[time-nuts] Switching oscillators

shalimr9 at gmail.com shalimr9 at gmail.com
Sun Dec 9 21:18:39 UTC 2012

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

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