| 摘要 |
PROBLEM TO BE SOLVED: To improve yield in the frequency adjustment of a crystal filter with out increasing the cost. SOLUTION: A work is set to a vapor-deposition section (S101), 1st and 2nd shutters are controlled so as to move them to a prescribed position respectively (S102), after a waveform of a response of the work is measured (S103), a metallic material is vapor-deposited onto an electrode face of the work for a prescribed time and the waveform of the work is again measured (S104). Thus, a lateral positional shift amt. of a blank is calculated to correct a positional shift of the 1st and 2nd shutters. Then, based on the response waveform of the work, till a response output in each mode reaches an object frequency, the position of the 1st and 2nd shutters is corrected to vapor-deposit the metallic material continuously for the blank (S112) to adjust the frequency of the work.
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