[time-nuts] Ublox M8N - have I a XO or TCXO ?

Didier Juges shalimr9 at gmail.com
Thu Dec 22 09:07:13 EST 2016

TCXO usually refers to Temperature Compensated Crystal Oscillator (no heater), as opposed to Oven Controlled Crystal Oscillator (OCXO) which has an oven.
I would not expect a TCXO to become warm or draw more current at power up. An OCXO would.

Didier KO4BB

On December 21, 2016 1:29:00 PM CST, Mike Millen <mike.millen.uk at gmail.com> wrote:
>>>>> Can anyone comment on the following data, and whether they think
>>>>> oscillator in "my" M8N is a XO or a TCXO ?
>Can you monitor the current draw from cold (ambient)?
>You may be able to identify the initial steady current drawn by the
>heater, then the cycling once it's hit the right temp?
>If there's no change at all in average current as it warms then it may
>not have a TCXO.
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Sent from my Moto-X wireless tracker while I do other things.

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