[time-nuts] OCXO Vref (in)stability plot

Poul-Henning Kamp phk at phk.freebsd.dk
Mon Apr 22 12:13:17 EDT 2013


In message <trinity-7a7ee757-89f7-4b92-8884-9435668fef15-1366646349138 at 3capp-gm
x-bs21>, "Jochen Frieling" writes:

>your finding is quite interesting. I would like to replicate your
>measurements on some other voltage sources and Vref sources.
>Could you please elaborate on the setup, settings and acquisition
>process?

There really isn't anything to it:  Power the OCXO from a good
clean supply (HP6626A in my case), measure the voltage on the
VREF pin with the best voltmeter you have.

In my case a HP3458A with "NDIG=8", "NPLC=20"


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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