Hi Tom: I've been making some measurements of the Datum 4065 vs. GPS where the 4065 is setting all the parameters (i.e. I have zeroed the offset and it's doing it's thing). After some days the t/T plot looks like a straight line at about 4E13 with a couple of ns bobble.
The 4065 is at about 910 feet (280 meters) elevation. Your web page: http://www.leapsecond.com/great2005/ says about 1.1E-16 per meter so that's 3E-14 about an order of magnitude smaller than what I'm seeing. The 4065C manual says the accuracy is 1E-12 or 5E-13 depending on if the tube is rated for lifetime or high performance. I assume this means without any adjustments, i.e. power up and that's what you get. Do you have a feel how well your Cesium standards set themselves? -- Have Fun, Brooke Clarke http://www.prc68.com/P/Prod.html Products I make and sell http://www.prc68.com/Alpha.shtml All my web pages listed based on html name http://www.PRC68.com http://www.precisionclock.com http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Web Cam _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.