e/Frequency drift

Information
has gloss	eng: In electrical engineering, and particularly in telecommunications, frequency drift is an unintended and generally arbitrary offset of an oscillator from its nominal frequency. This can be caused by changes in temperature, which can alter the piezoelectric effect in a quartz crystal, or by problems with a voltage regulator which controls the bias voltage to the oscillator.
lexicalization	eng: Frequency Drift
instance of	c/Communication circuits