On Wed, Oct 21, 2020 at 06:55 AM, John Gord wrote:
I know the problem with the trimmer caps. I found several that had no effect, initially blaming that on the lack of HF content in the signal as it appears and not expecting a multi-device failure.
I temporarily put some small caps (3 - 10 pF) in parallel with one trimmer-cap at a time and so far, I've found 5 (yes, five) that immediately made the pulse steeper, without overdoing it, in both channels!
I'm afraid this is going to exhaust my donor supply...