Now waiting for proper triax-environment
Meanwhile the questions:
What is the latest firmware version for this?
(Where) Can I buy these rubber-keypads separately?
What exactly is the hardware difference between Keithley 6517 and 6517A
(in the specs I found so far about half settling times for the 6517 preamp at "higher" currents, slightly faster reading rate to front panel for the 6517, no alternating polarity ohms mode for the 6517, no conformity to european union directives specified for 6517)
(@TiN, I hope it is O.K., that I used one of your images as reference. Please tell me if not!)?
I prepared an animated gif for comparison, but with the upload only one frame survived
Did anyone draw some schematics on the input section?
Why does it assume Aug 4th 2023 to be a Saturday?
Manufacturing was 1995. I guess retirement for the electrolytic caps would be fair.