Aviat Networks ECLIPSE EDGE, Руководство пользователя

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16 Aviat Networks
1. Check for path loss.
Traffic will be affected in both directions.
A complete path loss will almost invariably be preceded by a low RSL and BER
alarms; check Portal History and Event Browser screens and associated event
help.
2. Check equipment.
3. An equipment related path loss should be signalled by alarms from the ODU, RAC,
or IDU.
Such alarms may be at the local or remote end and may be one-way or both-way
traffic affecting.
RX or TX Module Temperature
RX or TX module temperature is out of range. This is a warning alarm.
Probable Cause
The ODU is faulty with an overheating problem or a faulty temperature sensor.
ODU temperature excessive.
Recommended Actions
1. Check for other ODU related over-temperature alarms: Power Detector and IF.
2. Use the Portal Performance screen to check ODU Temperature and Detected Tx
Power. ODU Temperature should not more than 90°C, and then only in extreme
ambient and maximum Tx power conditions. If Detected Tx Power is not normal,
this may be as a result of general overheating, or a component failure.
3. If there is correlation between other temperature alarms and/or the ODU
Temperature reading, a general overheating of the ODU is indicated. If this cannot
be associated with very high ambient temperatures, a faulty ODU is indicated. The
ODU must be replaced.
4. If there are no other alarms, the ODU Temperature is normal, Detected Tx Power
is normal, and the ambient is not high, then a localized alarm measurement fault is
indicated. The ODU should be replaced.
5. Where an environmental temperature problem is suspected, use the Portal Events
Browser and History screens to see if there is an alarm pattern associated with
ambient temperature and sun position. If confirmed, a sun shield should be
installed for the ODU.
Additional Information
This temperature output is used to maintain correct transceiver calibration over
temperature.
The ambient must not exceed 55
o
C (131
o
F), which is a shaded temperature limit (no
solar gain).
Detected Tx Power should be within 2 dB (typically within 1 dB) of the Tx power
setting in a RAC Plug-ins screen
when ATPC is disabled . In situations where ATPC is
selected, refer to the commissioning record for guidance on a normal Tx power
indication.
TX Manual Lock
Transmit manual switch mode is active. This is a warning alarm.