IEC 60689:1980
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.
SDO:
IEC
Language:
English
ICS Codes:
31.140
Status:
Revised
Publish date:
1979-12-31
Standard Number:
IEC 60689:1980