Gefen TV Cables EXT HDMI 844 User Manual

®
8x4 Matrix for  
EXT-HDMI-844  
User Manual  
 
CONTENTS  
1
2
3
4
5
6
7
8
9
Introduction  
Operation Notes  
Features  
Panel Layout  
Panel Descriptions  
Connecting And Operating The 8X4 Matrix For HDMI  
LED Array  
RMT-16IR Remote Description  
IR Code Conguration  
10 EDID Management Feature  
11 EDID Management Modes  
12 RS-232 Serial Communications  
13 RS-232 Serial Communications Commands  
14 Specications  
15 Warranty  
 
INTRODUCTION  
Congratulations on your purchase of the 8x4 Matrix for HDMI. 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 8x4 Matrix for HDMI  
The rack-mountable 8x4 Matrix for HDMI sends high denition video and  
multichannel digital audio from any of 8 HDMI sources to any 4 Displays. The  
HDMI inputs consist of 4 High Denition video switches that can each accept 2  
video sources. This input scheme allows up to 8 sources to be available while  
viewing any 4 on the output displays concurrently.  
The 8x4 Matrix for HDMI eliminates the need to disconnect and reconnect  
sources to displays. It works with Blu-Ray players, Set-Top boxes, Home  
Theater PCs, and game consoles that connect to an HDMI display. Any source  
is accessible at all times by any display by selecting it using an IR remote or an  
RS-232 remote control device. The Matrix comes with rack ears for mounting in a  
shelving system.  
How It Works  
Up to 8 HDMI sources (4 viewable at any one time) connect to the Matrix’s inputs  
and up to four Displays connect to the Matrix’s outputs. Power up the 8x4 Matrix,  
HDMI sources and all connected Displays. Select which HDMI sources you want  
to view on each display using the IR remote. The result will be clear and vibrant  
HDMI video with multichannel digital audio at each Display.  
1
 
OPERATION NOTES  
READ THESE NOTES BEFORE INSTALLING OR  
OPERATING THE 8X4 MATRIX FOR HDMI  
Important Note: The 8x4 Matrix for HDMI incorporates a 2x1 switch in front  
of each input on a traditional 4x4 matrix. This allows for the connection of up  
to 8 different HDMI source devices with a maximum of 4 sources available  
for viewable at any one time. Each of the 4 switched inputs on the 8x4 Matrix  
for HDMI are labeled as “A” and “B”. Both “A” and “B” for each input cannot  
be active at the same time.  
Example A (Multiple outputs viewing the same input source)  
Devices: 1A (DVD player) & 1B (Cable STB)  
Scenario: Outputs 1 and 2 are both viewing input 1A (DVD).  
Action: User viewing output 1 switches the input from 1A (DVD) to 1B  
(STB).  
Result: Both outputs 1 and 2 will be switched to viewing 1B (STB).  
Example B (Multiple outputs viewing separate input sources)  
Devices: 1A (DVD player), 1B (Cable STB), and 2A (Video Game system)  
Scenario: Output 1 is viewing 1A and output 2 is viewing 2A.  
Action: User viewing output 1 switches the input from 1A (DVD) to 1B  
(STB).  
Result: Output 2 is not affected by the change of 1A to 1B because it is  
viewing a source (2A) on a different input.  
Display information (EDID) from the displays attached to the 8x4 Matrix for  
HDMI need to be sent back to the input sources. Please see page 10 for  
EDID management features and options.  
HDMI 1.2 compliant (HDMI 1.3 compatible)  
HDCP compliant  
2
 
FEATURES  
Features  
Switches any eight HDMI™ sources to 4 Displays  
Distributes any of the four switched inputs (total of eight inputs) to any  
combination of the four HDMI™ output displays  
Maintains high resolution video - beautiful, sharp HDTV resolutions up to  
1080p, 2k, and computer resolutions up to 1920 x 1200 are easily achieved  
Serial RS-232 remote port for switching via control automation  
HDMI™ 1.2 Compliant (HDMI 1.3 Compatible); HDCP Compliant  
Discrete IR remote (included)  
Rack ears included  
Package Includes  
(1) 8x4 HDMI Matrix  
(1) RMT-16IR Remote Control  
(8) 6-Foot HDMI Cable (M-M)  
(1) 24V DC Power Supply  
(1) User’s Manual  
(1) Rack Ears (set)  
3
 
