The DMS-20RM Series AC voltmeters overcome previous limitations by featuring both true rms-responding inputs and an independent power supply, all in a compact unit that is size compatible with Murata popular true-rms AC ammeters. As illustrated in this slide, the DMS-20RM can be powered by an AC supply while measuring a separate AC signal. It can also be powered by measuring the same AC power source or by a DC power supply while measuring an AC signal.

