NEC Display Solutions of America, Inc.
P502WL/P502HL Installation Guide
Desktop and Ceiling Mount
Rev 1.0
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
= 0.369W
C
(wide) = 1.247W – 1.426
C
(tele)
= 2.142W – 1.374
D
(max) = -0.068W
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
inches
61
53
30
20
63
-
110
4
-
15
17.5
-
10.2
71
62
35
23
74
-
129
4
-
17
17.4
-
10.1
73
64
36
24
76
-
133
4
-
18
17.4
-
10.1
82
71
40
26
85
-
148
5
-
20
17.3
-
10.1
86
75
42
28
89
-
156
5
-
21
17.3
-
10.1
92
80
45
30
96
-
167
5
-
22
17.2
-
10.1
100
87
49
32
104
-
182
6
-
24
17.2
-
10.1
106
92
52
34
111
-
194
6
-
26
17.2
-
10.0
110
96
54
36
115
-
201
7
-
27
17.2
-
10.0
120
105
59
39
126
-
220
7
-
29
17.1
-
10.0
122
107
60
40
128
-
224
7
-
30
17.1
-
10.0
133
116
65
43
139
-
243
8
-
32
17.1
-
10.0
135
117
66
44
142
-
247
8
-
33
17.1
-
10.0
159
139
78
51
168
-
292
9
-
39
17.0
-
10.0
161
140
79
52
170
-
296
10
-
39
17.0
-
10.0
230
201
113
75
244
-
425
14
-
56
17.0
-
9.9
275
240
135
89
293
-
508
16
-
67
16.9
-
9.9
Screen Size (16:9)
inches
B
C
w ide - tele
inches
degrees
D
max - min
α
w ide - tele
Shift Range
Screen Center
H
0.1H
Shift Range
Screen Center
C
C
6.92
Lens Offset From Mount Pipe
7.48
