Runco D-73d Ultra Installation & Operation Manual page 88

Operation
Brightness: On your external test pattern source, select a PLUGE pattern. (PLUGE is
an acronym for "Picture Line-Up Generation Equipment.") Figure 4-2 shows a typical
PLUGE pattern.
Below Black
Above Black
Figure 4-2. Typical PLUGE Pattern for Adjusting Brightness
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 4-3.
Figure 4-3. 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
Note
may require a subtle change to the other in order to achieve the
optimum setting.
72 D-73d Series Installation/Operation Manual