Barco Galaxy 12 High Brightness+ R9040370, Owner'S Manual

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3. Installation Guidelines
3.7.2 Lens Selection
How to select a lens?
1. Determine the required screen width.
2. Determine the approximate position of the projector in the projection room with regard to the screen and measure the projector-
screen distance (PD).
3. Use the lens formulas to find the best corresponding PD with regard to the measured projector-screen distance for the required
screen width.
3.7.3 Lens Formulas
Lens Formulas
Metric formulas (meter) Inch formulas (inch)
TLD (0.8:1) HB* PD=0.77xSW+0.05 PD=0.77SW+1.97
TLD (1.2:1) HB* PD=1.11xSW-0.01 PD=1.11xSW-0.39
TLD (1.6–2.0:1) HB* PD
min
=1.47xSW-0.09
PD
max
=1.85xSW-0.13
PD
min
=1.47xSW-3.54
PD
max
=1.85xSW-5.12
TLD (2.0–2.8:1) HB* PD
min
=1.85xSW-0.17
PD
max
=2.62xSW-0.24
PD
min
=1.85xSW-6.69
PD
max
=2.62xSW-9.45
TLD (2.8–5.0:1) HB* PD
min
=2.58xSW-0.16
PD
max
=4.70xSW-0.38
PD
min
=2.58xSW-6.30
PD
max
=4.70xSW-14.96
TLD (5.0–8.0:1) HB* PD
min
=4.52xSW-0.01
PD
max
=7.53xSW-0.29
PD
min
=4.52xSW-0.39
PD
max
=7.53xSW-11.42
Lens program to calculate the projector distance is available on the BARCO web side :
http://www.barco.com/projection systems/customer services/lens program.asp
3.7.4 Adjusting the TLD (1.2:1) Lens
How to adjust the TLD (1.2:1) lens?
1. Is the lens aperture barrel (A) set to F2.5?
If yes, This is the correct aperture setting to use the lens on the projector, adjusting is not necessary.
If no, Continue with step 2 to preform the adjustment.
2. Loosen the hexagon screw (B). (image 3-9)
3. Rotate the aperture barrel (A) until the F2.5 arrow matches the arrow on the body image 3-9.
4. Secure the position of the barrel by tightening the screw.
Image 3-9
Loosen the hexagon screw
R5976780 GALAXY SXGA+ SERIES 14/10/2005 19