Gefen EXT-HDMI-2-DVIAUD User manual

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Notice
Gefen LLC. reserves the right to make changes in the hardware, packaging and
any accompanying documentation without prior written notice.
HDMI to DVI Audio Adapter is a trademark of Gefen LLC.
© 2011 Gefen LLC, All Rights Reserved.
All trademarks are the property of their respective companies.
ASKING FOR ASSISTANCE

1 Introduction
2 Operation Notes
3 Features / Package Includes
4 Panel Layout
5 Panel Descriptions
6 Connecting and Operating the HDMI to DVI Audio Adapter
7 EDID Guide
8 DIP Switch Guide
9 Specifications
10 Warranty
CONTENTSCONTENTSCONTENTS

1
INTRODUCTION
CongratulationsonyourpurchaseoftheHDMItoDVIAudioAdapter.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 HDMI to DVI Audio Adapter
The HDMI to DVI Audio Adapter is a unique device that converts the HDMI signal
to a digital video DVI (DVI-D) output and a digital audio TOSLINK output. This
adapter lets you connect your HDMI source to a DVI HDCP display and enjoy high
quality digital audio at the same time. With the HDMI to DVI Audio Adapter, home
theater devices and computer systems can easily be connected to any DVI display
for the full digital video and audio experience.
How It Works
Simply connect your DVI compliant monitor to the DVI Female connector on the
output side of the HDMI to DVI Audio Adapter. Then connect the supplied HDMI
cable from your source to the input side of the HDMI to DVI Audio Adapter. Then
connect the TOSLINK digital audio cable between the audio output on the HDMI
to DVIAudio Adapter and the Audio input on your device. Then connect the power
supply.
Note: When the HDMI input is HDCP encrypted the DVI output is encrypted as
well.

READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE HDMI TO DVI AUDIO ADAPTER
TheHDMIsourcedeviceneedsan EDID(displayinformation)tooperatecorrectly.By
default,the HDMI toDVIAudioAdapterwill use theEDID from the deviceconnected
tothe DVIoutput. Ifthe outputdevice isa DVItype device,audio informationwill not
be included in its EDID and audio may not be output by the attached HDMI device.
To resolve this issue, the HDMI to DVI Audio Adapter carries preset EDID’s that
include audio flags for use by the source device. For a listing of the EDID modes
and how to utilize them, please see page 8.
OPERATION NOTES
2

3
FEATURES
Features
• Allows you to connect HDMI outputs to TOSLINK and a DVI display
• Decodes digital audio and video signal from HDMI™ video and audio
• Supports resolutions up to 1080p, 2K, and 1920 x 1200
• Built in EDID selection for audio support
• HDCP pass-through
Package Includes
(1) HDMI to DVI Audio Adapter
(1) 5V Power Supply
(1) 6 ft. HDMI Cable
(1) User Manual

4
PANEL LAYOUT
Front Panel
Back Panel
1
345
2

5
PANEL DESCRIPTIONS
1 DVI Output Connector
This output will accept a single DVI output device via a DVI-D type connector.
The video portion of the HDMI signal will be separated from the audio portion and
output through this connector.
2 TOSLINK Digital Audio Output Connector
This output will accept a single TOSLINK (optical) digital audio device via
a TOSLINK female connector. The audio portion of the HDMI signal will be
separated from the video portion and output through this connector.
3 5V DC Power Receptacle
Connect the included locking 5V DC power supply between this port and an open
wall power socket.
4 Power LED Indicator
This LED will become active once a valid connection is made between the
included 5V DC power supply and an open wall power socket.
5 HDMI Input Connector
This input will accept a single HDMI input source device via a HDMI Type A
female connector.

6
CONNECTING AND OPERATING THE HDMI TO DVI AUDIO ADAPTER
How to Connect the HDMI to DVI Audio Adapter
1. Connect the HDMI source device to the HDMI input on the HDMI to DVIAudio
Adapter using the supplied HDMI cable.
2. Connect the DVI capable output device to the DVI output on the HDMI to DVI
Audio Adapter using a user supplied DVI cable.
3. Connect a TOSLINK capable audio output device to the TOSLINK output on
the HDMI to DVI Audio Adapter using a user supplied TOSLINK cable.
NOTE: By default, the HDMI to DVI Audio Adapter will use the EDID from the
DVI device connected to the output. In most cases a DVI EDID will not carry any
audio information, and in most cases the HDMI source device will require audio
information in the EDID it reads to set the right audio output format and type. To
compensate for this eventuality, the HDMI to DVI Audio Adapter carries preset
EDID’s that contain specific audio flags.To enable a preset EDID, please see page
7. The preset EDID must be set before proceeding to the next step.
4. Connect the included 5V DC power supply to the HDMI to DVI Audio Adapter
and an open wall power socket.
How to Operate the HDMI to DVI Audio Adapter
No further configuration is required to operate the HDMI to DVI Audio Adapter. If,
however, the audio format needs to be changed, please refer to the next section
on instructions on how to change preset EDID modes.

