Planar PD7170 User Manual download pdf (Page 58)

Operation

44 Planar PD7170 Installation/Operation Manual

PREL

MINA

Brightness: On your external test pattern source, select a PLUGE pattern. (PLUGE

is an acronym for “Picture Line-Up Generation Equipment.”)

Figure 4-3 shows a

typical PLUGE pattern.

Figure 4-3. 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 Main menu. Use the or buttons to adjust the level

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 from the Main menu. Use the or buttons to adjust the

contrast up until the top two bars become almost the same brightness, then

down just until the brightness change between these bars is consistent with the

other bars.

Below Black

bove Black

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Planar PD7170 User Manual Page 58