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6-2 Display Control Adjustments
6-2-1 Centering
Centering means to position the center point of
the display in the middle of the display area.
Horizontal size and position and vertical size and
position control the centering of the display.
Adjust the horizontal size and vertical size to their
optimal settings: 267 mm (H) x 200 mm (V)
Adjust the horizontal position and vertical
position to within 4.0 mm of the center point of
the screen.
l A - B l ≤ 4.0 mm.
l C - D l ≤ 4.0 mm.
C
A
D
Figure 6-3. Centering
6-2-1 (a) HORIZONTAL SIZE ADJUSTMENT
CONDITIONS
Scanning frequency:
Display image:
Brightness:
Contrast:
Adjust the horizontal size of the display pattern to
267 mm. (Tolerance ± 3 mm.)
6-2-1 (b) VERTICAL SIZE ADJUSTMENT
CONDITIONS
Scanning frequency:
Display image:
Brightness:
Contrast:
Adjust the vertical size of the display pattern to
200 mm. (Tolerance: ± 3 mm.)
6-2-1 (c) HORIZONTAL POSITION ADJUSTMENT
CONDITIONS
Scanning frequency:
Display image:
PROCEDURE
Center the test pattern on the raster.
CKE5507L/LM
DISPLAY AREA
B
EDGE OF BEZEL
53.7 kHz/85 Hz
Crosshatch pattern
Maximum
Maximum
53.7 kHz/85 Hz
Crosshatch pattern
Maximum
Maximum
53.7 kHz/85 Hz
Crosshatch pattern
6-2-1 (d) VERTICAL POSITION ADJUSTMENT
CONDITIONS
Scanning frequency:
Display image:
Center the test pattern on the raster.
6-2-2 Linearity
Linearity affects the symmetry of images as they
appear on the screen. Unless each row or column
of blocks in a crosshatch pattern is of equal size,
or within the tolerances shown in Tables 6-1 and
6-2, an image appears distorted, elongated or
squashed.
The formular of linearity (%)
2 x (Max – Min)
=
Max + Min
Table 5-1. Standard Modes Linearity: 800x600/85Hz
Standard Timing Modes
Each block (10 %)
Table 5-2. Other Modes Linearity: VGA, SVGA, XGA,
MAC, etc.
Supported Timing Mode
Each block (14 %)
6-2-3 Trapezoid Adjustment
CONDITIONS
Scanning frequency:
Display image:
Make the the test pattern rectangular.
| A - B | < 4 mm
A
B
Figure 6-4. Trapezoid
6 Alignment and Adjustments
53.7 kHz/85 Hz
Crosshatch pattern
x 100
Difference between
adjacent blocks (4 %)
Difference between
adjacent blocks (5 %)
53.7 kHz/85 Hz
Crosshatch pattern
A
B
6-3
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