When the input optical power is higher than the locked output optical power, the 62COA cannot amplify optical power but attenuates it by 2 dB. This fault can be rectified by changing the optical power input from the upstream site.
Symptom
- When the input optical power of the case-shaped optical amplifier 62COA is between -43 dBm and -20 dBm but higher than the locked output optical power, the output optical power is attenuated by 2 dB. The 62COA malfunctions.
- The NE reports the OUT_PWR_ABN alarm.
Cause Analysis
The locked output optical power of the 62COA is -26 dBm by default. When the input optical power of the 62COA is higher than -26 dBm, the 62COA malfunctions.
Procedure
- Add an optical attenuator to the upstream transmit site. It is recommended that the input optical power of the 62COA be a value between -39 dBm and -26 dBm.
Related Information
Locked output optical power parameter applies to the case-shaped optical amplifier 62COA only.
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