[time-nuts] HP 5065A flaws and improvements

Poul-Henning Kamp phk at phk.freebsd.dk
Sun Mar 13 03:56:55 EDT 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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