Epson Powerlite 755c Multimedia Projector Users Guide

							Presenting Through a Wireless Network71
Adding WEP Encryption
When you click the Security button on the Network screen, you see 
this screen: 
1. Highlight 
WEP and press Enter. 
2. For the WEP encryption setting, highlight 
128Bit or 64Bit and 
press Enter. 
3. For Format, highlight 
HEX to enable hexadecimal input, then 
press 
Enter. 
4. If you chose 
64Bit, highlight Key ID 1, 2, 3, or 4. 
5. Highlight the 
Encryption key text box and press Enter. The box 
turns yellow to indicate you are in input mode. Press the 
pointer button up to select individual letters in alphabetical 
order, or down to select letters in reverse order; then press the 
pointer button to the right to move to the next character 
position. When done typing your encryption key, press 
Enter.
Check with your network administrator for directions on entering 
a key for your network, and follow these general guidelines:
■For 128 bit WEP encryption with hexadecimal input, enter 
26 characters, from 0 to 9 and from A to F.
note
Text input for WEP 
encryption varies with 
different access points; check 
with your network 
administrator. Try 
ASCII 
first. If that doesn’t work, 
try 
Text2 and then Text3.
If you want to enter a blank 
space, use the space character 
that comes before the capital 
letter A.
If you want to enter 
numbers, use the numeric 
keypad while holding down 
the 
Num button on the 
remote control. Press the 
Num button again to exit 
numeric keypad mode. 
						

							72Presenting Through a Wireless Network
■For 64 bit WEP encryption with hexadecimal input, enter 10 
characters, from 0 to 9 and from A to F. 
■For 128 bit WEP encryption with ASCII or text input, enter 
13 alphanumeric characters.
■For 64 bit WEP encryption with ASCII or text input, enter 5 
alphanumeric characters.
6. When you’re done making settings, highlight the 
OK button at 
the top of the screen and press 
Enter. 
Adding WPA Security
When you click the Security button on the Network screen, you see 
this screen: 
1. Highlight 
WPA and press Enter. 
2. Highlight the 
PSK (pre-shared key) text box and press Enter. The 
text box turns yellow to indicate you are in input mode. Press the 
pointer button up to select individual letters in alphabetical 
order, or down to select letters in reverse order; then press the 
pointer button to the right to move to the next character 
position. When done typing the key, press 
Enter.
note
If you want to enter a blank 
space, use the space character 
that comes before the capital 
letter A.
If you want to enter 
numbers, use the numeric 
keypad while holding down 
the 
Num button on the 
remote control. Press the 
Num button again to exit 
numeric keypad mode. 
						

							Presenting Through a Wireless Network73
3. When you’re done making settings, highlight the OK button at 
the top of the screen and press 
Enter. 
Adding LEAP Authentication
When you click the Security button on the Network screen, you see 
this screen: 
1. Highlight 
LEAP, then press Enter. 
2. Enter the user name and password that match the settings on your 
authentication server: 
■Highlight the User name text box and press Enter. The box 
turns yellow to indicate you are in input mode. Press the 
pointer button up to select individual letters in 
alphabetical order, or down to select letters in reverse order; 
then press the  pointer button to the right to move to the 
next character position. When done typing the user name, 
press 
Enter.
■Highlight the Password text box and press Enter. The box 
turns yellow to indicate you are in input mode. Press the 
pointer button up to select individual letters in 
alphabetical order, or down to select letters in reverse order; 
note
If you want to enter a blank 
space, use the space character 
that comes before the capital 
letter A.
If you want to enter 
numbers, use the numeric 
keypad while holding down 
the 
Num button on the 
remote control. Press the 
Num button again to exit 
numeric keypad mode. 
						

							74Presenting Through a Wireless Networkthen press the  pointer button to the right to move to the 
next character position. When done typing the password, 
press 
Enter.
3. When you’re done making settings, highlight the 
OK button at 
the top of the screen and press 
Enter. 
Projecting Wirelessly
Once you’ve started EasyMP and set up your projector and computer 
in either Ad Hoc mode or Access Point mode, follow these steps to 
start NS Connection and project wirelessly. 
1. Make sure you’ve installed your 802.11G/B wireless card in your 
projector (see page 50).
2.Windows: Select 
EMP NS Connection from the Start menu.
Macintosh OS X: Double-click the 
EMP NS Connection icon in 
your Applications folder.
3. The first time you start NS Connection, you may see a dialog box 
asking you to select your network. Select the IP address for your 
computer’s network card and click 
OK.
note
If you don’t see your network 
adapter’s IP address, allow a 
minute for it to appear. If 
your access point or AirPort 
base station uses DHCP 
(
Distribute IP addresses 
setting is enabled for 
AirPort), sometimes it takes 
a minute for the server to 
pick up the IP address.
Once you’ve selected the IP 
address for your network 
adapter, you won’t see the 
Switch network dialog 
box when you start 
NS Connection. If you want 
to change to a different 
network adapter, click 
Extension on the EMP NS 
Connection dialog box, then 
click 
Switch LAN on the 
extension dialog box. 
						

