介绍扩展DMM功能的设计方案，使其能进行在线测量和能测量信号的频率、高频信号的有效值及自动转换量程。
A solution of expanding DMM's function is introduced, it can measure on-line, can measure signal's frequency, HF's RMS and auto-range transfer.
介绍扩展DMM功能的设计方案，使其能进行在线测量和能测量信号的频率、高频信号的有效值及自动转换量程。
A solution of expanding DMM's function is introduced, it can measure on-line, can measure signal's frequency, HF's RMS and auto-range transfer.
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