Christie HAL Series User Manual page 12


Correct horizontal position of the projector can ensure that the image is
positioned properly on the screen. With any lens installed, the image can be
manually offset left or right by a distance of up to 25 pixels (Figure 2-9). Turn
the horizontal offset adjustment knob on the top edge of the projector as desired.
Figure 2-9. Horizontal Offsets, All DLV 1280 Lenses

The vertical position of the projector in relation to the screen also depends on the
size of the screen and the lens type. Correct vertical position ensures that the
image will be rectangular in shape rather than keystoned (having non-parallel
sides). Depending on the type of lens you are using, the image can also be offset
up or down by turning the vertical offset adjustment knob on the top edge of the
projector.
The number of pixels by which you can raise or lower an image are listed in
Table 2-3. In addition, refer to Figure 2-10 to see how these pixel offsets affect
the placement of your image. If your projector is inverted, such as with a ceiling
-mounted projector, turn the illustration upside-down.
Table 2-3. Vertical Offset Ranges, in Pixels
2:1 - 3:1 zoom (standard)
1.2:1 fixed (opt.)
1.5:1 - 3:1 zoom (opt.)
3:1 - 7:1 zoom (opt.)
NOTE: If you cannot raise or lower the image enough, or if the image becomes
keystoned or exhibits uneven brightness, the projector is probably too high or
low in relation to the screen.
INSTALLATION & SETUP
-25 to +366
fixed @ 0, 25 pixels
±
-25 to +512 pixels
-25 to +512 pixels
DLV 1280
User's Manual
2-9