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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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Performance Event Meaning

The TLBMIN event indicates the minimum value of the bias current of the laser.

Performance Event Attributes

Performance Event ID Performance Event Type


SDH performance event

Impact on the System

When the bias current of the laser is within the allowed range, the equipment and system are not affected. When the bias current of the laser is beyond the allowed range, the laser will fail or be damaged, and services may be interrupted.

Possible Causes

Count the minimum value of the bias current transmitted by the laser in the current period. This value shows the physical performance, which exists after the laser is online.

Relevant Alarms

Alarm Name Correlation


The life of the laser is close to the end.


  1. See LSR_WILL_DIE or TF.



Updated: 2019-01-21

Document ID: EDOC1100020975

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