User's Manual

Uniwave Understanding Alarms & Reporting
User Manual
Copyright © 2022 Zinwave. All rights reserved. 13-23
Alarm
Description
Action
Uplink Automatic Gain
Control activated
This indicates that the Remote Unit
has detected a signal that has
reach the “UL AGC Threshold”. It is
currently working in a “limited”
region before it switches off
completely.
This indicates that the Remote Unit is
sensing a higher than expected uplink RF
level. This may be due to the temporary
presence of a high power mobile without
power control close to the antenna or a
lack of isolation between transmit and
receive antenna ports.
If the condition is transitory, consider
setting the “UL AGC Threshold” to a
higher level. If the alarm is due to poor
isolation between antennas, try to space
the antennas correctly.
Downlink Automatic Gain
Control activated
This indicates that the Service
Module has detected a signal
above its “Relative Input AGC
Threshold”. It is currently working in
a “limited” region before it switches
off completely.
This indicates that the Service Module is
sensing a higher than expected downlink
RF level from the connected RF source.
This may be due to an incorrect setting
for “Calculated Input Level “ or an
unexpected increase in BTS output.
Check the measured input signal to the
Service Module and against expected
input signal loading and levels, paying
special attention to level changes caused
by pilot back off.
If the level has increased due to
unexpected increase in either channel
numbers or service types, check with BTS
providers and modify settings accordingly.
Uplink has poor RF
performance
The uplink optical link has poor
performance usually due to high
optical loss.
Check and clean link.
Downlink has poor RF
performance
The downlink optical link has
poor performance usually due to
high optical loss.
Check and clean link.
Uplink gain is limited by the
maximum allowable output
power of a Service Module
The uplink gain is limited by the
maximum input signal level at the
Remote Unit and the maximum
output level of the Service module
(+5dBm).
The system will automatically configure
the desired Uplink/Downlink balance for
each service path to every RU. It does
this by adjusting the uplink gain according
to the DL power set on each RU. If the
resulting uplink power at the Service
Module exceeds the limit, resolve it by
lowering the Uplink/Downlink balance
setting on the affected service