I was gifted an HP 5370B with the usual problem: front-end problems, probably
due to overstress. It is currently up and running again with a set of 5345A
series A3/A4 boards as I wasn't able to get a cheap pair of 5088-706x hybrid
ICs.
This sounds like a common problem. As a result, I'm designing an open-source
drop-in (hopefully) replacement. My hat is off to the original IC designer, as
it is not a trivial effort due to the wide input signal common-mode range, and
very tight trigger timing requirements. Other items (like the E-ECL) output)
are also adding a bit of extra effort.
I'm hoping that someone(s) might be interested in working with me on it. I
would like to have my assumptions and math checked before I start the detailed
design phase, and perhaps contribute some better ideas.
In addition, it would be really helpful if someone could run a few rise-time
dispersion tests on an instrument with a working "B"-series A3/A4 PCB set (my
unit obviously doesn't qualify).
Regards,
Mat Breton
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