In the inverter conversion efficiency test. Ainuo provides high power, high measurement accuracy, multi-channel direct measurement professional equipment. It can realize multiple tests of voltage, current, power, efficiency and power factor of inverter input and output by one instrument. PV simulation source is equipped with professional simulation software to complete MPPT efficiency test under various regulations EN50530/SANDIA/NB-T32004/CGC-GF004/CGC-GF035; simulate I-V curve under different temperature and illumination.