
:00 AM - 5:00 PM Monday through Friday, Pacifi c Tim
For 24 / 7 support, see the back of the product for the support number
efen LLC reserves the right to make changes in the hard ware, packaging and
any accompanying doc u men ta tion without prior written notice.
x8 DVI Dual Link Matrix with Push Button Controls
is a trademark of Gefen LL
2011 Gefen, LLC. All rights reserved.
All trademarks are the property of their respective owners.

Features
4 Front Panel Layou
Front Panel Descriptions
Back Panel Layou
7 Back Panel Descriptions
onnecting The 8x8 DVI Dual Link Matri
Wiring Diagram
Front Panel Displa
10 IR Remote Control Unit Layou
11 IR Remote Control Unit Installatio
12 IR Remote Control Unit Confi guratio
13 Using the IR Remote Control Uni
14 Operating The 8x8 DVI Dual Link Matri
cling between Information Screens
aving the Downstream EDID to Local Memor
aving the Default EDID to Local Memor
aving the current Routing Stat
21 Recalling a Routing Stat
25 RS-232 / Telnet Commands
25 EDID Mana
Miscellaneous
Web Interfac
View Matrix Status
3 Manage EDID
9 Maskin
74 Network Cable Wiring Diagram
75 Firmware Updat
77 Rack Mount Safety Informatio
78 Specifi cations
79 Warrant

ongratulations on your purchase of the GefenPRO 8x8 DVI Dual Link Matrix
with Push Button Controls with Push Button Controls. Your complete satisfaction
is ver
efenPRO
In the realm of video distribution, certain features are invaluable in a commercial
or broadcast environment. Accommodations such as a build-in power suppl
and fl at black rack-mount enclosures set GefenPRO apart from our traditional
roducts. Complex distribution units allow for professional DVI, 3G-SDI, and
DMI signals to be routed and converted easily and seamlessly, while being
backed up by a renowned and dependable technical support team. Gefen invites
ou to explore the GefenPRO product line and hopes that you fi nd the solution
he 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
sed to manage local source routing. Four methods are available for controlling
the GefenPRO 8x8 DVI Dual Link Matrix: front panel push buttons, IR remote,
-232 interface, or using IP control with the built-in Web interface.
onnect up to eight DVI source devices to the GefenPRO 8x8 DVI Dual Link
atrix with Push Button Controls using the supplied DVI cables. Connect up to
ight monitors to the DVI outputs. Plug in the power cord and apply power to the
atrix. 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

READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE GEFENPRO 8X8 DVI DUAL LINK MATRIX WITH
• The 8x8 DVI Dual Link Matrix with Push Button Controls does not support
• When the Matrix is used for the fi rst time, make sure that a DVI monitor is
owered and connected to one of the DVI outputs on the 8x8 DVI Dual Link
atrix 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 b
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 30 for more information.
• There is no internal scaling in the 8x8 DVI Dual Link Matrix with Push Button
ontrols. Each monitor attached to the Matrix must be able to display the
esolutions output by the source device(s). For maximum compatibility it is
ecommended that only one common resolution be used by each source
• Advanced EDID features are accessible through the RS-232 serial command
IMPORTANT: If the unit is installed in a cl
assembly, do not block the ventilation holes of the enclosure.

Features
• Increases productivit
upports resolutions up to 1920x1200 (Single Link) and 3840x2400 (Dual
• Front panel control buttons for local switchin
erial RS-232 interface for remote control via a computer or control
• Discrete IR remote control switchin
• Advanced EDID management permits upload of custom internal or external
upports DDWG standards for DVI
tatus LCD (shows routing status
• Firmware upgrade via RS-23
1) GefenPRO 8x8 DVI Dual Link Matrix with Push Button Controls
8) 6 ft. DVI Dual Link cables (M-M

Cancel
This button is used to cancel a routing change in progress.
EDID
This button is used to manage EDID functions. See pages 17 - 19 for details.
This button is used to store and recall EDID and routing functions. See pages
14 - 22 for details.
These buttons are used to select the output when routing a source.
This LED will glow bright red when the AC power cord is connected to an
vailable electrical outlet.
Displays the current routing status of the Matrix and is also used to manage
This button enables / disables the locking of the front panel buttons, preventing
accidental changes.
The Preset button is used to select or recall stored preset routing states.
This button is used to mask (disable / enable) displays from receiving a video
These buttons are used to select the input when routing to a display.
eceives signals from the IR Remote Control unit.
ower Switch
Powers the Matrix ON or OFF.

