[time-nuts] Switching oscillators
shalimr9 at gmail.com
shalimr9 at gmail.com
Sun Dec 9 22:19:29 UTC 2012
If they don't get close, which is right?
If you only have 2 references, you cannot tell which is right.
Didier KO4BB
Sent from my Droid Razr 4G LTE wireless tracker.
-----Original Message-----
From: lists at lazygranch.com
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Sent: Sun, 09 Dec 2012 4:04 PM
Subject: Re: [time-nuts] Switching oscillators
You would probably want to see when the external oscillator frequency is close to the internal oscillator. I suppose than could be done with a mixer and glue circuitry. I don't think this is cheap though.
-----Original Message-----
From: Joseph Gray <jgray at zianet.com>
Sender: time-nuts-bounces at febo.com
Date: Sun, 9 Dec 2012 14:12:51
To: Discussion of precise time and frequency measurement<time-nuts at febo.com>
Reply-To: Discussion of precise time and frequency measurement
<time-nuts at febo.com>
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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