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Test Equipment Anonymous (TEA) group therapy thread
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Specmaster:

--- Quote from: med6753 on July 07, 2022, 06:12:02 pm ---
--- Quote from: Specmaster on July 07, 2022, 06:09:41 pm ---
--- Quote from: bd139 on July 07, 2022, 04:07:13 pm ---So sitting here cleaning test gear again.

Anyone got any ideas what might remove this horrible idiot graffiti on the panel? Isopropyl doesn’t touch it.

--- End quote ---
Yes, try using a dry marker pen, thats what I have used in the past.

--- End quote ---

Always read ahead before responding. You are a day late and a dollar short.  :P :-DD

--- End quote ---
OK, go piss up a rope  :-DD :-DD :-DD
Saskia:
graphite can easily be removed using fluorine gas.
Saskia:
as can Poettering.
AVGresponding:

--- Quote from: Zoli on July 07, 2022, 06:14:22 pm ---
--- Quote from: AVGresponding on July 07, 2022, 05:51:48 pm ---
--- Quote from: Zoli on July 07, 2022, 05:39:33 pm ---Your case is simple: everything above 3.000V is out of spec, and should be discarded.
If you think that the manual is wrong, you can always ask the manufacturer.

--- End quote ---

I don't think so; the manual describes 3.000V as "full scale".
...

--- End quote ---
Please explain in details, why over-range data should be considered valid; thanks in advance.

--- End quote ---

It's not over-range. 3.1V is over-range. The manual mentions the frequency measurements over 200kHz have unspecified accuracy. Why not just make them over-range? Why not make 3.001V on diode test over-range? Why not mention that 3.001V to 3.099V are unspecified accuracy? I think 3.1V is full scale, and the manual is just wrong.

I shall measure the VF of a string of diodes that reads between 3.001 and 3.099 on the F87 and see what a 6.5 digit meter says with a 0.6mA compliance current (the typical value for the F87 as per the manual). I'm betting it's within the accuracy specs for the 3.000V mentioned in the manual.
bd139:
More cleaning … haven’t had a 465B this good yet. Hope the IC works  :-DD
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