Patrick, This has been covered extensively in recent past (this year). A quick look through the archives will tell you more than you bargained for...
Didier > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Patrick Reynaert > Sent: Sunday, December 21, 2008 4:13 PM > To: time-nuts > Subject: [time-nuts] Jupiter modules: 1pps or 10kHz to lock an OCXO ? > > Hello, > > > Using the 10kHz output to lock an OCXO is common practice and > seems to give good results. > > Has anyone tried to use the 1pps output? One? could first > make a simple divider to create a 0.5Hz reference with 50% > duty cycle, and then use this signal to lock an OCXO. This > would also allow the use of other OEM GPS modules that don't > have the 10kHz but only the 1pps signal. > > Of course, as the 0.5Hz signal is much lower in frequency > than 10kHz, the short-term stability is pushed more to the > OCXO, making the requirements of the OCXO even harder. > > But maybe the 1pps signal has better stability than the 10kHz > signal? Or is this the same since these signals will only > influence the long-term stability of the oscillator and have > the same accuracy? > > Any thoughts are highly appreciated. > > Thanks, > Patrick. > > > > > > _______________________________________________ > 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. _______________________________________________ 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.
