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一、概述信号在多级线性电路或多级数字电路传输过程中,均会产生相位移动,造成测量误差。严重时,使被测量的数据误差加大,甚至导致错误的结果。高密度磁记录设备中,由于脉冲拥挤效应明显,软磁盘驱动器读出信号的峰点漂移更为严重致使时钟间隔不均匀,超出时钟数据分离电路允许的间隔波动范围;软磁盘驱动器主轴电机传动系统的加工和安装精度不够,会造成读出信号的瞬时抖动;软磁盘片上的某些缺陷或干扰亦可造成时钟脉冲的丢失,在分离电路中会造成分离错误。
First, an overview of the signal Multi-level linear circuit or multi-level digital circuit transmission process, will have a phase shift, resulting in measurement error. In serious cases, the error of the measured data is increased, which may even lead to wrong results. High-density magnetic recording equipment, due to the obvious pulse crowding effect, the soft disk drive read-out signal peak more serious cause the clock interval is not uniform, beyond the clock data separation circuit allows the interval of fluctuation range; soft disk drive spindle motor drive system processing And the installation accuracy is not enough, will cause the instantaneous signal readout jitter; floppy disk some of the defects or interference can also cause the clock pulse loss, the separation circuit will cause separation error.