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前言在使用高频或超高频电压表(以下统称电压表)对信号电压进行测量以及用标准电压表对电压表进行检定时,电压表存在其指示值木能随信号电压的增加成比例地增加的现象,这现象说明电压表存在线性误差。这线性误差给电压表频响检定带来影响,使两种检定方法检定结果不一样,当被检电压表频率附加误差接近误差极限时,可能得出合格与不合格的不同结果,这是值得引起注意的。本文就电压表线性误差及其对频响检定的影响予以分析。一、电压表的线性误差
Foreword In the use of high frequency or UHF voltmeter (hereinafter referred to as the voltmeter) to measure the signal voltage and voltmeter with a standard voltmeter calibration, the voltmeter there is an indication of its value with the increase of the signal voltage can be increased Increasing phenomenon, this phenomenon shows that the voltmeter linear error. This linear error to voltage meter frequency impact test, so that the two test methods test results are not the same, when the frequency of the inspected voltmeter error is close to the error limit, you may get different results qualified and unqualified, it is worth Attention. This article analyzes the linearity error of the voltmeter and its influence on the frequency response verification. First, the linearity of the voltmeter error