AnsweredAssumed Answered

ADV7842: Black and White image or S-Video does not have color burst lock

Question asked by nabs on Nov 25, 2013
Latest reply on Dec 19, 2013 by mattp

Hi

 

I am using ADV7842. When we have a B/W image over S-Video, we do not get a color burst lock. Looking at the video signal through a scope, there is a color burst even on a black and white image. When I pass a color image (color bars), then I get a color burst interrupt and the 7842 reports that there is a color burst locked. From the color image, when I go to a B/W image, the ADV7842 conitnues to report that the color burst is locked.

 

As soon as I unplug and replug s-video, ADV7842 reports there is no color burst on a B/W image.

 

Does anyone know how to resolve this issue.

 

Thanks 

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