................................................3-49
3.11 CEPT-1 (E1) INTERFACE CONNECTION ...............................................................................................................3-53
3.12 DIP SWITCH SETTINGS ..........................................................................................................................................3-55
3.12.1 Channel Selection.......................................................................................................................................3-55
3.12.2 Loopback Test Signal Selection............................................................................................................3-56
3.12.3 Spreading Code Selection (Lynx.sc Only)...........................................................................................3-57
3.12.4 Input Alarm (Data Loss) Enable/Disable.............................................................................................3-58
3.12.5 AIS Enable/Disable....................................................................................................................................3-60
13.12.6 Security Switch (Lynx.HD 8xE1 only)..................................................................................................3-61
3.13 SYSTEM TURN-UP TO SERVICE.............................................................................................................................3-62
3.13.1 Output Power Adjustment.........................................................................................................................3-70
3.13.2 Loopback/BER Testing.............................................................................................................................3-71
3.13.3 Error LED Mode Selection........................................................................................................................3-73
3.14 ADDITIONAL CONNECTIONS................................................................................................................................3-74
3.14.1 Orderwire Connection and Address Selection....................................................................................3-74
3.14.2 Alarm Connections .....................................................................................................................................3-78
3.14.3 Diagnostics Port Operation........................................................................................................................3-80
3.14.3.1 Diagnostics Port using RS-232..........................................................................................................3-81
3.14.3.2 Diagnostics Port using RS-422..........................................................................................................3-82
3.14.3.3 TBOS Protocol and Map.......................................................................................................................3-83
3.14.4 AUX DATA (Digital Service Channel) Connection ...............................................................................3-86
3.14.5 Protect Port Connection (This port is for factory use only)............................................................3-89
3.14.6 Space Diversity............................................................................................................................................3-90
4. TROUBLESHOOTING..................................................................................................................................................4-1
4.1 REGULAR MAINTENANCE .......................................................................................................................................4-1
4.2 CHANGING FREQUENCY PLANS...............................................................................................................................4-2
4.3 USING A SPARE TERMINAL......................................................................................................................................4-3
4.4 TECHNICAL SUPPORT ..............................................................................................................................................4-4
4.5 REPAIR POLICY..........................................................................................................................................................4-5
4.6 FRONT PANEL STATUS LEDS..................................................................................................................................4-6
4.6.1 DATA LOSS Alarms.................................................................................................................................... 4-7
4.6.2 BER (Bit Error Rate) Alarm........................................................................................................................ 4-9
4.6.3 RX SYNC (Receiver Synchronization) Alarm.....................................................................................4-12
4.6.4 AIS OUT (Alarm Indication Signal)........................................................................................................4-13
4.6.5 FAN Alarm.....................................................................................................................................................4-14
4.6.6 RADIO FAIL Alarm.....................................................................................................................................4-15
4.6.7 FAR END Alarm..........................................................................................................................................4-16
4.7 ERRORS IN THE DATA STREAM............................................................................................................................4-17
4.8 INTERFERENCE COUNTERMEASURES..................................................................................................................4-19
4.8.1 Use of a Spectrum Analyzer to Evaluate Potential Interference..................................................4-21
4.9 BACK-TO-BACK TESTING.......................................................................................................................................4-22
4.10 BER (BIT ERROR RATE) TESTING.........................................................................................................................4-24
5. APPENDICES..................................................................................................................................................................5-1
APPENDIX A - DIGITAL LINE INTERFACE SPECIFICATIONS..........................................................................................5-1
1. General Characteristics ......................................................................................................................................... 5-1