Barco R9002139 - Manual (Page 27)

Random Access Adjustment Mode
6-6 5975039 BARCOVISION 508 071298
Warning : In order to ensure maximum CRT longevity and
to avoid CRT damage, do not shift the raster outside the
phosphor area of the CRT.
forbidden area
projected raster
crt faceplate border
phosphor border
To start the adjustment, use the control disc to highlight Raster shift
and press ENTER to display the green raster on the phosphor.
correct raster position
wrong raster position
Press EXIT to return to the Geometry menu.