[volt-nuts] High precision calibration for the poor man

[Samuel DEMEULEMEESTER]

> Instead of HP3458A + 5500A, perhaps you can lease the 5720A.

Sure, but I wasn't able to find one for rent here in France :-(



-----Message d'origine-----
De : volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] De la
part de Dr. Frank Stellmach
Envoyé : jeudi 21 octobre 2010 20:59
À : volt-nuts at febo.com
Objet : [volt-nuts] High precision calibration for the poor man



Samuel,

don't worry,  I think everyone of us made the same path of experience in
metrology, as you did.
( I can tell for myself..)

The 5500A also has stable AC ranges, and can also be measured in the same
manner as DC by the 3458A, in the most precise Synchronous Sub-sampled Mode
(SEtACV SYNC).
Could be sufficient, but I don't know the spec requirements for the Keithley
2000, especially at high freq.

You can get even higher accuracies down to a few ppm with the 3458A at low
frequencies by using Swerleins Algorithm, available on the agilent site.

Instead of HP3458A + 5500A, perhaps you can lease the 5720A.

Frank



>...

>I feel a bit stupid :P

>The only exception seems to be the Keithley 2000 while calibrating AC 
>voltage/current. According to the cal manual, you really need an "absolute"
>AC standard :-/


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