IEC 60444-9:2007 describes two methods for determining the spurious (unwanted) modes of piezoelectric crystal resonators. It extends the capabilities and improves the reproducibility and accuracy compared to previous methods.
IEC 60444-9 Ed. 1.0 b:2007
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Measurement of quartz crystal unit parameters – Part 9: Measurement of spurious resonances of piezoelectric crystal units
Category: IEC