Hi Tom, yes, they are all GPS locked. here is the same OCXO type without proper temp compensation: _http://www.jackson-labs.com/images/gpsstat.htm_ (http://www.jackson-labs.com/images/gpsstat.htm) You can see that now the phase has to change considerably to compensate for the EFC voltage change (because tempco has not been properly established yet). To have the TIC compensate, it needs to detect a phase offset first. This error will be prevented if the tempco already compensates properly for temperature changes. As the proper tempco is established, the phase offsets diminish in magnitude. bye, Said In a message dated 2/4/2009 21:58:18 Pacific Standard Time, [email protected] writes:
In that case, how do you distinguish in the plots between the GPS phase locking reaction to the OCXO starting to go off-frequency and software temperature compensation? How much of the correction in the plots is due to normal phase locking against GPS and how much is due to your temperature sensing and compensation? _______________________________________________ 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.
