Gefen EXT-DVIKVM-441 User manual

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

ASKING FOR ASSISTANCE
Rev X3
Technical Support:
Telephone [phone]
[phone]
Fax [phone]
Technical Support Hours:
8:00 AM to 5:00 PM Monday thru Friday PST (Pacific Standard Time)
Write To:
Gefen Inc.
c/o Customer Service
20600 Nordhoff St
Chatsworth, CA 91311
www.gefen.com
[email protected]
Notice
Gefen Inc. reserves the right to make changes in the hardware, packaging and
any accompanying documentation without prior written notice.
4x1 DVI KVM Switcher is a trademark of Gefen Inc.
© 2009 Gefen Inc., All Rights Reserved
All trademarks are the property of their respective companies

CONTENTS
1 Introduction
2 Operation Notes
3 Features
4 Panel Layout
5 Panel Descriptions
6 Connecting & Operating The 4x1 DVI KVM Switcher
7 Operation Notes & Troubleshooting
8 RMT-4IR Remote Control Description
9 4x1 DVI KVM Switcher Remote Installation
10 RMT-4IR Remote And 4x1 KVM Switcher Configuration
11 Rack Mount Installation
12 Specifications
13 Warranty

1
INTRODUCTION
Congratulations on your purchase of the 4x1 DVI KVM 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 KVM Switcher
The rack-mountable Gefen 4x1 single link DVI KVM Switcher offers an
economical solution by eliminating the need to purchase many displays for each
computer in a studio or lab situation. A plug-and-play solution that supports both
Macintosh and IBM-PC computers, the 4x1 DVI KVM Switcher shares one DVI
display with up to four computers or other DVI video sources. A single USB 2.0
port, keyboard & mouse ports, and an analog audio jack are also switched. The
switcher saves space on your desktop by eliminating a crowded workspace full
of DVI monitors, keyboards & mice, and USB and audio cables. Switching of DVI
sources is easy and reliable.
How It Works
The DVI monitor is connected to the 4x1 DVI KVM Switcher’s output. Up to four
DVI video 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 DVI
video signal appears on the shared monitor. DVI Video sources (and optionally
keyboards & mice, USB and audio cables) 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.

2
OPERATION NOTES
READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE GEFEN 4X1 DVI KVM SWITCHER
• The 4x1 DVI KVM 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. Supported resolutions can be up to
1920x1200.
• The 4x1 DVI KVM Switcher is housed in a metal box for better RF shielding.

3
FEATURES
Features
• Switches easily between any four DVI sources.
• Switches USB 2.0, keyboard & mouse, and analog audio
• Maintains highest resolution single link DVI
• Supports resolutions up through 1920x1200
• Discrete IR remote control included
• Serial RS-232 remote port for switching via automated control or PC
• Supports DDWG standards for DVI monitors
• Rack ears included
Package Includes
(1) 4x1 DVI KVM Switcher
(1) RMT-4IR Remote Control
(1) 5V DC Power Supply
(4) 6-foot Dual Link DVI cables
(4) 6-foot USB cables
(4) 6-foot 3.5mm jack analog audio cables
(1) Set of rack ears
(1) User’s Manual

4
Back Panel
PANEL LAYOUT
Front Panel
4
23
1
9 10 11
8765
12 13

5
PANEL DESCRIPTIONS
1 IR Receiver
Receives IR signal from the handheld Infrared remote control unit included with
the 4x1 DVI KVM Switcher.
2 DVI Signal Status LEDs 1-4
Provide visual confirmation of the currently selected DVI input signal being
output to the DVI display device.
3 DVI Input Selector Bank
Push-button switches select the next DVI input.
4 Power Indicator LED
Indicates when the 4x1 DVI KVM Switcher is receiving 5V DC power from its
includedAC power supply.
5 3.5mm Analog Audio Inputs 1-4
Audio Sources 1-4 connect to the switcher here on 3.5mmAnalogAudio Inputs.
6 3.5mm Analog Audio Output
This audio output port connects to an external amplified audio device. The
selected audio input will be output through this port.
7 USB Type A Control Ports 1-2
The keyboard & mouse for controlling the selected remote computer or device
connects to the switcher here.
8 USB Type B Ports 1-4
USB devices (typically computers) one through four connect to the switcher here
9 5V Power Receptacle
Supplies power to the 4x1 DVI KVM Switcher from the included external 5V DC
power supply.
10 DVI Input Ports 1-4
DVI video sources 1-4 attach to the 4x1 DVI KVM Switcher.
11 DVI Output Port
This DVI output port is connected to the display device (Monitor, Projector).
12 RJ45 Wired Remote Port
Wired contact-closure remote control (Gefen’s EXT-RMT-4) attaches here.
13 IR Remote Extender Port
The optional IR Extender (Gefen’s EXT-RMT-EXTIR) attaches here to extend
the range of the included IR remote by placing the infrared eye farther from the
unit. Please see the bottom of page 8 for more information.

