AnsweredAssumed Answered

AD725 Vertical rolling problem

Question asked by joeka on Dec 2, 2011
Latest reply on Dec 15, 2011 by GuenterL

Hi,

 

I'm currently using AD725 to convert video from VGA to PAL. I've generate Hsync and Vsync signals specific to PAL signal generation in VHDL but i'm now having a problem with vertical rolling. In other words, when i send a test pattern, some lines are misplaced and when I plug in and unplug my svideo cable to the tv,  the misplaced lines are somewhere else (with luck it could be good !!).

 

I'd like to know if there is a solution to get a fix picture without asking for "luck" !

 

Thanks

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