Gefen 4x4 HDMI User manual

4x4 HDMI
Matrix
USER MANUAL
www.gefen.com

Technical Support:
Telephone [phone]
[phone]
Fax [phone]
Technical Support Hours:
8:00 AM to 5:00 PM Monday through Friday.
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.
The 4x4 HDMI Matrix is a trademark of Gefen Inc.
© 2007 Gefen Inc., All Rights Reserved
ASKING FOR ASSISTANCE

TABLE OF CONTENTS
1 Introduction / Operation Notes
2 Features
3 Panel Layout
4 Using the 4x4 HDMI Matrix
5 RMT16-IR Installation
6 Dip Switch Guidelines
7 IR Codes
8 RS-232 Interface
9 4x4 HDMI Matrix Rack Mount Diagram
10 Specifications
11 Terminology
12 Warranty

INTRODUCTION
Thank you for purchasing the 4x4 HDMI Matrix.
The 4x4 HDMI Matrix switches four HDTV sources to any four HDMI displays.
The 4x4 HDMI Matrix switcher has four HDMI inputs and four HDMI outputs. Matrix input
#1 and the HDMI port of HDTV source #1 connects using a male to male HDMI cable. The
HDMI port of HDTV source #2 connects to HDMI input #2. The HDMI port of HDTV source
#3 connects to HDMI input #3. The HDMI port of HDTV source #4 connects to HDMI input
#4. There are four (4) HDMI outputs connecting to four (4) different displays.
Note: The switching is done by using either the RMT-16-IR remote control or through the
RS232 port. The 4x4 HDMI Matrix is rack mountable. Any HDTV with DVI inputs can be
connected to the HDMI outputs of the matrix by using a DVI to HDMI adapter if the cable
used is DVI.
1
OPERATION NOTES
READ THESE NOTES BEFORE INSTALLING
OR OPERATING THE 4X4 HDMI MATRIX
• You should connect all the cables and power supply prior to connecting power to the
HDTV sources and 4x4 HDMI Matrix.
• When powering the sources, the display needs to point to the source input.
• The 4x4 HDMI Matrix is housed in a metal box for better RF shielding.
• The 4x4 HDMI Matrix works with all DVI and HDMI displays.
• The 4x4 HDMI Matrix supports both AUDIO and VIDEO signals.
• The 4x4 HDMI Matrix is fully HDCP compliant.

2
FEATURES
Features
• Allows any HDMI display to view any source at any time
• Allows any source to be displayed on multiple displays at the same time
• Maintains resolutions up to 1080p, 2K, and 1920x1200
• Maintains highest HDMI single link video resolution
• Maintains highest HDMI digital audio signal
• Supports HDCP compliant devices
• HDMI or DVI to HDMI cables are used to connect the inputs and the matrix output
• Each display's inputs can be switched with the IR remote control or through RS232
Includes:
(1) 4x4 HDMI Matrix
(4) HDMI 6 Cables (M-M)
(1) 24VDC Power Supply
(1) User Manual
(1) RMT-16IR Remote Control
(1) Rack Ears

PANEL LAYOUT
3
Display 1 LED
Indicator
Front Panel
RS232 Controller Port
Display 2 LED
Indicator Display 3 LED
Indicator Display 4 LED
Indicator
IR Sensor
IR Extender Eye Port Power Indicator
Back Panel
Connects to 24VDC
Power Supply
HDMI Inputs HDMI Outputs

Connect all the sources to the HDMI inputs on the 4x4 HDMI Matrix, using the
supplied cables.
Connect the HDMI/DVI displays to the outputs on the 4x4 HDMI Matrix.
Connect the 24VDC power supply to the 4x4 HDMI Matrix
Controlling the 4x4 HDMI Matrix using the RMT16-IR:
Pressing Buttons... Switches...
1-4 Display 1 to view Source 1, 2, 3, or 4
5-8 Display 2 to view Source 1, 2, 3, or 4
9-12 Display 3 to view Source 1, 2, 3, or 4
13-16 Display 4 to view Source 1, 2, 3, or 4
USING THE 4X4 HDMI MATRIX
1
2
3
4
4

