The simulator of measuring system (Lead Phase or Lag Phase), phase convention (Rotating Scale or Fixed Scale) and scale direction (Contrary to Rotation or Same of Rotation), shows, during rotation, for the first turn the tachometer event (as the initial input signal for the lead phase system or the final output signal for the lag phase system) and after for the second turn the sensor event (as the final output signal for the lead phase system or the initial input signal for the lag phase system), and it is useful to visualize the phase angle (which is measured during a turn of the rotor) determined by each one of the multiple combinations. The last image is produced when the stroboscope is synchronized by the sensor, and it shows the phase angle under this condition.