Navitar GNK-3828 User manual

USING YOUR KEYSTONE CORRECTION LENSES
INSTRUCTION
SHEET
Silver Centering Circle:
When fully visible, the lens is centered and
functioning as a normal lens.
Rotating Head:
Rotates image 360 degrees.
Offset Screw:
Shifts lens assembly off the center axis 3.8mm.
Locking Screw:
Locks rotating head in position to maintain
projector alignment.
Installation Procedure:
1. Be sure that all projectors are level. When
using your KC lens you are moving the
inner optical cell of the lens rather than
tipping your projector up or down as you
would normally do in a multimedia show.
Some minor adjustments of your projector
stand may be required.
2. Using the Silver Centering Circle (figure 1),
center all lenses to be used.
3. Insert lenses into projectors.
(continued on back side . . . )
Definitions for Figures 1 & 2:
Front View of KC Lens
Side View of KC Lens

1. Insert alignment slides.
2. Turn on projector(s) and focus slide image.
3. Depending on the number of projectors in your presentation,
any combination of alignments can be used. Refer to figure 5
for a few examples. figure 5
4. For center projector:
Turn unit on and focus slide on screen.
5. For top projector:
Turn unit on and focus slide on screen. Notice the image is
higher than the center image. Turn the Y axis screw on your
XYPC lens. The image will move downward. Continue until
the desired shift has been achieved.
6. For bottom projector:
Turn unit on and focus slide on screen. Notice the image is
lower than the center image. Turn the Y axis screen on your
XYPC lens. The image will move upward. Continue until the
desired shift has been achieved.
7. Use the X axis screw on all lenses if and when movement to the
left or right is desired. Continue shifting lenses off axis until
all images exactly overlap the center image.
8. Depending on the projection distance and focal length of the
lens used, fine tuning the alignment is possible by using the
projector stand adjustments.
Alignment Procedure:
Navitar, Inc.
200 Commerce Drive
Rochester, NY 14623
Phone [phone]
or [phone]
Fax [phone]
Internet: http://navitar.com
Email: [e-mail]