DVIGear DVI-4121 User manual

User Guide
DVI+HDCP 2x1 Switcher
DVI-4121

TABLE OF CONTENTS
I. Introduction
II. Liability Statement
III. Warranty
IV. Package Contents
V. Product Description
VI. Features
VII. Getting the Best Results
VIII. Connecting the Hardware
IX. Operation
X.  Specications
XI. Troubleshooting
XII. Related Products

I. INTRODUCTION
Thank you for purchasing DVIGear’s model DVI-4121 DVI + HDCP 2x1 Switcher.
This product has been designed to provide the highest level of performance,
signaldelityandreliability.ThisdeviceallowstwoDVIequippedsourcestobe
selectively switched to a single DVI input on a display. The unit is fully HDCP
compliant for usage with sources and displays that utilize this technology. To
ensure optimum performance, read this manual in its entirety prior to using this
product.Pleasefeelfreetocontactuswithanyquestionsorcommentsyoumay
have regarding this unit.
II. LIABILITY STATEMENT
ThisunithasbeendesignedandmanufacturedtoDVIGear’sstrictqualitystan-
dards. Every effort has been made to ensure that this product is free of defects.
Itistheresponsibilityoftheusertocheckthatitissuitableforhis/herrequire-
ments and that it is installed correctly. DVIGear cannot be held liable for any
directorindirectconsequentialdamagesarisingfromtheuseofthisproduct.
This statement does not affect the legal rights of the user in any way.
DVIGear reserves the right to revise any of its products when it is deemed neces-
sary or desirable.
All rights are reserved. No parts of this manual may be reproduced or transmit-
ted by any forms or means electronic or mechanical, including photocopying,
recording, or by any other information storage or retrieval system without the
written consent of DVIGear.
All third party trademarks and copyrights are recognized. The DVIGear logo is
the registered trademark of DVIGear. All other trademarks are the property of
their respective holders.
DVI-4121 User GuideDVIGear - 1-

III. WARRANTY
DVIGearwarrantstheequipmentitmanufacturestobefreefromdefectsinma-
terialandworkmanship.IfequipmentfailsbecauseofsuchdefectsandDVIGear
isnotifiedwithin3 yearsfromthedateofshipment,DVIGearwill,atitsoption,
repairorreplacetheequipment,providedthattheequipmenthasnotbeensub-
jectedtomechanical,electrical,orotherabuseormodications.Equipmentthat
fails under conditions other than those covered will be repaired at the current
price of parts and labor in effect at the time of the repair. Such repairs are war-
ranted for ninety days from the day of re-shipment to the buyer.
This warranty is in lieu of all other warranties expressed or implied, including
withoutlimitation,anyimpliedwarrantyormerchantabilityortnessforany
particular purpose, all of which are expressly disclaimed. The information in this
manual has been carefully checked and is believed to be accurate. However,
DVIGear assumes no responsibility for any inaccuracies that may be contained
in this manual. In no event will DVIGear be liable for direct, indirect, special,
incidental,orconsequentialdamagesresultingfromanydefectoromissionin
this manual, even if advised of the possibility of such damages. The technical
informationcontainedhereinregardingtheproductfeaturesandspecicationsis
subject to change without notice.
IV. PACKAGE CONTENTS
• Model DVI-4121 DVI + HDCP 2x1 Switcher
•Infrared Remote Control Unit
•AC Power Adapter (9 VDC)
• User Manual
DVI-4121 User GuideDVIGear - 2-

