[time-nuts] HP OCXO warmup graphs

[Bob Camp]

Hi

Does your 5334B have a 10811 in it or some other OCXO? 

Bob

> On Apr 23, 2016, at 5:04 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> 
> 
> 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.
> 
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
> 
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