52
DP27/27D
2.19 Raster distortion check
Checking condition
(1) Digital convergence adjustment should have been completed.
(2) Receive the cross-hatch signal (internal signal of the set is acceptable).
(3) Brightness/Contrast --- standard condition
Contrast : max
Other controls : center position
(4) Check the raster distortion specification: Value shown in the table below or less.
A ~ D
I ~ L
---Measure the winding of the outside line.
Item
Symbol
51”
57”
65”
Top/Bottom pincushion distortion
A,B
±
6
±
6
±
6
Right/Left pincushion distortion
C,D
±
4
±
4
±
5
Center line
Vertical line
E
6
6
6
tilt
Horizontal line
F
6
6
6
Center line
Vertical line
G
±
3
±
4
±
4
winding
Horizontal line
H
±
3
±
4
±
4
Trapezoidal distortion
Vertical line
I,J
5
5
5
Skew distortion
Horizontal line
K,L
6
6
6
(unit: mm)
G
I
J
D
C
A
B
F
E
K
H
L
BACK TO ADJUSTMENTS
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