8’ color touch screen, easy to operate Can test three energy meters at the same time. Can test meter’s daily timing error Can output 2-63 harmonics RS 232, RS 485, USB, WIFI communication ports Can test all kinds of single phase/three phase active/reactive static or mechanical meters Manual or auto calibrates the basic error, creeping, starting, and deviation of energy meters. Variables influence tests on the voltage, frequency, harmonic, reverse sequence, voltage unbalance and etc Can conduct the wave form test of meter type test, such as phase trigger, series pulse tripping and etc