AnsweredAssumed Answered

Chroma to luma delay variation on ADV7180 regarding cable length

Question asked by YanEmbrio on Sep 21, 2015
Latest reply on Sep 22, 2015 by mattp

Hi,

 

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?

 

Thanks

Outcomes