Tektronix PA4000 Power Analyzer, when paired with a Tektronix oscilloscope, provides a complete test solution for power electronics design and characterization. PA4000 offers consistently high measurement accuracy, even under challenging conditions such as high distortion or wide voltage/current variation. Unique "Spiral Shunt" technology maximizes stability over changes in temperature, current level, frequency, and other factors. Two shunts are included on each channel - one for current measurements up to 1A, for precise low-current measurements, and one for current measurements up to 30A, for higher-current measurements. Unique high-speed digital signal processing algorithms track power cycles accurately, even in the presence of transients and noise. Inputs are tolerant of the high crest factors commonly seen in many of today's power electronic devices. Learn more.