[time-nuts] Thunderbolt performance vs temperature sensor
jmiles at pop.net
Tue Mar 10 07:03:05 UTC 2009
> Hello Said,
> Attached is a screen dump of a run that John Miles did. You can
> see that the envelope of the DAC voltage follows the temperature
> curve (inversely). On a finer scale the DAC voltage follows the
> PPS error. This plot was done with the unit locked to GPS. I
> believe the time scale is 10 secs/pixel (1 hr per major
> horizontal division).
Here's a somewhat-clearer example:
Each point is 108 seconds, so the entire screen width is about 24 hours.
The yellow temperature and green DAC curves are rather strongly correlated!
-- john, KE5FX
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