Then the next best thing is a time-delay relay set for a delay sufficient to ensure the OCXO has warmed up.
Didier Sent from my Droid Razr 4G LTE wireless tracker. -----Original Message----- From: Joseph Gray <jg...@zianet.com> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Sent: Sun, 09 Dec 2012 3:53 PM Subject: Re: [time-nuts] Switching oscillators The finished project will be placed where I won't have regular access to it, so I think I have justification for wanting this complication. Also, I want to monitor which oscillator is in use, so my application will know. Joe Gray W5JG On Sun, Dec 9, 2012 at 2:18 PM, <shali...@gmail.com> wrote: > You do not want to depend on an instrument that will switch its reference > willy nilly while you take measurements. > > Have a switch so that you have some control on what is happening. > > Sometimes too much automation is just complication without justification. > > Didier KO4BB > > > Sent from my Droid Razr 4G LTE wireless tracker. > > > > -----Original Message----- > From: Joseph Gray <jg...@zianet.com> > To: Discussion of precise time and frequency measurement <time-nuts@febo.com> > Sent: Sun, 09 Dec 2012 3:13 PM > Subject: [time-nuts] Switching oscillators > > I have a device that has an internal TCXO. I want to feed it with an > external OCXO, but I don't want to completely replace the TCXO. > > Here is the scenario. On initial power on, or after a power loss, I > want the internal TCXO to be used. Once the OCXO is up, I want to > switch to it. How could this be done easily and cheaply? > > Joe Gray > W5JG > > _______________________________________________ > 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. > _______________________________________________ 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.