GB/T 9468-2008 Active

This standard specifies the standard conditions for photometric testing, recommends testing procedures, and provides guidance for experiments in photometric laboratories and the expression of lamp performance data. For lamps whose actual testing conditions differ from the standard testing conditions, the standard gives measurement requirements for correction factors. This standard applies to photometric testing of most types of lamps. For special types of lamps designed for extremely professional facilities, which have special requirements for measurement and data expression, this standard cannot cover their characteristics. Supplementary standards should be used. These supplementary standards are referenced in the appropriate sections of this standard and, if necessary, define special requirements and measurement conditions.