NEC Display Solutions of America, Inc.
P452W/P452H/P502W/P502H Installation Guide
Desktop and Ceiling Mount
Rev 1.0
www.necdisplay.com
P452W/P452H/P502W/P502H
Page 3 of 9
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 16:9 screens
16:9 Screen Formulas:
W = H x 16/9
H = W x 9/16
Screen Diagonal = W x 18.358/16
Projection Formulas:
B
(max) = 0.347W
B (min) = 0
C
(wide) = 1.282W – 1.426
C
(tele)
= 2.202W – 1.375
D
(max) = -0.065W
D
(min) = 0.281W
α
(wide) = tanˉ¹ (B/C(wide))
α
(tele) = tanˉ¹ (B/C(tele))
Note:
For screen sizes not indicated on the projection
tables, use the formulas on page 1.
Diagonal Width(W) Height (H)
inches
inches
inches
61
53
30
18
-
0
67
-
116
3
-
15
15.4
-
9.1
71
62
35
22
-
0
78
-
136
4
-
17
15.4
-
9.0
73
64
36
22
-
0
81
-
140
4
-
18
15.4
-
9.0
82
71
40
25
-
0
90
-
155
5
-
20
15.4
-
9.0
86
75
42
26
-
0
94
-
163
5
-
21
15.4
-
9.0
92
80
45
28
-
0
101
-
175
5
-
22
15.3
-
9.0
100
87
49
30
-
0
110
-
190
6
-
24
15.3
-
9.0
106
92
52
32
-
0
117
-
202
6
-
26
15.3
-
9.0
110
96
54
33
-
0
122
-
210
6
-
27
15.3
-
9.0
120
105
59
36
-
0
133
-
230
7
-
29
15.3
-
9.0
122
107
60
37
-
0
135
-
234
7
-
30
15.3
-
9.0
133
116
65
40
-
0
147
-
253
8
-
32
15.3
-
9.0
135
117
66
41
-
0
149
-
257
8
-
33
15.3
-
9.0
159
139
78
48
-
0
176
-
304
9
-
39
15.3
-
9.0
161
140
79
49
-
0
179
-
308
9
-
39
15.3
-
9.0
230
201
113
70
-
0
256
-
441
13
-
56
15.2
-
9.0
275
240
135
83
-
0
306
-
527
16
-
67
15.2
-
9.0
Screen Size (16:9)
inches
C
w ide - tele
inches
B
max - min
inches
degrees
D
max - min
α
w ide - tele
Shift Range
Screen Center
H
0.1H
Shift Range
Screen Center
C
Lens Offset From Mount Pipe
8.2
6.25
C
5.95
