OSCILLATION TESTER OF PIEZOELECTRIC OSCILLATING DEVICE, MANUFACTURING EQUIPMENT, AND OSCILLATION TEST METHOD

摘要

PROBLEM TO BE SOLVED: To reliably detect oscillations of piezoelectric oscillating devices. SOLUTION: In an oscillation tester 1, an oscillation test circuit is constituted of an electric power source supply part 10 for supplying electric power supply for an oscillator 4; an oscillation input part 11 for inputting an oscillation signal of a crystal oscillator 2 from the oscillator 4; an oscillation detecting part 12 for detecting the oscillation signal inputted to the oscillation input part 11; a determination control part 13 for determining the presence or absence of oscillations of the crystal oscillator 2 on the basis of the presence or absence of the detection of the oscillation signal in a determination time; and a time setting part 14 for setting an inspection time for inspecting the state of oscillation of the oscillation signal. An ON time for supplying electric power supply for the oscillator 4 and an OFF time for not supplying electric power supply for the oscillator 4 are set in the time setting part 14. The ON time is continuously constituted of a determination latency time for waiting for the detection of the oscillation signal and a determination time of detecting the oscillation signal. COPYRIGHT: (C)2006,JPO&NCIPI