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Originally Posted by luRaichu
When using the Commodore's separate Y/C input with my DTV converter box, dot crawl is gone of course but the picture is slightly darker. That is okay since I'd always turn down the brightness a bit when using American NTSC to get those deeper blacks. With S-Video the black is dark enough on the default brightness. Does it lack a pedestal?
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Remember when I said:
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IIRC, the voltages the 1701/1702 were expecting are a little bit higher than what the eventual s-video spec became, so you will probably have to adjust the image a little to compensate.
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Commercial S-Video spec has a lower voltage level than what the Commodore YC monitors are expecting, and will therefore display slightly darker. The issue is that S-video did not exist yet Commodore made those monitors, so they just chose a pedestal and went with it. When S-video was invented, they didn't care about what Commodore chose and made it in line with NTSC levels.
It's nbd, just turn up the brightness a little bit. Do it in a dark room and turn up a black raster until you just barely can see it glow and then back it off a tiny bit until the glow fades to edge of glowing or off.