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Need help setting up AD725 board.  Can't get video out.

Question asked by Lionelwallace Employee on May 16, 2013
Latest reply on May 17, 2013 by DaveD

My customer has the AD725 EVAL board and is trying to pass both NTSC and PAL video.  They cannot get it working.  Here are their comments:

 

Here is what we have done so far:

  • We are powering the eval kit with 5VDC.
  • We are using an 800 x 600 resolution from a Laptop as the video source.
  • We have verified the signal through the bypass function to a DELL 2407WFP monitor
  • We then switched to the NTSC and used and off the shelf cable from the eval kit to the DELL 2407WFP monitor
    • The monitor does not display an output
  • We have also hooked up an arbitrary function generator, 17.734MHz with a 1Vp-p amplitude (Have also tried 1.5, 2, and 2.4)
    • The monitor does not display an output

 

We are at a bit of a loss over here and are hoping that you may have some guidance.

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