Doug Hogarth said, "I don't know your particular GPS, but sure looks to me like GPS lost lock (started drifting), then somehow got bad lock twice, before finally getting proper lock. So I'd study GPS antenna/cable and receiver settings. Consider adding logging of some GPS status, or at least try to enable setting for "0D" (one satellite mode) and/or disabling the 1PPS when outside RAIM limits.
I can't imagine the cesium somehow "knowing" how to get back in phase like that..." Exactly. We could speculate endlessly if the offset had stayed off set, but it came back like nothing had happened. The 20 minute initial rise time does not seem within spec for the lost-lock drift of the receiver. Were you on the phone for two hours? As to static electricity, I once worked in a blasting cap plant. The women had to wear cotton underthings and no nylons because synthetic fabrics created their own static electricity. It took a few accidents to figure that out after the war (the real war, WW2). Bill Hawkins _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
