As well as reliable hardware, the PM3000ACE uses proven and proprietary techniques to ensure reliable measurements:
Unique frequency detection techniques to determine the frequency of the applied voltage and current. The PM3000ACE does NOT use simple zero-crossing techniques which provide inaccurate results on noisy and distorted waveforms.
Simple calculation of watts and rms volts and amps according to classical textbook definitions.
Provides accurate results when the waveform is not a sinusoid. Accurate with crest factors up to 20.
Discrete Fourier Transform determines harmonics up to the 100th. The PM3000ACE does NOT use fast fourier (FFT) algorithms. FFTs are prone to errors that must be corrected using windowing techniques.
Special PWM motor-drive and power transformer test modes. Set up the analyzer at the touch of a button.
