[ntp:questions] Frequency Offset

Chuck Swiger cswiger at mac.com
Fri Feb 24 19:06:25 UTC 2012


On Feb 24, 2012, at 9:44 AM, unruh wrote:
> Temperature sensitivity is usually in the "less than 1PPM per degree C"
> so you would have had to be expriencing quite a heat wave (500 degrees
> C) to have temperture be a factor. I suspect other things might have
> been more urgent worries then.

AT-cut crystals have fairly narrow temperature region (around 20 - 40 C) where they are most stable; see page 10 of:

  http://www.ieee.li/pdf/viewgraphs/precision_frequency_generation.pdf

Regards,
-- 
-Chuck



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