Gefen GEF-DVI-848DL-PB User manual

8x8 DVI Dual Link Matrix
with Push Button Controls
GEF-DVI-848DL-PB
User Manual
www.gefenpro.com

ASKING FOR ASSISTANCE
Rev A2
Technical Support:
Telephone [phone]
[phone]
Fax [phone]
Technical Support Hours:
8:00 AM - 5:00 PM Monday - Friday, Pacific Time
For 24 / 7 support, see the back of the product for the support number
Write To:
Gefen LLC
c/o Customer Service
20600 Nordhoff St
Chatsworth, CA 91311
www.gefenpro.com
[email protected]
Notice
Gefen LLC reserves the right to make changes in the hardware, packaging and
any accompanying documentation without prior written notice.
8x8 DVI Dual Link Matrix with Push Button Controls
is a trademark of Gefen LLC
© 2010 Gefen LLC, All Rights Reserved
All trademarks are the property of their respective owners

CONTENTS
1 Introduction
2 Operation Notes
3 Features
4 Front Panel Layout
5 Front Panel Descriptions
6 Back Panel Layout
7 Back Panel Descriptions
8 Connecting The 8x8 DVI Dual Link Matrix
8 Wiring Diagram
9 Front Panel Display
10 IR Remote Control Unit Layout
11 IR Remote Control Unit Installation
12 IR Remote Control Unit Configuration
13 Using the IR Remote Control Unit
14 Operating The 8x8 DVI Dual Link Matrix
14 Routing Sources
15 System Lock Mode
16 Cycling between Information Screens
17 Activating / Deactivating Standby Mode
17 Saving the Downstream EDID to Local Memory
19 Saving the Default EDID to Local Memory
20 Saving the current Routing State
21 Recalling a Routing State
22 Masking Outputs
23 RS-232 Serial Control
24 EDID Management
29 IP Configuration
33 General Functions
36 Commands
38 IP Control
38 View Matrix Status
39 Manage EDID
40 Set to Default EDID
41 Copy EDID
42 Lock EDID
43 Masking
44 IP Configuration
45 Backup / Restore
46 Network Cable Wiring Diagram
47 Firmware Update
48 Rack Mount Safety Information
49 Glossary
56 Specifications
57 Warranty
58 Licensing

1
INTRODUCTION
Congratulations on your purchase of the GefenPRO 8x8 DVI Dual Link Matrix
with Push Button Controls with Push Button Controls. Your complete satisfaction
is very important to us.
GefenPRO
In the realm of video distribution, certain features are invaluable in a commercial
or broadcast environment. Accommodations such as a build-in power supply
and flat black rack-mount enclosures set GefenPRO apart from our traditional
products. Complex distribution units allow for professional DVI, 3G-SDI, and
HDMI signals to be routed and converted easily and seamlessly, while being
backed up by a renowned and dependable technical support team. Gefen invites
you to explore the GefenPRO product line and hopes that you find the solution
that fits your needs.
The GefenPRO 8x8 DVI Dual Link Matrix with Push Button Controls
The GefenPRO 8x8 DVI Dual Link Matrix with Push Button Controls provides
a professional-grade solution to route up to eight DVI sources to any eight DVI
displays. Dual link resolutions up to 3840x2400 are supported. The front panel
display shows the current routing status and the front panel push buttons are
used to manage local source routing. Four methods are available for controlling
the GefenPRO 8x8 DVI Dual Link Matrix: front panel push buttons, IR remote,
RS-232 interface, or using IP control with the built-in Web interface.
How It Works
Connect up to eight DVI source devices to the GefenPRO 8x8 DVI Dual Link
Matrix with Push Button Controls using the supplied DVI cables. Connect up to
eight monitors to the DVI outputs. Plug in the power cord and apply power to the
Matrix. The DVI sources will be routed according to the current routing selection.
NOTE: The GefenPRO 8x8 DVI Dual Link Matrix with Push Button Controls only
supports DVI-D.

OPERATION NOTES
2
READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE GEFENPRO 8X8 DVI DUAL LINK MATRIX WITH
PUSH BUTTON CONTROLS
• The 8x8 DVI Dual Link Matrix with Push Button Controls does not support
HDCP content.
• When the Matrix is used for the first time, make sure that a DVI monitor is
powered and connected to one of the DVI outputs on the 8x8 DVI Dual Link
Matrix with Push Button Controls before applying power. By default, the
Local EDID is read from the connected monitor and is copied to all 8 DVI
inputs once the Matrix has been turned on. If a monitor is not detected by
the Matrix at power-on, a default (internal) EDID of 640x480 will be used.
This functionality can be disabled using the Secure Local EDID function
through RS-232 control. See page 27 for more information.
• There is no internal scaling in the 8x8 DVI Dual Link Matrix with Push Button
Controls. Each monitor attached to the Matrix must be able to display the
resolutions output by the source device(s). For maximum compatibility it is
recommended that only one common resolution be used by each source
device.
• Advanced EDID features are accessible through the RS-232 serial command
set or using IP Control.
• IMPORTANT: If the unit is installed in a closed or multi-rack assembly, do
not block the ventilation holes of the enclosure.

