[time-nuts] Switching oscillators

Joseph Gray jgray at zianet.com
Sun Dec 9 21:53:35 UTC 2012


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,  <shalimr9 at 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 <jgray at zianet.com>
> To: Discussion of precise time and frequency measurement <time-nuts at 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
>
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