GB 21520-2015: Translated English of Chinese Standard. GB21520-2015: Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Computer Monitors
https://www.chinesestandard.net, 17 août 2019 - 17 pages
This Standard specifies the technical requirements, the calculation of per unit time energy consumption, the calculation of energy efficiency, and testing methods and inspection rules for computer monitors (hereinafter referred to as monitors) for general purposes. This Standard is applicable to liquid crystal display (LCD) for computers; it is also applicable to display equipment, whose main function is computer display, and is equipped with a tuner/receiver.
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Annex B Normative Testing Methods for Horizontal Viewing Angle Intrinsic
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accordance with Formula additional functions applicable Atmospheric pressure batch of products calculated in accordance Chapter China color gamut computer monitors conditions stipulated Connect the monitor contrast ratio Department determined distinguished document duration Energy Conservation energy consumption Energy Efficiency Grades Energy efficiency test Enhance-performance Display entered Environmental equals Evaluating Values expressed external power supply factory field signal Figure follows GB/T Grade-3 horizontal viewing angle illuminance inspection intrinsic resolution least satisfy 0.2 less luminance meter Meanwhile measurement range measurement result Minimum Allowable Values mode refers monitor to power position Power Meter power of sleep qualified requested requirements respectively rounded-off value satisfy the requirement screen shut signal Sleep Mode Power Standard Display supply and test Table Technical Temperature test conditions test equipment test procedures test signal Testing Methods type inspection unit time energy utilize external power Values of Energy versions vertical white grayscale