6
CONNECTING & OPERATING THE 4X1 DVI KVM SWITCHER
How to Connect the 4x1 DVI KVM Switcher to your devices:
1. Connect your computers’ DVI, USB, and Audio sources to the 4x1 DVI KVM
Switcher inputs using the supplied cables.
2. Connect your USB and audio devices to the USB and audio outputs using the
supplied cables.
3. Connect your DVI-compliant display to the DVI output of the 4x1 DVI KVM
Switcher using a user-supplied DVI cable.
4. Connect the included 5V DC power supply to the Switcher by connecting its
5V DC power supply tip into the receptacle in the rear of the unit, then plug it
into the wall.
5. Turn on the DVI display or projector first, then the DVI video sources/
computers.
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.
How to Operate the 4x1 DVI KVM Switcher:
1. Use the RMT-4IR remote control to remotely switch between DVI video
sources.
2. Alternatively, use the front panel selector buttons.

7
OPERATION NOTES & TROUBLESHOOTING
USB
If your USB stops functioning correctly, you can manually re-intialize the
USB hub in the switch by pushing twice on the channel select button that
corresponds with the channel that the switcher is pointed at, on the front of
the unit. This will cause the channel selected LED to blink once letting you
know that the internal USB hub has been re-initialized. To have the USB
re-initialize automatically every time you switch, look under the 4x1 DVI
Switcher and locate the blank sticker. Peel it off to reveal a bank of four dip
switches. Find the dip switch labeled “4” and flip it to the ON position. Now
every time you switch the hub will re-initialize itself.
Video
When turning on or rebooting your computers, the 4x1 DVI KVM Switcher
must be selected to the computer that is booting until the computer
completes the boot cycle. This step can be eliminated using the Gefen DVI
Detective. If you lose your picture when you switch between sources you will
need a DVI Detective.

8
RMT-4IR REMOTE CONTROL DESCRIPTION
LED Indicator
Input Selection
Buttons
The RMT-4IR remote control will allow the user to choose which of the 4 DVI sources
or computers will be selected. Please use the information below when selecting the
desired source:
RMT-4IR Button DVI Source
11
22
33
44

9
4X1 DVI KVM SWITCHER REMOTE INSTALLATION
To use the RMT-4IR remote, remove the battery cover on the back of the remote
to reveal the battery compartment. Insert the included battery into the open battery
slot. The positive (+) side should be facing up. Ensure that both DIP (Dual Inline
Package) switches are in the OFF position. Replace the battery cover. The remote
ships with 2 batteries. One battery is needed for operation and the other battery is
complimentary.
IR Code Dip Switches
Empty Battery Slot
How to Operate the IR Extender Eye (optional Gefen p/n
EXT-RMT-EXTIR)
Plug in the IR extender eye to the extender port on the back of the
switcher. As soon as the IR extender eye is plugged in you can
extend your IR signal. The IR extender eye does not come included
with the 4x1 DVI KVM Switcher; it must be purchased separately.

10
RMT-4IR REMOTEAND 4X1 KVM SWITCHER CONFIGURATION
How to Resolve IR Code Conflicts
In the event that IR commands from other remote controls conflict with the
supplied RMT-4IR remote control, changing the remote channel will alleviate this
issue. The RMT-4IR remote control and the 4x1 DVI KVM Switcher both have
banks of DIP (Dual Inline Package) Switches for configuring the remote channel
that both units use to communicate. These settings must exactly match each
other for proper operation.
The DIP Switch bank on the RMT-4IR is located underneath the battery cover.
DIP Switch banks for the 4x1 DVI KVM Switcher are located on the underside of
the unit beneath a piece of metallic-like tape. The DIP switch bank (4 switches)
is for the adjustment of remote control frequencies and switch behavior.
Switches 1 and 2 on the RMT-4IR directly correspond to DIP Switches 1 and 2
on the 4x1 DVI KVM Switcher. Only switches 1 and 2 (of 4 in that bank) are used
for IR Code settings.
Remote Channel 1:
Default
1 2
Remote Channel 2:
1 2
Remote Channel 3:
1 2
Remote Channel 4:
1 2
Left: Picture of the opened rear battery
compartment of the RMT-4IR remote showing
the exposed DIP Switch bank between the
battery chambers.
4x1 DVI KVM Switcher
Remote Channel 1:
Default
Remote Channel 4:
1234
1234
Remote Channel 3:
1234
Remote Channel 2:
1234