							Presenting Through a Wireless Network75
You see the screen below. (If you have previously started NS 
Connection, this is the first screen you see.)
If the connection is working properly, you see your projector 
listed. If you have additional Epson projectors on the network, 
they are also listed, along with their status. 
The color of the status icon next to each projector’s name 
indicates its status:
■Gray: the projector is not connected
■Orange: the projector is connected to another computer
■Green: the projector is connected to your computer
If you don’t see your projector, check the following: 
■Make sure your wireless signal is strong enough to establish a 
connection. If you have a Macintosh, check the AirPort 
icon on the Macintosh menu bar. For Windows, see the 
documentation for your access point or computer network 
card. 
■Make sure you’re trying to connect to the right network. In 
Windows, verify that you’ve enabled your computer’s 
connection to the access point or that your wireless card or 
adapter is enabled, and that its SSID matches the projector’s 
ESSID. In Macintosh, check the AirPort status menu (click 
Select projector
note
If a projector is in use and is 
“locked,” you won’t be able to 
select it.
note
If none of these suggestions 
work, see the troubleshooting 
information beginning on 
page 162. 
						

							76Presenting Through a Wireless Networkthe AirPort icon on your menu bar) to make sure AirPort is 
turned on and the projector’s ESSID or your AirPort network 
is selected. 
■Make sure you aren’t projecting one of the EasyMP 
configuration screens. (You should see a message that the 
projector is ready to connect.) If you have to exit a 
configuration screen, restart NS Connection.
■Make sure the ESSID for your projector matches the SSID 
for your wireless card, adapter, or access point. If you have an 
AirPort base station, make sure the projector’s ESSID 
matches the AirPort network name. Remember that the 
ESSID is case-sensitive.
■Check the IP address for both your projector and your 
wireless card, adapter, access point, or AirPort base station. 
The first three segments of the IP address should be identical. 
The last segment of the projector’s IP address should be close, 
but not identical, to the last segment of the IP address for 
your wireless interface, access point, or base station.
■Restart your computer and start NS Connection again.
■If you still don’t see your projector, follow the instructions in 
“Connecting in IP Connect Mode” on page 80 to connect to 
the projector. 
note
The AirPort network name 
may be different than the 
AirPort base station name. 
To check the network name, 
start the AirPort Admin 
utility, select your base 
station, and click 
Configure. Then click 
Show All Settings. The 
network name appears on 
the AirPort tab. 
						

							Presenting Through a Wireless Network77
4. Once the name of your projector appears, select it and click 
Connect. If more than one projector is listed, you can select 
additional ones and connect to them at the same time. 
If the selected projector is already being used by another person, 
you can still connect to it (unless it is “locked”); doing so 
automatically disconnects the other user. If a projector is locked, 
you won’t be able to connect to it when it is in use.
5. If you set up the projector to prompt you for a keyword before 
connecting, you see a screen like this one: 
Type in the four-digit number displayed on the EasyMP Network 
screen and click 
OK.
6. Once the connection is established, you see your computer’s 
image transmitted to the screen, and a floating control bar on 
your computer desktop:
 
7. If necessary, you can drag the control bar out of the way on your 
screen. 
8. When you’re done with your presentation, click 
Disconnect on 
the control bar. 
note
If you want your 
presentation encrypted, 
click 
Extension and select 
Use encrypted 
communication
. 
This step enhances security 
but decreases the data 
transmission speed. 
Enter keyword
Windows
Macintosh 
						

							78Presenting Through a Wireless Network
Using the Control Bar
From the control bar, you can access these NS Connection features:  
Provides help for NS Connection.
Locks the projector while it is in use and 
prevents anyone else from connecting to 
it (Windows only)
Limits projection to PowerPoint 
presentations only (Windows only)
Lists projectors and specifies which ones 
are in use. 
Lets you access the projector’s menu 
system from an HTML browser 
window. See page 132 for more 
information.
Lets you keep the projected image on 
screen, even if the image on your 
computer changes. 
Turns off the image and sound. 
Lets you zoom in on a part of your 
image. 
Lets you change the brightness, contrast, 
and color mode. 
Lets you switch between the 
Video, and 
S-Video ports. 
Lets you switch between the computer 
and EasyMP.  
						

							Presenting Through a Wireless Network79
Clicking one of the buttons on the control bar may cause a submenu 
to appear above the control bar. For example, clicking the   button 
displays the following submenu:
 
If you’re using more than one projector, you can use the Projector 
drop-down menu to select the projector on which you want to make 
any of the following changes:
■Brightness
Increase or decrease brightness.
■Keystone
Click + to narrow the top edge of the screen, or – to narrow the 
bottom edge (this option functions like the   and   buttons 
on the projector’s control panel).
■Contrast
Increase or decrease image contrast.
■Color Mode
Lets you select from five preset modes to adjust the color and 
brightness for specific environments: 
sRGB for computer 
displays, 
Dynamic for presentations in bright rooms, 
Presentation for presentations in dark rooms, Theatre for 
optimizing movie images, and 
Living Room for video games.
When you’re done, click the arrow in the upper right corner to close 
the submenu.
Click to close 
						

							80Presenting Through a Wireless Network
Connecting in IP Connect Mode
You can establish a connection manually using IP Connect Mode 
even if your projector and computer are on a different subnet (Access 
Point mode only) or connecting over different routers. 
1. Start NS Connection (see page74). You see this screen: 
 
2. Click the Extension button. You see this screen:
note
Depending on your network, 
your projector and computer 
may connect over different 
routers even if they are in 
the same room. Try this 
method if you are unable to 
connect automatically.
Click here
Select this box