Yes, the curve is described by a quadratic formula, same as any parabola. The time, T, (phase) of a reference oscillator is given by:
T = t0 + f0 * t + 1/2 * df * t^2. -- where t0 is the initial time offset (phase), -- and f0 is the initial frequency offset, -- and df is the frequency drift per unit time. This can give rise to several different looking shapes depending on the initial conditions. /tvb ----- Original Message ----- From: "Brooke Clarke" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" <[email protected]> Sent: Saturday, April 09, 2005 15:18 Subject: [time-nuts] Frequency error -> Parabolic Time Error? > Hi: > > Suppose that my reference oscillator is offset from 10.0 MHz by some > small amount. If I plot the time interval between the reference > oscillator and a GPS 1 PPS what will the plot look like over a long time > period, a parabola? > > Have Fun, > > Brooke > > -- > w/Java http://www.PRC68.com > w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml > http://www.precisionclock.com > > > > _______________________________________________ > 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
