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AIS detected on DS1 input to radio.
Fault is external to radio.
Check external device supplying
DS1 to radio.
Inability to recover clock or bipolar
violation detected on DS1/E1 input
to radio.
1. Check quality of DS1 input
to radio.
2. Replace I/O INTFC module.
Figure 5 - 10 Troubleshooting OC3/STM-1 Radio Wayside DS1 Alarms
5.6
MODULE REPLACEMENT
Before replacing any module, refer to Table 5 - 3 to determine the actions, other than phys-
ical replacement, required. If the module has any options (switches, subboards, etc.), refer
to the removed module so that the replacement module can be set up the same way.
Changing frequencies requires changing the crystal on the Crystal
Oscillator Subboard in the transmitter and receiver modules. Chang-
ing out the crystal requires tuning the Crystal Oscillator Subboard.
Tuning the Crystal Oscillator Subboard is a factory procedure.
Inability to recover clock or
WAYSIDE DS1
bipolar violation detected on
DS1 Online
output of radio RCVR.
1. Check XMTR end of HOP
DS1 Output Alarm
DS1 AIS Detect
2. Replace alarmed I/O INTFC
DS1 Input Alarm
Note
for alarms.
module.
LMW-5032
07/12/05
5-19
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Table of Contents
Troubleshooting
