[volt-nuts] HP 3458A

[gbusg]

Hi Brooke,

MU at 10Vdc for the "Golden Calibration" is in the range +/- 0.2 ppm, IIRC.

MU at 10Vdc for the "STE/9000 Calibration" is in the range +/- 3.6 ppm, 
IIRC.

The "Golden Calibration" verifies the 3458A to its 24 hour specs.

The "STE/9000 Calibration" verifies the 3458A to its 1 year specs.

Cheers,
Greg


----- Original Message ----- 
From: "Brooke Clarke" <brooke at pacific.net>
To: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
Sent: Saturday, August 06, 2011 6:45 AM
Subject: Re: [volt-nuts] HP 3458A


Hi Greg:

For example on the 10 VDC measurement what are the specs for the two
types of cal?

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.End2PartyGovernment.com/


gbusg wrote:
> Steve,
>
> Both cal versions verify all functions and ranges of the 3458A, and both
> versions provide test data.
>
> However the Standards Lab cal (known as a "Golden calibration) utilizes a
> completely different, more sophisticated procedure and methodology,
> resulting in significantly lower Measurement Uncertainty for most 
> measurands
> (compared to the STE9000 calibration).
>
> If you want to trend your 3458A at specific measurands (e.g., at 10Vdc, 
> 10k
> ohms and 1V 20kHz, etc.), then you will want the Standards Lab cal - this 
> is
> because the STE9000 calibration's Test Uncertainty Ratios are too low for
> you to realize enough meaningful confidence and repeatability of the data
> for the purpose of trending specific measurands.
>
> For the same reason you will want the Standards Lab cal if you plan to use
> Agilent's calibration test report data as correction factors in some
> state-of-art process you have.
>
> If neither of these two applications fit you, then the STE9000 calibration
> will probably suffice for you.
>
> The more I think about this, I think mostly it's other metrology labs who
> need the "Golden calibration" (for at least one of their 3458As) and those
> are the folks who already know what they need and how to order it.
>
> -Greg
>
> ----- Original Message -----
> From: "Steve"<steve-krull at cox.net>
> To: "Discussion of precise voltage measurement"<volt-nuts at febo.com>
> Cc:<volt-nuts at febo.com>
> Sent: Friday, August 05, 2011 2:28 PM
> Subject: Re: [volt-nuts] HP 3458A
>
>
> I haven't sent the meter in for calibration yet. Hoping Santa might bring
> that for Christmas. Our local Agilent rep swore the only difference 
> between
> the Agilent $550 calibration per incident and the pricier ones offered is
> the amount of paperwork you receive; the actual calibration is to full 
> specs
> for all functions and all ranges. The Agilent web site seems to say the 
> same
> thing, so I'm a bit confused by others saying there's calibration and
> there's full calibration. I need to go read the information provided by 
> Greg
> Burnett and then approach Agilent again. When I was in metrology full 
> time,
> all calibrations were to full specs or you had to clearly note any
> deviations and get the customer to buy off on them. It was amazing how 
> many
> would accept things I wouldn't accept for my home lab!
>
> Steve
>
>
>
> _______________________________________________
> volt-nuts mailing list -- volt-nuts at febo.com
> To unsubscribe, go to 
> https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
> and follow the instructions there.
>
>
>

_______________________________________________
volt-nuts mailing list -- volt-nuts at febo.com
To unsubscribe, go to 
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.