5
RMT16-IR INSTALLATION
1. Remove battery cover from the back of the RMT16-IR remote.
2. Verify that dip switches 1 & 2 are in the down (OFF) position.
3. Insert the battery, hold the battery so that you can see the positive side facing up. The
side that is not marked must be facing down.
4. Test the RMT16-IR remote by pressing ONLY one button at a time. The indicator light
on the remote will flash once each time you press a button. WARNING: Do not press
multiple buttons simultaneously and do NOT press buttons rapidly. These actions will
cause the remote to reset and steps 1-4 will have to be repeated.
Note: The RMT16-IR ships with two batteries. One battery is required for operation, the
second battery is complimentary.

6
Why would I need to change the remote channel?
In some instances, the 4x4 Matrix for HDMI may use IR codes that conflict with other IR
remote control devices. The unit may switch inputs when another brand IR remote control is
used or the RMT16-IR may cause other brand IR controlled devices to behave unexpectedly.
I am experiencing the issues listed above. What do I do?
In these cases it is recommended to change the IR channel that the RMT16-IR remote control
and the 4x4 Matrix for HDMI use. The IR channel is configured independently on the RMT16-
IR remote control and the 4x4 Matrix for HDMI but the channel selection must match on both
units for proper operation.
How Do I change the Remote Channel?
There are service DIP switches on the RMT16-IR remote control and also inside the 4x4
Matrix for HDMI. Use the diagrams below to locate and change the IR channel to one that is
not the default. Remember that the channel must match on both the unit and remote control
for successful operation.
2 DIP switch bank for IR channel configuration.
4x4 Matrix for HDMI
RMT16-IR Remote Control
Remote Channel 1:
Default
Remote Channel 4:
Remote Channel 1:
Default
1 2
Remote Channel 2:
1 2
Remote Channel 3:
1 2
Remote Channel 4:
1 2
12345678
Remote Channel 3:
12345678
Remote Channel 2:
12345678
12345678
Remove the battery cover on the rear side of the RMT16-IR remote control
to expose the DIP switches.
The IR channel DIP switches for the 4x4 Matrix for HDMI are located on an 8 bank DIP switch inside of the unit
and on its main-board. To open the unit, remove all screws on the underside and side of the unit. Remove all HEX
screws on the rear panel. This includes the screws above each HDMI port and on each side of the RS-232 serial
communications port. Carefully slide the unit apart. Locate DIP switches 3 and 4. Once adjustments are complete
replace all screws and.
IR CODE CONFIGURATION

7
EDID MANAGEMENT FEATURE
EDID. What is it and what is it used for?
Under normal circumstances, an 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.
Why is EDID so important with the 4x4 Matrix for HDMI?
The 4x4 Matrix for HDMI is complex piece of technology that replicates and switches
between multiple inputs and outputs. Each connected source device will require one EDID
to read. EDID management is carefully handled by 4x4 Matrix for HDMI to provide a single
EDID for each source to read.
What options do I have to manage the EDID in the 4x4 Matrix for HDMI?
First, it is important to note that each source device can only output one video/audio signal
type. This includes resolutions and timings. When multiple devices/displays are used,
such as with the 4x4 Matrix for HDMI, it is important to use devices/displays that have
similar or compatible resolutions/features. This will ensure that the single video/audio
signal produced by the source device is accepted by all of the connected output devices/
displays.
The user has the option, through a combination of DIP switch settings within the 4x4
Matrix for HDMI, to choose how the unit will manage the EDID from multiple HDMI
devices/displays. Therefore the user has some control over the resolutions/features that
the source devices will output. The 4x4 Matrix for HDMI has a multiple EDID management
modes that will control how the EDID information from multiple devices/displays are
combined, ignored, and routed.
How do I change EDID modes in the 4x4 Matrix for HDMI?
There is an bank of 8 DIP switches located on the main-baord inside of the 4x4 Matrix for
HDMI. DIP switches 1, 2, 5, and 7 are used in different combinations to manage the EDID
modes.
TIP: EDID modes and IR code channels can also be managed via the RS-232 serial
communications port. For this to work, all DIP switches must be in the OFF position. This
is the factory default setting. If you wish to use this feature, please do not open the unit.
See page 9 and 10 for more information on the RS-232 serial communication features.
To access these DIP switches it will be required to open the unit. To do this, remove all
screws on the underside and side of the unit. Remove all HEX screws on the rear panel.
This includes the screws above each HDMI port and on each side of the RS-232 serial
communications port. Carefully slide the unit apart.

