[time-nuts] OCXO Vref (in)stability plot
Poul-Henning Kamp
phk at phk.freebsd.dk
Mon Apr 22 02:03:37 EDT 2013
In message <5174699E.9060605 at sasktel.net>, Ed Palmer writes:
>I think that Vref is derived from the internal voltage regulator that
>powers the oscillator. Is it possible that any noise will appear on
>both and therefore, they'll cancel each other out? That could even
>reduce power supply sensitivity.
I guess that is a remote possibility, but quite frankly, I doubt it.
I think it far more likely that 10-20 microVolt is simply good enough
for what OCXO's are/were[1] normally used for.
[1] This is a pretty old OCXO.
--
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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