110 / 220 V AC (50 / 60 Hz) Power Receptacle
onnect the included AC power cord from this receptacle to an available
Fuse 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.
onnect 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 groundin
wire should be attached from the grounding terminal to an approved ground
ath.
5 IP Control Interface
onnect to this port to control the 8x8 DVI Dual Link Matrix with Push Button
ontrols using IP Control. See page 24 for details.
onnect an IR extender cable to this port (Gefen part no. EXT-RMT-EXTIR).
onnect DVI monitors to these ports.
onnects 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 23 for more
information.

CONNECTING AND OPERATING TH
X8 DVI DUAL LINK MATRIX WITH PUSH BUTTON CONTROL
How to Connect the 8x8 DVI Dual Link Matrix with Push Button Controls
1.
onnect 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
onnect 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
onnect the included AC power cable to the power receptacle on the rear
anel 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.
Wiring Diagram for the 8x8 DVI Dual Link Matrix with Push Button Controls
GEF-DVI-848DL-PB
Dual-Link DVI
Displays
8x
Dual-Link DVI
Sources
8x
Matrix
RS-232 Controller
Computer
(IP Control)
DVI DUAL LINK CABLE
RS-232 CABLE
ETHERNET CABLE
ATTENTION: This product should always be connected to a
rounded electrical socket.

ain Display of the GefenPRO 8x8 DVI Dual Link Matrix is a 16-character
. This display will show the standby screen and will also be
sed to aid in performing routing commands. When the unit is powered on, the
ollowing screen is displayed
After a few moments, the Standby Screen is displayed. The Standby Screen is
isplaying Additional Information
ancel button, consecutively, will cycle through screens displaying
the firmware version and boot loader version, IP address, MAC address, and the
IR remote channel

RMT-8IR
Remote Control Uni
This LED will be activated momentarily each time a button is pressed.
ource / Monitor Selection Buttons (1 - 8
ese buttons are used to selec
ee page 13 for information on using the IR Remote Control unit.
NOTE: An Activity Indicator that fl ashes quickly while holding down
any one of the 8 buttons indicates a low battery. Replace the IR
emote Control battery as soon as possibl

emove the battery cover on the back of the IR Remote Control unit.
2. Insert the included batter
into the open battery slot. The positive (+) side of
the battery should be facing up.
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. Use only 3V lithium battery type CR-2032.

12
IR REMOTE CONFIGURATIO
How to Resolve IR Code Confl icts
In the event that IR commands from other remote controls interfere with the
upplied IR Remote Control unit, changing the IR channel on the IR Remote
ontrol unit will fi x the problem. The IR Remote Control unit has a bank of DIP
witches used for setting the IR channel.
The DIP switch bank is located underneath the battery cover.
It is important that the IR channel on the Remote Control unit, matches the IR
hannel 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 53
or information on how to change the IR channel on the 8x8 DVI Dual Link Matrix.

SING THE IR REMOTE CONTROL UNI
IR Remote Control Key Mappin
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
orresponding inputs and outputs.
Routing Sources using the IR Remote Control uni
Issuing a routing command is a two step process. The fi rst step is to select the
onitor where the source will be routed. The second step is to select the source.
Example
oute 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.
oute 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.

OPERATING THE 8X8 DVI DUAL LINK MATRI
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.
Press the desired Output button. One or more Output buttons may be
4 Press the Set button to complete the operation. The system will remain in

15
OPERATING THE 8X8 DVI DUAL LINK MATRI
Locking the Matrix prevents changes to any of the Matrix settings. This feature
is use
ul in case any of the front panel buttons are pressed by accident. Lockin
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.
Press the Cancel button, while in any mode, to return to the Standby Mode

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

17
OPERATING THE 8X8 DVI DUAL LINK MATRI
Activating / Deactivating Standby Mode
Press and hold the Cancel button for 5 seconds to activate or deactivate Standb
the Downstream EDID to Local Memor
to activate DSTOLO (Downstream To Local) Mode.

OPERATING THE DVI 8X8 DUAL LINK MATRI
2 Press the Output button to select the EDID data source.
Press the Input button to select EDID data destination.
4 Press the Set button to complete the operation. The system will remain in

19
OPERATING THE DVI 8X8 DUAL LINK MATRI
Saving the default EDID to Local Memor
wice to activate DETOLO (Default EDID To Local
.
2 Press the Input button to select EDID data destination.
Press the Set button to complete the operation. The system will remain in
DETOLO mode.

