Mark Sims wrote: > The good Lady Heather's GPS Disciplined Oscillator Controller Program > calculates and plots (also writes the results to the log file) ADEV and > OADEV of the Thunderbolt's reported error estimates. My comparison of these > "auto-ADEVs" to the values generated from a Tek DC5010 counter showed they > agreed within a factor of two. > > Note that the DC5010 was measuring the Thunderbolt 10 MHz signal against a 1 > MHz cesium reference. The data had to be massaged some where the phase > rolled over (the DC5010 counter has a 5 nsec or so bogus zone where the time > interval is wrapping). The counter was set up to calculate time intervals > over 10 seconds (to get picosecond resolution) so ADEVs below 10 seconds were > not available. > > > > ----------------- > > What does the plot of ADEV vs tau look like when the Thunderbolt OCXO is > unlocked and one just logs the Thunderbolt's own measurements of the > phase and frequency errors. > It should exhibit a minimum at a value of certain value of tau. > > > _________________________________________________________________ > Windows Live™: Keep your life in sync. > http://windowslive.com/explore?ocid=TXT_TAGLM_WL_t1_allup_explore_012009 > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > Mark
Where these results obtained when the Thunderbolt OCXO was locked? Bruce _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
