Operation Manual

ID Name Class Severity Unit
72 Laser TX current 0x0020 Critical FOI
Description The measured laser current is too high > 200 mA. Hardware fault.
NOC Actions Dispatch tech to replace FOI.
Field Actions Replace FOI card.
Fiber Distributed Antenna System (Fiber DAS)
133
Base Station Interface (BIU) Alarms
ID Name Class Severity Unit
41 Lost RF instance 0x0030 Critical BIU
Description
The supervisor in the BIU has detected a loss of an RF instance, i.e. amplifier
chain. Hardware or software fault.
NOC Actions Dispatch tech to replace BIU.
Field Actions Replace BIU card.
ID Name Class Severity Unit
42
Received power
from BTS low
0x0030 Warning BIU
Description
The received power input from the BTS is measured below the set alarm
threshold. This could be due to settings if the card has not been properly
commissioned yet or it could be because the BTS is down or the RF
transmission between BTS and BIU is broken.
NOC Actions
Check the base station operation feeding the card. If no fault found and the
system was properly commissioned then dispatch a field tech.
Field Actions
Check the level from the base station. Check the transmission line from BTS to
the BIU card. If everything is OK then check the SMA connector is OK on the BIU
card itself. If that still checks out, replace the BIU card and arrange a RMA for
the faulty card.
ID Name Class Severity Unit
43
Received power
from BTS low
0x0030 Critical BIU
Description
The received power input from the BTS is measured below the second alarm
threshold. This could be due to settings if the card has not been properly
commissioned yet or it could be because the BTS is down or the RF
transmission between BTS and BIU is broken.
NOC Actions
Check the base station operation feeding the card. If no fault found and the
system was properly commissioned then dispatch a field tech.
Field Actions
Check the level from the base station. Check the transmission line from BTS to
the BIU card. If everything is OK then check the SMA connector is OK on the BIU
card itself. If that still checks out, replace the BIU card and arrange a RMA for
the faulty card.