0
OPERATING THE DVI 8X8 DUAL LINK MATRI
Saving the current Routing Stat
et the routing state (see page 14), then press the PreSet button
.
2 Press an Input button
1 - 8) to store the current routing state.
Press the Set button to complete the operation. The system will remain in

OPERATING THE DVI 8X8 DUAL LINK MATRI
1 Press the PreSet button
.
2 Press the Input button
1 - 8) of the routing state to be recalled.
Press the Set button to complete the operation. The system will remain in

2
OPERATING THE 8X8 DVI DUAL LINK MATRI
asking prevents the output device (display, etc) from receiving an output signal,
instead of powering-down the output device. The masking process is identical for
asking or unmasking outputs.
the Mask button to activate Mask M
elect the Output to be masked.
Press the Set button to complete the operation. The system will remain in

RS-232 SERIAL CONTROL
RS232 Settings
Bits per second ................................................................................................. 19200
Data bits ....................................................................................................................
Parity .................................................................................................................. Non
top bits .....................................................................................................................
Flow Control ....................................................................................................... Non
54321
9876
12345
6789
Only Pins 2 (RX), 3 (TX), and 5 (Ground) are used on the RS-232 serial interface
IMPORTANT: When sending RS-232 commands, a carriage return
-232 / Telnet commands, parameters, and device names are n

Confi guring the IP Address
supports IP-based control using Telnet or the built-in
Web-based GUI. To set up IP control, the network settings for the
ust be confi gured via RS-232. The default network settings for the
onnect an RS-232 cable from the PC to the
2. Launch a terminal emulation program (e.g. HyperTerminal) and use the
et the IP address for the matrix using the
et the subnet mask using the
snetmask command (see page 42 for
et the gateway (router) IP address using the
see page 39 for details).
et the Telnet listening port using the
see page 38 for details).
et the HTTP listening port using the
see page 37 for details).
. Power-cycle the matrix to reboot and complete all IP setting changes.
.Type the IP address that was specifi ed in step 3, in a web browser to access
the Web GUI or use the same IP address to Telnet to the matrix.
NOTE: Depending upon the network, the IP address, subnet mask,
ateway IP, Telnet port, and HTTP port will need to be set. Consult
our network administrator to obtain the proper settings.

5
RS-232 / TELNET COMMAND
Enables / disables dynamic EDID
ead downstream EDID and stores in any Local Inpu
ets Local EDID to Default EDID
downstream EDID and stores in EDID Ban
downstream EDID and stores into a L
ead EDID from an EDID bank and sends to serial por
ead downstream EDID and sends to serial por
ead Input Local EDID and sends to serial por
namic_edid Command
The #dynamic_edid command provides the ability to route any downstream
EDID to any input. When enabled, the EDID is copied to all inputs from the last
elected active output. When disabled, the EDID is copied to all inputs from the
rst active display detected, starting from Output 1.
The default setting for Dynamic EDID is

edidbatolo command reads the downstream EDID and stores it to any local
ht inputs can be specifi ed.
edidbatolo param1 param2 [param3...param9
aram1 EDID bank offset [1 - 3]
If param2 = 0, then the EDID in the specifi ed bank is copied to all eight inputs.
nished reading EDID from bank
nished loading EDID to local
nished reading EDID from bank 4
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local 6
nished loading EDID to local
nished loading EDID to local

7
RS-232 / TELNET COMMAND
ediddetolo function stores the Default EDID (640x480) in the specifi e
Local EDID inputs. Up to eight inputs can be specifi ed.
ediddetolo param1 [param2...param9
If param1 = 0, then all 8 DVI inputs will be set to the Default EDID.
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local 6
nished loading EDID to local
nished loading EDID to local

ediddstoba function reads the downstream EDID and stores it to a specifi ed
aram1 A downstream monitor [1 - 8]
nished reading EDID from output 4
nished loading EDID to bank

9
RS-232 / TELNET COMMAND
the downstream EDID and stores it to a L
ediddstolo param1 param2 [param3...param9
aram1 A downstream monitor [1 - 8]
If param2 = 0, then the downstream EDID is stored to all 8 DVI inputs.
nished reading EDID from output
nished loading EDID to local
nished reading EDID from output
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local 6
nished loading EDID to local
nished loading EDID to local

0
RS-232 / TELNET COMMAND
lock_edid Function
The #lock_edid function secures the Local EDID and disables the automatic
oading of the downstream EDID after the Matrix is powered on.

