Runco VX-3000D operation manual CIE 1931 Chromaticity Diagram

Operation

If excess ambient light washes out the image and it becomes difficult or impossible to see details in dark areas, lower the gamma setting to compensate. This improves contrast while maintaining good details for blacks. Conversely, if the image is washed out and unnatural, with excessive detail in black areas, increase the setting.

•Lamp: Select Lamp from the Display Color menu to adjust the projector lamp brightness.

•Power (170W or 200W): To supply a constant wattage to the lamp, select Power (170W or 200W) from the Lamp menu to set the lamp power level. You can choose to run the lamp as bright as possible (200 watts; this is the default setting) or you can choose the lower setting (170 watts). Generally, lower lamp output prolongs the life of the lamp, but decreases brightness.

•Color Temp: Select Color Temp from the Display Color menu to adjust the color temperature. Color temperature establishes the “color of gray” by adjusting the 75% white point to various color points.

What are “color points?” A “color point” is an x/y coordinate pair that defines a color’s location on the standard CIE chromaticity graph, shown in Figure 4-7.(CIE stands for “Commission Internationale de l’Éclairage” (International Commission on Illumination), the organization responsible for color measurement and management standards.)

1.0
y
0.9
0.8
0.7
0.6
0.5
0.4			10000	8000	6667	5147	5000	4000	3333	2857	2500	2222	2000
					D50
			D65
0.3			D93
0.2
0.1
0.0																	x
0.0	0.1	0.2	0.3					0.4			0.5		0.6	0.7	0.8	0.9		1.0

Figure 4-7. CIE 1931 Chromaticity Diagram

•Mode: With the VX-3000d, two color temperature adjustment modes are available: Simple or Advanced. The two modes are mutually exclusive; when you select the Simple mode, the Advanced selection in the Color Temp menu is grayed out. Likewise, when you select Advanced, the Simple selection is grayed out.

VX-3000d Series Installation/Operation Manual 75