... active power meter & reactive power meter, phase meter.This calibrator is composed of 3 parts: microcomputer control system, signal ... digitally;2.5. Input operation displayed directly by the monitor;3 Main Feature3.1. Integrated meter calibrating power supply ... Simple calibrating operation, convenient for user. 4 Technique Parameter4.1. Calibrator's synthetic error: Power class 0.1; Voltage & current ...