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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 (Telephoto)
degree
6.78
0.1181
(=sin
(=cos )
0.9930
Screen Width
inch
48
Diagonal (4:3)
inch
60
A
inch
123.1
mm
3126.9
B
inch
20.1
mm
511.4
C
inch
122.2
mm
3105
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 (Telephoto setting)
C
A
6.75
6.73
6.72
0.1176
0.1172
0.1170
0.1168
0.9931
0.9931
0.9931
0.9932
56
64
72
70
80
90
144.2
165.3
186.3
3663.4
4199.0
4732.5
5269.1
22.6
25.0
27.4
573.0
634.5
696.0
143.2
164.2
185.0
3638
4170
4700
0.6
1.2
1.7
15.1
29.7
44.3
4.38"
Horizontal
Lens
Offset
6.71
6.69
6.67
0.1165
0.1162
0.1160
0.9932
0.9932
0.9933
80
96
120
100
120
150
207.4
249.6
312.8
6339.2
7945.8
9552.4
29.8
34.7
41.9
757.6
880.7
1065.3
1249.9
206.0
247.9
310.7
5233
6296
7892
2.3
3.5
5.2
59.0
88.2
132.0
6.93"
6.66
6.65
6.64
0.1159
0.1157
0.1156
0.9933
0.9933
0.9933
144
160
192
180
200
240
376.1
418.2
502.5
10622.5 12764.7 14371.4 15979.0
49.2
54.1
63.7
1373.0
1619.1
1803.7
373.5
415.4
499.2
9488
10551
12679
14275
6.9
8.1
10.4
175.9
205.1
263.6
6.64
6.63
0.1155
0.9933
216
240
270
300
565.8
629.1
71.0
78.3
1988.4
562.0
624.9
15872
12.1
13.8
307.4
351.3
Page3
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