3
FEATURES
Features
• Increases productivity
• Supports resolutions up to 1920x1200 (Single Link) and 3840x2400 (Dual
Link)
• Front panel control buttons for local switching
• Serial RS-232 interface for remote control via a computer or control
automation devices
• IP Control
• Discrete IR remote control switching
• Advanced EDID management permits upload of custom internal or external
EDID settings
• Supports DDWG standards for DVI
• Built-in power supply
• Output masking command
• Standby mode
• Grounding pin
• IR Sensor
• IR Extender
• Status LCD (shows routing status)
• Firmware upgrade via RS-232
• Power On/Off switch
• Rack-mountable
Package Includes
(1) GefenPRO 8x8 DVI Dual Link Matrix with Push Button Controls with Push
Button Controls
(8) 6 ft. DVI Dual Link cables (M-M)
(1) IR Remote Control Unit
(1) AC Power Cord
(1) User Manual

4
PANEL LAYOUT
Front Panel
4 5 61
7
2
8
3
9 10 11 12

5
PANEL DESCRIPTIONS
Front Panel
1 Cancel
This button is used to cancel a routing change in progress.
2 EDID
This button is used to manage EDID functions. See pages 17 - 19 for details.
3 Set
This button is used to store and recall EDID and routing functions. See pages
14 - 22 for details.
4 Out (1 - 8)
These buttons are used to select the output when routing a source.
5 Power
This LED will glow bright red when the AC power cord is connected to an
available electrical outlet.
6 LCD Display
Displays the current routing status of the Matrix and is also used to manage
source routing.
7 Lock
This button enables / disables the locking of the front panel buttons, preventing
accidental changes.
8 Preset
The Preset button is used to select or recall stored preset routing states.
9 Mask
This button is used to mask (disable / enable) displays from receiving a video
signal from the Matrix.
10 In (1 - 8)
These buttons are used to select the input when routing to a display.
11 IR Window
Receives signals from the IR Remote Control unit.
12 Power Switch
Powers the Matrix ON or OFF.

6
PANEL LAYOUT
Back Panel
7
8
1 3
6
5
42

7
PANEL DESCRIPTIONS
Back Panel
1 110 / 220 V AC (50 / 60 Hz) Power Receptacle
Connect the included AC power cord from this receptacle to an available
electrical outlet.
2Fuse Drawer
Each power receptacle houses a fuse drawer. Within each fuse drawer are two
(2) 250 V fuses. One fuse is active and the other is a spare.
3 DVI Input Ports (1 - 8)
Connect DVI source devices to these ports.
4 Grounding Terminal
Provides a discharge path to ground in case a short circuit occurs between the
“hot” lead of the power supply and the enclosure of the Matrix. The grounding
wire should be attached from the grounding terminal to an approved ground
path.
5 IP Control Interface
Connect to this port to control the 8x8 DVI Dual Link Matrix with Push Button
Controls using IP Control. See page 38 for details.
6 IR Extender Port
Connect an IR extender cable to this port (Gefen part no. EXT-RMT-EXTIR).
7 DVI Output Ports 1-8
Connect DVI monitors to these ports.
8 RS-232 Serial Port
Connects to the RS-232 control device. The 8x8 DVI Dual Link Matrix with Push
Button Controls may be switched remotely using this port. See page 36 for more
information.

8
CONNECTING AND OPERATING THE
8X8 DVI DUAL LINK MATRIX WITH PUSH BUTTON CONTROLS
How to Connect the 8x8 DVI Dual Link Matrix with Push Button Controls
1. Connect up to 8 DVI Dual Link source devices to the inputs on the rear panel
of the 8x8 DVI Dual Link Matrix with Push Button Controls using the supplied
DVI dual link cables.
2. Connect up to 8 DVI Dual Link monitors to the outputs on the rear panel of
the 8x8 DVI Dual Link Matrix with Push Button Controls with user-supplied
DVI dual link cables.
3. Connect the included AC power cable to the power receptacle on the rear
panel of the 8x8 DVI Dual Link Matrix with Push Button Controls and connect
the opposite end of the power cable into an available electrical outlet.
How to Operate the 8x8 DVI Dual Link Matrix with Push Button Controls
The 8x8 DVI Dual Link Matrix with Push Button Controls offers a number of
control options. The following methods can be used to control basic routing
functions:
1. Front Panel Control Buttons - Page 14
2. IR Remote Control - Page 13
3. RS-232 Serial Control - Pages 23 - 37
4. IP Contol - Pages 38 - 45
Wiring Diagram for the GefenPRO 8x8 DVI Dual Link Matrix with Push
Button Controls
Attention: This product should always be connected to a grounded
electrical socket.
GEF-DVI-848DL-PB
DVI Dual Link Displays
DVI DUAL LINK CABLE
8x
DVI Dual Link Sources
8x
Matrix
RS-232 Controller
RS-232 CABLE
ETHERNET CABLE
Computer
(IP Control)

