Operation Manual

ID Name Class Severity Unit
54 Negative voltage 0x0020 Error FOI
Description The measured negative voltage is too high. Hardware failure.
NOC Actions Dispatch tech to replace FOI.
Field Actions Replace FOI.
ID Name Class Severity Unit
55
RX uplink RF power
overload
0x0020 Warning FOI
Description
The measured RF power in the uplink is above threshold. Alarm is triggered at
+20 dBm something that should never come off the FOI. If this alarm is
triggered it is likely to be a hardware fault.
NOC Actions Dispatch field tech to replace FOI.
Field Actions Replace FOI. Set new FOI to same settings as the old.
ID Name Class Severity Unit
56
Received optical
power low
0x0020 Warning FOI
Description
Alarm is triggered when the optical power received on the fiber is < 60 μW.
This is likely to happen if the RU is powered off or there is a problem with the
fiber connection.
NOC Actions
Check if there is a power problem. If that is not the case dispatch field tech to
check the fibers.
Field Actions
Go to remote connected to the FOI and check for power problems. At the
remote you may connect locally and check received optical levels. If they are
also low, then fiber is the likely cause of the problem.
ID Name Class Severity Unit
56
Received optical
power low
0x0020 Error FOI
Description
Alarm is triggered when the optical power received on the fiber is < 30 μW.
This is likely to happen if the RU is powered off or there is a problem with the
fiber connection.
NOC Actions
Check if there is a power problem. If that is not the case dispatch field tech to
check the fibers.
Field Actions
Go to remote connected to the FOI and check for power problems. At the
remote you may connect locally and check received optical levels. If they are
also low, then fiber is the likely cause of the problem.
Troubleshooting
130