IEC 60689:1980
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Measurements and test methods for 32 kHz quartz crystal units for wrist watches and standard values
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
12-31-2021
English - French, Russian
01-01-1980
Applies to 32 kHz quartz crystal units for wrist watches. Gives methods of measurement of resonance frequency, resonance resistance, frequency-temperature dependence and frequency pulling. Lays down test methods in accordance with IEC 68-2-6, 68-2-20, 68-2-21 and 68-2-27.
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