8
EDID MANAGEMENT MODES
EDID Modes
The diagram below illustrates the 8 DIP switch bank.
DIP SWITCH Function
1 EDID Mode
2 EDID Mode
3 IR Channel
4 IR Channel
5 EDID Mode
6 N/A
7 EDID Mode
8 N/A
Use DIP switches 1, 2, 5, and 7 to select the desired EDID management mode.
EDID Mode 0 (Switch 1=OFF Switch2=OFF Switch5=ON)
• EDID is copied from the device connected to the first active hdmi output port.
• All features newer that HDMI 1.2 are cleared.
EDID Mode 1 (Switch 1=ON Switch2=OFF Switch5=ON)
• Same as Mode 0 and adds basic audio support.
EDID Mode 2 (Switch 1=OFF Switch2=ON Switch5=ON)
• Same as Mode 0 and adds full audio support.
EDID Mode 3 (Switch 1=ON Switch2=ON Switch5=OFF)
• EDID is generated based on the common video and audio features of all of the
connected output devices.
EDID Mode 4 (Switch 1=OFF Switch2=ON Switch5=OFF)
• Same as Mode 3 and adds basic audio support.
EDID Mode 5 (Switch 1=ON Switch2=OFF Switch5=OFF)
• Same as Mode 3 and adds full audio support.
EDID Mode 6 (Switch 1=OFF Switch2=OFF Switch5=OFF) DEFAULT
• EDID is generated based on the common video features of all of the connected
devices and the combined audio features of all of the connected output devices.
EDID Mode 7 (Switch 1=ON Switch2=ON Switch5=ON)
• EDID is passed unmodified from the device connected to the first active output
port.
EDID Mode 8 (Switch 1=OFF Switch2=OFF Switch5=OFF Switch7=ON)
• Preloaded generic 1080p EDID is used.
EDID Mode A (Switch 1=OFF Switch2=ON Switch5=OFF Switch7=ON)
• Same as mode 6 but will record and store the EDID in memory. This EDID will
persist no matter what displays are disconnected or reconnected thereafter. EDID
will remain even upon power cycle. A user submitted EDID can be uploaded in
this mode using a Gefen HDMI Signal Generator.
12345678
v. 3019

9
RS-232 SERIAL COMMUNICATION
What features are available via the RS-232 serial communications port?
The 4x4 Matrix for HDMI can accept commands through the RS-232 serial
communications port located on the rear panel. The current RS-232 control features
are:
• Switching/routing of inputs to outputs without the RMT16-IR remote control.
• Switch EDID management modes without opening the unit to physically modify DIP
switches.
• Change IR code channel without opening the unit to physically modify DIP switches.
(The IR code channel will still need to be manually modified on the RMT16-IR
remote control to match the code channel.)
How do I use these features?
These features were initially intended for utilization by custom installers in automated
setups. However, these features can be tested by using any Windows PC with the
Hyperterminal program.
What pins are used for communication with the 4x4 Matrix for HDMI?
Only pins 2 (Receive), 3 (Transmit), and 5 (Ground) are used for communication. A null-
modem adapter should not be used with this product.
12345
6789
12345
6789
Only Pins 2 (RX), 3 (TX), and 5 (Ground) are used on the RS-232 serial interface
What are the communication port settings?
Bits per second ................................................................................................. 19200
Data bits .................................................................................................................... 8
Parity .................................................................................................................. None
Stop bits .....................................................................................................................1
Flow Control ....................................................................................................... None

