NEC Lt81 Projector Users Manual

							39
INSTALLATION40
Transporting and storing the projector
[LT100]
MEMU
SELECT
ENTER
STATUS
POWER ON / OFFAC IN
2 1
Projector
Zipper
Note book PC
Other Accessories
2. Zip up the sides of the case.3. Hold the projector by itÕs handle and slide it into the large
compartment of the carrying case.
5. Unlatch the belt and then place your notebook computer into the
front pouch.
6. Latch the belt.7. Store the remote control and other accessories in the side
pouches on the carrying case.
2
1
When storing the remote
control, place the remote in
its protective case. The
case will keep the remote
buttons from being acci-
dentally pushed while it is
being stored or trans-
ported. This will keep the
batteries from being dis-
charged.
4. Zip up the top of the case.
* Carry the projector carefully. Bumping or dropping the projector
may cause damage. 1. Unfold carrying case. 
						

							     WARNING
¥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 41ûF (5ûC) and 95ûF (35ûC).
¥ 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 bottom or the side
of the projector.
Ceiling Installation
Installing your MultiSync LT81/LT100 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.
NOTE : Distances may vary ±5%.
41
If your projector is mounted on the ceiling and your image is upside
down, use the ÒMenuÓ and ÒSelectÓ buttons on your projector cabinet
or (s) (t)  buttons on your remote control to correct the orientation.
(See page 70.)
INSTALLATION42
233–303
200–261100–131
80–104
60–78
40–53
24–31
1.2m (3.94ft)
2.1m (6.89ft)
3.15m (10.33t)
4.2m (13.78ft)
5.3m (17.39ft)
10.65m (34.94ft)
12.3m (40.35ft)
15.7ft (4785.2mm)
2.27ft
(691.8mm)
Projection distance and screen size examples
¥ Horizontal projection position Lens centered left to right
¥ Vertical projection position
L
H
Screen size Projection distance L ft.(m)Dimension H inch (cm)Inches Wide (W) Tele (T) Both W & T
24 3.94ft (1.20m) 2.76Ó (7.0cm)40 5.25 ft (1.60m) 6.89ft (2.10m) 4.8Ó (12.2cm)60 7.87 ft (2.40m) 10.33ft (3.15m) 6.93Ó (17.6cm)
80 10.66ft (3.25m) 13.78ft (4.20m) 9.37Ó (23.8cm)100 13.3ft (4.05m) 17.39ft (5.30m) 11.46Ó (29.1cm)200 26.9ft (8.20m) 34.94ft (10.65m) 23.58Ó (59.9cm)
300 40.35ft (12.30m) 35.08Ó (89.1cm) 
						

							PC CONTROL
VIDEO INPUT
RGB INPUT OUTPUT
OUTPUT S-VIDEO VIDEO L(MONO)-R-AUDIOOUTPUTINPUT
RGB RGBAUDIO AUDIO
REMOTE
CONTROL
Document Camera
VCR, Laser Disk Player or DVD Player
Wiring Diagram
To video, S-video, and audio
inputs on the projector
43
IBM VGA or Compatibles Macintosh or Compatibles 
(Desk top type)
Remote Mouse
Receiver PS/2 mouse adapter
(supplied)
Mac ADB adapter
(supplied)
INSTALLATION44
Pin adapter for Macintosh
(supplied)
DVD Player with Y/Cb/Cr output
Signal cable (supplied)
To mini D-Sub 15-pin connector on the Projector
Remote Mouse
Receiver
Remote Control Guideline
1. Plug the serial cable with the remote mouse receiver into your computers mouse port and restart your computer to gain remote mouse
control.
2. When using the remote controls built-in infrared mouse on a laptop computer, the laptops mouse, trackball or trackpad will be disabled.
Disconnect the infrared receiver and restart your computer to regain trackball or trackpad mouse control.
3. If the screen goes blank while using your remote control, it may be the result of the computers screen-saver or power management
software. If you accidentally hit the OFF button on the remote control, wait one full minute and then press the ON button to resume.
To RGB input on the projector 
						