rbaedid Function
The #prbaedid function reads the EDID fi le from the specifi ed bank and sends to
nished reading EDID from bank
x00 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0x
x4C 0x2D 0xAC 0x06 0x01 0x00 0x00 0x
x34 0x13 0x01 0x03 0x80 0x66 0x39 0x7
x0A 0xEE 0x91 0xA3 0x54 0x4C 0x99 0x
x0F 0x50 0x54 0xBD 0xEF 0x80 0x71 0x4
x81 0x00 0x81 0x40 0x81 0x80 0x95 0x
x95 0x0F 0xB3 0x00 0xA9 0x40 0x02 0x
x80 0x18 0x71 0x38 0x2D 0x40 0x58 0x
x45 0x00 0xA0 0x5A 0x00 0x00 0x00 0x1
x66 0x21 0x50 0xB0 0x51 0x00 0x1B 0x
x40 0x70 0x36 0x00 0xA0 0x5A 0x00 0x
x00 0x1E 0x00 0x00 0x00 0xFD 0x00 0x1
x4B 0x1A 0x51 0x17 0x00 0x0A 0x20 0x
x20 0x20 0x20 0x20 0x00 0x00 0x00 0xF
x00 0x53 0x41 0x4D 0x53 0x55 0x4E 0x4
x0A 0x20 0x20 0x20 0x20 0x20 0x01 0x
x02 0x03 0x29 0xF1 0x46 0x90 0x04 0x
x03 0x20 0x22 0x23 0x09 0x07 0x07 0x
x01 0x00 0x00 0xE2 0x00 0x0F 0xE3 0x
x03 0x01 0x6E 0x03 0x0C 0x00 0x20 0x
x00 0x00 0x00 0x00 0x00 0x00 0x00 0x
x00 0x00 0x00 0x00 0x00 0x00 0x00 0x
x00 0x00 0x00 0x00 0x00 0x00 0x00 0x

2
RS-232 / TELNET COMMAND
rdsedid Function
The #prdsedid function reads the downstream EDID and sends it to the serial
aram1 A downstream monitor [1 - 8]
nished reading EDID from output
x00 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0x
x4C 0x2D 0xAC 0x06 0x01 0x00 0x00 0x
x34 0x13 0x01 0x03 0x80 0x66 0x39 0x7
x0A 0xEE 0x91 0xA3 0x54 0x4C 0x99 0x
x0F 0x50 0x54 0xBD 0xEF 0x80 0x71 0x4
x81 0x00 0x81 0x40 0x81 0x80 0x95 0x
x95 0x0F 0xB3 0x00 0xA9 0x40 0x02 0x
x80 0x18 0x71 0x38 0x2D 0x40 0x58 0x
x45 0x00 0xA0 0x5A 0x00 0x00 0x00 0x1
x66 0x21 0x50 0xB0 0x51 0x00 0x1B 0x
x40 0x70 0x36 0x00 0xA0 0x5A 0x00 0x
x00 0x1E 0x00 0x00 0x00 0xFD 0x00 0x1
x4B 0x1A 0x51 0x17 0x00 0x0A 0x20 0x
x20 0x20 0x20 0x20 0x00 0x00 0x00 0xF
x00 0x53 0x41 0x4D 0x53 0x55 0x4E 0x4
x0A 0x20 0x20 0x20 0x20 0x20 0x01 0x
x02 0x03 0x29 0xF1 0x46 0x90 0x04 0x
x03 0x20 0x22 0x23 0x09 0x07 0x07 0x
x01 0x00 0x00 0xE2 0x00 0x0F 0xE3 0x
x03 0x01 0x6E 0x03 0x0C 0x00 0x20 0x
x00 0x00 0x00 0x00 0x00 0x00 0x00 0x
x00 0x00 0x00 0x00 0x00 0x00 0x00 0x
x00 0x00 0x00 0x00 0x00 0x00 0x00 0x

redidst Function
The #predidst function reads the downstream EDID. This function displays a
table containin
details relating to the Local EDID and the monitor name.
------|-----------|------
1 | Default | GEFEN_XPT_DL
2 | Output_1
3 | Default | GEFEN_XPT_DL
4 | Default | GEFEN_XPT_DL
5 | External | SAMSUNG

