Re: Is it better to ventilate a TCXO or keep it away from room temp variations
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Hi Dennis,
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There are five parameters which affect frequency accuracy of high quality oscillators like OCXO and TCXO (in falling importance): aging, initial offset, temperature variation, capactive load variation, supply voltage variation.
You will have the best stability over time if you let the oscillator operate under constant conditions within its operating temperature range.
What a fan does is to add a cooling effect and this may affect the frequency or phase drift. This can easily be seen if you have an oscillator locked in a loop with a low bandwidth, like 1 mHz, and then you breath or blow on it. The phase will take a walk...
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G?ran
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