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Chapter 4—Setup Adjustments
HJT Model 100 User's Guide 4-13
Figure 4.0-4 Undistorted Standard Crosshatch Test Pattern
4.3.3. Bow
NOTE: Skip this procedure if the vertical centerline is straight and the
horizontal centerline is level (refer to Figure 4.0-5 Bow Distortion on page 4-
14).
With bow distortion, the picture bends in the same direction on the edges
and in the center of the test pattern. This means that the vertical or
horizontal centerline is bowed in one (1) direction causing the entire
pattern to bend in that same direction (refer to Figure 4.0-5 on page 4-
14). Use the Standard Crosshatch test pattern to spot Bow distortion.
To correct for Bow Distortion:
1. Select the Standard Crosshatch test pattern.
2. Select B
OW
from the G
EOMETRY MENU
.
3. Use the up/down arrow keys to correct for vertical bow distortion.
Adjust to make the centerline exactly horizontal (not bending upward
or downward).
4. Use the left/right arrow keys to correct for horizontal bow distortion.
Adjust to make the centerline vertical.
5. Press E
SCAPE
/E
NTER
to exit.