[volt-nuts] HP3458A _really_ long term stability
Poul-Henning Kamp
phk at phk.freebsd.dk
Mon Sep 5 16:05:45 UTC 2011
I finally had a chance to drop my HP3458A into a friendly Cal-lab and since
the last sticker on it says it is due for calibration in "2-1996" we are
talking seriously overdue calibration.
The result:
Internal 40K resistor: -11.66ppm
Internal 7V Voltage ref: -28.96ppm
That's not too shabby over 15 years...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at 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.
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