Optical module LOS error
RX LOS (Receiver Loss of Signal) indicates the module's receiver (RX) is not detecting sufficient optical power to establish a valid link. When TX Fault is asserted (usually "HIGH"), it means the transmitter cannot operate within its normal specifications. During the deployment of the OSN 6800, the SLQ4 board of the OSN 3500 interconnected with the TOM board reports an R_LOS alarm. LOS Alarm = Missing signal on opposite end! Quickly enter the interface view （for exampleinterface GigabitEthernet 0/0/1）,Hit display this. Upon inserting the transceiver, the device displays errors such as "Not Supported," "Unknown,". The article Digital Diagnostic Function (DDM) For Optical Modules describes that DDM function can be used for real-time monitoring and fault location of the module's working status, in which the optical module's transmitting optical power and receiving optical power are the key parameters for.
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