[time-nuts] Looking for good SR620 setup to compare GPS and rubidium

David Forbes dforbes at dakotacom.net
Thu Sep 7 14:27:38 EDT 2006


Folks,

We have a rubidium oscillator in a laboratory here that is ripe for 
calibration against a primary standard. We have installed a Datum 9390 
GPS receiver next to it as well as an SR620 counter.

Can any of you recommend a good operating mode to make the SR620 reveal 
the rubidium drift rate in a reasonably short time a couple days is OK) 
so that we may adjust it to near zero?

We have both 10 MHz and 1PPS available from both sources.

We don't currently have a logging computer connected to the SR620, but 
we can do that if needed.






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