The IEC 60068-2-9 standard provides a test method for simulating the effects of solar radiation on equipment and components. The standard describes how to reproduce the spectral power distribution and intensity of solar radiation under controlled environment conditions to test the performance of equipment in the Earth's surface environment. Although the standard focuses primarily on the effects of solar radiation, Miscellaneous environmental factors such as temperature, Humidity and wind speed also need to be considered. The standard is often used in conjunction with IEC 68-2-5 to comprehensively assess the durability and performance of equipment in a simulated environment.