Aviat Networks ECLIPSE EDGE, Руководство пользователя

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260-668080-001 Rev 002 March 2013 9
Eclipse Edge User Manual
Check that all other link health indicators are normal before investigating an
interference problem. Then check for any new link installations in the same
geographical area, on the same frequency band, which coincide with the onset of BER
alarms. Confirming interference may require use of a spectrum analyzer.
ADC Failure (ODU)
No communications with the analog to digital converter. This is a warning alarm.
Probable Cause
Equipment malfunction.
Recommended Actions
1. Check for other alarms to determine how critical the failure is. Depending on the
malfunction, the terminal may otherwise operate satisfactorily.
2. Reboot (power off, pause and power-on). If the alarm persists, replace the ODU.
Additional Information
The ADC in the ODU is used to monitor voltages for presentation to the IDU. A failure
will affect RSL, Detected TX Power, and ODU voltage and temperature readings.
• If there are other ODU alarms which indicate a general loss of communications with
the ODU, the problem may be due to loss of power at the ODU, an ODU cable fault,
or an IDU-to-ODU telemetry failure.
• If there are similar alarms on other ODUs, an IDU problem is indicated. Reboot, and
if the alarms remain, replace the IDU.
Where there is doubt, always replace the IDU before an ODU.
Additional Information
This alarm is only checked at power-on, reconfiguration, or software reload. Loss of
communications to the demodulator means its configuration cannot be loaded.
Demodulator Not Locked
Demodulator cannot synchronize to Rx data. This is a critical alarm.
Probable Cause
Path loss, or equipment malfunction.
Recommended Actions
Check other local Link (RAC/Radio) alarms.
• A path or remote Tx failure is indicated by the absence of upstream Rx alarms.
- Possible upstream ODU alarms include Rx Synthesiser and Tuner alarms.
• A component failure is indicated by the additional presence of:
- One or more of the upstream alarms indicated in 1) above, or alarms indicating
a loss of communications with the ODU, such as an ODU Cable Unplugged
alarm.
Additional Information
Demodulator unlocked is the primary receive-signal path and equipment alarm.
Always check upstream, towards the ODU, path and remote radio, to ascertain the
cause.