[volt-nuts] Agilent calibration

[J. L. Trantham]

When I was looking to purchase a 3458A, I spoke to several people including
folks at the Loveland Cal Lab, about whether to purchase 'used' or 'new'.

The message was, as you say, 'old meters seem to be more stable than new' as
explained by the years of 'aging' and letting everything 'stabilize'.

Therefore, I purchased 'used'.

Joe

-----Original Message-----
From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
Behalf Of John Phillips
Sent: Thursday, August 15, 2013 1:19 AM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Agilent calibration

I have about 5000 hours of data.
Most 3458As come in within a few ppm of this standard.
We send 3458As out to Agilent for repair and calibration then check our lab
standards.
Old standards and meters seem to be a lot more stable than new ones.