ImageQuest Q770 - Geometric Distortion

Q770 Technical Service Manual
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4. Geometric Distortion
All kind of Geometric Distortion
(Pincushion, Barallel, Parallelogram and Trapezoid) shall be with in 2mm boundary (to tolerance
frame) Refer to belows tolerance frame.
A
2mm B 2mm
The tolerance frame sides are parallel to the window of enclosure axes.
B
A
Data Area
5. Linearity
The linearity of an image displayed on the CRT must meet the following requirements, with
reference to figure for both X and Y axis.
• Formula : 100 = 6% overall
• Where : X1=X2=....X16
Y1=Y2=....Y12
XMax- XMin
XMax+XMin
Y1
X1
. . . . . . . .
X16
.
.
.
.
.
.
.
.
Y12
100 = 5% adjacent cells
XMax- XMin
XMax+XMin
6. Misconvergence
The display must confirm to all following requirements:
Maximum convergence error.
Area
MODEL
Q770
Horiz. Direction
Vert. Direction
A
Central circle field
of(299) mm diameter
0.3mm
0.3mm
B
All screen Area (305
229)
except Area A
0.4mm
0.4mm