NEC Lt280 Portable Projector Users Manual

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4. Convenient Features
	 Making Freehand Drawings on a Projected Image
(ChalkBoard)
The ChalkBoard feature allows you to write and draw messages on a projected image.
NOTE: The ChalkBoard feature is available only when a USB mouse is used.
To display the ChalkBoard tool bar, click the middle button on your mouse or select [ChalkBoard] from the menu.
The tool bar contains the following icons.

 Drag ................. Drags to move the tool bar.
 Pen ................... Left-click and drag to draw. Left-click 
 or right-click the pen icon to display the pen palette containing four
lines of different thickness from which you can select a line you prefer by left-clicking.
 Color ................ Selects a color. Left-click to display the color palette from which you can select a color you prefer by left-
clicking.
 Eraser ............... Left-click and drag to erase part of a drawing. Left-click 
 or right-click the eraser icon to display the eraser
palette containing four erasers of different thickness from which you can select an eraser you prefer by left-
clicking.
 Clear ................. Left-click to clear the drawing completely from the ChalkBoard screen.
 Hide .................. Hides the tool bar by left-clicking. Right-clicking anywhere on the screen displays the ChalkBoard tool bar
again.
 Exit ................... Clears the complete drawing and exits the ChalkBoard.
NOTE:
•The menu is not available while you display the ChalkBoard screen.
•Selecting another source or switching slides in the Viewer clears a drawing completely.


  
						

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4. Convenient Features

 Preventing Unauthorized Use of the Projector
Assigning a keyword prevents the projector from being used by unauthorized individuals.
Assigning a Keyword for the first time
1. Press the MENU button.
The menu will be displayed.
2. Press the SELECT  button to highlight the [Setup] submenu and press the ENTER button.
The page tab [Basic] will be highlighted.
3. Press the SELECT  button twice to highlight the page tab [Security]. 
						

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4. Convenient Features
4. Press the SELECT  button four times to highlight [Security].
5. Press the ENTER button to display the Security screen.
6. Press the SELECT  button once to highlight the Keyword entry box and press the ENTER button.
The Software keyboard will be displayed. 
						

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4. Convenient Features
7. Enter an alphanumeric keyword using the Software keyboard
For example, to enter “1234”, follow the steps 7-1 to 7-4 below.
NOTE:
• Please make a note of your keyword.
• Do not use spaces (SP) in your keyword.
7-1. Highlight the number “1” and press the ENTER button.
The asterisk “
” will be displayed in the Keyword entry box.
7-2. Press the SELECT 
 button once to highlight “2” and press the ENTER button.
The asterisk “
” will be displayed in the Keyword entry box.
7-3. For “3” and “4”, use the same procedure as step 7-2.
The asterisk “
” will be displayed in the Keyword entry box.
7-4. Press the SELECT 
 button to highlight [OK] and press the ENTER button.
The Software keyboard will disappear.
8. Press the SELECT 

 button once to highlight [Off] and press the SELECT  button to highlight [On].
9. Press the SELECT 
 button to highlight [OK] and press the ENTER button.
The confirmation screen will be displayed.
10.Select [Yes] and press the ENTER button.
The Security Function is now enabled.
NOTE: A PC card can be used as a protect key. You can skip the keyword entry by inserting a registered PC card when turning on the
projector. (→ page 82) 
						

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4. Convenient Features
Checking If Security is enabled
Turn off the projector and turn it back on to check if the Security function is enabled.
1. Press the POWER (ON/STANDBY) button.
The [Power Off / Are you sure?] message will appear.
Press the ENTER button or the POWER (ON/STANDBY) or the POWER OFF button again.
The lamp lights off and the POWER indicator flashes orange. Please wait until the POWER indicator changes from
flashing to steady light.
2. When the POWER indicator lights steady orange, push the Main POWER switch to the off position (O).
The projector will turn off.
3. Push the Main POWER switch to the on position (I).
The POWER indicator lights orange. The projector is in standby condition.
4. Press and hold the POWER (ON/STANDBY) button for a minimum of two seconds.
The projector will turn on. The [Projector is locked! Enter your keyword.] message will be displayed at the bottom of
the screen.
5. Press the MENU button.
The Keyword entry screen will be displayed
6. Press the ENTER button.
The Software keyboard will be displayed.
7. Use the same procedures as steps 1 to 7 described in the “Assigning a Keyword for the first time” section
to enter “1234”.
Each time one number is entered, an “
” (asterisk) will appear. Keyword appears as asterisks so the real keyword
is hidden.
8. After entering your keyword, highlight [OK] and press the ENTER button.
The Software keyboard will disappear. This will allow you to operate the projector. 
						

