Optical Lens Focusing - Barco R9000740 Installation Manual

Optical lens focusing

The optical focusing procedure is
performed separately for each lens.
The appropriate CRT will be switched
on as the user proceeds through the
optical focusing adjustment se-
quence.
Each lens has two focus adjust-
ment points, one at the rear of the
lens and one at the front.
center of the projected image is
focused by loosening the wing nut
at the rear end of the lens and
rotating the lens barrel until the
center of the image is clearly fo-
cused. The corners of the pro-
jected image are focused by loos-
ening the wing nut at the front end
of the lens and rotating the lens
barrel until the corners of the image
are clearly focused. Repetition of
these adjustments may be neces-
sary to optimize optical focusing.
Press ENTER key to continue.
XXXX = respectively red, green and blue.
7-10
INSTALLATION ADJUSTMENTS
The
ENTER continues to Raster centering.
EXIT returns to scheimpfug adjust-
ment
ADJUST returns to operational mode.
Center
focusing
5975248 BARCOVISION 701 MULTIMEDIA 070597
OPTICAL LENS FOCUSING
1. LOOSEN THE NUT ON THE
REAR OF THE XXXX LENS,
ROTATE THE LENS BARREL
TO FOCUS THE CENTER
OF THE IMAGE,
THEN TIGHTEN THE NUT
2. LOOSEN THE NUT ON THE
FRONT OF THE XXXX LENS
AND ROTATE THE FRONT
SECTION OF THE LENS TO
FOCUS THE CORNERS OF THE
IMAGE, THEN TIGHTEN THE NUT.
<ENTER> to continue
<EXIT> to return
Corner
focusing