Gefen EXT-DVI-441N User manual

www.gefen.com
®
4x1 DVI Switcher
EXT-DVI-441N
User Manual

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Technical Support:
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Technical Support Hours:
8:00 AM to 5:00 PM Monday thru Friday Pacific Time
Write To:
Gefen, LLC
c/o Customer Service
20600 Nordhoff St
Chatsworth, CA 91311
www.gefen.com
[email protected]
Notice
Gefen, LLC reserves the right to make changes in the hardware, packaging and
any accompanying documentation without prior written notice.
4x1 DVI Switcher is a trademark of Gefen, LLC
© 2010 Gefen, LLC, All Rights Reserved
All trademarks are the property of their respective owners
Rev A5

CONTENTS
1 Introduction
2 Operation Notes
3 Features / Package Includes
4 Panel Layout
5 Panel Descriptions
6 Connecting and Operating the 4x1 DVI Switcher
7 RMT-4IR Remote Description
8 RMT-4IR Remote Installation
9 IR Remote Control and 4x1 Switcher Configuration
10 EDID Notes
11 EDID Notes, Continued
12 RS-232 Serial Control Interface
13 RS-232 Serial Control Commands
14 RS-232 Serial Control Commands, Continued
15 RS-232 Serial Control Commands, Continued
16 RS-232 Serial Communication -- Uploading EDID
17 Specifications
18 Warranty

1
INTRODUCTION
Congratulations on your purchase of the Gefen 4x1 DVI Switcher. Your complete
satisfaction is very important to us.
Gefen
Gefen delivers innovative, progressive computer and electronics add-on solutions
that harness integration, extension, distribution and conversion technologies.
Gefen’s reliable, plug-and-play products supplement cross-platform computer
systems, professional audio/video environments and HDTV systems of all sizes
with hard-working solutions that are easy to implement and simple to operate.
The Gefen 4x1 DVI Switcher
The rack-mountable Gefen 4x1 DVI Switcher offers an economical solution by
eliminating the need to purchase many displays for each DVI source in a studio
or lab situation. A plug-and-play solution, the 4x1 DVI Switcher shares one DVI
display with up to four computers or other DVI video sources, saving space on
your desktop. The source computer is selected using the included IR remote
control or through RS-232 control.
How It Works
The DVI monitor is connected to the switcher’s output. Up to four DVI sources
connect to the switcher’s DVI inputs using included high quality DVI cables.
The included power supply is connected to the switcher via the locking power
plug and then to a power outlet. The currently selected computer’s video signal
appears on the shared monitor. Video sources are selected/switched using the
RMT-4IR remote control, RS-232 control, or the input selector push button on the
front panel of the switcher.

OPERATION NOTES
2
READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE GEFEN 4X1 DVI SWITCHER
• The 4x1 DVI Switcher will take any of up to four (4) DVI single-link resolution
inputs and switch them, one at a time, to a DVI output device such as a
display/monitor or projector. Resolutions can be up to 1920x1200.
• The 4x1 DVI Switcher is housed in a metal box for better RF shielding.
• Computers must be turned on one at a time and the switcher must be
selected to the computer that is booting up. Afterwards, switching may occur
in any order. Please see page 6 for further details.

3
FEATURES
Features
• Switches easily between any four DVI sources
• Maintains highest resolution single-link DVI at 1920x1200
• Discrete IR remote control included
• Serial RS-232 remote port for switching via automated control or PC
• Supports DDWG standards for DVI monitors
Package Includes:
(1) Gefen 4x1 DVI Switcher
(4) 6 ft. DVI cables
(1) IR Remote Control Unit
(1) 5V DC Power Supply
(1) User Manual

4
PANEL LAYOUT
Back Panel
1234
56789
Front Panel

5
PANEL DESCRIPTIONS
1 Source Selection Indicator LEDs (Front Panel)
These LEDs visually confirm the currently selected DVI source.
2 IR Sensor (Front Panel)
Receives IR control signals from the handheld Infrared remote control included
with the DVI Switcher.
3 Source Selector Buttons 1-4 (Front Panel)
When any of these buttons is pressed, it tells the Switcher to display the
corresponding numbered input source on the DVI output.
4 Power Indicator LED (Front Panel)
Indicates when the 4x1 DVI Switcher is correctly operating after receiving 5V DC
power from itsAC power supply (included).
5 5V Power Input Jack (Back Panel)
Supplies power to the 4x1 DVI Switcher from the included external 5V DC
power supply.
6 DVI Source Input Ports 1-4 (Back Panel)
DVI video sources one through four attach to the 4x1 DVI Switcher.
7 DVI Output Port (Back Panel)
This DVI output port is connected to the display device (Monitor, Projector).
8 RS-232 Serial Communications Interface (Back Panel)
Provided for external control of the 4x1 DVI Switcher. Please see the section
below which explains in detail the procedures necessary to send commands to
the Switcher via RS-232 protocols.
9 IR Extender Port (Back Panel)
This jack allows connection of an optional IR extension cable and IR eye, Gefen
Part No. EXT-RMT-EXTIR. The IR Extender allows the 4x1 DVI Switcher to
be located up to 6 feet away from the IR Eye behind furniture or otherwise
concealed in an unobtrusive location with only the IR Eye showing.

6
CONNECTING AND OPERATING THE 4X1 DVI SWITCHER
How to Connect the 4x1 DVI Switcher to your devices:
1. Connect the supplied DVI cables from the DVI sources into the 4x1 DVI
Switcher’s Inputs.
2. Connect the cable from your display (monitor or projector) into the DVI Out
of the 4x1 DVI Switcher.
3. Connect the included 5V power supply, then plug it into the wall. Turn on the
DVI display or projector first, then the video sources. Turn on the 4x1 DVI
Switcher by screwing its 5V DC power supply tip into the receptacle in the
rear of the chassis.
Note: Computers must be turned on one at a time and the switcher must
be selected to the computer that is booting up. This is so that monitor
information (EDID) can be transmitted from the display to each computer.
After one computer completes the startup process, you can boot up the
second computer and repeat the process with the remaining computers.
This can be avoided with the use of the LOCAL EDID mode (page 11)
that will constantly supply each computer with an EDID. In this scenario, a
stored EDID, or user uploaded EDID, is supplied to each input for use by
the connected source device. Then, each computer can boot up in any order
and at anytime, regardless of which computer the switch is selected to.
How to Operate the 4x1 DVI Switcher:
4. Use the RMT-4IR remote control to remotely switch between DVI video
sources.
5. Alternatively, use a RS-232 control system such as a PC with
communications software (for example, Microsoft’s Hyperterminaltm) or an
automated control system such as Crestron.tm

7
4X1 DVI SWITCHER REMOTE DESCRIPTION
The RMT-4IR remote control will allow the user to select which of 4 DVI sources will
be displayed. Please use the information below when selecting the desired source
for output to a display or other DVI video receiving device.
RMT-4IR Button DVI Source
11
22
33
44