Hi: I've started looking at the time interval where the start is from cesium standard # 1227 and the stop is from cesium standard #1013. I think # 1227 is good for some parts in E-13 and # 1013 needs adjustment. The TI is increasing a few pS every second. Which way is does 1013 need to be adjusted? Is their some memory trick to keep this straight?
------------------SR620 Trick-------------- What I thought was a problem with my SR620 turned out to be a rollover problem. If you're using the SR620 counter instead of using a 1 or 10 Mhz signal from the standard as the stop input (GPS is the start input) feed a 10 Mhz signal into the rear panel external reference input. Use the SEL, SET and SCALE ^ V keys to enable the rear panel reference input. Then feed the front panel 1 kHz REF output to the B stop input. This improves the rollover problem by 1,000 to 1 mS. Note the SR620 reference output signal is tightly coupled to and aligned with the external reference input, it is not just a simple oscillator. Have Fun, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts