[volt-nuts] Calibration of 34401A

Illya Tsemenko illya at xdevs.com
Wed Oct 12 07:32:34 EDT 2016

I had fixed 34401A before and DIY calibrate using on-hand sources, with 
calibrated 7.5d DMM as reference.
Whole process can be visible on video - 
https://www.youtube.com/watch?v=9kukXTqhzsU if you like.
So it's not a rocket science, but does need set of stable 

12/10/16 17:53, Dr. David Kirkby (Kirkby Microwave Ltd) пишет:
> On 12 Oct 2016 10:31, "Poul-Henning Kamp" <phk at phk.freebsd.dk> wrote:
>> --------
>> In message <120112818.2234439.1476263954443 at mail.yahoo.com>, Bruce
> Griffiths wr
>> ites:
>>> Does anybody know if a 34401A can be adjusted by a competent 3rd party
> lab,
>>> or are the details of how to adjust the meter not available outside of
>>> Keysight?
>> The service manual has the calibration procedure, and it is all software.
>> --
>> Poul-Henning Kamp       |
> Cheers.  It seems that the lab is incompetent then, as none of the values
> appeared to be in a massive difference
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