NEC Display Solutions of America, Inc.
P502WL/P502HL Installation Guide
Desktop and Ceiling Mount
Rev 1.0
Page 2 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 16:10 screens
16:10 Screen Formulas:
W = H x 16/10
H = W x 10/16
Screen Diagonal = W x 18.868/16
Projection Formulas:
B
= 0.369W
C
(wide) = 1.309W – 1.457
C
(tele)
= 2.248W – 1.404
D
(max) = -0.056W
D
(min) = 0.313W
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
57
48
30
18
61
-
107
-3
-
15
16.1
-
9.4
66
56
35
21
72
-
124
-3
-
18
16.0
-
9.4
68
58
36
21
74
-
128
-3
-
18
16.0
-
9.4
75
64
40
24
82
-
142
-4
-
20
16.0
-
9.4
79
67
42
25
87
-
150
-4
-
21
16.0
-
9.4
85
72
45
27
93
-
160
-4
-
23
16.0
-
9.4
92
78
49
29
101
-
175
-4
-
25
16.0
-
9.4
98
83
52
31
107
-
186
-5
-
26
15.9
-
9.4
102
86
54
32
112
-
193
-5
-
27
15.9
-
9.4
111
94
59
35
122
-
211
-5
-
30
15.9
-
9.4
113
96
60
35
124
-
214
-5
-
30
15.9
-
9.4
123
104
65
38
135
-
232
-6
-
33
15.9
-
9.4
125
106
66
39
137
-
236
-6
-
33
15.9
-
9.4
147
125
78
46
162
-
279
-7
-
39
15.9
-
9.4
149
126
79
47
164
-
283
-7
-
40
15.9
-
9.4
213
181
113
67
235
-
405
-10
-
57
15.8
-
9.4
255
216
135
80
281
-
484
-12
-
68
15.8
-
9.3
270
229
143
84
298
-
513
-13
-
72
16
-
9
300
254
159
94
332
-
570
-14
-
80
16
-
9
degrees
D
max - min
α
w ide - tele
Screen Size (16:10)
inches
B
C
w ide - tele
inches
Shift Range
Screen Center
H
0.1H
Shift Range
Screen Center
C
C
6.92
Lens Offset From Mount Pipe
7.48
