[volt-nuts] VS 330 arrived

Joseph Gray jgray at zianet.com
Thu Aug 8 23:18:50 EDT 2013


Yesterday I borrowed the Fluke 189 from work and comparied it against my HP
3478A. Today, from another source, I borrowed a 4.5, 5.5 and 6.5 digit DMM
and checked them all against the VS330.

None of these DMMs have been calibrated in a while. On various ranges, all
of them showed either exactly what the VS330 was set to, or +/- 1 digit,
worst case. More evidence that my HP 3478A needs calibration, and that the
VS330 does not. I wish I knew someone with a 7 or 8 digit DMM.

Joe Gray
W5JG



On Thu, Aug 8, 2013 at 3:48 PM, Charles Steinmetz <csteinmetz at yandex.com>wrote:

> Joe wrote:
>
>  Although I'm not sure for the right-most switch. I'm in the noise of
>> the LSD on my best DMM for that one.
>>
>
> You are very likely down in the noise/uncertainty of the VS330 itself, as
> well.  The LSD on these provides some resolution, but no accuracy.  That is
> true even of the much more accurate Fluke 332 and 335, as well.
>
> Best regards,
>
> Charles
>
>
>
>
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