Well, if you're open to something completely different, consider using a motor-driven potentiometer that provides a trim voltage to the OCXO. Adjust the motor at long intervals, leaving it off the rest of the time. It's called sampling control.
You'll need to have an analog phase comparator for 1 PPS that has enough volts/degree to provide a useful error signal to the motor controller. Bill Hawkins -----Original Message----- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bernd Neubig Sent: Sunday, May 22, 2016 12:41 PM To: 'Discussion of precise time and frequency measurement' Subject: [time-nuts] Simple solution for disciplining OCXO with 1 PPS Hello Fellow time-nuts, I am looking for a simple solution to discipline my 10 MHz reference OCXO in my private lab with an 1 PPS signal from a separate GPS receiver. I am curious if there is a solution possible without programming a microcontroller, as I am an old-fashioned "analogue" guy ;) I am well aware, that such a solution would have a lot of disadvantages, as it cannot effectively compensate for short-term variations. However I would be happy if such a KISS solution could achieve a stability (STS) of better 1E-10 over an hour. I know this is a damned long integration time for an analogue integrator... If that sounds too weird, I am open to receive advises for a microcontroller based solution. Thanks a lot for your comments to come. BTW: you need not to teach me about basics of short-term stability. I just want to evaluate the limits of a possible analogue solution. For sure, that's not real disciplining, but more like a long-tau integration PLL Best regards Bernd DK1AG _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.