PANEL LAYOUT  
Front Panel  
1
2
3
4
Back Panel  
5
6
7
8
9
10  
11  
4
 
PANEL DESCRIPTIONS  
1
Selected Input LED Indicator  
Each of the 4 outputs has an 4 LED array to indicate which source is currently  
selected on the 8x4 Matrix for HDMI. Each of the inputs can accept up to 2  
sources (A and B) and the LED array will behave in 2 modes to indicate which  
of the two sources for input is selected. Please see the operation section for a  
complete description on how the LED array functions.  
2
3
IR (Infrared) Receiver  
This receiver will accept command for switching between input HDMI devices  
using the included RMT-16IR remote control. Line of sight must be preserved for  
proper operation.  
IR (Infrared) Receiver Extension  
An optional IR Receiver Extension (part # EXT-RMT-EXTIR) can be connected if  
the unit is placed in a location that will not provide line of sight to the included IR  
remote control. The IR extension can then be placed in a location where it can  
receive commands form the IR remote control.  
4
5
Power LED Indicator  
This LED will become active once the included 24V DC power supply is properly  
connected between the unit and an open wall power socket.  
RS-232 Serial Communications Port  
This port is used to control multiple functions available on the 8x4 Matrix for  
HDMI. Please see page 12 for complete details on the serial communication  
features that are used on this product.  
6
7
8
9
HDMI 1 Inputs  
There are two inputs, labeled 1A and 1B, that will accept an HDMI source  
device. Only one of these inputs can be active at any given time.  
HDMI 2 Inputs  
There are two inputs, labeled 2A and 2B, that will accept an HDMI source  
device. Only one of these inputs can be active at any given time.  
HDMI 3 Inputs  
There are two inputs, labeled 3A and 3B, that will accept an HDMI source  
device. Only one of these inputs can be active at any given time.  
HDMI 4 Inputs  
There are two inputs, labeled 4A and 4B, that will accept an HDMI source  
device. Only one of these inputs can be active at any given time.  
10 HDMI Outputs 1 to 4  
Connect up to 4 HDMI capable devices (i.e. display) to these output ports.  
11 24V DC Power Receptacle  
Connect the included 24V DC power supply between this input and an open  
wall power socket.  
5
 
CONNECTING AND OPERATING THE 8X4 MATRIX FOR HDMI  
How to Connect the 8x4 Matrix for HDMI  
1. Connect up to 8 HDMI source devices to the 8x4 Matrix for HDMI using the  
included HDMI cables.  
NOTE: Please be aware that each input has two available HDMI ports and that  
only one will be active at any given time. It is recommended that commonly used  
HDMI sources be put on separate inputs (i.e. 1A and 2A, not 1A and 1B) so that  
these devices are always available.  
2. Connect up to 4 HDMI capable devices (i.e. displays) to the 8x4 Matrix for  
HDMI using user supplied HDMI cables.  
3. Connect the included 24V DC power supply between the power input on the  
unit and an open wall power socket.  
4. Power on all output devices rst and the source devices second.  
How to Operate the 8x4 Matrix for HDMI  
The 8x4 Matrix for HDMI can be controlled by either the included RMT16-IR  
remote control or the RS-232 serial communications port.  
For RMT-16IR remote control functions please see page 8.  
For RS-232 serial communication functions please see page 12.  
6
 
LED ARRAY  
The LED array on the 8x4 Matrix for HDMI is designed to inform the user of the  
current source to output routes. Each output has a 4 LED array that will indicate  
which source is currently selected. Each input can accept two sources and  
therefore the LED array will act differently according to which input, “A” or “B”, is  
active for each.  
An input’s “A” source will be indicated by an single LED (the selected “A”  
input) that is ON.  
An input’s “B” source will be indicated by the reverse; a single LED will be  
OFF (the selected “B” input) while the remaining 3 LEDs will be ON.  
The examples below will show some scenarios to illustrate the LED array  
functionality. Please note that it is not possible to have both “A” and “B” inputs  
active at the same time for any given input.  
= LED ON  
= LED OFF  
Scenario 1 (”A” Example)  
Output-1  
Output-2  
Output-3  
Output-4  
Output 1 is selected to 1A  
Output 2 is selected to 2A  
Output 3 is selected to 3A  
Output 4 is selected to 4A  
Scenario 2 (”B” Example)  
Output-1  
Output-2  
Output-3  
Output-4  
Output 1 is selected to 1B  
Output 2 is selected to 2B  
Output 3 is selected to 3B  
Output 4 is selected to 4B  
Scenario 3 (Mixed Example)  
Output-1  
Output-2  
Output-3  
Output-4  
Output 1 is selected to 3A  
Output 2 is selected to 4B  
Output 3 is selected to 2A  
Output 4 is selected to 1A  
7
 
RMT-16IR REMOTE DESCRIPTION  
The RMT-16IR remote control will allow the user to select which source will be routed  
to which output. Each of the 4 outputs are assigned a group of 4 buttons that will  
correspond to the 4 source inputs. Each button on the RMT-16IR remote control will  
toggle between the “A” and “B” sources for each input. Please use the information  
below when selecting the desired source for each display.  
RMT-16IR Button  
Source  
Display  
1
2
Toggle 1A and 1B  
Toggle 2A and 2B  
Toggle 3A and 3B  
Toggle 4A and 4B  
Toggle 1A and 1B  
Toggle 2A and 2B  
Toggle 3A and 3B  
Toggle 4A and 4B  
Toggle 1A and 1B  
Toggle 2A and 2B  
Toggle 3A and 3B  
Toggle 4A and 4B  
Toggle 1A and 1B  
Toggle 2A and 2B  
Toggle 3A and 3B  
Toggle 4A and 4B  
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
8
 
