Solar simulator standards are set by governing bodies such as ASTM, IEC, and JIS and are used to determine the quality and accuracy of the unit's illumination. The specific standards that govern solar simulation are JIS-C8912, IEC 60904-9, and ASTM-E927-10. This technical note. . Solar simulation – reproducing sunlight – is no different, having standards that specify the requirements for solar simulators, and lay out the rules determining whether a solar simulator is Class AAA, Class ABA, Class CBC, and so on. The three organizations that provide solar simulator standards are: While there are subtle differences between the standards, their. . This specification provides the performance requirements and parameters used for classifying both pulsed and steady state solar simulators intended for indoor testing of photovoltaic devices (solar cells or modules), according to their spectral match to a reference spectral irradiance. . A solar simulator (also artificial sun or sunlight simulator) is a device that provides illumination approximating natural sunlight. It can be used for the testing of any processes or. . IEC 60904-9, Photovoltaic devices - Part 9: Solar simulator performance requirements. JIS C 8912, Solar simulators for crystalline solar cells and modules.