[volt-nuts] hp 3456a ohms calibration

[John Phillips]

Connections and Current source are about all that is left.

On Thu, Apr 30, 2015 at 10:52 AM, Ken Goodhew <kgoodhew at iinet.net.au> wrote:

> I have been trying to check the calibration of my HP3456A multimeter.
>
> I can check and set the DC volts calibration ok but when I try and set the
> ohms calibration using standard resistors I cannot get a steady reading as
> the display varies by several digits regardless of the value of the
> resistance being used to check the meter.
>
> I have already changed most of the power supply filter capacitors to see if
> this solved the problem, which it did not.
>
> The only capacitors I have not changed are the two larger ones that tested
> ok for capacitance and esr.
>
> Any suggestions as what the problem may be or where I am going wrong in my
> calibration attempts?
>
> Thanks,
>
> Ken Goodhew.
>
> VK2TKE.
>
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-- 

*John Phillips*