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冲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。
PC sent signal via print control port and STROBE, encoder generated choosing signal and sent it to P3.2-end of single-chip to form interrupt.
PC通过打印机控制口与STROBE发送信号，译码器产生选片信号，传给单片机P 3.2端形成中断信号。
The strobe signal is not commonly associated with the signal tested.
计数式频率计的选通门一般与被测信号是不相关的。
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