Vidikron Vision 10, Vision 12 Effect of X and Y Coordinates for Color Temperature, Adjustment

Operation

Color Temperature: To adjust the color temperature, select Color Temp from the Picture Adjust menu and press ENTER. (Color temperature defines the “color of gray.”) The range is from 5,000K to 10,000K, in increments of 500K. The default setting, 6,500K, is appropriate for most situations. Higher settings produce a “bluer” picture; lower ones impart a reddish hue to the image.

For more precise control over the color temperature, you can adjust the x and y coordinates for gray. These define its location on the standard CIE chromaticity graph, shown in Figure

4-9.(CIE stands for “Commission Internationale de l’Éclairage” (International Commission on Illumination), the organization responsible for color measurement and management standards.) Changing either or both of these numbers changes the hue of gray, within a narrow range above or below the selected color temperature; refer to Table 4-2.

Table 4-2. Effect of X and Y Coordinates for Color Temperature

X-adjustment Y-adjustment Result

red hues

blue hues

green hues

yellow hues

To restore the default color temperature, select Reset Color Temp and press ENTER. Press ENTER again to confirm.

Color Temp	6500K
x		0
y		0
Reset Color Temp

1.0

y

0.9

0.8

0.7

0.6

0.5

0.4

D50

D65

	10000 8000	6676	5147	5000
0.3	D93

4000 3077 2500 2000

0.2
0.1
0.0
0.0	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	x	1.0

Figure 4-9. CIE 1931 Chromaticity Diagram

Vidikron Vision Model 10/Model 12 Owner’s Operating Manual 41