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[AD9984A] Synchronisation issue

Question asked by amouf on May 12, 2016
Latest reply on May 17, 2016 by amouf

Hi everybody,


I'm actually working with the AD9984A  in order to convert a YPbPr analogic signal to YCbCr 4:2:2 digital signal. Everything works fine with the video source I use, except during one situation : if a black object appears too close to the camera objective, the image is no more synchronized, displaying an green horizontal line in the middle of the screen (photos attach, with and without the black object).

 

I'm think that maybe the problem is coming from the vertical synchronisation (Vsync come from the sync separator and not the input pin) or from the clamping. I played whith those registers, without results.. Or maybe the problem is related to the camera I used ?

I attach the state of my register as well, for a 1080p25 configuration.

 

 

Thanks for your help,

 

Arthur

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