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

[Didier Juges]

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
>the
>
>>>>> 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
>TCXO
>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.
>
>Mike
>
>
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-- 
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