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Disabling the Security
1. Press the MENU button.
The on-screen menu will be displayed.
NOTE: Immediately after the projector has been turned on and the “Projector is locked! Enter your keyword.” message is
displayed at the bottom of the screen, pressing the MENU button will display the Keyword entry will be displayed. At this time,
pressing the MENU button will display the on-screen menu.
2. Press the SELECT 
 button to highlight [Setup] and press the ENTER button.
The page tab [Basic] will be highlighted.
3. Press the SELECT 
 button twice to highlight the page tab [Security].
4. Press the SELECT 
 button four times to highlight [Security] and press the ENTER button.
The Keyword entry screen will be displayed
4. Convenient Features
5. Press the ENTER button.
The Software keyboard will be displayed.
6. Use the same procedures as steps 1 to 7 described in the “Assigning a Keyword for the first time” section
to enter “1234”.
Each time one number is entered, an “
” (asterisk) will appear. Keyword appears as asterisks so the real keyword
is hidden.
7. After entering your keyword, highlight [OK] and press the ENTER button.
The Software keyboard will disappear. The Security screen will be displayed.
8. Highlight [On] and press the SELECT 
 button to highlight [Off].
9. Press the SELECT 
 button to highlight [OK] and press the ENTER button.
The Security Function is now disabled.
NOTE: Do not forget your keyword. However, if you forget your keyword, NEC or your dealer will provide you with your Release Code
upon proof of ownership. 
						

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4. Convenient Features
 Using a USB Memory Device
The projector is compatible with a USB memory device which sup-
ports the viewer and security features.
•To use a USB memory device, connect the device to the USB
port (type A).
•Select one of the drive icons for your USB memory in a pane on
the left side of the Viewer window.
•To use a USB memory device as a Protect key for Security func-
tion, select one from the Drive icons in the Security setting screen.
(→ page 82)
NOTE:
•Use commercially available USB memory devices. Some USB memory devices (brands) may not work. See our website for
available USB memory devices:http://www.nec-pj.com
•The projector does not support NTFS formatted flash memory card or USB memory device.
Be sure to use a flash memory card or USB memory device formatted with the FAT32, FAT16 or FAT file system.
To format your flash memory card or USB memory device in your computer, refer to the document or help file that comes with
your Windows.
•You cannot use a USB memory device when connecting a USB mouse to the projector.
•Do not do the following while the USB memory device’s access indicator is lit or flashing (while data is being accessed.) Doing so
can damage your USB memory device. Back up your data in case it will need to be restored.
*Pulling out the USB memory device from the USB port of the projector.
*Turning off the main power switch or unplugging the power cable.
•The drive for ”USB 1-4” is displayed only when the USB memory device is connected to the projector.
•Some USB memory devices (brands) cannot be used as Protect key for the projector’s Security function.
CAUTION: Do not insert a USB memory device into the LAN port (RJ-45). Doing so can cause damage to the LAN
port (RJ-45).
PC CARDCOMPONENT INUSB LANAUDIO INCOMPUTER 3 IN
COMPUTER 1 IN COMPUTER 2 IN
PC CONTROLMONITOR OUT
AUDIO OUT S-VIDEO IN VIDEO INAUDIO INCb/Pb
L/MONO R YCr/Pr
AC IN 
						