							Connecting Your PC Or Macintosh Computer
Connecting your PC or Macintosh computer to your MultiSync LT81 (SVGA)/ LT100 (XGA) Projector will enable you to project your
computers screen image for an impressive presentation. All of these following display standards are supported:
* indicates that this resolution is supported by LT100 only.
To connect to a PC, Macintosh or computer equipped with an XGA/SVGA/VGA adapter or compatible graphics adapter, simply:
1. Turn off the power to your projector and computer.
2.
If your PC does not support XGA/SVGA/VGA you will need to install an XGA/SVGA/VGA graphics board. Consult your computers owners
manual for your XGA/SVGA/VGA configuration. If you need to install a new board, see the manual that comes with your new graphics board for
installation instructions.
3. Use the signal cable thats supplied to connect your PC or Macintosh computer to the projector. For Macintosh, use the supplied pin adapter to
connect to your computers video port.
4. Turn on the projector and the computer.
5.
If the projector goes blank after a period of inactivity, it may be caused by a  screen saver installed on the computer youve connected to the projector.
45
INSTALLATION46 When using a Macintosh with the LT81/LT100, set the DIP switch of the supplied pin adapter according to your resolution. After setting, restart
your Macintosh.
See the following pages for setting of the DIP switch.
¥ When using with a Macintosh, SVGA (8002600)  / XGA (10242768) is recommended if your Macintosh supports this mode.
¥
When using with a Macintosh PowerBook, output may not be set to 8002600 unless ÒmirroringÓ is off on your PowerBook. Refer to ownerÕs manual
supplied with your Macintosh computer for mirroring.
NOTE: A Video Adapter cable manufactured by Apple Computer is needed for a PowerBook which does not have a mini D-Sub 15-pin connector.
Settings for Macintosh adapter
Macintosh models applied
Desktop type and PowerBook with 8002600
LCD panel
PowerBook with 6402480 LCD panel
Desktop type with AccuBlendSetting required to be selected resolution on Mac after
restarting.
Set to VGA/SVGA (8002600)
Set to 17Ó multi-scan mode (6402480)
Set to 17Ó multi-scan mode (10242768) Setting Mode (Fixed resolution)
16Ó fixed mode (output is 8322624)
13Ó fixed mode (output is 6402480)
19Ó fixed mode (output is 10242768)
VGA 6402480 for graphics VGA 6402400 for graphics
VGA 6402350 for graphics VGA 7202400 for text
VGA 7202350 for text SuperVGA 8002600
Macintosh at 6402480 Macintosh at 8322624
XGA10242768 (AccuBlend) Macintosh at 10242768 (AccuBlend)
SXGA128021024 (AccuBlend)* 
						

							Settings for Monitor Mode
Number of DIP switch
Monitor size
15Ó multi-scan mode /16ÓÐ13Ó
17Ó multi-scan mode /19ÓÐ13Ó
19Ó multi-scan mode /21ÓÐ13Ó
13Ó fixed mode /6402480
VGA/SVGA mode
16Ó fixed mode /8322624
19Ó fixed mode /10242768
47
INSTALLATION48
S1
ON
ON
ON
ONS2 S3 S4
ONS5
ON
ONS6
ONS7
ONS8
ON
NOTE: For setting other than display modes supported by your Macintosh and LT81/LT100, using of the
DIP switch may bounce a image slightly or may display nothing. If this happens, set the DIP switch to the
13Ó fixed mode and then restart your Macintosh. After that, restore to a displayable mode and then
restart the Macintosh again.
Make sure that LT81/LT100 and your Macintosh are connected with the pin adapter and the supplied
signal cable (mini D-Sub 15-pin connector) and then restart your Macintosh.
NOTE: Refer to your computers owners manual for more information about your computers video
output requirements and any special identification or configuring your projectors image and monitor
may require.
ONON®
12345678
ON®
12345678
19Ó fixed mode
17Ó multi-scan modeVGA/SVGA mode Examples of DIP switch setting
®
12345678 
						

							Changing Video Resolutions
Depending on your computers graphic capability, you may be able
to select one of several resolutions. Generally a computer- either a
PC or Macintosh- with 1 meg. of memory will run:
6402480 at 16.7 million colors (24 bit Truecolor)
8002600 at 65 thousand colors.
10242768 at 256 colors.
As the resolution increases,  the number of colors you can run de-
creases.  With 2 meg. of memory a computer will run:
6402480 at 16.7 million colors (24 bit Truecolor).
8002600 at 16.7 million colors (24 bit Truecolor).
10242768 at 65 thousand colors.
128021024 at 256 colors.
Windows 95
There are two methods you can use to change your resolution.
Method 1
1. Move your cursor to the background image and click.
2. In the Properties menu, select Settings.
3. Change your resolution and click OK.4. You may be asked to reboot for the changes to take effect, or you ll
get a message that Windows is about to resize your display. When
asked if you want to keep your settings, select Yes.
Method 2
1. Click on your My Computer icon.
2. Open Control Panel and select Display.
3. Change your resolution and click OK. after the new resolution is
selected.
4. You may be asked to reboot for the changes to take effect, or you ll
get a message that Windows is about to resize your display. When
asked if you want to keep your settings, select Yes.
Windows 3.1
1. Click on the Main icon and open Control Panel.
2. Select Change System Settings and click on Option.
3. Choose Change Display Settings.
4. Select the resolution you want.
5. Choose the current drive or another.
6. Restart Windows for the changes to take effect.49
Macintosh
1. Under the Apple menu, select Control Panels and open Moni-
tors.
2. Click and open Options.
3. Select your new resolution and click OK.
If you have an NEC monitor connected to your Macintosh, you may
have a DPI-On-The-Fly extension that enables you to change your
resolution directly. The DPI-On-The-Fly icon is under your Apple
menu.
INSTALLATION50 
						

