[time-nuts] Disciplining Rubidium
SAIDJACK at aol.com
SAIDJACK at aol.com
Fri Apr 25 16:16:25 UTC 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.
bye,
Said
In a message dated 4/24/2008 17:48:17 Pacific Daylight Time, smace at intt.net
writes:
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
heatsink,
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.
Scott
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