rloedid Function
The #prloedid function reads the local EDID of a specifi ed input and spools it to
the serial port.
aram1 A specifi ed Input [1 - 8]
nished reading EDID from Local EDID input
x00 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0x
x1C 0xA6 0x00 0x01 0x00 0x00 0x00 0x
x01 0x14 0x01 0x03 0x80 0x50 0x2D 0x7
x0A 0x0D 0xC9 0xA0 0x57 0x47 0x98 0x
x12 0x48 0x4C 0x21 0x4F 0x00 0x81 0x
xA9 0x40 0xD1 0x00 0x71 0x40 0x01 0x
x01 0x01 0x01 0x01 0x01 0x01 0x30 0x
x00 0x98 0x51 0x00 0x2A 0x40 0x30 0x7
x13 0x00 0x52 0x0E 0x11 0x00 0x00 0x1
xB0 0x68 0x00 0xA0 0xA0 0x40 0x2E 0x
x30 0x20 0x36 0x00 0x81 0x90 0x21 0x
x00 0x1E 0x00 0x00 0x00 0xFC 0x00 0x4
x45 0x46 0x45 0x4E 0x5F 0x58 0x50 0x54
x5F 0x44 0x4C 0x20 0x00 0x00 0x00 0xF
x00 0x3B 0x3D 0x0F 0x71 0x1C 0x00 0x
x20 0x20 0x20 0x20 0x20 0x20 0x00 0x

5
RS-232 / TELNET COMMAND
IP / Telnet Confi guration
et Telnet welcome message on logi
ipconfi g Displays all TCP/IP settings
resetip
esets IP confi guration to factory settings
ets the Web server listening por
Prompts for password when using Telne
ets the Telnet listening por
ets the user name for the login procedur
ets the IP gateway address
Prompts for password when using Telne
show_telnet_username Prompts for user name when using Telne
Displays the hardware and fi rmwar
ets the IP address of the matri
se password during Telnet sessions
display_telnet_welcome Command
The #display_telnet_welcome command sets (enables/disables) the Telne
welcome message on login.
display_telnet_welcome param
elnet welcome at login is set to ON

The #ipconfi g command displays the current TCP/IP settings for the matrix.
------------- TCP/IP settings -------------
elnet password at login is set to ON
elnet welcome at login is set to ON

7
RS-232 / TELNET COMMAND
The #resetip command resets all TCP/IP settings to factory defaults.
The matrix must be rebooted after executing this command.
eset ip confi guration to factory defaul
set_http_port Command
The #set_http_port command sets the Web server listening port.
The default port setting is
The matrix must be rebooted after executing this command.

set_telnet_pass Command
The #set_telnet_pass command sets the Telnet password. The maximum length
o
the password is 20 characters. The password is case-sensitive
The default password is Admin
The matrix must be rebooted after executing this command.
set_telnet_pass reindeer
elnet password updated to: reindeer
set_telnet_port Command
The #set_telnet_port command sets the Telnet listening port
The default port setting is
The matrix must be rebooted after executing this command.

9
RS-232 / TELNET COMMAND
set_telnet_username Command
The #set_telnet_username command sets the Telnet user name. The maximum
ength of the user name is 20 characters. The user name is case-sensitive.
set_telnet_username param
The matrix must be rebooted after executing this command.
set_telnet_username andre
elnet login updated to: andre
The #sgateway sets the IP gateway (router) address. Dot-decimal notation must
be used when specifying the IP address. The default address is 192.168.1.254.
The default gateway IP address is
4
The matrix must be rebooted a
ter executing this command.
ew IP Gateway set to: 192.168.1.

0
RS-232 / TELNET COMMAND
show_telnet_pass Command
The #show_telnet_pass command shows the Telnet password for logi
show_telnet_username Command
The #show_telnet_username command returns the user name required for login.

show_ver_data Command
The #show_ver_data command displays the hardware and fi rmware version of
th
add Command
The #sipadd command sets the IP address of the matrix. Dot-decimal notation
ust be used when specifying the IP address.
The matrix must be rebooted after executing this command.

2
RS-232 / TELNET COMMAND
snetmask Command
The #snetmask command sets the IP network mask. Dot-decimal notation must
be used when speci
The matrix must be rebooted after executing this command.
use_telnet_pass Command
The #use_telnet_pass command requires or disables login credentials.
elnet password at login is set to ON

ecalls a routing / mask prese
Prints the routing preset tabl
aves the current routing/masking state to
outes the specifi ed inputs to the specifi ed
outes the specifi ed input to all outputs
The #callpreset command recalls a routing preset. Any masked outputs will also

reset Command
The #prpreset command displays the routing preset table.
reSet|Out1| 2 | 3 | 4 | 5 | 6 | 7 |
-----|----|---|---|---|---|---|---|----
1 |M 0 |M 0|M 0|M 0|M 0|M 0|M 0|M
2 |A 1 |A 1|A 3|A 4|A 5|A 1|A 7|A
3 |M 0 |M 0|M 0|M 0|M 0|M 0|M 0|M
4 |M 0 |M 0|M 0|M 0|M 0|M 0|M 0|M
5 |M 0 |M 0|M 0|M 0|M 0|M 0|M 0|M
6 |M 0 |M 0|M 0|M 0|M 0|M 0|M 0|M
7 |M 0 |M 0|M 0|M 0|M 0|M 0|M 0|M
8 |M 0 |M 0|M 0|M 0|M 0|M 0|M 0|M
-----|----|---|---|---|---|---|---|----

