[time-nuts] Disciplining Rubidium

SAIDJACK at aol.com SAIDJACK at aol.com
Fri Apr 25 12:16:25 EDT 2008

Hi Scott,
the Fury is designed to slowly drift-back these kinds of phase  disturbances, 
so  as to reduce the frequency error caused by this.
30ns over 4 hours (or 2.1E-012) sounds about right. You can speed that  up by 
increasing the serv:phaseco value - at the expense of larger frequency  
offsets and slightly more noise of course.
For phase errors exceeding about 200ns, the 1PPS output will be shifted  
immediately due to the long time it would take to drift it to 0ns.
In a message dated 4/24/2008 17:48:17 Pacific Daylight Time, smace at intt.net  

I ended  up doing this with a LPRO-101 that I am using with the Fury a few 
days  ago.
The unit did not loose lock, however it did cause it to drift very  slowly 
for a few
hours.  This was a 90degree turn.  It also  changed the airflow over the 
so I'm sure that had something to do  with it as well.

This resulted in peak of +30ns of phase error over a 4  hour period.


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