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读了《电子测量技术》89年第二期,第三期刊登的李箴贻、孙续两同志关于计数器±1误差的讨论文章后,很受启发,使自己加深了对这一问题的理解。下面想就自己的认识,谈点看法,以供参考。对《电子测量》(第二版)教材(以下简称为“教材”)论述±1个字误差问题中的“…当主门开启时间T接近甚至等于被测信号周期T_x的整数(N)倍时,此项误差为最大,…”及用图1(a)、(b)来说明当△t→0时可能计数结果为N+1=7个数,或为N-1=5个数的结论,容易让人理解为:
After reading the discussion articles on the ± 1 error of the counter by Li Zhenyi and Sun Xuang, published in the second and third installments of Electronic Measurement Technology in 1989, he was greatly inspired to deepen his understanding of this issue. Below to think about their own, talk about the point of view for reference. The “... when the main door opening time T is close to or even equal to the integer (N) times of the signal period T_x to be measured” in “Electronic Measurement” (second edition) textbook (hereinafter referred to as “textbook” , The error is maximum, ... "and Fig.1 (a), (b) is used to illustrate the possible counting result of N + 1 = 7 when △ t → 0 or N-1 = 5 Conclusion, easy to understand as: