Hi Darren,
You are using the ADV7280-M evaluation board correct? YES
Could you check that the NTSC source is ok?
- Please feed the CVBS video directly to a television and see if you see the same issue.
- Could you please take an oscilloscope plot of the CVBS input to the ADV7280-M evaluation board.
- Are you using a shielded cable to transmit CVBS video over.
- Is the cable shield grounded at both ends?
YES,we use LEADER LT416 pattern generator with BNC shielded cable
