On 6/8/20 11:23 AM, Istvan Hegedus wrote: > Hi, > I am currently investigating the TED analog signals which might be close to the > C64. How do you turn off a comb filter? Is this filter in the RF modulator? > As I can see TED uses the same saturation for all hues. Even the burst signal > amplitude is the same as the actual color signal. I believe they made it quite > simple. Hi. Yes, the capture card (bt848-based) has a knob to turn off the comb filter. I have taken the modulator off my other board & connected color to ground via 1K resistor. (Modulator appears to add an insane amount of noise.) Will take some scope measurements from pin 14 later, first need to figure out a way to get something decent to trigger on. FWIW both boards have a 6569R5 chip; I suspect the 8565 color output may be subtly different. Cheers MichielReceived on 2020-06-08 21:00:02
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