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Originally Posted by jmac698
Ok, that make sense. I can use a test pattern for relative chroma delay to test it, or even better, the same frequency sweep in Y and U/V to see if there's a difference when using the Y splitter. I did notice changes in signal strength, which was taken out by a simple brightness adjustment.
I have one I can test, and see what the freq. response is. Anyhow, in my test results I found >1.6 times the freq. response with my technique.
I agree, why did you think I was confused? Because I said something about the sharpening? Actually, I didn't read the sharpening feature too closely, and you are probably right about the peaking. I understand about digital filters.
A diagram shows an optional pi filter (I think), I could type the values into a program to see what kind of filter it is, but probably a lowpass somewhere between 7 and 14MHz. The implication is that if the optional circuit is shown, it's certainly not included in the chip. I don't see a problem with this, it's fairly valid to assume a signal is bandpass limited (in this case!). Also, with sigma-delta converters, filtering isn't used either usually (I'm thinking audio adcs here), because the 1-bit sample rate is so high. That's not the case here, though, it's just a standard flash converter.
Anyhow, did you look at my tests? I don't think cables cause my smearing problem. I'll have to take a picture to show you, and see if you can't replicate it.
I'm starting to think now that the svideo itself is mostly the problem, and maybe my outputs aren't 4:4:4 afterall, but it doesn't matter as there's a significant beneift to avoiding svideo anyhow.
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