this paper analyzes usual measuring errors caused by inconsistency of the input signal pulse verge and strobe signal verge in frequency measurement. it sets forth an effective solution.
研究频率测量过程中输入信号的脉沖边沿与测量设备的闸门信号边沿不一致造成的频率测量误差。
a clock or a strobe signal is used to synchronise operation of the comparator, the up-down counter 102 and the digital to analog converter 100 so as to avoid these components racing.