GB/T 5170.9-2017 "Environmental test equipment inspection method, Part 9: solar radiation test equipment" specifies the inspection method of solar radiation test equipment in detail, including inspection items, required instruments and requirements, loads, conditions, methods, results and cycles, etc. The standard applies to the inspection of equipment covered by GB/T 2423.24 and Miscellaneous similar equipment. The reference documents include GB/T 2423.24 "Environmental test Part 2: Test methods, Test Sa: Simulation of solar radiation on the ground and its test guidelines" and GB/T 5170.1-2016 "Electrical and electronic products environmental test equipment inspection method, Part 1: General". The terms and definitions in the standard refer to the GB/T 5170.1-2016 to ensure the conformity and accuracy of the inspection.