| 摘要 |
PROBLEM TO BE SOLVED: To measure effectively a resonance frequency of a quartz oscillator. SOLUTION: This device is equipped with a first receiving part 16a for receiving first and second signals from a signal generation part 11 and for detecting each signal as an input signal vector value, a second receiving part 16b for detecting the first and second signals outputted from a quartz oscillator 15 as output signal vector values, when the first and second signals are inputted from the signal generation part 11 into the quartz oscillator 15, a vector operation part 17 for obtaining a vector value of each ratio of each input signal vector value detected by the first receiving part 16a to each output signal vector value detected by the second receiving part 16b and for obtaining an imaginary value at the vector value of each ratio, a linear function operation part 21 for obtaining a linear function relative to the frequency passing through two points corresponding to imaginary values at obtained each frequency, and a resonance frequency calculation part 22 for obtaining the frequency at which the imaginary value becomes zero from the obtained linear function and for outputting the frequency as a resonance frequency.
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