Chapter 2
Getting Started — Setting up
46 - ENGLISH
Projection lens Model No.
Throw ratio
Aspect ratio
Projection distance (L) formula
Min. (LW)
Max. (LT)
ET-D75LE30
2.6 - 5.0:1
16:10
= 2.2121 x SD
-
0.1131
= 4.2901 x SD
-
0.1765
2.6 - 5.0:1
16:9
= 2.2736 x SD
-
0.1131
= 4.4094 x SD
-
0.1765
3.1 - 6.0:1
4:3
= 2.5046 x SD
-
0.1131
= 4.8573 x SD
-
0.1765
ET-D75LE40
4.9 - 7.9:1
16:10
= 4.2356 x SD
-
0.1577
= 6.7529 x SD
-
0.1615
4.9 - 7.9:1
16:9
= 4.3534 x SD
-
0.1577
= 6.9406 x SD
-
0.1615
5.9 - 9.5:1
4:3
= 4.7955 x SD
-
0.1577
= 7.6456 x SD
-
0.1615
ET-D75LE8
7.9 - 14.8:1
16:10
= 6.7707 x SD
-
0.3862
= 12.6858 x SD
-
0.3598
7.9 - 14.9:1
16:9
= 6.9590 x SD
-
0.3862
= 13.0385 x SD
-
0.3598
9.5 - 17.8:1
4:3
= 7.6658 x SD
-
0.3862
= 14.3627 x SD
-
0.3598
r
Fixed-focus Lens
Projection lens Model No.
Throw ratio
Aspect ratio
Projection distance
(L1) formula
Formula for distance between projector and
screen (A1)
Min.
Max.
ET-D75LE90
0.39:1
16:10
= 0.325 x SD + 0.020
= 0.245 x SH
-
0.128
= 0.339 x SH
-
0.128
0.39:1
16:9
= 0.334 x SD + 0.020
= 0.272 x SH
-
0.128
= 0.432 x SH
-
0.128
0.47:1
4:3
= 0.368 x SD + 0.020
= 0.245 x SH
-
0.128
= 0.339 x SH
-
0.128
Projection lens Model No.
Throw ratio
Aspect ratio
Projection distance (L) formula
ET-D75LE50
0.7:1
16:10
= 0.6505 x SD
-
0.0713
0.7:1
16:9
= 0.6686 x SD
-
0.0713
0.9:1
4:3
= 0.7365 x SD
-
0.0713
Adjusting adjustable feet
Install the projector on a flat surface so that the front of the projector is parallel to the screen surface and the
projection screen is rectangular.
If the screen is tilted downward, the projection screen can be adjusted to be rectangular by adjusting the front
adjustable feet. The adjustable feet can also be used to adjust the projector to be level when it is tilted in the
horizontal direction.
Adjustable feet can be extended by turning them as shown in the figure. Turning them in the opposite direction will
return them to the original position.
Maximum adjustable range
Adjustable feet: 12 mm (15/32") each
Attention
f
Be careful not to block the intake/exhaust ports with your hands or any objects when adjusting the adjustable feet while the light source is
on. (
x
page 30)
