John, A few minutes in paint and here's a cool graphic for you:
http://www.leapsecond.com/pages/adev/adev-ani.gif Frame 1) shows a generic phase record (black); ignore all units. Frame 2) shows taking a phase measurement at regular intervals (red). Frame 3) shows that frequency is calculated from adjacent phase points (green). The slope (phase rise over interval run) is the frequency. Frame 4) you can predict clock behavior based on most recent phase and frequency (extrapolated phase in blue). Frame 5) and on the next measurement interval you can see how close your predictions were (prediction errors in red). You can go through individual frames at: http://www.leapsecond.com/pages/adev/ Enjoy. /tvb _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
