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Ceiling Mount Projection Distance and Screen Size for XG75A
• Install in such a way that the projector and screen are positioned in the proper direction and at the proper angle. If not, the projector's
performance will be affected and its reliability will decrease. Be sure to position the projector properly.
The manufacturer will not be held responsible for any problems occurring when the projector is not installed in the proper position.
The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of
installation
Ceiling Mount System
B
Screen center
α
12.1°
β (=sinα)
0.210
γ (=cosα)
0.978
Screen size H-Width
48"
(4:3 Diagonal)
(60")
inch
70.28
A
mm
1785
inch
26.00
B
mm
661
inch
68.72
C
1746
mm
inch
–
E
mm
–
NOTE:
• For screens 150 inches (3810mm) or larger (in the diagonal direction), set so that the distance between the surface of
installation of the mounting A and the ceiling is E.
• Set the projection distance based on the width of the screen.
• If the figures on the table do not match the figures in the formulae, use the figures on the table.
• For screen sizes of 60 to 300 inches not indicated on the table, use the following proportional formulae:
Units=inches W"=Screen H-Width
A = (25/96 W" 12.5) 4.99 70.28
B = (β A) 11.26
C = γ A
E = (1/2 Screen Height) B
• The margin of error for projection distance (A) is 3%.
C
α
α
A
12.4°
0.215
0.977
56"
64"
72"
(70")
(80")
(90")
81.54
91.6
101.74
2071
2318
2584
28.36
30.86
33.11
721
784
841
79.73
89.13
99.36
2025
2264
2524
–
–
–
–
–
–
11.15"
(283mm)
α
Line of sight
12.6°
0.218
80"
96"
120"
(100")
(120")
(150")
112.68
133.43
164.69
2862
3389
4183
35.46
39.91
47.19
901
1014
1199
110.05
130.32
160.72
2796
3310
4083
–
–
–
–
–
–
Units=mm W"=Screen H-Width
A = (25/96 W" 12.5) 126.64 1785
B = (β A) 286
C = γ A
E = (1/2 Screen Height) B
5
INSTALLATION SET-UP INSTRUCTION
5.12"
(130mm)
E
B
Screen center
12.7°
0.220
0.976
144"
160"
192"
(180")
(200")
(240")
196.11
214.02
258.51
4981
5436
6566
68.10
54.38
58.31
1381
1481
1730
191.31
208.78
252.18
4860
5303
6406
–
1.69
3.91
–
43
100
Ceiling Mounting
Ceiling Mounting
When using a screen 150"
(3810mm) or larger (in the
diagonal direction)
216"
240"
(270")
(300")
315.67
290.48
7378
8018
75.12
80.66
1908
2049
283.37
307.95
7198
7822
5.88
9.35
150
238
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