User's Manual

5-17
Figure 5-12 Troubleshooting DS1/E1 Radio Alarms
Figure 5-13 Troubleshooting DS3 Radio Wayside DS1 Alarms
A B
1
DS1 LINE #
SIDES
TX SIG
TX ALM
RX ALM
LMW-1030-SM
10/27/99
LOSS OF INPUT SIGNAL TO I/O INTERFACE, INABILITY TO RECOVER
CLOCK ON ALARMED LINE, OR BIPOLAR VIOLATION DETECTION
1. CHECK PRESENCE AND QUALITY OF DS1/E1 INPUT TO RADIO.
2. REPLACE I/O INTERFACE MODULE.
TRANSMIT HARDWARE FAILURE OR BUFFER SPILLS
ON ALARMED LINE.
1. VERIFY QUALITY OF TX INPUT DATA.
2. REPLACE I/O INTERFACE MODULE.
LOSS OF RECEIVE CLOCK, BUFFER SPILLS, OR
ALARM INSERTION SIGNAL ON THE ALARMED LINE.
MAY ALSO BE CAUSED BY DS1 DRIVER FAILURE.
REPLACE I/O INTERFACE MODULE.
DS1 Inuput Loss
DS1 XMT ALARM
DS1 AIS INSERT
DS1 RCV ALARM
DS1 ALARMS
LMW-3134
06/27/02
LOSS OF INPUT SIGNAL TO I/O INTERFACE, INABILITY
TO RECOVER CLOCK ON ALARMED LINE, OR BIPOLAR
VIOLATION DETECTION.
1. CHECK PRESENCE AND QUALITY OF DS1/E1 INPUT
TO RADIO.
2. REPLACE I/O INTERFACE MODULE.
TRANSMIT HARDWARE FAILURE OR BUFFER SPILLS
ON ALARMED LINE.
1. VERIFY QUALITY OF TX INPUT DATA.
2. REPLACE I/O INTERFACE MODULE.
LOSS OF RECEIVE CLOCK, BUFFER SPILLS, OR
ALARM INSERTION SIGNAL ON THE ALARMED LINE.
MAY ALSO BE CAUSED BY DS1 DRIVER FAILURE.
REPLACE I/O INTERFACE MODULE.
LOS HAS BEEN DETECTED AT RCV INPUT OF I/O
CONDITIONER AND AIS (ALL ONES OR ZEROS) IS
BEING INSERTED.
CHECK FOR LOS AT XMT END OF HOP. IF NOT,
1. CHECK FOR UPSTREAM XMTR ALARMS.
ANY XMTR ALARMS?
YES, TROUBLESHOOT XMTR.
NO, GO TO 2.
2. REPLACE ALARMED DS3 I/O INTFC.