Dan Sawyer wrote: > I am new to time-nuts, and have just successfully phase locked a Jupiter > GPS 10kc signal to a 10 mhz vcxo. There is jitter in the 10kc Jupiter > output, as expected. How can the characteristics of the 10 mhz vxco > signal be measured or analysed? A 10 mhz signal from a tcxo shows a > clean sync with the locked 10 mhz signal, however there is low frequency > 'jitter' between the two signals. The 10 mhz signal gains and looses > over about a 40 nsec range on a random 20 to 40 second cycle. > > What is the root cause of this low frequency oscillation? Is it the > result of the phase lock 'searching'? Or is it inherent in the 10mhz > tcxo output? > > Thanks in advance - Dan > > _______________________________________________ > 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. > > Dan
In order to make useful comments, more detail about your circuit and PLL time constants etc are required. 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.
