[Previous entry: "More on phase jump"] [Next entry: "HP5065 Offset update"]

08/30/2003: "HP5065 Aging Experiment"

I've completed a long run of phase data showing the HP 5065A versus Loran-C. I took ~3 day samples from the beginning and near the end, and compared the frequency offsets.

The offset was -2.79x10^-12 at the beginning, and -2.52x10^-12 at the end, of the run. Here's the full 17 day run, showing the rollovers when the signal hit the rails of the 1us recorder range.

The difference in offset is 2.7x10^-13 over 10.4 days, or 2.6x10^-14/day. That's 7.7x10^-13/month (assuming a 30-day month). That's significantly better than the quoted spec of 1x10^-11/month. Is something wrong with this analysis?