IR CODE CONFIGURATION  
Why would I need to change the remote channel?  
In some instances, the 8x4 Matrix for HDMI may use IR codes that conict with other  
IR remote control devices. The unit may switch inputs when another brand IR remote  
control is used or the RMT-16IR 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 RMT-16IR  
remote control and the 8x4 Matrix for HDMI use. The IR channel is congured  
independently on the RMT-16IR remote control and the 8x4 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 RMT-16IR remote control and also inside the  
8x4 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.  
RMT-16IR Remote Control  
Remove the battery cover on the rear side of the RMT-16IR remote control  
to expose the DIP switches.  
2 DIP switch bank for IR channel conguration.  
Remote Channel 1:  
Default  
Remote Channel 2:  
Remote Channel 4:  
1
2
1
1
2
2
Remote Channel 3:  
1
2
8x4 Matrix for HDMI  
The IR channel DIP switches for the 8x4 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.  
Remote Channel 1:  
Remote Channel 2:  
Default  
1 2 3 4 5 6 7 8  
1 2 3 4 5 6 7 8  
1 2 3 4 5 6 7 8  
Remote Channel 3:  
Remote Channel 4:  
1 2 3 4 5 6 7 8  
9
 
EDID MANAGEMENT FEATURE  
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.  
Why is EDID so important with the 8x4 Matrix for HDMI?  
The 8x4 Matrix 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 8x4 Matrix for  
HDMI to provide a single EDID for each source to read.  
What options do I have to manage the EDID in the 8x4 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 8x4 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 8x4 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 8x4 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 8x4 Matrix for HDMI?  
There is an bank of 8 DIP switches located on the main-baord inside of the 8x4  
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 12 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.  
10  
 
EDID MANAGEMENT MODES  
v. 3019  
EDID Modes  
The diagram below illustrates the 8 DIP switch bank.  
DIP SWITCH  
Function  
1
2
3
4
5
6
7
8
EDID Mode  
EDID Mode  
IR Channel  
IR Channel  
EDID Mode  
N/A  
1
3
5
7
2
4
6
8
EDID Mode  
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 rst 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 unmodied from the device connected to the rst 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.  
11  
 
RS-232 SERIAL COMMUNICATIONS  
What features are available via the RS-232 serial communications port?  
The 8x4 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 RMT-16IR 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 modied on the  
RMT-16IR 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 8x4 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.  
1 2 3 4 5  
1 2 3 4 5  
6 7 8 9  
6 7 8 9  
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  
12  
 
RS-232 SERIAL COMMUNICATIONS COMMANDS  
Switching/Routing Binary Table  
ASCII  
Command  
ASCII  
Command  
Input  
Output  
Input  
Output  
A1/a1  
A2/a2  
A3/a3  
A4/a4  
A5/a5  
A6/a6  
A7/a7  
A8/a8  
B1/b1  
B2/b2  
B3/b3  
B4/b4  
B5/b5  
B6/b6  
B7/b7  
B8/b8  
1A  
1B  
2A  
2B  
3A  
3B  
4A  
4B  
1A  
1B  
2A  
2B  
3A  
3B  
4A  
4B  
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
C1/c1  
C2/c2  
C3/c3  
C4/c4  
C5/c5  
C6/c6  
C7/c7  
C8/c8  
D1/d1  
D2/d2  
D3/d3  
D4/d4  
D5/d5  
D6/d6  
D7/d7  
D8/d8  
1A  
1B  
2A  
2B  
3A  
3B  
4A  
4B  
1A  
1B  
2A  
2B  
3A  
3B  
4A  
4B  
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
EDID Management Modes  
Use the ASCII commands below to change the EDID modes. For a description of  
each mode please see page10.  
ASCII  
m0  
EDID Mode  
ASCII  
m5  
EDID Mode  
0
1
2
3
4
5
6
7
8
A
m1  
m6  
m2  
m7  
m3  
m8  
m4  
mA  
IR Remote Channel Conguration  
All DIP switches inside the unit must be in their default OFF position. Use the ASCII  
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 conguration please see page 9.  
ASCII  
r1  
Remote Channel  
1
2
3
4
r2  
r3  
r4  
13  
 
SPECIFICATIONS  
Video Amplier 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  
HDMI Connector ................................................................. Type A 19 Pin Female  
RemoteControlPort..........................................RS-232Female,3.5mmMini-Stereo  
Power Supply ............................................................................................ 24V DC  
Power Consumption ....................................................................... 60 Watts (max)  
Dimensions .................................................................. 17.1”W x 1.7”H x 6.5”D  
Shipping Weight .......................................................................................... 9 lbs.  
14  
 
WARRANTY  
Gefen warrants the equipment it manufactures to be free from defects in material  
and workmanship.  
If equipment fails because of such defects and Gefen is notied within two (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 modications. 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.  
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.  
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, 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 features and  
specications is subject to change without notice.  
For the latest warranty coverage information, please visit Gefen’s Warranty web  
PRODUCT REGISTRATION  
Please register your product online by visiting Gefen’s web site at  
15  
 
 
 
Rev A2  
20600 Nordhoff St., Chatsworth CA 91311  
1-800-545-6900 818-772-9100 fax: 818-772-9120  
www.gefen.com support@gefen.com  
 

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