| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inspection method for a temperature compensation piezoelectric oscillator capable of checking whether a temperature compensation operation functions normally or not, without using a thermostatic oven. <P>SOLUTION: The inspection method for a temperature compensation piezoelectric oscillator comprises: a process A for preparing a reference temperature compensation piezoelectric oscillator, and acquiring an output frequency value when a supply voltage value for outputting to a pseudo temperature information signal is impressed onto its temperature sensor element; a process B for preparing a temperature compensation piezoelectric oscillator to be inspected, and acquiring an output frequency value when a supply voltage value of the same value as the supply voltage value in Process A is impressed onto its temperature sensor element; a process C for comparing the output frequency value acquired at the process A with the one at the process B, and classifying accepted products and rejected products for the temperature compensation piezoelectric oscillators, wherein difference between both of the output frequency values is below an error for the accepted products, but the difference is equal to or above the error for the rejected products; and a process for sending the accepted products to the next process, but for writing a compensation data in a memory element again for the rejected products and repeating from the process B to the process C. <P>COPYRIGHT: (C)2008,JPO&INPIT |
