Hi:
The actual oscillator that provides the output from a Cesium standard is
in fact a crystal whose fine tuning voltage has been locked to the
Cesium source.
If the oscillator was run standalone and it's aging rate determined by
using GPS then if the proper voltage ramp was applied the output would
be very close to a Cesium source. This may be a linear or parabolic
ramp. An example is plotted at: http://www.rt66.com/%7Eshera/index_fs.htm
but for Cesium quality the tuning voltage needs orders of magnitude
smaller steps.
The problem is coming up with the voltage ramp. I hear that the Austron
2010B Disciplined Oscillator has steps that are too crude. Has anyone
come up with a viable way to do this?
Have Fun,
Brooke
--
w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com
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