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提出了一种理论计算的新方法，它可根据数字记录仪的指数波响应计算冲击电压的数字测量误差。利用这种方法，计算了冲击电压峰值和波前时间的数字测量误差，并分析了误差的影响因素和变动范围。最后，测量误差的计算结果与实测误差作对比检验，证实了这种理论计算方法在实际应用中是有效的。
A new method of theoretical calculation is proposed, which can calculate the digital measurement error of impulse voltage according to the exponential wave response of digital recorder. Using this method, the digital measurement error of peak voltage and wavefront time of impulse voltage is calculated, and the influencing factors and range of error are analyzed. Finally, the comparison between the calculation result of measurement error and the measured error proves that the theoretical calculation method is effective in practical application.