摘要:
Disclosed and claimed is a method of improving the effective frequency stability of a frequency reference, wherein an algorithm utilizing temperature frequency hysteresis characterization values or hysteresis model parameters, and temperature history data, is used to account for effects of temperature frequency hysteresis. Devices and manufacturing systems are also claimed.
摘要:
A method is disclosed for improving the effective frequency stability of a frequency reference source, wherein an algorithm utilizing parameters determined from frequency and temperature sensing measurements of the source or a similar source over a number of temperature excursions of different magnitude is used in conjunction with temperature history to correct the frequency reference output accounting for effects of hysteresis in the frequency-temperature characteristic of the source. Devices and manufacturing systems are also claimed.