10
RS-232 SERIAL COMMUNICATION COMMANDS
Switching/Routing Binary Table
ASCII RMT16-IR
Button Binary ASCII RMT16-IR Button Binary
1 1 0011 0001 9 9 0011 1001
2 2 0011 0010 a 10 0110 0001
3 3 0011 0011 b 11 0110 0010
4 4 0011 0100 c 12 0110 0011
5 5 0011 0101 d 13 0110 0100
6 6 0011 0110 e 14 0110 0101
7 7 0011 0111 f 15 0110 0110
8 8 0011 1000 g 16 0110 0111
EDID Management Modes
All DIP switches inside the unit must be in their default OFF position. Use theASCII
commands below to change the EDID modes. For a description of each mode please
see page 6.
ASCII EDID Mode
m0 0
m1 1
m2 2
m3 3
m4 4
m5 5
m6 6
m7 7
m8 8
mA A
IR Remote Channel Configuration
All DIP switches inside the unit must be in their default OFF position. Use theASCII
commands below to change the IR code channel. Please ensure that the IR remote
channel on the RMT-16IR matches any channel that is set by these commands. For a
description of the IR code channel configuration please see page 8.
ASCII Remote Channel
r1 1
r2 2
r3 3
r4 4

4x4 HDMI MATRIX RACK MOUNT DIAGRAM
11
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.
Rear of unit
Front of unit
1
2
3
4

Video Amplifier Bandwidth ................................................................................ 1.65 Gbps
Input Video Signal ......................................................................................... 1.2 volts p-p
Input DDC Signal .................................................................................... 5 volts p-p (TTL)
Single Link Range .............................................................................1080p / 1920 x 1200
HDMI Input/Output Connector ........................................................ Type A 19-pin Female
Remote Control Port ............................................................ RS-232 Female, Mini-Stereo
Power Consumption .................................................................................. 60 watts (max)
Power Supply ....................................................................................................... 24V DC
Dimensions ............................................................................ 17” W x 1.75” H x 5.875” D
Shipping Weight ..................................................................................................... 10 lbs.
SPECIFICATIONS
12

DDC
Short form for Display Data Channel. It is a VESA standard for communication between
a monitor and a video adapter. Using DDC, a monitor can inform the video card about its
properties, such as maximum resolution and color depth. The video card can then use this
informationto ensurethat theuseris presentedwith validoptions forconfiguringthe display.
DDWG
Digital Display Working Group DDWG are the creators of the DVI specification.
DVI
Digital Visual Interface. Connection standard developed by Intel for connecting computers
to digital monitors such as flat panels and DLP projectors.Aconsumer electronics version,
notnecessarily compatiblewiththe PCversion, isused asa connectionstandard forHDTV
tuners and displays. Transmits an uncompressed digital signal to the display. The latter
version uses HDCP copy protection to prevent unauthorized copying.
HDCP
High-Bandwidth Digital Content Protection. Created by Intel, HDCP is used with HDTV
signals over DVI and HDMI connections and on D-Theater D-VHS recordings to prevent
unauthorized duplication of copy written material.
HDMI
TheHigh-Definition Multi-mediaInterface (HDMI)is anindustry-supported, uncompressed,
all-digitalaudio/video interface.HDMI providesaninterfacebetweenany compatibledigital
audio/video source, such as a set-top box, DVD player, andA/V receiver and a compatible
digital audio and/or video monitor, such as a digital television (DTV).
HDTV
High-DefinitionTelevision.Thehigh-resolutionsubsetofourDTV system.TheATSCdefines
HDTVasa 16:9imagewith twicethehorizontal andverticalresolution ofourexistingsystem,
accompanied by 5.1 channels of Dolby Digital audio. The CEAdefines HDTV as an image
with 720 progressive or 1080 interlaced active (top to bottom) scan lines. 1280:720p and
1920:1080i are typically accepted as high-definition scan rates.
RS-232
RecommendedStandard 232.This isthe de factostandard forcommunication through PC
serial ports. It can refer to cables and ports that support the RS232 standard.
VESA
VideoElectronicStandardsAssociation,aconsortiumofmanufacturersformedtoestablish
andmaintain industrywide standardsfor videocards andmonitors. VESAwasinstrumental
in the introduction of the Super VGA and Extended VGA video graphics standards with a
refresh rate of 70 Hz, minimizing flicker and helping to reduce user eyestrain and fatigue.
TERMINOLOGY
13