							Connecting Your DVD Player
You can connect your MultiSync LT81/LT100 Projector to a DVD player with the 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 the optional 15-pin-to-RCA23 cable to connect your DVD player to the
RGB INPUT connector on the LT81/LT100.
For a DVD player without component video (Y,Cb,Cr) outputs, use common RCA cables (not provided) to connect a composite VIDEO
output of the DVD player to the Video Input of the LT81/LT100.
3. Turn on the projector and the DVD player.
NOTE: Refer to your DVD players owners manual for more information about your DVD players video output requirements.
Connecting Your Document Camera
You can connect your MultiSync LT81/LT100 Projector to a document camera. To do so, simply:
1. Turn off the power to your projector and document camera.
2. Use a standard video cable to connect your document camera to the Video input on your projector.
3. Turn on the projector and the document camera.
NOTE:   Refer to your document cameras owners manual for more information about your cameras video output requirements .
51
INSTALLATION52
Connecting Your VCR Or Laser Disc Player
Use common RCA cables (not provided) to connect your VCR or laser disc player to your MultiSync LT81/LT100 Projector. To make these
connections, simply:
1. Turn off the power to your projector and VCR or laser disc player.
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 standard RCA audio patch cords to connect the audio from your VCR, or laser disc player to your projector
(if your VCR, or laser disc player has this capability). Be careful to keep your right and left channel connections correct for stereo sound.
3. Turn on the projector and the VCR, or laser disc player.
NOTE:  Refer to your VCR, or laser disc player owners manual for more information about your equipments video output requirements.
Connecting An External Monitor
You can connect a separate, external monitor to your projector to simultaneously view on a monitor the image youre projecting. To do so:
1. Turn off the power to your projector and computer, document camera or video source.
2. Use a 15-pin cable to connect your monitor to the RGB OUTPUT connector on your LT81/LT100 projector.
3. Turn on the projector and the computer, document camera or video source. 
						

							Connecting Your Remote Mouse Receiver
The remote mouse receiver enables you to operate your computers mouse functions from the NEC MultiSync LT81/
LT100 remote control. It is a great convenience for clicking through your computer-generated presentations.
To connect the remote mouse receiver:
1. Turn off your computer.
2. For PCs: Remove your current mouse and connect the serial cable from the remote mouse receiver to your PCs
mouse port. (Use the 6-pin adapter for connecting to a PS/2 computer.)
For Macintosh: Remove your current mouse from your computer, attach the Macintosh adapter to the remote
mouse receivers serial cable, and connect the receiver to your mouse port.
3. When the remote mouse receiver is installed, it will disable your regular mouse, disconnect the remote mouse
receiver and restart your computer.
IBM PC/AT
IBM PS/2 Macintosh
INSTALLATION53
54
Input for wired remote control (LT100 only)
Input for wired remote control (LT100 only) 
						

							mThe Remote Mouse Receiver as a mouse for your computer
INSTALLATION55
56
Serial cable (supplied)
Serial cable
(supplied) Remote cable
(supplied with LT100 only)Remote Control
Output
mThe Remote sensors on the projector cabinet work as the remote sensor
on the Remote Mouse Receiver (LT100 only)
mYou can daisy-chain as many as five projectors and operate them with the same remote control. (LT100 only)
To do so:
1. Turn off your computer.
2. Use the remote control cables supplied to connect the Remote Control Output of one
projector to the Remote Control Input of the next until all the projectors are connected.
RGB INPUTS-VIDEOOUTPUTINPUT
RGB
REMOTE
CONTROL
Insert the supplied remote cable here.
Remote cable
(supplied with LT100 only) 
						

							This section describes how to select a computer or video source and how to adjust the
picture and sound.
General Controls Before you turn on your MultiSync LT81/LT100 Projector,  ensure
that the computer or video source is turned on and that your lens cap is removed.
1.Turn On The Projector The main power switch is on the back panel of the
MultiSync LT81/LT100 Projector. By turning this switch on, the projector will go
into its standby mode and the power light will glow amber. Only after you press the
On button on the remote control or projector cabinet will the power light turn to
green and the projector become ready to use.
NOTE: To turn the projector on and off with just the back panel switch, use the menu
and enable the auto start feature. (See page 67. )
2.Select The Computer Or Video Source Press the Video (VCR, DVD player,
document camera, or laser disc player), S-video, RGB (computer), or PC
Card button on the remote control to display the image. Or press the Menu
button on the cabinet and use the icons to select your video source: Video, S-
Video, RGB or PC Card.
OPERATION 357
3.Adjust The Image Size Adjust the size of the screen with the zoom ring lever on the
projector.
4.Focus Adjust the focus with the focus ring on the projector.
5.Turning Off The Projector First press the off button on the remote control or press
and hold down the on/off button on the cabinet for one second. The power light will
glow amber. Then turn off the main power switch on the back panel. The power light
will go out.
IMPORTANT:
¥ The projector should be unplugged if it will not to be used for an extended period.
¥ To turn off the image and sound briefly (five minutes or less), use the Picture Mute
button on the remote control instead of turning the projector off and on.
¥ The projector will display a black, blue image or focus pattern if no input signal is
present.
¥ Do not turn the projector off and then immediately back on. The projector needs to
cool for a minute before it can be restarted.
OPERATION 58