[time-nuts] HP 5065A flaws and improvements
Poul-Henning Kamp
phk at phk.freebsd.dk
Sun Mar 13 07:56:55 UTC 2016
--------
In message <D1770237-8DCA-4521-B30C-66263BBF24FB at n1k.org>, Bob Camp writes:
>> That's the first I've heard of any drawbacks to the 5065. Can you give
>> more details on this?
>
>The manual talks about a 5x10^-11 temperature stability over 0-50C.
>Various members have reported data that suggests a stability about
>10X worse than this.
I'm pretty sure that is easily fixable, it's Zener in the power-supply
which has become temperature sensitive.
--
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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