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4 Alignment and Adjustments
4-2-3 (c) HORIZONTAL POSITION ADJUSTMENT
CONDITIONS
Scanning frequency:
54 kHz/85 Hz
Display image:
Crosshatch pattern
Use control bar after selecting "H-POSITION" in
left menu to center the horizontal image on the
raster.
4-2-3 (d) VERTICAL POSITION ADJUSTMENT
CONDITIONS
Scanning frequency:
54 kHz/85 Hz
Display image:
Crosshatch pattern
Use control bar after selecting "V-POSITION" in
left menu to center the vertical image on the
raster.
4-2-4 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 Table 4-1 an
image appears distorted, elongated or squashed.
Horizontal Linearity = 2x
Y max-Y min
Vertical Linearity = 2x
Y max+Y min
Table 4-1
Adjacent Linearity Entire Linearity
Preset mode
Pre-load mode (48kHz~)
Preset Mode : 54KHz / 85Hz
Pre-load Mode : Refer to Timing Chart
4-2-4 (a) HORIZONTAL LINEARITY ADJUSTMENT
CONDITIONS
Scanning frequency:
54 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Maximum
Contrast:
Maximum
To adjust the Horizontal Linearity, refer to Table
4-1 for the tolerance range.
Increase or decrease H_LIN to optimize the
image.
4-4
X max-X min
x100
X max+X min
x100
≤ 4%
≤ 10%
≤ 5%
≤ 14%
4-2-4 (b) VERTICAL LINEARITY ADJUSTMENT
CONDITIONS
Scanning frequency:
54 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Maximum
Contrast:
Maximum
To adjust the Vertical Linearity, refer to Table 4-1
for the tolerance range.
Use control bar after selecting "V-LINEARITY
BAL" in left menu to optimize the image.
4-2-5 Trapezoid Adjustment
CONDITIONS
Scanning frequency:
54 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Maximum
Contrast:
Maximum
Use control bar after selecting "TRAPEZOID" in
left menu to make the image area rectangular.
| A – B | < 4 mm
A
B
Figure 4-4. Trapezoid
4-2-6 Pinbalance Adjustment
CONDITIONS
Scanning frequency:
54 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Maximum
Contrast:
Maximum
Use control bar after selecting "PINBALANCE" in
left menu to optimize the image.
| D1 |, | D2 | ≤ 2.0 mm
D1
D2
Figure 4-5. Pinbalance
A
B
D1
PN15VT/VO
PN15HT/HO
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