When using the ADV7180BCP32Z, I got a huge difference of luma to chroma delay when adding cable length.
I use 1694A coax cable with 12Ghz BNC connectors, so I was able to put more than 600m of cable before losing the image.
But even with only 75m, the Chroma to luma delay goes from 2ns to -14ns. At the same time, Chroma to luma Gain was ok and SNR remain the same. Chroma frequency response also drop with cable length but that was expected.
Is it a normal behavior for this part that Chroma to luma delay change so much?
Can I do something about it?