Epson Powerlite 7250 Users Guide

							Connecting to a Computer
23
Connecting the Video and Monitor Cables
First connect the projector video cable and computer monitor cable. 
Refer to this illustration while following the steps below.
Computer 1 port
monitor cableprojector video cable
Computer 
Out port 
						

							1    Setting Up the Projector
 24
1. If you will be viewing the video on your computer monitor as well 
as the projector screen, disconnect the monitor cable from the 
video port on the back of your computer. Then connect the 
monitor cable to the projector’s Computer Out port, as shown 
below. (This is useful when you need to view the video output but 
the projection screen is behind you.) 
2. Connect one end of the projector video cable to the projector’s 
Computer 1 port. (Use the Computer 2 port if you are 
connecting a second computer.) 
						

							Connecting to a Computer
25
3. Connect the other end of the projector video cable to the 
computer’s video port.
4. Tighten the screws on all connectors.
Connecting the Mouse and Serial Cables
If you want to use the remote control as a mouse or use the ELP 
Link IV software, you need to connect the main cable. It provides 
connectors for:
❐The PS/2 mouse or USB cable (to use the remote control as a 
mouse)
❐The serial cable (to use the ELP Link IV software)
Refer to this illustration while following the steps below. 
PS/2 or USB cable
main cable9-pin serial cable
Mouse/Com 1 port
 
  
						

							1    Setting Up the Projector
 26
1. Connect the round end of the main cable to the projector’s 
Mouse/Com 1 port. (Use the Mouse/Com 2 port if you are 
connecting a second computer, and make sure the Computer 
2/BNC video switch on the rear of the projector is set to the 
Computer 2 position.)
2. To use the remote control as a wireless mouse, connect the PS/2 
mouse or USB cable included with the projector to the MOUSE 
terminal on the square end of the main cable.
3. Disconnect your mouse from the mouse port on the back of your 
computer and replace it with the other end of the PS/2 mouse or 
USB cable. (Your computer’s mouse will be disabled while you are 
using the remote control as a mouse.) 
						

							Connecting to a Computer
27
Note: If your system uses a serial mouse, perform steps 2 and 3 using 
the PC mouse serial cable instead of the PS/2 mouse or USB cable (not 
shown in the illustration).
4. To use the ELP Link IV software or to program new effects for the 
Effects buttons on the remote control, connect one end of the 
serial cable to the SERIAL terminal on the square end of the main 
cable. 
Connect the other end of the serial cable to the serial port on the 
back of your computer.
Note: You will not be able to use ELP Link IV software if your system 
has only one serial port that is being used to support a serial mouse.
5. Tighten the screws on all connectors. 
						

							1    Setting Up the Projector
 28
Connecting the Audio Cable
1. If you will be using audio, connect one end of the audio cable to 
the Audio 1 jack on the projector. (Use the Audio 2 jack if you 
are connecting a second computer.)   
2. Connect the other end of the audio cable to the speaker or audio 
out port on the computer’s sound card. 
audio cable Audio 1 jack 
						

							Connecting to a Computer
29
Connecting to a PC Laptop Computer 
To connect the projector to your PC laptop computer, you need to:
❐Connect the projector video cable
❐Connect the mouse and/or serial cable (if you want to use the 
remote control as a mouse or use the ELP Link IV software)
❐Connect the audio cable (if you’ll be projecting with audio)
Follow the steps in each section for the cables you need to connect. 
Before beginning, turn off the projector and computer if they are on.
Note: Laptop configurations vary. See your computer manual for the 
location of the ports needed to connect your projector.
Connecting the Video Cable
First connect the projector’s video cable to your laptop. 
1. Connect one end of the projector video cable to the projector’s 
Computer 1 port. (Use the Computer 2 port if you are 
connecting a second computer.)
projector video cable Computer 1 port 
						

							1    Setting Up the Projector
 30
2. Connect the other end of the video cable to the laptop’s video 
(monitor) port.
3. Tighten the screws on all connectors.
Connecting the Mouse and Serial Cables
If you want to use the remote control as a mouse or use the ELP 
Link IV software, you need to connect the main cable. It provides 
connectors for:
❐The PS/2 or USB cable (to use the remote control as a mouse)
❐The serial cable (to use the ELP Link IV software)
Refer to this illustration while following the steps below.
PS/2 or USB 
9-pin serial
main cablecable Mouse/Com 1 
port
cable 
						

							Connecting to a Computer
31
1. Connect the round end of the main cable to the projector’s 
Mouse/Com 1 port. (Use the Mouse/Com 2 port if you are 
connecting a second computer, and make sure the Computer 
2/BNC video switch on the rear of the projector is set to the 
Computer 2 position.)
2. To use the remote control as a wireless mouse, connect the PS/2 or 
USB cable included with the projector to the MOUSE terminal 
on the square end of the main cable. 
3. Connect the 6-pin (mini-DIN) end of the PS/2 mouse cable to the 
external mouse port or connect the USB cable to the USB port on 
your laptop. 
						

							1    Setting Up the Projector
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Note: If your laptop uses a serial mouse, perform steps 2 and 3 using 
the PC serial mouse cable instead of the PS/2 or USB cable (not 
shown in the illustration.) 
4. To use the ELP Link IV software or to use the Effects buttons on 
the remote control, connect one end of the serial cable to the 
SERIAL terminal on the square end of the main cable. 
5. Connect the other end of the serial cable to the serial port on the 
back of your computer.
Note: You will not be able to use ELP Link IV software if your laptop 
has only one serial port that is being used to support a serial mouse.
6. Configure your laptop to work with an external mouse.
Note: You may have to set the display to appear on both the laptop’s 
screen and the projector. Some laptops let you change this setting with 
the keyboard’s function keys or by using a setup utility provided by the 
computer manufacturer. Check your laptop’s manual or online help 
for instructions.