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 Operation Using an HTTP Browser
Overview
The use of HTTP server functions will allow control of the projector from a web browser without the installation of
special software. Please be sure to use “Microsoft Internet Explorer 4.x” or a higher version for the web browser. (This
device uses “JavaScript” and “Cookies” and the browser should be set to accept these functions. The setting method
will vary depending on the version of browser. Please refer to the help files and the other information provided in your
software.)
NOTE:
*The display’s or button’s response can be slowed down or operation may not be accepted depending the settings of your network.
Should this happen, consult your network administrator.
*The projector may not respond if its buttons are repeatedly pressed in rapid intervals. Should this happen, wait a moment and
repeat. If you still can’t get any response, turn off and back on the projector.
Access is gained to the HTTP server functions by specifying
 http://  /index.html
in the entry column of the URL.
CAUTION:
Do not use the HTTP Server functions and PC Control Utility 3.0 included on the supplied CD-ROM. Using both at
the same time may result in a connection failure or slow response.
Preparation Before Use
Make network connections and set up the projector and confirm that it is complete before engaging in browser opera-
tions. (→ [LAN Mode] on page 86)
Operation with a browser that uses a proxy server may not be possible depending on the type of proxy server and the
setting method. Although the type of proxy server will be a factor, it is possible that items that have actually been set
will not be displayed depending on the effectiveness of the cache, and the contents set from the browser may not be
reflected in operation. It is recommended that a proxy server not be used unless it is unavoidable.
Handling of the Address for Operation via a Browser
Regarding the actual address that is entered for the address or entered to the URL column when operation of the
projector is via a browser, the host name can be used as it is when the host name corresponding to the IP address of
the projector has been registered to the domain name server by a network administrator, or the host name corre-
sponding to the IP address of the projector has been set in the “HOSTS” file of the computer being used.
Example 1: When the host name of the projector has been set to “pj.nec.co.jp”,
http://pj.nec.co.jp/index.html
is specified for the address or the entry column of the URL.
Example 2: When the IP address of the projector is “192.168.73.1”, access is gained to the
HTTP server functions by specifying
http://192.168.73.1/index.html
for the address or the entry column of the URL.
4. Convenient Features 
						

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Structure of the HTTP Server
Power: This controls the power of the projector.
On ................... Power is switched on.
Off ................... Power is switched off.
Volume: This controls the volume of the projector.

..................... Increases the volume adjustment value.
..................... Decreases the volume adjustment value.
Mute: This controls the mute function of the projector.
Picture On ....... Mutes the video.
Picture Off ....... Cancels the video muting.
Sound On ........ Mutes the audio.
Sound Off ........ Cancels the audio muting.
OSD On .......... Mutes the on-screen display.
OSD Off .......... Cancels the muting of the on-screen display.
All On .............. Mutes each of the video, audio, and on-screen display functions.
All Off .............. Cancels the muting of each of the video, audio, and on-screen display functions.
Picture: Controls the video adjustment of the projector.
Brightness 
... Increases the brightness adjustment value.
Brightness ... Decreases the brightness adjustment value.
Contrast 
...... Increases the contrast adjustment value.
Contrast ...... Decreases the contrast adjustment value.
Color 
........... Increases the color adjustment value.
Color ........... Decreases the color adjustment value.
Hue 
............. Increases the hue adjustment value.
Hue ............. Decreases the hue adjustment value.
Sharpness 
... Increases the sharpness adjustment value.
Sharpness ... Decreases the sharpness adjustment value.
•The functions that can be controlled will vary depending on the signal being input to the projector.
4. Convenient Features 
						

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Source Select: This switches the input connector of the projector.
Computer1 ...... Switches to the COMPUTER 1 IN connector.
Computer2 ...... Switches to the COMPUTER 2 IN connector.
Computer3 ...... Switches to the COMPUTER 3 IN connector. (LT380 only)
Component ..... Switches to the COMPONENT IN connectors.
Video ............... Switches to the VIDEO IN connector.
S-Video ........... Switches to the S-VIDEO IN connector.
Viewer ............. Switches to the Viewer.
LAN ................. Switches to a LAN signal.
Projector Status: This displays the condition of the projector.
Lamp Life Remaining..... Displays the remaining life of the lamp as a percentage.
Lamp Hours Used ....... Displays how many hours the lamp has been used.
Filter Hours Used ........ Displays how many hours the filter has been used.
Projector Hours Used . Displays how many hours the projector has been used.
Error Status ................. Displays the status of errors occurring within the projector.
Refresh ....................... Updates the display of the following conditions.
4. Convenient Features