Installation adjustment mode
8-4
5975857 BARCOGRAPHICS 1208s 220197
CRT Projection Angle Adjustment
The projection angle of the red and blue CRT's is dependent on the
desired size of the projected image. If the centers of green, blue and
red do not coincide, the CRT projection angle must be adjusted.
NOTE : never try to correct this misalignment with the shift correction
or the static convergence controls. These controls may only be
applied to correct small errors which cannot be corrected by the CRT
angle adjustment. Note: the Horizontal Shift and Vertical Shift for Red
and Blue should be set near 50%.
Be sure that the rasters are centered on the CRT faceplate.
CRT PROJECTION ANGLE
ADJUSTMENT
<ENTER> to read more
<EXIT> to return
CRT PROJECTION ANGLE IS
THE FIRST STEP OF STATIC
CONVERGENCE ADJUSTMENT.
IT IS CRITICAL THAT THE
RASTERS ARE CENTERED ON
THE CRT FACE PLATES
PRIOR TO PERFORMING
THIS STEP.
...
CRT
PROJECTION ANGLE
ADJUSTMENT
Align crosshairs
<ENTER> continue
<EXIT> to return
A B
C D
E F
G H
Press
ENTER to start the CRT angle adjustment procedure.
Press
ENTER to continue with the second part of the CRT projection
angle adjustment.
Press
ENTER to continue with the crosshairs alignment.
Press
EXIT to return to the previous menu.
Press
ADJUST to return to Operational mode.
Loosen bolts A, B, C and D to pivot the red CRT until the center of the
Red image and the center of the Green image coincide. When the
angle of the red CRT is corrected, tighten the four bolts.
Press
ENTER to continue with blue and green crosshairs.
Press
EXIT will return to CRT projection angle adjustment menu.
red crosshair
green crosshair
move the red CRT towards
the green CRT
red crosshair
green crosshair
move the red CRT to the
outside, away from the
green CRT
CRT PROJECTION ANGLE
ADJUSTMENT
<ENTER> to continue
<EXIT> to return
DURING THIS PROCEDURE,
RED ON GREEN AND THEN
BLUE ON GREEN CROSSHAIRS
WILL BE DISPLAYED
TO ALLOW THE RED AND
BLUE CRTS TO BE ALIGNED
WITH THE GREEN CRT.
LOOSEN BOLTS A AND B
TO PIVOT THE RED CRT,
AND BOLDS C AND D
TO PIVOT THE BLUE CRT.
