一、引言基本误差和频率附加误差是电子电压表检定中的主要项目。基本误差△是指在正常条件下(此时信号源的信号频率为定度频率f_o)电子电压表的误差,频率附加误差△_f是在信号源频率为非定度频率f(其他条件不变)时,电子电压表指示值偏离正常条件下的指示值的变动量。本文介绍电子电压表的△、△_f和非定度频率下的实际误差δ_f间的关系式,以及已知△、△_f对电压表在非定度频率信号下的测量结果进行适当的修正。二、△、△_f与δ_f的关系在正常条件下,△的定义如下式: I. INTRODUCTION The basic error and frequency of additional error is the main item in the electronic voltmeter verification. Basic error △ refers to under normal conditions (at this time the signal frequency of the signal source for the fixed frequency f_o) electronic voltmeter error frequency additional error △ _f is the source frequency of non-fixed frequency f (other conditions remain unchanged ), The indication of the electronic voltmeter deviates from the variation of the indicated value under normal conditions. This paper introduces the relationship between the △, △ _f of the electronic voltmeter and the actual error δ_f at the unsteady frequency, and the known △, △ _f to correct the measurement result of the voltmeter under unscheduled frequency signal. Second, △, △ _f and δ_f relationship Under normal conditions, △ is defined as follows: