Hi Rick:
I agree.
It's just that my FTS4060 IS drifting.
The Excel equation and fit for a month of data as of this morning are:
y = -1.2954x2 + 243.1x - 10631
R2 = 0.9607
Where y is in ns, x is the Day of Year and R2 is the quality of the fit (very good).
The first derivative (after dividing by 86400) gives: Offset = -3E-14 * X + 243 i.e. minus 3E-14 per day.
I'll keep watching and post from time to time, maybe this will stabilize???
Have Fun,
Brooke Clarke, N6GCE
-- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com
Richard (Rick) Karlquist (N6RK) wrote:
My understanding from talking to the experts is that no aging, or environmental effects are observable on the 5071A, and measurements have been made into the 10^-15 range. Also, no systematic frequency offset has been observed down to at least 1x10^-14. IE, frequency offset between different 5071A's is randomly distributed with a mean within 10-14 of laboratory standards, such as Cs fountains. Knowing the way we overdesigned the 5071A, I am not surprised that it is this good.
Rick Karlquist
(member of 5071A design team)
_______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
_______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
