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Discussion of precise voltage measurement

Voltage Modified Allan Variance

Poul-Henning Kamp

Sun, Aug 23, 2015 6:18 PM

I have come clean:

http://phk.freebsd.dk/hacks/HP5065A/20150822_mvar/index.html

Sometimes I run voltages through the Modified Allan Variance, and
it turns out to be very informative.

Please, somebody with more time than me, take this idea and run
with it...

--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.

I have come clean: http://phk.freebsd.dk/hacks/HP5065A/20150822_mvar/index.html Sometimes I run voltages through the Modified Allan Variance, and it turns out to be very informative. Please, somebody with more time than me, take this idea and run with it... -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.

Andreas Jahn

Sun, Aug 23, 2015 6:44 PM

Hello,

been there, done that:

e.g.

Ratio stability of a LTC1043 with LTC2400:
http://www.eevblog.com/forum/projects/t-c-measurements-on-precision-resistors/msg704910/#msg704910

Comparison of Keithley 2002 / HP3458A / LTC2400 measurement data of
LTZ1000(A) references.
http://www.eevblog.com/forum/projects/project-kx-diy-calibrator-reference-sourcemeter/msg592144/#msg592144

At least you get some information at which point averaging of
measurement values has its limits.

With best regards

Andreas

Am 23.08.2015 um 20:18 schrieb Poul-Henning Kamp:

I have come clean:

http://phk.freebsd.dk/hacks/HP5065A/20150822_mvar/index.html

Sometimes I run voltages through the Modified Allan Variance, and
it turns out to be very informative.

Please, somebody with more time than me, take this idea and run
with it...

Hello, been there, done that: e.g. Ratio stability of a LTC1043 with LTC2400: http://www.eevblog.com/forum/projects/t-c-measurements-on-precision-resistors/msg704910/#msg704910 Comparison of Keithley 2002 / HP3458A / LTC2400 measurement data of LTZ1000(A) references. http://www.eevblog.com/forum/projects/project-kx-diy-calibrator-reference-sourcemeter/msg592144/#msg592144 At least you get some information at which point averaging of measurement values has its limits. With best regards Andreas Am 23.08.2015 um 20:18 schrieb Poul-Henning Kamp: > I have come clean: > > http://phk.freebsd.dk/hacks/HP5065A/20150822_mvar/index.html > > Sometimes I run voltages through the Modified Allan Variance, and > it turns out to be very informative. > > Please, somebody with more time than me, take this idea and run > with it... >