9
FRONT PANEL DISPLAY
Main Display
The Main Display of the GefenPRO 8x8 DVI Dual Link Matrix is a 16 character
2 line display. This display will show the standby screen and will also be used to
aid in performing routing commands. When the unit is powered on, the following
screen is displayed:
After a few moments, the Standby Screen is displayed. The Standby Screen is
shown below:
Displaying Additional Information
Pressing the Cancel button, consecutively, will cycle through screens displaying
the firmware version and boot loader version, IP address, MAC address, and the
IR remote channel:

10
IR REMOTE DESCRIPTION
1 Activity Indicator
This LED will be activated momentarily each time a button is pressed.
2 Monitor and Source Selection Buttons
These buttons are used to select which source is routed to a monitor.
See page 13 for information on using the IR Remote Control unit.
RMT-16IR
Remote Control Unit
1
2

11
IR REMOTE INSTALLATION
Installing the Battery
1. Remove the battery cover on the back of the IR Remote Control unit.
2. Insert the included battery into the open battery slot. The positive (+) side of
the battery should be facing up.
3. Replace the battery cover.
The Remote Control unit ships with two batteries. One battery is required for
operation and the other battery is a spare.
CAUTION: Risk of explosion if battery is replaced by an incorrect type.
Dispose of used batteries according to the instructions.
O
N:
Risk o
f
e
xp
los
e
o
f
used batteries
Empty Battery Slot

12
IR REMOTE CONFIGURATION
How to Resolve IR Code Conflicts
In the event that IR commands from other remote controls interfere with the
supplied IR Remote Control unit, changing the IR channel on the IR Remote
Control unit will fix the problem. The IR Remote Control unit has a bank of DIP
switches used for setting the IR channel.
The DIP switch bank is located underneath the battery cover.
1 2
1 21 2
1 2
Remote Channel 2:
Remote Channel 0:
Default
Remote Channel 1:
Remote Channel 3:
Exposed DIP Switch
bank between the
battery chambers.
It is important that the IR channel on the Remote Control unit, matches the IR
channel set on the 8x8 DVI Dual Link Matrix. For example, if both DIP switches
on the IR Remote Control unit are set to IR channel 0 (both DIP switches down),
then the 8x8 DVI Dual Link Matrix must also be set to IR channel 0. See page 35
on how to change the IR channel on the 8x8 DVI Dual Link Matrix.

13
USING THE IR REMOTE CONTROL UNIT
IR Remote Control Key Mapping
Each input and output on the 8x8 DVI Dual Link Matrix with Push Button Controls
is represented by a button on the IR Remote Control unit. The table below lists the
corresponding inputs and outputs.
Remote Button Monitor / Source
11
22
33
44
55
66
77
88
Routing Sources using the IR Remote Control unit
Issuing a routing command is a two step process. The first step is to select the
monitor where the source will be routed. The second step is to select the source.
Example 1
Route the source device connected to In 7 to the monitor connected to Out 3.
1. Press button 3 (monitor 3) on the IR remote control unit.
2. Press button 7 (source 7) on the IR remote control unit.
The source connected to In 7 will be routed to the monitor connected to Out 3.
Example 2
Route the source device connected to In 1 to the monitor connected to Out 1.
1. Press button 1 (monitor 1) on the IR remote control unit.
2. Press button 1 (source 1) on the IR remote control unit.
The source connected to In 1 will be routed to the monitor connected to Out 1.

14
OPERATING THE 8X8 DVI DUAL LINK MATRIX
Routing Sources
In order to change current routing state:
1 Press Set Button to activate Routing Mode.
2 Press any Input on the bottom row of buttons (1 - 8). The system indicates
the current routing status.
3 Press the desired Output button. One or more Output buttons may be
selected.
4 Press the Set button to complete the operation. The system will remain in
Routing Mode.
Select the Input
Select the Output
Press the Set button

15
OPERATING THE 8X8 DVI DUAL LINK MATRIX
System Lock Mode
Locking the Matrix prevents changes to any of the Matrix settings. This feature
is useful in case any of the front panel buttons are pressed by accident. Locking
the Matrix also prevents changes using the IR Remote Control Unit.
1 Press the Lock button to activate System Lock Mode.
2 Press the Lock button a second time to deactivate System Lock Mode.
Returning to Standby Mode
Press the Cancel button, while in any mode, to return to the Standby Mode
screen.
Press the Lock button
Press the Cancel button

16
OPERATING THE 8X8 DVI DUAL LINK MATRIX
Cycling between Information Screens
Press the Cancel button, while in Status Check Mode, to cycle through the
Information Screens.
Cancel
Cancel
Cancel
Press the Cancel button

17
OPERATING THE 8X8 DVI DUAL LINK MATRIX
Activating / Deactivating Standby Mode:
Press and hold the Cancel button for 5 seconds to activate or deactivate Standby
Mode.
Saving the Downstream EDID to Local Memory:
1 Press EDID button once to activate DSTOLO (Downstream To Local) Mode.
Hold for 5 seconds
Press EDID button once