The MP-160 I-V tracer is the best solution for testing individual solar cell or module characteristics in combination with a solar simulator or natural sun light. It can be found in factory quality control applications or long term performance assessment studies of modules exposed to natural conditions outdoors. The cell or module performance characteristics are determined by changing the electrical load during the I-V sweep. The radiant energy on the module energy can be measured simultaneously with the Voltage and current measurements in order to calculate to STC or equivalent standards.