[time-nuts] HP OCXO warmup graphs

[Hal Murray]

This is the result of a HP 5334B with opt 010 watching a GPSDO.  It was 
unplugged for a week or two while I was rearranging things.

You have to stand on your head.  Normally you assume the reference clock is 
good and use that to watch some external signal.  In this case, the external 
signal is better than the reference so we can use it to calibrate the 
reference.

The offset is the way it came.  I've never adjusted it.  I'm just assuming it 
isn't changing much over this time scale after it gets warmed up.  In 
particular, I want to watch what happens when a GPSDO recovers from holdover.

http://users.megapathdsl.net/~hmurray/time-nuts/HP-5334B-warmup.png
http://users.megapathdsl.net/~hmurray/time-nuts/HP-5334B-warmup-2.png

The wiggles are probably room temperature.


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