Barco DATA 708 installation manual CRT projection angle adjustment

Installation Adjustments

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. 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.

Ensure that the rasters are centered on the CRT face.

Press ENTER to start the CRT angle adjustment procedure. A crosshairs (green and red) will be displayed on the screen.

ENTER continues to the crosshairs alignment.

EXIT returns to raster shift adjustment

ADJUST returns to operational mode.

CRT PROJECTION ANGLE

ADJUSTMENT

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

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.

<ENTER> to continue

<EXIT> to return

Projection angle correctly aligned	The same projection angle is mis-aligned for new
for screen width SW1	screen width SW2. Re-alignment is necessary.
	Each screen width change requires readjust-
	ment of the projection angle.

SW1

SW2

(SW2>SW1)

5975987A BARCODATA 708 260597 7 - 7