Re: //c composite output questions

["Michael J. Mahon" <mjmahon@aol.com>]

BLuRry wrote:
> 1) Is the composite signal similar to the s-video composite signals?
> If so, anyone know what the pinout conversion would be by any chance?

S-video is just like composite in every respect but one--the chroma
subcarrier has not been added to the luminance/sync signal.

Someone recently posted a simple "conversion" that used a 470pf
capacitor to connect the chroma pin to the luminance pin to produce
a composite color signal.  The S-video pinout is all over the web.

BTW, an adapter like this can also be purchased.  It works properly
(right saturation levels) only if the composite signal is terminated
properly in 75 Ohms.

> 2) Does this signal have the same off-timing of the ntsc output that
> would make it incompatible with newer equipment?

Yes, it will have identical timings.

> I'd like to hook up the //c to my new projector, but the ntsc output is
> a no go.  The projector can't sync to it and the signal is subject to
> constant vertical fluctuations.  So, I was hoping that maybe the
> composite output might be slightly different in that respect.

The projector may apply different standards to the composite input, just
because there are so many "not quite standard" composite sources, like
surveillance cameras, for example.  But it may not help...  ;-(

-michael

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