Re: Difference in luma-chroma delay of C64/C128 compared to standard S-video

From: Mia Magnusson <>
Date: Wed, 6 Sep 2017 15:19:32 +0200
Message-ID: <>
Den Wed, 6 Sep 2017 14:44:28 +0200 skrev
> > On 2017-09-06, at 14:06, Mia Magnusson <> wrote:
> > 
> > But anyway the CRT shows that the timing is different between the
> > DVD player and the C128.
> Please remember that the DVD signal is most probably "correct" (or
> close to) and the C128 signal is certainly "incorrect". Therefore
> this is by no means an indicator of what the Y<->C timing difference
> actually is. You plasma might waiting for the correct second field
> before making a decision to output things. It never gets it so it
> "decides" to output "whatever" for example.

Yes, of course I assume that the DVD is correct. I have atleast one
more DVD player and my CD32 to test with. Probably some digital tv set
top boxes have s-video output aswell.

I have circuit boards from one or two similar CRT TV:s. Maybe I should
use them to make a s-video to RGB converter and feed the RGB signal to
my plasma. That would probably make a more or less perfect picture.

Also I found some stuff on the net about improving the picture by
changing stuff in the RF modulator. Maybe that might be an option too.
Although the picture is sharp enough to not give any readability
problems at all it would be nice to have a picture as sharp as
possible (without overshoots). :) 

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Received on 2017-09-06 14:00:08

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