本文件适用于石英晶体元件激励电平相关性(DLD)的测量。本文件规定两种试验方法(A和C)和一种基准测量方法(方法B)。方法A以IEC 604445的π型网络为基础,适用于本文件所覆盖的整个频率范围。基准测量方法B依据IEC 604445或IEC 604448的π型网络或反射法为基础,适用于本文件所覆盖的整个频率范围。方法C是振荡器法,适用于固定条件下大批量基频石英晶体元件的测量。注: 本文件规定的测量方法不仅适用于AT切型,也适用于其他晶体切型和振动模式,如双转角切型和振动模式(IT,SC)和音叉晶体元件(通过使用高阻抗测试夹具)。
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This standard specifies the requirements,test methods,inspection rules,sign,packaging,transport and storage of liquid crystal displaying quartz watches(hereinafter referred to as “the LCD watch”).
This standard is applicable to the LCD watch with a crystal oscillator,nominal working voltage of DC 1.50 V or DC 3.0 V,and display of time and date or other additional functions.The LCD watch that is not worn on the hand and the movement of the LCD watch may also refer to it.
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