Quote:
Originally Posted by old_tv_nut
You scoped the vertical blanker's base, which I assume is the input. What's important is what gets through to the output. It's very likely that the ringing on the base is clipped flat at the output and is not causing your problem, but you have to scope the blanker output to find out.
I also agree that it looks like you are sweeping too fast (horizontal rate) and with too much gain to see the whole waveform peak to peak at vertical rate.
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You're all right. I did and I'm going to redo it shortly.
So the ringing I posted in another thread on the ABL was done on the base as the SM shows. The ringing is very noticeable there. It doesn't mention checking any other leg of it. Is that something I should do?
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