... &meets inter/national standard toward ele-test. MEASUR PARAMETER:1. Input: Vrms, Irms(10A), W, PF, Hz, tatal harmonic and ... oscillatory frequency3. Startup: Measure the changing curve and data of input voltage, current, power, output lamp voltage, lamp current and ... 0-10 minutes4. Accuracy: input:(+-0.4% reading +0.1%range+1 digit) output: class 25. Interface RS-232C communication with PC, printing ...