... . With class AAA light source, double probes touch between up and down,power controlled by a microcomputer,LCD screen display,Pulse ... pulse width can be adjusted,double flash for testing Rsh and Rs,and the combination of the sub-file.The perfect accurate ... FF,Eff, Rs, Rsh, Iwork, light intensityTest modeTest and classify 10 classes and save to the special document automatically. Max testing area200mm ...