11
Rear of unit
Front of unit
Rack mount ears are provided for installation of this unit into a 1U rack mount
space.
1. Locate the side screws on the unit.
2. Remove the front 2 screws that are located closest to the front of the unit.
3. Using the removed screws, screw the rack mounting bracket into the unit.
4. Repeat the procedure on the opposite side of the unit.
1
2
3
4
RACK MOUNT INSTALLATION

12
SPECIFICATIONS
Video Amplifier Bandwidth:........................................................................165 MHz
Input Video Signal:...............................................................................1.2 Volts p-p
Input DDC Signal:..........................................................................5 Volts p-p (TTL)
Single Link Range:....................................................................1080p/1920 x 1200
DVI Connector:.................................................... DVI-I 29-pin female (digital only)
USB Input Connection: ..............................................................................Type “B”
USB Output Connection: ...........................................................................Type “A”
Audio Connector: ......................................................................3.5mm mini-Stereo
Power Supply:...............................................................................................5V DC
Power Consumption:........................................................................20 Watts (max)
Dimensions:...................................................................17” W x 1.75” H x 4.375” D
Rackmountable:..............................................................................1U Rack Space
Shipping Weight:.............................................................................................9 lbs.

13
WARRANTY
G
e
f
en warrants the equipment it manu
f
actures to be
f
ree
f
rom de
f
ects in material
and workmanship.
I
f
equipment
f
ails because o
f
such de
f
ects and
G
e
f
en is noti
fi
ed within two
(
2
)
y
ears
f
rom the date o
f
shipment,
G
e
f
en will, at its option, repair or replace the
e
quipment, provided that the equipment has not been sub
j
ected to mechanical,
e
lectrical, or other abuse or modi
fi
cations. Equipment that
f
ails under conditions
other than those covered will be repaired at the current price o
f
parts and labor in
eff
ect at the time o
f
repair.
S
uch repairs are warranted
f
or ninet
y
(
90
)
da
y
s
f
rom
the da
y
o
f
reshipment to the Bu
y
er.
This warrant
y
is in lieu o
f
all other warranties expressed or implied, includin
g
without limitation, an
y
implied warrant
y
or merchantabilit
y
or
fi
tness
f
or an
y
p
articular purpose, all o
f
which are expressl
y
disclaimed.
1. Proo
f
o
f
sale ma
y
be required in order to claim warrant
y
.
2.
C
ustomers outside the U
S
are responsible
f
or shippin
g
char
g
es to and
f
rom
G
e
f
en.
3
.
C
opper cables are limited to a 30 da
y
warrant
y
and cables must be in their
ori
g
inal condition.
The in
f
ormation in this manual has been care
f
ull
y
checked and is believed to
be accurate. However,
G
e
f
en assumes no responsibilit
y
f
or an
y
inaccuracies
that ma
y
be contained in this manual. In no event will
G
e
f
en be liable
f
or
direct, indirect, special, incidental, or consequential dama
g
es resultin
g
f
rom
an
y
de
f
ect or omission in this manual, even i
f
advised o
f
the possibilit
y
o
f
such
dama
g
es. The technical in
f
ormation contained herein re
g
ardin
g
the
f
eatures and
s
peci
fi
cations is sub
j
ect to chan
g
e without notice.
For the latest warrant
y
covera
g
e in
f
ormation, please visit
G
e
f
en’s Warrant
y
web
p
a
g
e at http:
//
www.
g
e
f
en.com
/
kvm
/
aboutus
/
warrant
y
.
j
s
p
P
RODUCT REGISTRATIO
N
P
lease re
g
ister
y
our product online b
y
visitin
g
Gefen’s web site at
http://www.
g
efen.com/kvm/Re
g
istr
y
/Re
g
istration.
j
sp

20600 Nordhoff St., Chatsworth CA 91311
1-800-545-6900 818-772-9100 fax: [phone]
www.gefen.com[email protected]m
*ma-DVIKVM-441*
Rev X3