V. PRODUCT DESCRIPTION
The model DVI-4121 is a high-performance, remote controllable, HDCP compliant
DVI Switcher that delivers superior performance and reliability for a broad range
of PC and HDTV applications. Designed to meet the most demanding installation
requirements,theseunitsarehousedinarugged,yetcompactenclosure. This
unit is compatible with the full spectrum of single-link DVI signals with pixel rates up
to 165 MHz (1.65 GBit/sec.). This unit performs well with HDTV signals with
resolutions up to 1080p and PC resolutions up to 1920x1200 / 60Hz.
VI. FEATURES
• High performance unit in a compact, rugged enclosure
• Allows two DVI input signals to be switched to a single DVI display
• Supports DVI-I (analog and digital) inputs and outputs
• Fully HDCP compliant, supports signals with or without HDCP
• Supports HDTV resolutions up to 1080p and PC resolutions up to 1920x1200 /
60Hz
• Provides EDID emulation of the display connected on Output #1 to all other
outputs
VII. GETTING THE BEST RESULTS
Manyfactorscanadverselyaffectthequalityofadigitalvideosignalinadistri-
bution chain. When additional interconnects are added to the system, the pos-
sibility for signal degradation increases. The following points should be observed
in order to ensure optimal performance:
• Outputsourcedevice-thequalityoftheoutputsignalwilldependlargely
uponthetypeandqualityofinput(source)deviceused.Forinstance,some
DVD players perform better than others.
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DVI-4121 User GuideDVIGear - 4-
• Using Native Resolution - It is always best to set the output resolu-
tion of the source device to the native resolution and refresh rate of
the display device(s). This allows for the two units to work together in
the best fashion. Consult the owner’s manual for your display for more
information.
• Distance between the source and display devices - The length of cable
between the source(s) and display(s) should be minimized as much as
possible. When using the DVI-4121, the overall cable distance should
not exceed 15 meters (49 ft.) without proper signal management (e.g. DVI
Repeater, or DVI Extender).
• Connection Cables - For optimum performance, it is strongly suggested to
use DVIGear’s Super High Resolution™ DVI and HDMI cables.
• Interference from nearby electrical devices - Both electrical appliances and
electricalwiringcanhaveanadverseeffectonsignalquality.Avoidthatthis
productisplacedincloseproximitytouorescentlightxturesorappliances,
equipment,machinerythatrequireslargeamountsofACPowerastheycan
emitveryhighelectromagneticeldsthatcouldinterferewiththeperformance
of this product.
VIII. CONNECTING THE HARDWARE
Prior to connecting the unit, ensure that all devices have been powered
off.
1) Connect your DVI display to the switcher’s DVI output with a DVIGear Super
High Resolution™ cable.
2) Connect 2 DVI sources to the switcher’s inputs using a DVIGear Super High
Resolution™ DVI cable.
3) Plug the 9VDC power adapter in to the rear of the unit.
4) Plug the power adapter in to an AC socket.
5) PowerONtheswitcherrst,thenpowerONthedisplay-powerONthe
sources last.

DVI-4121 User GuideDVIGear - 5-
REMOTE
SELECT
DVI + HDCP 2x1 Switcher
DVI-4121
321
FRONT PANEL
1. Infrared Receiver for IR Remote
2. Input Selection button
3. Input Selection LED
2 INPUTS 1
9VDC
REMOTE
OUTPUT
C
+
-
87654
BACK PANEL
4. DC Power Adapter Input
5. Input for Optional IR Remote Receiver
6. DVI-I Output
7. DVI-I Input 1
8. DVI-I Input 2
Front Panel:
Back Panel:
IX. OPERATION

DVI-4121 User GuideDVIGear - 6-
IX. OPERATION
It is possible to select the input device you wish to access in two ways: using the
front panel input selection button, or via the supplied IR Remote Control Unit.
Front Panel Input Selection: The front panel input selection button [2] can
be used to select the desired source to be displayed. Pressing this button during
normaloperationwillcausetheinputdevicestobetoggledthroughsequentially.
IR Remote Control Selection: The desired source may be selected via the
supplied IR Remote Control Unit by pressing the appropriate input buttons.
12
A
BCD
1
2
3
1. Buttons 1 and 2 switch between the two sources
connected to Input 1 and Input 2.
2. The up and down buttons toggle between the
sources connected to Input 1 and Input 2.
3. If you have a problem with this IR Remote
ControlUnitconictingwithotherdevicesinthe
immediate environment, you may reprogram the re-
motetouseadifferentIRfrequency.Fourdifferent
frequencysettingsarepossible(A,B,C,D).The
defaultsettingisA.TochangetheIRfrequency
setting,pressandholdthedesiredIRfrequency
button for 2 seconds. The 7-segment LED display
will show the IR code for one second when the new
IR code is set.
IR Remote Control Unit:

