IEC 60689 Ed. 1.0 标准详情
- 标准号:IEC 60689 Ed. 1.0
- 中文标题:
- 英文标题:Measurements and test methods for 32 kHz quartz crystal units for wrist watches and standard values
- 标准类别:国际电工委员会IEC
- 发布日期:
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
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