说明：  用微型计算机控制锁相环(PLL)可对计量光栅信号进行数字倍频 用这种挂 术产生的角度定标脉冲去量度齿轮侍动链误差比用时钟脉冲夸理，布助于蓰壹考粤 仪器的动态检测精度．
(Phase-locked loop with a micro-computer control (PLL) can be grating on the measurement of digital harmonic signal generated with this hanging point calibration technique to measure the pulse error Gear paternity action chain management than the clock pulse boast, cloth help Xi Yi Dynasty Guangdong instrument dynamic detection accuracy.)