The following situations may prevent you from obtaining information about an optical module:
- Non-Huawei-certified optical modules are used.
- No optical module is installed.
- The system does not support the query of the temperature, voltage, current, receive power, and transmit power of the optical module.
- The interface does not have any transmit or receive signal and the power is 0, indicated by the transmit or receive power being NA.
- The optical module is faulty. Replace the optical module for fault locating.