On Tue, 22 Sep 2015 23:49:25 -0400
"Bob Benward" <[email protected]> wrote:
> Continuing this discussion, I have included a PDF showing the past 30days of
> EFC. Amazingly, the drift has reversed direction! Anyone have any insights
> into this behavior? Each data point represents 10 seconds.
Vig and Meeker have written a good paper on aging of quartz crystals[1],
which lists quite of few of the aging mechanisms and references papers
that have studied them. If you cannot access it, a (very short) summary
can be found in Vig's Crystal Oscillator Tutorial [2].
Attila Kinali
[1] "The Agin of Bulk Acoustic Wave Resonators, Filters and Oscillators",
by Vig, Meker, 1991
[2]
http://ko4bb.com/manuals/index.php?dir=02_GPS_Timing/John_Vig_Tutorials_on_Crystal_Oscillators
--
Reading can seriously damage your ignorance.
-- unknown
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