Test methods for electrical materials, printed boards and other interconnection structures and assemblies. Part 5-1. General test methods for materials and assemblies. Guidance for printed board assemblies
State system for ensuring the uniformity of measurements. State verification schedule for means of measuring spectral density of radiance, spectral density of radiant intensity, spectral density of irradiance, radiant intensity and irradiance in the wavelength range of 0,2...25,0 µm