BenQ SP831 User Manual
Page 21
Positioning your projector
21
When the screen aspect ratio is 4:3 and the projected picture is 16:9 or 15:9
Table B1: The screen aspect ratio is 4:3 and the projected picture is 16:9
D
A
D
B
C
Maximum zoom
Minimum zoom
Projection distance
Center of lens
Screen
Offset
Floor Installation
D
A
D
B
C
Maximum zoom
Minimum zoom
Projection distance
Center of lens
Screen
Offset
Ceiling Installation
Screen Dimensions
Projected
picture size
Black
bar (D)
Distance from Screen in
mm
Vertical
Offset
Diagonal
Height
C
Width
B
Height
A
Width
B
Min
(Max
zoom)
Average
Max
(Min
zoom)
Feet Inches mm
cm
cm
cm
cm
cm
mm
2.5
30
762
46
61
34
61
5.7
956.9
1033.4
1110.0
48
4.2
50
1270
76
102
57
102
9.5
1594.8
1722.4
1850.0
80
6.7
80
2032
122
163
91
163
15.2
2551.7
2755.8
2959.9
128
8.3
100
2540
152
203
114
203
19.1
3189.6
3444.7
3699.9
160
10.0
120
3048
183
244
137
244
22.9
3827.5
4133.7
4439.9
192
12.5
150
3810
229
305
171
305
28.6
4784.4
5167.1
5549.9
240
15.0
180
4572
274
366
206
366
34.3
5741.2
6200.5
6659.8
288
16.7
200
5080
305
406
229
406
38.1
6379.2
6889.5
7399.8
320
18.3
220
5588
335
447
251
447
41.9
7017.1
7578.4
8139.8
352
20.0
240
6096
366
488
274
488
45.7
7655.0
8267.4
8879.8
384