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Contrast, 4. typical gray bar pattern for adjusting contrast, Pre l iminar y – Runco PL-61DHD User Manual

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Operation

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Runco PlasmaWall Owner’s Operating Manual

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PLUGE patterns vary but generally consist of some combination of black, white and gray
areas against a black background. The example above includes two vertical bars and four
shaded boxes.

Select Brightness from the Picture menu and press ENTER. Adjust the brightness so that:

• The darkest black bars disappear into the background.

• The dark gray areas are barely visible.

• The lighter gray areas are clearly visible.

• The white areas are a comfortable level of true white.

• The image contains only black, gray and white (no color).

Contrast: On your external test pattern source, select a stepped, gray-bar pattern like the
one shown in Figure 4-4.

Figure 4-4. Typical Gray Bar Pattern for Adjusting Contrast

Select Contrast and press ENTER. Adjust the contrast to a point just below which the
white rectangle starts to increase in size.

Brightness and contrast controls are interactive. A change to one
may require a subtle change to the other in order to achieve the
optimum setting.

Note