Christie 130-002103-01, User Manual

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Setup Procedures
Matrix StIM™ WQ/SIM WQ User Manual 11
020-100883-01 Rev. 2 (06-2013)
Determine Vertical and Horizontal Position
The projection lens and the screen type determine the vertical and horizontal position of your
projector in relation to the screen. Ideally, you should position the projector perpendicular to the
screen to make the image appear rectangular instead of keystoned (trapezoidal). You can offset
vertical position of the image (move it above or below the optical axis) by adjusting the lens mount.
The type of projection lens you install determines the amount of available vertical offset. Vertical
offset can be expressed as the percent of half the image height or the number of pixels of shift from
lens center.
1. Offsets are subject to ±7% centering tolerance.
2. % offset is defined as:
The horizontal position of the image can also be offset (moved to the left or right of the optical
center) by adjusting the lens mount. The amount of horizontal offset available depends on the lens
installed and if the image has already been vertically offset. Horizontal offset can be expressed as the
percent of half the image width or the number of pixels of shift to one side of lens center.
% Offset = # of pixels of offset x 100
half vertical panel resolution
1280 pixels
display to left
of lens center
640 pixels
to left of
lens center
1280 pixels
display to right
of lens center
1920 pixels displayed to
right of lens center or 480 pixels
of shift to the right of lens center
lens center lens center
0% Offset 50% Offset
Shaded area = projected area
In this example, no offset is applied.
Therefore, half of the image appears to the
left of lens center and half appears to the right.
In this example, 50% offset is applied.
Therefore, 3/4 or 75% of the image
appears to one side of the lens center.