User Manual
INSTALLATION AND MAINTENANCE MANUAL
LYNX.sc E1 FAMILY
SPREAD SPECTRUM RADIOS
OCTOBER 1998
ii TOC & INTRODUCTION
3.6 MOUNTING THE LYNX.SC .......................................................................................................................3-15
3.7 P
OWER CONNECTION AND WIRING ........................................................................................................3-16
3.7.1 DC Power Wiring...........................................................................................................................3-17
3.7.2 AC Power Connection...................................................................................................................3-19
3.8 A
NTENNA CONNECTION...........................................................................................................................3-20
3.9 T
RANSMISSION LINE CONNECTION .........................................................................................................3-21
3.10 A
NTENNA INSTALLATION & ALIGNMENT ..................................................................................................3-22
3.11 CEPT-1 (E1) I
NTERFACECONNECTION.....................................................................................................3-25
3.12 DIP S
WITCH SETTINGS .............................................................................................................................3-26
3.12.1 Channel Selection .........................................................................................................................3-26
3.12.2 Loopback Test Signal Selection..................................................................................................3-27
3.12.3 Spreading Code Selection............................................................................................................3-28
3.12.4 Input Alarm (Data Loss) Enable/Disable....................................................................................3-29
3.12.5 AIS Enable/Disable .......................................................................................................................3-30
3.13 S
YSTEM TURN-UP TO SERVICE............................................................................................................... 3-31
3.13.1 Output Power Adjustment ............................................................................................................3-39
3.13.2 Loopback/BER Testing.................................................................................................................3-40
3.13.3 Error LED Mode Selection............................................................................................................3-42
3.14 A
DDITIONAL CONNECTIONS.....................................................................................................................3-43
3.14.1 Orderwire Connection and Address Selection ..........................................................................3-43
3.14.2 Alarm Connections........................................................................................................................3-46
3.14.3 Diagnostics Port Operation.............................................................................................................3-48
3.14.3.1 Diagnostics Port using RS-232................................................................................................3-49
3.14.3.2 Diagnostics Port using RS-422................................................................................................3-50
3.14.3.3 TBOS Protocol and Map...........................................................................................................3-51
3.14.4 AUX DATA (Digital Service Channel) Connection .........................................................................3-53
3.14.5 Protect Port Connection (Preliminary Information) ...................................................................3-56
3.14.6 Protect Port Connection (Preliminary Information) ...................................................................3-57
4. TROUBLESHOOTING...................................................................................................................................4-1
4.1 R
EGULAR MAINTENANCE...........................................................................................................................4-1
4.2 C
HANGING FREQUENCY PLANS................................................................................................................... 4-2
4.3 U
SING A SPARE TERMINAL........................................................................................................................4-3
4.4 T
ECHNICAL SUPPORT................................................................................................................................4-4
4.5 R
EPAIR POLICY..........................................................................................................................................4-5
4.6 F
RONT 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 E
RRORS IN THE DATA STREAM ...............................................................................................................4-17
4.8 I
NTERFERENCE COUNTERMEASURES .....................................................................................................4-18
4.8.1 Use of a Spectrum Analyzer to Evaluate Potential Interference.............................................4-20
4.9 B
ACK-TO-BACK TESTING.........................................................................................................................4-21
4.10 BER (B
IT ERROR RATE) TESTING..........................................................................................................4-23
5. APPENDICES..................................................................................................................................................5-1
A
PPENDIX A - DIGITAL LINE INTERFACE SPECIFICATIONS...................................................................................5-1