IT8600 has an adjustable frequency of 45 Hz ~ 450 Hz. The unique oscilloscope waveform display function of the IT8600 can display input voltage & current as a waveform. It is equipped with measurement modes for different parameters such as inrush current, peak value, effective value, PF (power factor). Voltage harmonics measurement capacity is up to the 50th. The built-in RS232, GPIB, LAN and USB communication interfaces are designed for reliable and fast control.