指针式精密时钟的检定,通常采用测时间间隔法和数字钟取样法,需要复杂的设备,检定时间很长。这对于精度要求不很高的钟表,上述方法显得很不经济。经过多次实验,用多用电度表校验仪来检指针式钟表,用测量瞬时日差的方法测日差,能满足精度在1秒/日以下的指针式石英钟表的校验。 1.瞬时日差的定义将任一时刻测得的钟表瞬时走时快慢推算成一天的走时误差,称为瞬时日差。计算公式为:瞬时日差=(M-M_0)×86400, Accurate pointer clock calibration, usually using the time interval method and digital clock sampling method, the need for complex equipment, test a long time. This is not accurate for the clock, the above method is very uneconomical. After many experiments, multi-purpose meter calibrator to check the pointer clock, with the method of measuring instantaneous difference to measure the difference, to meet the accuracy of 1 second / day below the pointer quartz watch calibration. 1. The definition of instantaneous day-to-day clock at any moment measured instantaneous travel time is calculated as the travel time error, known as the instantaneous day difference. The formula is: instantaneous difference = (M-M_0) × 86400,