Ac sampling measurement unit has better accuracy and stability as the online measuring instrument of the electrical parameters of power network.

交流采样测量装置作为电网电测量参数的在线测量仪器，具有较好的准确度和稳定性。

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AC electrical dynamometer is an important device for engine test with easy-controlled testing conditions, easy-collected and managed parameters as well as high measuring precision.

目前，交流电力测功机是进行发动机性能试验的重要装置，其优点在于试验条件容易控制，参数便于采集处理，测量精度较高。

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However, the traditional measuring instruments such as DSO, DMM, Logic Analyzer have only focus on a certain number of signal or electrical parameters.

然而，传统的测量仪器如示波器，万用表，逻辑分析仪等都只是针对某一些信号或者电参数的测量。

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