|Reference||IEC 60689 ed2.0 withdrawn corrigendum||
|Title||Measurement and test methods for tuning fork quartz crystal units in the range from 10 kHz to 200 kHz and standard values|
|Abstract||IEC 60689:2008(E) applies to measurements and test methods for tuning fork quartz crystal units in the range from 10 kHz to 200 kHz and standard values for frequency control and selection. This second edition cancels and replaces the first edition published in 1980. This edition constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition:
a) The title of the first edition is Measurements and test methods for 32 kHz quartz crystal units for wrist watches and standard values. The title is modified and the frequency range of this second edition is extended to the range from 10 kHz to 200 kHz.
b) The Lissajous method is defined in the first edition as the standard measurement method. The PI network and bridge method are used in this second edition.
c) The PI network has a transformer for impedance matching. This composition differs from that of IEC 60444-1.
|Technical Committee||49 - Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control, selection and detection|
|Work in progress||
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