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Visual Systems Division
Technical Bulletin
MultiSync MT820/MT1020 Installation Data
Desk Top and Ceiling Mount
Projection Distance and Screen Size for Ceiling Mount
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
Screen Center
Zoom Lens (Wide)
degree
8.86
0.1539
(=sin
(=cos )
0.9881
Screen Width
inch
48
Diagonal (4:3)
inch
60
A
inch
94.4
mm
2398.6
B
inch
20.1
mm
511.4
C
inch
93.3
mm
2370
D
inch
0.0
mm
0.5
Note:
For screen sizes of 60 to 300 inches not indicated on the projection tables, use the formulas on page 1.
All calculations are with the lens (Wide setting).
C
A
8.81
8.77
8.75
0.1531
0.1525
0.1521
0.1518
0.9882
0.9883
0.9884
0.9884
56
64
72
70
80
90
110.8
127.1
143.4
2813.2
3227.8
3642.4
4053.0
22.6
25.0
27.4
573.0
634.5
696.0
109.4
125.6
141.7
2780
3190
3600
0.6
1.2
1.7
15.1
29.7
44.3
4.38"
Horizontal
Lens
Offset
8.73
8.70
8.67
0.1513
0.1508
0.1504
0.9885
0.9886
0.9886
80
96
120
100
120
150
159.6
192.1
241.1
4880.2
6123.0
7362.8
29.8
34.7
41.9
757.6
880.7
1065.3
1249.9
157.7
189.9
238.3
4006
4824
6053
2.3
3.5
5.2
59.0
88.2
132.0
6.93"
8.65
8.64
8.63
0.1503
0.1500
0.1499
0.9886
0.9887
0.9887
144
160
192
180
200
240
289.9
322.5
387.7
8191.0
9846.4
11086.2 12329.0
49.2
54.1
63.7
1373.0
1619.1
1803.7
286.6
318.8
383.3
7279
8098
9735
10961
6.9
8.1
10.4
175.9
205.1
263.6
8.62
8.61
0.1497
0.9887
216
240
270
300
436.5
485.4
71.0
78.3
1988.4
431.5
479.9
12190
12.1
13.8
307.4
351.3
Page2
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