NEC MultiSync LT140 Installation Data page 3

Visual Systems Division
Technical Bulletin
MultiSync LT140 Installation Data
Desktop 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
Distance Chart
Screen Size
Diagonal Width (H)
40" 32"
60" 48"
67" 53.6"
72" 57.6"
84" 67.2"
90" 72"
100" 80"
120" 96"
150" 120"
180" 144"
210" 168"
240" 192"
270" 216"
300" 240"
Note:
For screen sizes of 25 to 300 inches not indicated on the projection tables, use the formulas on page 1.
Projector Base
C
A
Height (E) wide - tele
24" 64.4" - 77.0"
36" 97.7" - 116.5"
40.2" 109.3" - 130.2"
43.2" 117.7" - 140.2"
50.4" 137.6" - 163.7"
54" 147.5" - 175.6"
60" 164.1" - 195.4"
72" 197.3" - 234.9"
90" 247.4" - 294.1"
108" 297.0" - 353.3"
126" 346.9" - 412.5"
144" 396.7" - 471.6"
162" 446.5" - 530.9"
180" 496.3" - No Tele
Screen Top
A
Screen Center
B
wide - tele
4.7" 62.2" - 75.2"
7.0" 94.5" - 113.8"
7.8" 105.7" - 127.2"
8.4" 113.8" - 136.9"
9.8" 133.1" - 160.0"
10.5" 142.7" - 171.6"
11.7" 158.7" - 190.9"
14.0" 190.9" - 229.5"
17.5" 239.4" - 287.4"
21.0" 287.4" - 345.3"
24.5" 335.7" - 403.2"
28.0" 383.9" - 461.0"
31.5" 432.1" - 518.9"
35.0" 480.3" - No Tele
1.99"
B
D
E
Screen
C
wide - tele
15.0° - 12.5°
14.8° - 12.4°
14.8° - 12.4°
14.8° - 12.4°
14.7° - 12.3°
14.7° - 12.3°
14.7° - 12.3°
14.7° - 12.3°
14.6° - 12.3°
14.6° - 12.2°
14.6° - 12.2°
14.6° - 12.2°
14.6° - 12.2°
14.6° - No Tele
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