5
RS-232 / TELNET COMMAND
The #savepreset command saves the current routing state to the specifi e
reset. Any masked outputs will also be saved as part of the current routing

Command
The r commandoutes the specifi ed input to the specifi ed outputs.
param1 param2 [param3...param
= 0, then the specifi ed input is routed to all outputs.
nput 7 is routed to outputs: 3 4 5 6 1
If Dynamic EDID (see page 25) is enabled, then the last output in the list will be
aved to the specifi ed input
nput 7 is routed to outputs: 3 4 5 6 1
nished reading EDID from output
nished loading EDID to local
ll outputs are routed to input

7
RS-232 / TELNET COMMAND
s Command
The s command routes the specifi ed input to all outputs.
ll outputs are routed to input

asks the selected (video) output(s
nmasks the selected output(s
maskout Command
The #maskout command allows blanking of the specifi ed outputs.
The current masking state will be lost if power is interrupted or if the masking
tate is not saved (see #savepreset on page 45).

9
RS-232 / TELNET COMMAND
unmaskout Command
The #unmaskout command unmasks the specifi ed outputs. If param1 = 0, then
all outputs will be unmasked.

50
RS-232 / TELNET COMMAND
esets the matrix to factory default routin
help Displays all available commands
lock_
Toggles the +5V lock power stat
pecifi es a name for an inpu
ets the IR channel of the matri
pecifi es a name for an outpu
show_temp Displays the voltages of the internal
show_voltage Displays the voltages of the internal
Toggles / displays +5V inpu
Displays the dual-link / single-link status
tabl
Displays the current routing status
activebolo Command
The #activebolo command activates the boot loader. This command is used
when updating the matrix fi rmware. See page 75 for details on this procedure.
o download the fi le DVI8x8DL please type the command
o download the fi le GEFMTXFP please type the command

fadefault Command
The #fadefault command disables the EDID lock state, sets the default routin
tate (1-1, 2-2, 3-3, etc.) and resets the input and output names to the default
ames (e.g. Output 1, Input 1).
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local
nished loading EDID to local 6
nished loading EDID to local
nished loading EDID to local

52
RS-232 / TELNET COMMAND
The #help command displays help on the specifi ed command. If param1 is not
pecifi ed, then the full list of commands is displayed.
md #callpreset: Recall a routing and mask state prese
lock_fo Command
The #lock_fo enables/disables the power lock state. Enabling this featur
will store the +5V status for each input prior to shutting down the matrix. This
ommand preserves the +5V state when the unit is restarted.

set_input_name Command
The #set_input_name command provides a name to the selected input.
For example,
Input 1” could be renamed as “Computer 1”. The maximum string
is 15 characters. Special characters and spaces are not
ermitted. If required, use the underscore character (“_”) to separate characters.
set_input_name param1 param
set_input_name 5 computer
omputer1 is assigned to input
set_ir Command
The #set_ir set the IR channel for the matrix. The associated DIP switch settings
or the IR remote control unit are returned. See page 12 for details on setting the
IR channel for the IR remote control.

set_output_name Command
The #set_output_name command provides a name to the selected output. For
xample, “Output 1” could be renamed as “HDDisplay”. The maximum strin
is 15 characters. Special characters and spaces are not
ermitted. If required, use the underscore character (“_”) to separate characters.
set_output_name param1 param
set_output_name 3 display_
splay_3 is assigned to output
show_temp
The #show_temp command provides temperature information for the matrix.
emperature near main power supply is 4
emperature near cross point is 5
emperature near power supply input board is 4

55
RS-232 / TELNET COMMAND
The #show_voltage command provides voltage information for the matrix.
oltage 3.3 , measured 3344 m
oltage 12 , measured 11905 m

Command
Enables / disables 5V on pin 14 of the specifi ed DVI input. This command is
sed when connecting the Receiver module of fi ber optic extenders, which
WARNING: Before connect a computer to the DVI input, make
ure to disable the 5V on the DVI input. Otherwise, the video
ard on the computer may become damaged.

