The errors of harmonic wave analysis and direct sampling in electric parameters measurement are analyzed. The method to minimize errors is presented.

分析了电力参数微机监测中的直接采样计算法与谐波分析法的误差，并提出了减小误差的方法。

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At present, multi-electric parameters measurement instruments have a far-ranging application in our industry, and many research departments and companies in domestic have developed them.

目前，多功能电量测试仪在我国工业中具有非常广泛的应用，国内的许多研究部门和仪器生产企业曾先后开发了电参量测量的仪器。

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So, it has very wide applied fields and very important theoretic meaning to study, design and develop audio-frequency measurement technique to measure audio-frequency electric parameters.

因此，研究中频电参量的测量方法，设计和开发中频范围的电参量测量仪器，不但具有广泛的应用领域，而且还具有十分重要的理论意义。

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