A common temperature for a crystal oven is . but may vary between depending on setup.
3.
Quartz chronometers designed as time standards often include a crystal oven, to keep the crystal at a constant temperature.
4.
For critical applications the quartz oscillator is mounted in a temperature-controlled container, called a crystal oven, and can also be mounted on shock absorbers to prevent perturbation by external mechanical vibrations.
5.
Factors outside of the crystal itself are e . g . aging of the oscillator circuitry ( and e . g . change of capacitances ), and drift of parameters of the crystal oven.
6.
Temperature influences the operating frequency; various forms of compensation are used, from analog compensation ( TCXO ) and microcontroller compensation ( MCXO ) to stabilization of the temperature with a crystal oven ( OCXO ).
7.
Regular wearing of a quartz watch significantly reduces the magnitude of environmental temperature swings, since a correctly designed watch case forms an expedient crystal oven that uses the stable temperature of the human body to keep the crystal in its most accurate temperature range.
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