AVOCOR AVF-6500 Series, Руководство по установке и эксплуатации

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Backlight:
The Backlight control changes the apparent brightness of the displayed image. Its effect is similar
to that of a lamp intensity control on a projector.
Gamma:
Select Gamma from the Video Settings menu and choose either 2.2 (default) or Off.
Colour Temperature:
Select Colour Temperature from the Video Settings menu to adjust the colour temperature.
Colour temperature establishes the “colour of grey” by adjusting the 75% white point to various
colour points.
• What are “colour points?”
A “colour point” is an x/ y coordinate pair that defines a colour’s location on the standard CIE
chromaticity graph, shown in Figure 4-6. (CIE stands for “Commission Internationale de
l’Éclairage” (International Commission on Illumination), the organisation responsible for colour
measurement and management standards.)
Figure 4-6. CIE 1931 Chromaticity Diagram
Select a value of from 3200K to 9600K. Higher settings produce a “bluer” picture; lower ones
impart a reddish hue to the image. To select a custom colour temperature, select User and set
the Gain and Offset as described below.
• Gain: Use the Gain controls to correct colour imbalances in the bright areas of the image. A
good way to do this is to use a test pattern consisting mostly of solid white areas, such as an
80 IRE “ window ” pattern. If the white areas contain traces of red, green or blue, decrease
the Gain for that colour.