| 摘要 |
PROBLEM TO BE SOLVED: To provide a frequency adjustment apparatus of a quartz vibrator by which fine adjustment of frequency can be performed without exchanging load capacity. SOLUTION: The frequency adjustment apparatus of a quartz vibrator includes an adjustment chamber in which a plurality of the quartz vibrators are housed, a plurality of oscillating circuits where the plurality of quartz vibrators are connected each other via cables, a switching circuit which switches selectively oscillating outputs of the oscillating circuits, a frequency measuring means which takes in the outputs of the oscillating circuits to measure a series resonant frequency without loading Fr bearing a definite relation to a series resonant frequency in loading FL, a control means which presets a given frequency range containing the target frequency Fr* to take in the outputs of the frequency measuring means and instructs a processing of a frequency fine adjustment region of the quartz vibrator to be adjusted so that the measured series resonant frequency without loading Fr of the quartz vibrator to be adjusted falls within the given frequency range containing the target frequency Fr*, and a processing means which processes the quartz vibrator to be regulated based on a control output of the control means. COPYRIGHT: (C)2008,JPO&INPIT
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