[time-nuts] 10MHz Rubidium reference source for frequency counter
csteinmetz at yandex.com
Mon Oct 27 20:04:19 UTC 2014
> > Really I am looking for a source with a good short range
> stability performance between 1 and 10 seconds.
I concur with everything Tom wrote. If that is your goal, the best
you are likely to do is with a good, free-running (non-disciplined)
OCXO. That will have the best stability you can get (short of a
hydrogen maser) from 0.1 seconds to ~100 seconds.
For the convenience of having automatic drift correction, many of us
use GPSDOs and turn off the disciplining before making measurements.
I might consider a PRS10 as an alternative, but certainly no other
"compact" Rb, disciplined or otherwise. Even the rack-mount HP 5065
can't beat a good free-running OCXO. Many of the "compact" Rb units
(and especially the FE5680) have nasty output waveforms with many spurs.
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