Relationship between the input reference value and the input upper and lower thresholds of the OPU on the NMS

Lower threshold for the reference input optical power = Reference input optical power �?3 dBm; Upper threshold for the reference input optical power = Reference input optical power + 5 dBm
The upper and lower thresholds can be automatically obtained based on the reference input optical power or manually modified. The reference input optical power is the optimal optical power during normal system running after the system deployment commissioning is complete. After setting the reference input optical power and upper and lower thresholds for reference input optical power, the NMS compares the difference between the actual receive optical power and reference input optical power of the optical ports. If the difference is less than 2 dB, the input status is normal. If the difference ranges from 2 dB to 4 dB, the input status is warning. If the difference is greater than 4 dB, the input status is critical.

Scroll to top