NEC Vt650 Projector User Manual

E–15
Switching Operation Mode between Computer and Projector
The SELECT, ENTER, and CANCEL buttons shown on the drawing work as a computer mouse in the Computer mode.
In the Computer mode the PJ button is not lit.
•When any one of the POWER ON, OFF, MENU, HELP, or MAGNIFY button is pressed, the PJ button lights red to indicate that
you are in the Projector mode, which allows the projector menu operation using the SELECT, ENTER or CANCEL buttons.
•If no buttons are pressed within 10 seconds, the PJ...

E–16
This section describes how to set up your VT650 projector and
how to connect video and audio sources.
Setting up Your Projector
Your VT650 Projector is simple to set up and use. But before
you get started, you must first:
1. Determine the image size.
2. Set up a screen or select a non-glossy white wall onto which
you can project your image.
Carrying the Projector: Always carry your projector by
the handle. Ensure that the power cable and any other cables
connecting to video sources are disconnected...

E–17
Screen (inch)
Distance Chart
NOTE: Distances may vary +/–5%.
Lens Offset 5.5mm
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and bottom of screen for desktop
α = Throw angle
Screen Size (Diagonal)
inch mm inch mm inch mm inch mm inch mm - inch mm inch mm degree - degree25 635 20 508 15 381 6 153 - - - 42 1077 1 38 - - 8.130 762 24 610 18 457 7 183 42 1077 - 51 1301 2 45 9.7 - 8.040 1016 32 813 24 610 10 244 57 1450 - 69 1749...

E–18
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...

E–19
Wiring Diagram
NOTE: When using with a notebook PC, be sure to connect be-
tween the projector and the notebook PC before turning on the
power to the notebook PC. In most cases signal cannot be output
from RGB output unless the notebook PC is turned on after con-
necting with the projector.
NOTE:
* If the screen goes blank while using your remote control, it
may be the result of the computer’s screen-saver or power
management software.
* If you accidentally hit the POWER OFF button on the remote...

E–20
RGB
INPUT
OUTPUTAUDIO
IN
IN OUTOUT
PC-CONTROL S-VIDEOVIDEORGB INPUT
AUDIO
Connecting Your PC
IBM VGA or Compatibles
(Notebook type)Signal cable (supplied)
To mini D-Sub 15-pin connector on the projector. It is
recommended that you use a commercially available dis-
tribution amplifier if connecting a signal cable longer than
the supplied one.
IBM VGA or Compatibles
(Desktop type)
Audio cable
(not supplied)
Connecting your PC to your VT650 projector will enable you to project your computer’s screen...

E–21
RGB
INPUT
OUTPUTAUDIO
IN
IN OUTOUT
PC-CONTROLS-VIDEOVIDEORGB INPUT
AUDIO
1ON
DIP
2
34
56
To connect to a Macintosh, simply:
1. Turn off the power to your projector and your Macintosh
computer.
2. Use the supplied signal cable to connect your Macintosh
computer to the projector.
3. Turn on the projector and the Macintosh computer.
Connecting Your Macintosh Computer
Macintosh (Desktop type)
Audio cable
(not supplied)
For older Macintosh,
use a commercially
available pin
adapter to connect to
your Macs...

E–22
You can connect a separate, external monitor to your VT650 to simultaneously view on a monitor the image youre projecting. To do so:
1. Turn off the power to your projector, monitor and computer.
2. Use a 15-pin cable to connect your monitor to the RGB Monitor Output (Mini D-Sub 15 pin) connector on your projector.
3. Turn on the projector, monitor and the computer.
NOTE: When the projector is turned off, RGB signal will not be sent to the external monitor.
Connecting an External Monitor
R
G
B
IN
P...

E–23
RGB
INPUT
OUTPUTAUDIO
IN
IN
OUTOUT
PC-CONTROLS-VIDEOVIDEORGB INPUT
RL
RL
YCb
Cr
You can connect your projector to a DVD player with component outputs or Video output. To do so, simply:
1. Turn off the power to your projector and DVD player.
2. If your DVD player has the component video (Y,Cb,Cr) output, use a commercially available component video cable (RCA
3)
and the optional 15-pin-to-RCA (female) 
3 cable to connect your DVD player to the RGB INPUT connector on the projector.
For a DVD player...

E–24
R
L
RGB
INPUT
OUTPUTAUDIO
IN
IN OUTOUT
PC-CONTROLS-VIDEOVIDEO
S-VIDEO
VIDEO
VIDEO
R
L
Use common RCA cables (not provided) to connect your VCR, laser disc player or document camera to your projector.
To make these connections, simply:
1. Turn off the power to the projector and VCR, laser disc player or document camera.
2. Connect one end of your RCA cable to the video output connector on the back of your VCR or laser disc player, connect the other
end to the Video input on your projector. Use an...