[time-nuts] low-g OCXO GPSDO

Poul-Henning Kamp phk at phk.freebsd.dk
Thu Jun 5 16:07:12 EDT 2008

In message <PKEGJHPHLLBACEOICCBJMEDOIGAB.jmiles at pop.net>, "John Miles" writes:

>> Anything that deforms the actual crystal will slightly change the
>> acoustical
>> waveequation and thus the frequency. Crystals also deforms due to
>> electrostatics, which have been used by NIST for finegrained
>> phase modulation.
>I wonder what would happen to g-sensitivity if you ran the crystal with a DC
>bias across it.  If you could pre-compress the crystal electrostatically,
>maybe it would become less sensitive to orientation.

You might help the 2g test case (180° rotation), but you would still
have the trouble with the 1g test case (90° rotation).

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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