7
EDID GUIDE
EDID. What is it and what is it used for?
Under normal circumstances, a source device (digital and analog) will require
information about a connected device/display to assess what resolutions and
features are available. The source can then cater its output to send only resolutions
and features that are compatible with the attached device/display. This information
is called EDID (Extended Display Information Data) and a source device can only
accept and read one EDID from a connected device/display. Likewise, the source
an only output one resolution for use by a connected device/display. EDID will also
specify specific audio capabilities as well, such as supported audio formats and
speaker allocation.
Why is EDID so important with the HDMI to DVI Audio Adapter?
The HDMI to DVI Audio Adapter will separate the video and audio stream in an
HDMI signal to allow separate routing of each signal type. The connected HDMI
source device will require one EDID to read. By default, the EDID used is from the
connected DVI output device. In most cases, a DVI EDID will not carry the required
audio information that the HDMI source needs to ascertain what type of audio will
be output.
What options do I have to manage the EDID in the HDMI to DVI Audio
Adapter?
The HDMI to DVI Audio Adapter has the ability to use preset EDID’s that contain
audio information. These EDID’s can then be used by the HDMI source device to
adjust its audio output to match. These EDID modes can be set using the 4 DIP
switch bank located on the underside of the HDMI to DVI Audio Adapter.
How do I change EDID modes in the HDMI to DVI Audio Adapter?
There is an bank of 4 DIP switches located on the underside of the HDMI to DVI
Audio Adapter. This bank is covered by a piece of metallic tape. Removing this
piece of tape will expose the DIP switch bank.
Use a small pointed tool to adjust the DIP switches according to the chart on the
next page. Changes should be made without the application of power. Once a
change is made, power can be reapplied. The source device may also need to
have it’s power cycled to register the new EDID.

8
USING PRE-PROGRAMMED EDID
Some situations require forcing EDID (display and audio capability data) for
troubleshooting purposes. The goal is to provide settings that the source device will
understand, resolving cases where the data is indeterminate or wrong due to an
interfacing issue and the source does not know what signal to output to the display.
Underneath the unit, a bank of 4 switches (called DIP switches) allows you to set
EDID parameters. Look on the underside of the unit and carefully peel off a grey
silver sticker revealing the bank of 4 DIP switches. You are now ready to make
adjustments. Please refer to the chart below.
FORCING RGB COLORSPACE
Sometimes output video may have a pink or green tint. This is usually due to lack
of colorspace support by an output device. All digital displays handle the standard
RGB colorspace. DIP switch 2 can be set to force the output colorspace to RGB.
If the input colorspace is YCbCr, the colorspace will be converted to RBG prior to
output. The following table shows the DIP switch settings that are possible:
Switches [4:1] / Video Audio
All Dip Sw. off (factory default) EDID audio, video, and speaker configurations
are identical to display's EDID.
Switch 1 on, 1080i native
EDID Audio format: LPCM, max number of channels: 8
Sampling rates 32, 44.1, and 48 KHz.
24, 20, and 16 bits/sample.
Switch 2 on, 1080i native
EDID Audio format: LPCM, 2 channels maximum.
Sampling rates 32, 44.1, and 48 KHz.
24, 20, and 16 bits/sample.
Switch 3 on, 1080p native
EDID Audio format: none.
Switch 4 on, force RGB EDID A/V follows display’s EDID. Color space is
forced to RGB on the output.
Resolution Timing
640x480 60Hz
720x480i/p 59.94/60Hz
720x576i/p 50Hz
1280x720p 50Hz
1280x720p 59.94/60Hz
1920x1080i/p 50Hz
1920x1080i/p 59.94/60Hz
Setting DIP switch 2 to ON forces 1080i native
EDID with 2-channel LPCM audio:
Setting DIP switch 4 to ON forces RGB Color
Space regardless of the Display’s EDID settings.

9
SPECIFICATIONS
Maximum Pixel Clock..................................................... 165 MHz (HDMI and DVI)
HDMI Input Connector.......................................................(1) Type A 19 pin female
DVI Output Connector......................................................... (1) DVI-I 29 pin female
Audio Output Connector........................................................(1) Optical (TOSLINK)
Power Supply................................................................................................ 5V DC
Power Consumption...........................................................................5 Watts (max)
Dimensions..............................................................................3.2”D x 3.4” W x 1”H
Shipping Weight..............................................................................................2 lbs.

10
WARRANTY
Gefen warrants the equipment it manufactures to be free from defects in material
and workmanship.
Ifequipment fails because of suchdefects andGefen isnotified withintwo (2) years
from the date of shipment, Gefen will, at its option, repair or replace the equipment,
provided that the equipment has not been subjected to mechanical, electrical, or
other abuse or modifications. 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 repair. Such repairs are warranted for ninety (90) days from the day of
reshipment to the Buyer.
Thiswarranty isin lieu ofall otherwarranties expressedorimplied, includingwithout
limitation, any implied warranty or merchantability or fitness for any particular
purpose, all of which are expressly disclaimed.
1. Proof of sale may be required in order to claim warranty.
2. Customers outside the US are responsible for shipping charges to and from
Gefen.
3. Copper cables are limited to a 30 day warranty and cables must be in their
original condition.
The information in this manual has been carefully checked and is believed to be
accurate. However, Gefen assumes no responsibility for any inaccuracies that may
be contained in this manual. In no event will Gefen be liable for direct, indirect,
special,incidental, orconsequential damagesresulting fromany defector omission
in this manual, even if advised of the possibility of such damages. The technical
information contained herein regarding the features and specifications is subject
to change without notice.
For the latest warranty coverage information, please visit Gefen’s Warranty web
page at http://www.gefen.com/kvm/aboutus/warranty.jsp
PRODUCT REGISTRATION
Please register your product online by visiting Gefen’s web site at
http://www.gefen.com/kvm/Registry/Registration.jsp

Pb
*MA-HDMI-2-DVIAUD*
This product uses UL listed power supplies.