NEC NP-M311X Installation Guide - Page 2

Ceiling Mounted and Desktop, Diagrams and Distance Charts, Ceiling Mounted, Desktop, Distance Chart - projector ceiling mount

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M271X/M311X Installation Guide Ceiling Mounted and Desktop NEC Display Solutions of America, Inc. Rev 1.0 Diagrams and Distance Charts The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of installation. Distances are in inches. For millimeters multiply by 25.4. Ceiling Mounted 4.56" 5.17" C Throw Distance Screen Top D Lens Ctr B Lens Offset From Mount Pipe Screen Ctr 2.79 Desktop C Throw Distance 2.22" Screen Ctr B Lens Ctr D Screen Bottom Distance Chart for popular 4:3 screens Note: For screen sizes not indicated on the projection tables, use the formulas on page 1. Screen Size (16:10) Diagonal Width(W) Height (H) inches inches inches 30 24 18 60 48 36 67 54 40.2 72 58 43.2 84 67 50.4 90 72 54 100 80 60 120 96 72 150 120 90 180 144 108 210 168 126 240 192 144 270 216 162 300 240 180 B inches 6 12 14 15 17 19 21 25 31 37 43 49 56 62 C w ide - tele inches 31 - 53 64 - 107 71 - 120 77 - 129 90 - 151 97 - 162 108 - 180 129 - 216 162 - 270 195 - 325 228 - 379 261 - 434 293 - 488 326 - 543 www.necdisplay.com M271X, M311X D inches -3 -6 -6 -7 -8 -8 -9 -11 -14 -17 -20 -22 -25 -28 α w ide - tele degrees 11.3 - 6.7 11.0 - 6.6 10.9 - 6.6 10.9 - 6.6 10.9 - 6.6 10.9 - 6.6 10.9 - 6.5 10.8 - 6.5 10.8 - 6.5 10.8 - 6.5 10.8 - 6.5 10.8 - 6.5 10.8 - 6.5 10.7 - 6.5 Page 2 of 6

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NEC Display Solutions of America, Inc.
M271X/M311X Installation Guide
Ceiling Mounted and Desktop
Rev 1.0
www.necdisplay.com
M271X, M311X
Page 2 of 6
Diagrams and Distance Charts
The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of
installation.
Distances are in inches. For millimeters multiply by 25.4.
Ceiling Mounted
Desktop
Distance Chart for popular 4:3 screens
Note:
For screen sizes not indicated on the projection
tables, use the formulas on page 1.
Lens Offset From
Mount Pipe
B
C
Lens Ctr
Screen Ctr
Throw Distance
Screen Bottom
2.22"
C
Throw Distance
Screen Top
4.56"
5.17"
D
B
Lens Ctr
Screen Ctr
D
2.79
Diagonal
Width(W)
Height (H)
inches
inches
inches
inches
30
24
18
6
31
-
53
11.3
-
6.7
60
48
36
12
64
-
107
11.0
-
6.6
67
54
40.2
14
71
-
120
10.9
-
6.6
72
58
43.2
15
77
-
129
10.9
-
6.6
84
67
50.4
17
90
-
151
10.9
-
6.6
90
72
54
19
97
-
162
10.9
-
6.6
100
80
60
21
108
-
180
10.9
-
6.5
120
96
72
25
129
-
216
10.8
-
6.5
150
120
90
31
162
-
270
10.8
-
6.5
180
144
108
37
195
-
325
10.8
-
6.5
210
168
126
43
228
-
379
10.8
-
6.5
240
192
144
49
261
-
434
10.8
-
6.5
270
216
162
56
293
-
488
10.8
-
6.5
300
240
180
62
326
-
543
10.7
-
6.5
Screen Size (16:10)
-3
inches
B
C
w ide - tele
inches
-28
degrees
D
α
w ide - tele
-6
-6
-7
-8
-8
-9
-11
-14
-17
-20
-22
-25