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Installation adjustment mode
8-4 5975996 BARCOGRAPHICS 808s 241197
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
Press the <ENTER> key to start the CRT angle adjustment proce-
dure.
Press the <ENTER> key to continue with the second part of the CRT
projection angle adjustment.
Press the <ENTER> key to continue with the crosshairs alignment.
Press the <EXIT> key to return to the previous 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.
Press the <ADJUST> key 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 the <ENTER> key to continue with blue and green crosshairs.
Press the <EXIT> key to return to the CRT projection angle adjust-
ment menu.