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See Chinese contents: SJ/T 11891-2023 SJ/T 11891-2023: Energy efficiency measurement method for LED displays
This document specifies the test conditions, test procedures, calculation methods for the energy efficiency of LED displays. This document is applicable to the test of LED displays with the same upper and lower viewing angles and left and right viewing angles that work normally under the grid voltage. For LED displays with asymmetric viewing angles, it can make reference to this standard.
