NEC Lt240 Portable Projector Users Manual

E-21
INSTALLATION AND CONNECTIONS
This section describes how to set up your projector and how to connect
video and audio sources.
3
1
2
Your projector is simple to set up and use. But before you get started, you
must first:
zSet up a screen and the projector.
xConnect your computer or video equipment to the projector. See page E-
28.
cConnect the supplied power cable. See page E-36.
NOTE: Ensure that the power cable and any other cables are disconnected
before moving the projector.
When moving the...

E-22
INSTALLATION AND CONNECTIONS 
 Setting Up the Screen and theProjector
406.4(W) X 304.8(H)
365.8(W) X 274.3(H)
304.8(W) X 228.6(H)
243.8(W) X 182.9(H)
203.2(W) X 152.4(H)
162.6(W) X 121.9(H)
121.9(W) X 91.4(H)
81.3(W) X 61.0(H)
61.0(W) X 45.7(H)
Screen size (Unit: cm/inch)
Lens center
Screen size
Distance (Unit: m/feet)
1.7/5.6
(1.3/4.3)2.6/8.5
(2.0/6.6)
3.5/11.5
(2.7/8.9)
4.4/14.4
(3.4/11.2)
5.3/17.4
(4.1/13.5)
6.6/21.7
(5.2/17.1)
7.9/25.9
(6.2/20.34)
8.8/28.9
(6.9/22.6)1.3/4.3
(1.0/3.3)
200
180...

E-23
INSTALLATION AND CONNECTIONS 
 Setting Up the Screen and theProjector
Distance Chart
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and bottom of screen
α = Throw angle
Lens Center
Throw Angle (
)
Throw Distance (C) Screen center Screen Diagonal Screen Width
Screen Height
Screen Bottom
(B)
(D)
Throw Distance and Screen Size
The following shows the proper relative positions of the projector and screen.
Refer to the table to...

E-24
INSTALLATION AND CONNECTIONS 
 Setting Up the Screen and theProjector

B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and bottom of screen
α = Throw angle
NOTE: Distances may vary +/-5%.
α
Wide – Tele
inch
24
32
48
54
58
64
67
72
80
96
120
144
160
168
192
209
216
240
280
320
360
400inch
18
24
36
40
43
48
50
54
60
72
90
108
120
126
144
157
162
180
210
240
270
300 Screen Size B C
Wide – TeleD
inch
30
40
60
67
72
80
84
90
100...

E-25
INSTALLATION AND CONNECTIONS 
 Setting Up the Screen and theProjector

B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and bottom of screen
α = Throw angle
NOTE: Distances may vary +/-5%.
α
Wide – Tele
inch
24
32
48
54
58
64
67
72
80
96
120
144
160
168
192
209
216
240
280
320
360
400inch
18
24
36
40
43
48
50
54
60
72
90
108
120
126
144
157
162
180
210
240
270
300 Screen Size B C
Wide – TeleD
inch
30
40
60
67
72
80
84
90
100...

E-26
INSTALLATION AND CONNECTIONS 
 Setting Up the Screen and theProjector

B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and bottom of screen
α = Throw angle
NOTE: Distances may vary +/-5%.
α
Wide – Tele
inch
24
32
48
54
58
64
67
72
80
96
120
144
160
168
192
209
216
240
280
320
360
400inch
18
24
36
40
43
48
50
54
60
72
90
108
120
126
144
157
162
180
210
240
270
300 Screen Size B C
Wide – TeleD
inch
30
40
60
67
72
80
84
90
100...

E-27
WARNING
*Installing your projector on the ceiling must be done by a qualified tech-
nician. 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 41˚F (5˚C) and 95˚F (35˚C).
•Do not expose the projector to...

E-28
Making Connections
INSTALLATION AND CONNECTIONS
VCR, DVD Player or
LaserDisc Player
Macintosh(Desktop type or notebook type)IBM VGA or Compatibles(Desktop type or notebook type)
DVD Player(with component output)
Document Camera
To video, S-video, and au-
dio inputs on the projector.
Optional 15-pin-to-RCA
(female)
3 cable
(ADP-CV1) RGB Signal cable (supplied)To mini D-Sub 15-pin connector on the pro-
jector. It is recommended that you use a com-
mercially available distribution amplifier if con-...

E-29
INSTALLATION AND CONNECTIONS 
 Making Connections
To connect SCART output (RGB)
Before connections: An exclusive SCART adapter (ADP-SC1) and a com-
mercially available SCART cable are required for this connection.
NOTE:
•Audio signal is not available for this connection.
•The RGB IN 2 connector does not support SCART signal and Plug & Play.
S
E
L
E
C
TCNACELTERNEEMNUSOURCE
AUTO ADJUST
ON STAND 
BYSTATUS
POWER LAMPALIGNMENTPC-CARD
Video equipment
such as DVD player
Projector
ADP-SC1Commercially...

E-30
INSTALLATION AND CONNECTIONS 
 Making Connections
Connecting Your PC or Macintosh Computer
PHONE
RGB IN1
RGB IN2AUDIO IN
PHONE
Audio cable (not supplied)
IBM VGA or Compatibles (Note-
book type) or Macintosh (Note-
book type) IBM VGA or Compatibles (Desktop type)
or Macintosh (Desktop type) RGB signal cable (supplied)To mini D-Sub 15-pin connector on the
projector. It is recommended that you use
a commercially available distribution am-
plifier if connecting a signal cable longer
than the supplied...