Thank you, Bob, yes, that was my first guess, too. I opened it and shortened the relay contacts with an extremly low ohms short and the display changed significantly when coming to K101. I have to get one.

Besides, after fumbling and knocking and all that handling the instrument is now quite stable - that lasts till the next hyper important unattended long time measurement...

Thanks a lot

Volker


Am 18.05.2013 03:46, schrieb Bob Camp:
Hi

Never seen that problem, but it sounds very much like a relay / mux problem in 
the ohms section.

Bob

On May 17, 2013, at 9:23 PM, Volker Esper<[email protected]>  wrote:

Hi,

I bought a 34401A lately. It's all fine, except it's got a fault when measuring 
low ohm with 2-wires: the value runs (monotonic) from 0 to 30 oder 40 Ohms at a 
speed of say 1 ohm per second and after a while it decides to run back... When 
using 4-wires-measurement everything's alright.

Did anyone have that problem before?

Thank you

Volker

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