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A-to-D delays


Eric Leonard

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Hi folks.

Is there a video A to D vs. audio A to D delay mis-match when feeding AES to an XDcam (or any other camera with AES ins)?

I haven't measured my A to D delay (out of a 702T) - I suppose I should, but in general - has anyone had any problems doing this?

Thanks in advance -- Eric.

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Eric,

I can't remember the exact number, but the A/D-D/A delay on the 7 Series is in the neighborhood of 3ms.

I think the video processing delay would be more of a problem than the audio delay.  Some of the little cameras have a delay around 4 frames or so (JVC if I recall correctly...)

---Matt

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Eric,

Sorry, missed the fact that it's only A-D.  The would be half of the A-D/D-A number.

We're talking fractions of a frame here.  In the grand scheme of things I think the audio A-D delay is a drop in the bucket compared to the video processing delays.  I wouldn't worry about it.

---Matt

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