本文介绍的暂称为“环形延时链法”的测定办法,精确地测定了磁盘每旋转一周所产生的13440个等分伺服脉冲彼此间的误差.用由反相门构成的延迟链替代高频器件,产生多个相位两两相差数毫微秒的高频脉冲信号串.这些脉冲信号串送往一个计数器组分别去进行计数.把各计数器计得的脉冲数(或脉冲数的余数)与标准周期所应计得的脉冲数(或脉冲数的余数)进行比较,从而确定误差值. In this paper, we tentatively call the “ring delay chain method” measurement method, accurately measuring the error of 13440 aliquots of servo pulses produced by each revolution of the disk, and replacing the high Frequency device generates a plurality of high-frequency pulse train signals whose phases are different by a few nanoseconds from each other, and these pulse train signals are sent to a counter group for counting, respectively. The number of pulses counted by each counter (or the remainder of the number of pulses) The number of pulses (or the remainder of the number of pulses) to be counted for the standard period is compared to determine the error value.