EQUIPMENT MANUAL FOR RF-9122 GSM900-GSM1800 FSR
RF-9122T18 QE
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5 OPERATION
Following installation and commissioning, occasional operation tasks to handling alarms may be
required:
Table 14: Alarms diagnosis
End of section
Alarm condition
Diagnosis
Power down / power
fault alarm
Check AC power cable and verify AC mains supply is normal. During
power fault alarm, DC power supply has no output. If DC output
power is over-loaded or short-circuited, the PSU could be faulty.
Uplink / downlink LNA,
uplink / downlink PA,
uplink / downlink
high/low edge PLL
alarms handling
Check power and signal connections of respective modules. If the
power and signal wire connections are OK, then the respective
modules may be faulty. Replace the fault modules and return them
to the factory for repair.
Uplink / downlink power
low alarm
Eliminate alarm by correct setting of uplink/downlink power threshold
The recommended power threshold is within the range of
10~40dBm. If alarm can not be cleared, check the equipment.
Over temperature alarm
Eliminate alarm by correct setting of temperature threshold. If alarm
can not be cleared, apply climatic protection to the equipment
Door open alarm
Close the chassis door