57
RS-232 / TELNET COMMAND
Command
The l (lower-case “L”) command displays the link status of each input. If the
input is receivin
a dual-link signal, then the Link status will be set to “Dual”. If a
ingle-link source is used, then the Link status will be set to “Single”.
-------|----------|--------
-------|----------|--------

Command
The m command displays the current matrix status and routing information.
Output | Input | HPD | Status
--------------|----------------|-------|--------
Output_1| Input_1| LOW | ACTIVE
Output_2| Input_2| HIGH | ACTIVE
Output_3| Input_3| LOW | ACTIVE
Output_4| Input_4| LOW | ACTIVE
Output_5| Input_5| LOW | ACTIVE
Output_6| Input_6| LOW | ACTIVE
Output_7| Input_7| LOW | ACTIVE
Output_8| Input_8| LOW | ACTIVE
--------------|----------------|-------|-------DID lock

atrix Status
Displays the current routing status of each input and output on the matrix.
lick to refresh the Matrix
tatus scree
heck this box to enable Auto
resh. The Auto Refresh function
automatically refreshes the interface

sed to route the specifi ed input to the selected output(s). To route a source,
lace a check mark next to each Output. Next, click the radio button next to
the desired Input. Press the Switch button to apply the routing change.
lick this button to apply the routing change.

lick the down-arrow on the pull-down list to select
the routing state (1-8) to recall. Click the Recall
Preset button to recall the preset.
lick the drop-down list to select
the preset location (1-8).

elect the DVI output to rename from the pull-down list. Type the
ame of the output in the Output Name fi eld. Click the Save Output
Name button to save changes. See page 54 for naming restrictions.
elect the DVI input to rename from the pull-down list. Type the name of
the input in the Input Name fi eld. Click the Save Input Name button to save
hanges. See page 53 for naming restrictions.

DID Status
Displays the current EDID status for each input on the matrix and
indicates the current Lock State.
heck this box to enable
Auto Refresh. Auto Refresh
will automaticall

Place a check mark next to the input(s) that should be set to the default EDID.
lick the Set Default EDID button to apply the default EDID to the selected
Press this button from the Manage EDID screen to access this

Place a check mark next to the input(s) that will receive the EDID data from the
le. The EDID fi le must be in .bin format. Click the Browse button to locate the
EDID on the computer. Click the Load EDID fi le button to upload the EDID fi le
to the matrix.
Press this button from the Manage EDID screen to
access this menu system.

elect the radio button next to the output, containing the EDID to be
downloaded. Click the Download EDID File to PC button to confi rm the
hange. The downloaded EDID fi le will be in .bin format.
Press this button from the Manage EDID screen to
access this menu s

Select Source to Copy from / Select Input(s) to Copy t
lick the radio button next to the input or output containing the EDID to
opy. Note that only a single input or output can be selected at a time.
Place a check mark next to the input(s) where the EDID will be copied.
lick the Set EDID button to confi rm the operation
Press this button from the Manage E
creen to access this menu system.

ecures the Local EDID and disables the automatic loadin
of the downstream EDID after the Matrix is powered on.
elect the radio button next to the
or On option then click the
pdate EDID Lock State button to apply the change.
The EDID Lock State has no effect when the Dynamic EDID
Press this button from the Manage EDID
creen to access this menu system.

Displays the current masking status for each output.
lick the Mask button to mask the selected output. If the output is already
masked then the button will read “Active” (enabled). Click the (“Active”) button
again to toggle the masking state to “Mask” (disabled).

Assigns IP address, subnet, gateway, HTTP listening port, and Telnet port.
Note that the MAC address can not be changed. Click the Save button to
appl
changes. The matrix must be rebooted for the changes to take effect.
ets the user name and password for Telnet sessions to the matrix.
lick the Save button to apply changes.

The Backup / Restore feature for the 8x8 DVIKVM Dual Link Matrix is not
urrently implemented and will be available in a future release of the fi rmware.

ower Status
Enabling this feature will store the +5V status for that input prior to shutting down
the matrix. This preserves the +5V state when the unit is restarted.
isted under
the column
titled “5 Volt”.
ttons to
toggle the
input power
ower lock status.
Auto Refresh
heck this box
to automaticall
WARNING: Use caution when applying power to inputs, as this
ay damage your equipment.

In the case of an accidental power loss to the matrix, the +5V state for each
input can be preserved.
et the specifi ed Power Status buttons (see previous page) and click the
adio button next to ON. Click the Update Power Lock State button to appl
By default, this option is set to

NETWORK CABLE WIRING DIAGRA
efen recommends the TIA/EIA-568-B wiring option. Please adhere to the table
below when fi eld-terminating the cable for use with Gefen products.
abling comes in stranded and solid core types. Gefen recommends using solid
s recommended to use one co
onnecting through a patch is not recommended.

