The chemical phosphors in your monitor determine the range of colors you see on your screen.
Do one of the following from the Phosphors menu:
• Choose the exact phosphor type used by the monitor you are calibrating. The two most common phosphor types are EBU/ITU and Trinitron.
• If the correct type is not listed but you were provided with chromaticity coordinates with your monitor, choose Custom, and enter the red, green, and blue chromaticity coordinates of the monitor's phosphors.
• If you're not sure which phosphors your monitor uses, see the monitor's documentation; contact the manufacturer; or use a color-measuring instrument such as a colorimeter or spectrophotometer to determine them.
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