Re: EIA standard

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On Thu, 29 Nov 2001, Adam wrote:

> 
> hello,
> 	are bttv cards capable of processing signal in EIA standard
> 	(whatever that means). I tried to setup bttv chip even into
> 	raw mode, but couldn't get any sort of signal output. (I tried
> 	it over RCA video input).
> 
> 	the cam in question is :
> 		http://www.groupm7.net/csispeco/product.asp?P=284

Looks like it should work fine.

"EIA" there simply means 1-volt standard
video, with negative sync - essentialy the black&white north american
525/60 standard before NTSC color was added.  I suppose its conceivable
that the Bt chip doesn't like true black & white video (no colorburst,
60Hz instead of 59.94Hz field rate, 15.75KHz instead of 15.734Khz line
rate).  But I'm sure I've heard of folks using B&W cameras with bttv
cardsfor security applications.

first things first though (appologies if you've already tried this):  do
you get a picture when connecting the camera directly to a composite video
monitor or a VCR?  Does the bttv card work with a color camera?



--
Steve Tell  tell@xxxxxxxxxxxxxxx 





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