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Re: [volt-nuts] VS 330 arrived

JG
Joseph Gray
Fri, Aug 9, 2013 3:18 AM

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@yandex.comwrote:

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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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@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 > > > > > ______________________________**_________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/volt-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts> > and follow the instructions there. > >