Adjusting Attenuation Ratio of a Board

If the input or output optical power value is abnormal, you must adjust the attenuation rate to make the optical power normal and stable.

Prerequisites

To adjust the input optical power for a board, the board that is capable of adjusting optical attenuation, must be available at the upstream station.
To adjust the output optical power of a board, the board must be capable of adjusting the optical attenuation rate.

Procedure

Change the input optical power by adjusting the VOA in the upstream direction.
1. Find out the board that has a VOA in the upstream direction, based on the network.
2. In the NE Explorer, select the board and choose Configuration > WDM Interface from the Function Tree. Click Basic Attributes tab.
3. Adjust the Optical Interface Attenuation Ratio (dB) by taking the history performance data as a reference.
4. Click Apply to send the new configuration data to the NE.
5. Query the input optical power and determine whether the optical power is normal.
  NOTE:
  - If the optical power is normal, complete the operation.
  - If the optical power remains abnormal, adjust the optical power and query again.
Change the output optical power.
1. In the NE Explorer, select the board and choose Configuration > WDM Interface from the Function Tree. Click Basic Attributes tab.
2. Adjust the Optical Interface Attenuation Ratio (dB) by taking the history performance data as a reference.
3. Click Apply to send the new configuration data to the NE.
4. Query the input optical power and determine whether the optical power is normal.
  NOTE:
  - If the optical power is normal, complete the operation.
  - If the optical power remains abnormal, adjust the optical power and query again.

Parent topic: Monitoring and Maintaining Optical Power

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