X. SPECIFICATIONS
Performance
HDTV Resolutions Supported 480i, 480p; 720p; 1080i; 1080p
Computer Resolutions Supported Up to 1920x1200 @ 60Hz
Maximum Bandwidth Supported 165 MHz (analog)
Maximum Bitrate Supported 1.65 Gbit/sec
Mechanical
Dimensions (HxWxD) (mm) 1.65” x 6.38” x 2.83”
(42 mm x 162 mm x 72 mm)
Weight (kg) 0.9 lbs (0.41 kg)
Environmental
Operating Temperature 32° to 104° F (0° to 40° C)
Operating Humidity 10% to 85% non-condensing
Accessories Included
9VDC AC Power Adapter AC Power Adapter (9VDC) ,User Manual
XI. TROUBLESHOOTING
If the switcher does not appear to be functioning, make certain that all of the
DVI connections are securely attached to the unit with all appropriate screws in
tight. Secondly, verify the functioning of all DVI devices (sources and displays)
by connecting them with a short (6 ft. or less) DVI cable. If the signal is pres-
ent under those conditions, ensure that the connections are made fully and that
the power indicator light is clearly lit. Finally, make sure that the overall cable
distance does not exceed 15 meters (49 ft.) without proper signal management
(e.g. DVIGear DVI + HDCP Repeater).
Ifyourequirefurtherassistance,pleasecontactEmailusatsupport@dvigear.
com, or contact us by phone at 888-463-9927. For more information on our
products, please visit our website at http://www.dvigear.com.
DVI-4121 User GuideDVIGear - 7-

XII. RELATED PRODUCTS
DVI + HDCP 4x1 Switcher
The model DVI-4141 switcher allows for the connection
of up to four (4) DVI sources to a single display. Like the
model DVI-4121, this switcher uses state-of-the art digital
signal switching technology and come in a compact, rugged enclosure. The DVI-
4141 switcher is fully HDCP compliant and comes with a convenient miniature IR
Remote Control, which makes it extremely easy to use. Both models are ideal
for PC-based and HDTV display applications.
http://www2.dvigear.com/switchers.html
DVI + HDCP 1x2 Splitter and DVI + HDCP 1x4 Splitter
The DVI-5112 and DVI-5114 are high-performance, HDCP
compliant DVI Splitters that deliver superior performance
and reliability for a broad range of PC and HDTV applica-
tions.Designedtomeetthemostdemandinginstallationrequirements,these
units are housed in a rugged, yet extremely compact enclosure. Each unit is
compatible with the full spectrum of single-link DVI signals with pixel rates up to
165 MHz (1.65 GBit/sec.), which allows them to accept HDTV signals with resolu-
tions up to 1080p and PC resolutions up to 1920x1200 / 60Hz.
http://www2.dvigear.com/diam.html
DVI-D Super High Resolution Copper DVI cables
Use DVIGear’s DVI-D Super High Resolution Copper DVI cables
with your new DVI Switcher. These next generation Super High
Resolution (SHR) DVI-D cables are engineered for superior per-
formance and reliability. Designed for fully transparent operation
with single-link bit rates up to 1.65 Gbit/sec., DVIGear’s SHR
cables set a new benchmark for performance and durability.
http://www2.dvigear.com/cables.html
DVI-4121 User GuideDVIGear - 8-

Your Digital Connectivity Experts
1059 Triad Court
Suite 8
Marietta, GA 30062-2258
Toll Free: 888.463.9927
Phone: [phone]
Fax: [phone]
www.dvigear.com
DVI-4121-UG-01 / Sep.2008