Gefen EXT-DVI-441DL User manual

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

ASKING FOR ASSISTANCE
Technical Support:
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Technical Support Hours:
8:00 AM to 5:00 PM Monday thru Friday PST
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 DL Switcher is a trademark of Gefen, LLC
© 2011 Gefen, LLC. All rights reserved.
All trademarks are the property of their respective companies.
Rev A10

CONTENTS
1 Introduction
2 Operation Notes
3 Features
4 Panel Layout
5 Panel Descriptions
6 Connecting and Operating The 4x1 DVI DL Switcher
7 RMT-4IR Remote Control Description
8 4x1 DVI DL Switcher Remote Installation
9 4x1 Remote and Switcher Configuration
10 EDID Modes
12 DL (Dual Link) Only Modes
13 RS-232 Serial Control
14 RS-232 Serial Control Commands
14 EDID Management
20 Routing Commands
22 Rack Mount Installation
23 Specifications
24 Warranty

1
INTRODUCTION
Congratulations on your purchase of the 4x1 DVI DL 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 DL Switcher
The rack-mountable Gefen 4x1 DVI DL 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 DL Switcher shares one
dual-link 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 DL SWITCHER
• The 4x1 DVI DL Switcher will take any of up to four (4) DVI dual-link or
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
3840x2400.
• The 4x1 DVI DL Switcher is housed in a metal box for better RF shielding.
• By default, the EDID of the attached display is copied to all the local inputs.
Make sure that the display is connected to the switcher before applying
power.

3
FEATURES
Features
• Switches easily between any four DVI-SL or DVI DL sources
• Maintains highest resolution dual link DVI
• Supports resolutions up through 3840x2400
• EDID Storage and programming for best source/display compatibility
• Extends the range of the video signal on the DVI outputs up to 50 feet
• Discrete IR remote control included
• Serial RS-232 port for switching input sources via automated control or PC
• Supports DDWG standards for DVI monitors
• Rack ears included
Package Includes
(1) 4x1 DVI DL Switcher
(4) 6-ft Dual Link DVI cables (M-M)
(1) 5V DC Power Supply
(1) User’s Manual
(1) IR remote control
(1) Set of Rack Ears

4
PANEL LAYOUT
Back Panel
Front Panel
68
9
7
5
4
2
13

5
PANEL DESCRIPTIONS
1 External IR Port
For connection of external IR extension device such as the Gefen IR Extender
(part # EXT-RMT-EXTIR).
2 IR Receiver
Receives IR signal from the handheld Infrared remote control unit included with
the product.
3 DVI Signal Status LEDs 1-4
Provide visual confirmation of the currently selected DVI input signal out of the
four DVI input ports.
4 DVI Input Selector
Push-button switch cycles the next DVI input 1-4 in a forward sequence starting
again at 1.
5 Power Indicator LED
Indicates when the 4x1 DVI DL Switcher is receiving 5V DC power from its
included AC power supply.
6 5V Locking Power Receptacle
Supplies power to the 4x1 DVI DL Switcher from the included external 5V DC
power supply. The 5V power supply has a locking power tip which screws into
this receptacle.
7 DVI Input Ports 1-4
DVI video sources one through four attach to the 4x1 DVI DL Switcher.
8 DVI Output Port
This DVI output port is connected to the display device (Monitor, Projector).
9 RS-232 Serial Communications Interface
Provided for external control of the 4x1 DVI DL Switcher.

6
CONNECTING AND OPERATING THE 4X1 DVI DL SWITCHER
How to Connect the 4x1 DVI DL Switcher to your devices:
1. Connect user 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 DL Switcher.
3. Connect the 5V power supply, then plug it into the wall. Turn on the DVI
display or projector first, then the video sources (computers). Turn on
the 4x1 DVI DL Switcher by screwing its 5V DC power supply tip into the
receptacle in the rear of the chassis.
Note: The Switcher retrieves device resolution and video timing capability
information called EDID from the display and feeds it to all connected input
sources. This mode of operation is called LOCAL EDID mode. It allows
a much faster setup time and improved operational stability since input
sources do not need to individually collect and store EDID on their own.
If some sources do not display correctly, you can individually configure each
input source and/or program custom EDIDs (such as standard compatible
resolutions) into the Switcher, or alternately set each input source to directly
read EDID from the display device (with the Local EDID Mode turned OFF).
These procedures are covered in detail on pages 10-11 along with EDID
concepts in general.
Wiring Diagram for the 4x1 DVI DL Switcher
EXT-DVI-441DL
Computer
Computer
Computer
Computer
Switcher
Dual Link DVI Display
DUAL LINK DVI CABLE

7
4X1 DVI DL SWITCHER REMOTE DESCRIPTION
Input Selection
Buttons
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
LED Indicator