Ceiling Installation; Reflecting The Image - NEC VT650 User Manual

Ceiling Installation

Screen Top
D
Lens Center
B
Screen Center
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and top of screen
= Throw angle
Lens Offset 5.5mm
Screen Size
Diagonal Width
inch mm inch mm
25 635 20 508
30 762 24 610
40 1016 32 813
60 1524 48 1219
67 1702 54 1361
72 1829 58 1463
80 2032 64 1626
84 2134 67 1707
90 2286 72 1829
100 2540 80 2032
120 3048 96 2438
150 3810 120 3048
180 4572 144 3658
200 5080 160 4064
210 5334 168 4267
240 6096 192 4877
250 6350 200 5080
270 6858 216 5486
300 7620 240 6096
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and top of screen
= Throw angle
WARNING
• Installing your projector on the ceiling must be done by a
qualified technician. Contact your NEC dealer for more
information.
* Do not attempt to install the projector yourself.
• Only use your projector on a solid, level surface. If the
projector falls to the ground, you can be injured and the
projector severely damaged.
• Do not use the projector where temperatures vary greatly.
The projector must be used at temperatures between 32˚F
(0˚C) and 95˚F (35˚C).
• Do not expose the projector to moisture, dust, or smoke.
This will harm the screen image.
• Ensure that you have adequate ventilation around your
projector so heat can dissipate. Do not cover the vents on
the side or the front of the projector.
2.3" (58.4mm)
B
Height
inch mm inch mm
15 381 6 153
18 457 7 183
24 610 10 244
36 914 14 367
40 1021 16 409
43 1097 17 440
48 1219 19 489
50 1280 20 513
54 1372 22 550
60 1524 24 611
72 1829 29 733
90 2286 36 917
108 2743 43 1100
120 3048 48 1222
126 3200 51 1283
144 3658 58 1467
150 3810 60 1528
162 4115 65 1650
180 4572 72 1833
Projector feet
Throw Distance
C
C
wide tele
inch mm - inch
- - - 42
42 1077 - 51
57 1450 - 69
87 2197 - 104
97 2459 - 117
104 2645 - 125
116 2944 - 139
122 3094 - 146
131 3318 - 157
145 3691 - 175
175 4438 - 210
219 5559 - 263
263 6679 - 316
292 7426 - 351
307 7800 - 369
351 8920 - 422
366 9294 - 439
395 10041 - -
439 11161 - -
If your projector is mounted on the ceiling and your image is
upside down, use the "Menu" and "Select" buttons on your pro-
jector cabinet or your remote control to correct the orientation.
(See page E-35.)

Reflecting the Image

Using a mirror to reflect your projector's image enables you to
enjoy a much larger image. Contact your NEC dealer if you need
a mirror. If you're using a mirror and your image is inverted, use
the "Menu" and "Select" buttons on your projector cabinet or
your remote control to correct the orientation. (See page E-35.)
E–18
VIDEO S-VIDEO PC-CONTROL
IN OUT OUTPUT
OUT IN
INPUT
AUDIO RGB
D
wide
mm inch mm degree
1077 1 38 -
1301 2 45 9.7
1749 2 60 9.6
2645 4 91 9.5
2959 4 101 9.5
3183 4 109 9.4
3542 5 121 9.4
3721 5 127 9.4
3990 5 136 9.4
4438 6 151 9.4
5335 7 181 9.4
6679 9 226 9.4
8024 11 272 9.4
8920 12 302 9.3
9368 12 317 9.3
10713 14 362 9.3
11161 15 377 9.3
- 16 407 9.3
- 18 453 9.3
tele
- degree
- 8.1
- 8.0
- 8.0
- 7.9
- 7.9
- 7.9
- 7.9
- 7.9
- 7.8
- 7.8
- 7.8
- 7.8
- 7.8
- 7.8
- 7.8
- 7.8
- 7.8
- -
- -