(1) Chinese characters display the same phase or different phase, lead or lag, and a voice prompt.
  (2) Figures display phase angle from 1 degree to 360 degrees, and has intuitive phase diagram display.
  (3) It can display voltage waveform collected by X, Y, to facilitate analysis the operator to analyze and prevent the miscarriage of justice.
  (4) It can display the amplitude ratio, which used to analyze the voltage proportional relationship.
  (5) With automatic calibration function, to calibrate the sampling phase and amplitude errors.
  (6) Host, submachine powered by a rechargeable lithium battery.
  (7) 5 to 10 times capture rate per second, waveform dynamic real-time updates.
  (8) CRC data checking, the error data affected by the interference is automatically discarded, to prevent miscarriage of justice caused by false data.
  (9) Sub-machine can work in low-power sleep mode, wake-up by the host to send data, lower power consumption.