The following items are required to update fi rmware
-232 Terminal (e.g. Windows-based PC running HyperTerminal).
-232 cable (do not use a null-modem cable
• Firmware fi les: DVI8x8 and GEFMTXFP
To begin the update procedure the matrix Boot Loader must be activated. To
activate the Boot Loader please follow the procedure below
onnect an RS-232 cable to the PC and open the terminal program using
activebolo
Two options will be provided
To download the fi le DVI8x8 please type the command ‘activebolo 0’
To download the fi le GEFMTXFP please type the command ‘activebolo 1’
This will begin the update process of the main board.
nce the Boot Loader is activated the following message should appear
. Press [1] on the computer keyboard to begin downloading program to the
================= Main Menu ===========================
ownload new program -------- 1
ncel ----------------------
7. Press [1] on the computer keyboard to begin downloading program to the
temporary memory.

. A message will appear in the terminal program
for the fi le to be sent ... (press ‘a’ to abort)
. In Hyperterminal, click Transfer > Send fi le...
lick Browse... and select the .BIN fi le corresponding to the boot loader
which was activated. In this fi rst case, the fi le should start with DVI8x8.
elect Ymodem for the protocol.
12. Press Send on the Send File dialog box.
13. A message will appear in Hyperterminal
rogramming Completed Successfull
14. The unit will exit the
epeat steps 3 - 12 for the fi le GEFMTXFP.

77
RACK MOUNT SAFETY INFORMATIO
aximum recommended ambient temperature: 45 ˚C (104 ˚F).
temperature inside the rack.
. Do not exceed maximum weight loads for the rack. Install heavier
quipment in the lower part of the rack to maintain stability.
onnect a bonding wire between an approval safety ground stu

aximum Pixel Clock...........................................................................2 x 165 MHz
nal................................................................................1.2 volts p-
Input DDC Signal...........................................................................5 volts p-p (TTL
DVI Input Connectors.......................................................... (8) DVI-I 29 pin femal
DVI Output Connectors....................................................... (8) DVI-I 29 pin femal
IR Extender................................................................................3.5 mm mini-stere
-232 Interface..................................................................................DB-9 femal
IP Interface.....................................................................................................RJ-4
Power Supply........................................................100 ~ 240 V AC (IEC connector
Power Consumption........................................................................70 Watts (max.
Operating Temperature...............................................0 ˚C ~ 45 ˚C / 32 ˚F ~ 113 ˚F
torage Temperature...............................................-20 ˚C ~ 60 ˚C / -4 ˚F ~ 140 ˚F
elative Humidity...............................................20% ~ 90% RH (no condensation
ack Size............................................................................................................2
Dimensions.......................................................................19.0” W x 3.5” H x 4.2”
hipping Weight.........................................................................................28.1 lbs.

efen warrants the equipment it manufactures to be free from defects in material
equipment fails because of such defects and Gefen is notifi ed within two (2)
ears from the date of shipment, Gefen will, at its option, repair or replace the
quipment, provided that the equipment has not been subjected to mechanical,
lectrical, or other abuse or modifi cations. Equipment that fails under conditions
other than those covered will be repaired at the current price of parts and labor in
ect 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 fi tness for any
articular purpose, all of which are expressly disclaimed.
1. Proof of sale may be required in order to claim warranty.
ustomers outside the US are responsible for shipping charges to and from
efen.
opper cables are limited to a 30 day warranty and cables must be in their
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
pecifi cations is subject to change without notice.
For the latest warranty coverage information, refer to the Warranty and Return
Policy under the Support section of the Gefen Web site at www.gefen.com.
lease register your product online by visiting the Register Product page
nder the Support section of the Gefen Web site

wIP is licenced under the BSD licence
opyright (c) 2001-2004 Swedish Institute of Computer Science.
edistribution and use in source and binary forms, with or without modifi cation,
are permitted provided that the following conditions are met
edistributions of source code must retain the above copyright notice, this
ist of conditions and the following disclaimer.
edistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation and
or other materials provided with the distribution.
. The name of the author may not be used to endorse or promote products
derived from this software without specifi c prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS’’ AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANT ABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE
F USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION
WEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER I
NTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
THERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,

Nordhoff St., Chatsworth CA 9131
818-772-9100 fax: 818-772-91
ww.gefenpro.com support@gefenpro.co