Barco G50 Installation Manual page 54

Adjusting the projected image
1 Fixed ring
2 Floating ring
• Manual adjust the floating ring before adjust Zoom & Focus for better optical performance.
• Scale on floating ring shows the projection distance.
• The projection distance is from projector lens to screen.
Example:
When the distance between screen and projector lens is 1.4 meter, adjust floating ring scale to "1.40" to have
better performance.
Special Boresight tools required for G lens (0.65 - 0.75 : 1)
lens.
Boresight extenders (with red rubber ring), 3 pieces.
Boresight L shape socket tool.
Adjust Boresight
1. Is this a lens with an floating ring? E.g., G lens (0.65 - 0.75 : 1)
► If yes, install the 3 Boresight extenders on the screws ① , ② and ③.
2. If zone C is in focus on the screen, please check the focal plane of zone A.
• If clear position is just on the screen→ No need to adjust.
• If clear position is out of the screen(close to projector), rotate screw ① CCW and then screw ②&③ CW
for half amount that① rotated. → repeat until both A and C are clear. (e.g. turning ① CCW in a circle,
then turn ②&③ CW in half circle).
• If clear position is in the screen(far from projector), rotate screw ① CW and then screw ②&③ CCW for
half amount that① rotated. → repeat until both A and C are clear.
Image 5–7
Note: This process may cause the other areas of the image to slide out of focus. This is totally
normal.
3. If zone D is in focus on the screen, please check the focal plane of zone E.
• If clear position is just on the screen→ No need to adjust.
• If clear position is out of the screen(cloe to projector), rotate screw ② CCW and then screw ① &③ CW
for half amount that ② rotated. → repeat until both D and E are clear. (e.g. turning ② CCW in a circle,
then turn ① &③ CW in half circle)
• If clear position is in the screen(far from projector), rotate screw ② CW and then screw ① &③ CCW for
half amount that ② rotated. → repeat until both D and E are clear.
54 R5916677 /00 G50
3 . Tools are included in the box of the
3 .
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