I bought the 2465B today. Nice physical condition on the outside but haven't had time to open it yet.
Seems there's a bit of noise on some channels. I'm guessing power supply issues.
Changing the vertical position of the trace definitely changes the height of the trace as I move from bottom to top. Looks like U400 is indeed problematic.
Will know more once I dig into it.
Thanks,
Barry - N4BUQ
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I'm looking at buying a 2465B that's supposedly needs a U400. Scope appears
to work somewhat (calibrator trace looks good, etc.) and price is good.
I'm wondering what I may be getting into here. Are U400's very hard to find
at a reasonable price? I see them on eBay but wondered if there's a better
source (perhaps here?) for them.
Also, is it "normal" for the 2465B to display any trace (e.g. the calibrator)
when U400 is bad? In other words, I'm wondering if U400 is really the
problem with it or possibly something else (apparently it won't calibrate).
NVRAM maybe?
Thanks,
Barry - N4BUQ
