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Knowledge Base

There is noise in conference site caused by the broken of transit card’s MIC jack

Publication Date:  2012-09-22  |   Views:  139  |   Downloads:  0  |   Author:  SU1001048203  |   Document ID:  EKB1000015666


Issue Description

After opening the microphone, there is noise all the time. And the other conference sites can’t hear clearly.

Alarm Information


Handling Process

1. There is still noise after the tone board local loopback in operation bench.
2. Open the shelf and replace the AUD board. The noise still exists.
3. The noise still exists when we pull out the assisted microphone.
4. Insert the assisted microphone and pull out the main microphone, the noise disappears.

Root Cause

The noise may be caused by the transit card with poor quality or the jack is broken when user plugs the microphone.