Gefen EXT-DPKVM-841 User manual

®
8x1 DPKVM
Switcher
EXT-DPKVM-841
User Manual
www.gefen.com

Technical Support:
Telephone [phone]
[phone]
Fax [phone]
Technical Support Hours:
8:00 AM to 5:00 PM Monday thru Friday.
Write To:
Gefen, LLC
c/o Customer Service
20600 Nordhoff St
Chatsworth, CA 91311
www.gefen.com
[email protected]
Notice
Gefen, LLC reserves the right to make changes in the hardware, packaging, and
any accompanying documentation without prior written notice.
8x1 DPKVM Switcher is a trademark of Gefen, LLC
© 2012 Gefen, LLC. All rights reserved.
All trademarks are the property of their respective owners.
ASKING FOR ASSISTANCE
Rev A4

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 IR Remote Control Unit
8 Layout and Description
9 Installing the Battery
10 Setting the IR Channel
11 Connecting the 8x1 DPKVM Switcher
11 Wiring Diagram
12 Operating the 8x1 DPKVM Switcher
12 Front Panel Buttons and LED Indicators
12 Switching sources using the front-panel buttons
12 Switching sources using the IR Remote Control Unit
13 Switching sources using RS-232
13 Switching sources using Telnet
14 RS-232 Control
15 RS-232 Commands
15 IP Configuration
20 General Commands
23 Routing Commands
24 Telnet Control
26 Firmware Update
27 Rack Ear Installation
28 Specifications
29 Warranty

1
INTRODUCTION
Congratulations on your purchase of the 8x1 DPKVM Switcher. Your complete
satisfaction is very important to us.
Gefen
Gefen delivers innovative and 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 install and simple to
operate.
The Gefen 8x1 DPKVM Switcher
Easily switch between eight computers using DisplayPort with the Gefen 8x1
DPKVM Switcher.
The rack-mountable Gefen 8x1 DPKVM Switcher offers an economical
solution for switching between eight different computers to one display location.
In addition, USB peripherals and audio are carried at the same time from each
source making this a very versatile solution.
Eliminating the need to purchase many displays, keyboards, and other
accessories for each computer in a studio or professional environment, this
versatile solution saves money, supports both Mac and PC-type computers, and
offers uncluttered and increased desktop space.
The 8x1 DPKVM Switcher outputs are: One DisplayPort, two USB 2.0 ports
(used for keyboard, mouse and other USB 2.0 peripherals) and an analog L/R
audio. This Switcher can be controlled using front-panel discrete switching, IP
control, the included IR Remote control, or the RS-232 port for switching automa-
tion.
The 8x1 DPKVM Switcher is compatible with all operating systems using Display-
Port and USB.
How It Works
Connect the eight included 6 foot DisplayPort cables between the computers
and the Switcher inputs. Connect the eight included USB cables between the
computers and the USB inputs. Connect the eight included audio cables between
the computers and the audio inputs. Connect the Switcher output to the monitor
using a DisplayPort cable. Connect the Switcher USB outputs to the USB pe-
ripherals. Connect the Switcher audio cables to the audio devices. Connect the
included 5V DC locking power supply to the 8x1 Switcher and connect the AC
power cord to an available electrical outlet. The currently selected source will be
displayed

READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE 8X1 DPKVM SWITCHER
• The 8x1 DPKVM Switcher supports Pass-through EDID. The Switcher will
use the EDID from the currently active input.
• Dual Link resolutions up to 2560 x 1600 are supported.
• HDCP content is not supported.
• This Switcher does not support DHCP.
• The default IR channel for both the Switcher and the IR Remote Control Unit
is channel 0. See page 10 for more information.
OPERATION NOTES
2

3
FEATURES
Features
• Switches between eight DisplayPort sources with USB 2.0 and Audio to one
display, keyboard, and mouse
• Supports resolutions up to 2560 x 1600
• Supports DisplayPort version 1.1a
• Green mode (low power consumption when DP source is not present)
• Firmware upgrade via RS-232 or Ethernet
• RS-232 control
• IP control
• IR remote control
• Supports USB 2.0 with backward-compatibility for USB 1.1
• Standby Feature (Green Mode)
• Control via Telnet
• Jack for external IR Receiver (EXT-RMT-EXTIR)
• Save space on your desktop
• Rack-mountable
Package Includes
(1) 8x1 DPKVM Switcher
(8) 6 ft. DisplayPort cables
(8) 6 ft. USB 2.0 cables (A - B)
(8) 6 ft. 3.5 mm mini-stereo audio cables
(1) IR Remote Control Unit
(1) 5V / 4A DC Locking Power Supply
(1) AC Power Cord
(1) Set Rack ears
(1) Quick-Start Guide

4
FRONT PANEL LAYOUT
Front Panel
4
2
13

5
FRONT PANEL DESCRIPTIONS
1 Input Indicators (1 - 8)
Each of these LED indicators glows bright blue according to the input selection
(see Input Buttons, below)
2 IR
Receives IR signals from the included IR Remote Control Unit.
3 Input Buttons (1 - 8)
Pressing each of these buttons selects the desired input source (1 - 8).
4 Power
This LED indicator will glow bright red when the unit is powered.

6
BACK PANEL LAYOUT
Back Panel
52 8
967
3 4
1 10

7
BACK PANEL DESCRIPTIONS
1 5V DC
Connect the included 5V DC locking power supply to this receptacle.
2 In 1 - In 8
Each of these ports will accept a standard DisplayPort source device.
3 Ext IR
Connect an IR extender cable to this port.
4 USB Out (1 - 2)
Connect USB devices (e.g. mouse devices, keyboards, etc.) to these ports.
5 Ethernet
Use an Ethernet cable to connect the Switcher to a network in order to
communicate via Telnet.
6 RS-232 Serial Port
This port is used for serial communication using an RS-232 control device. For
details, refer to page 14.
7 USB In (1 - 8)
Connect USB source devices to these ports.
8 DP Out
This port will accept a single standard DisplayPort output device. The currently
selected DisplayPort input source will be output via this port.
9 Audio Out
Connect an audio output device to this connectors using a 3.5 mm mini-stereo
cable. The audio output will be for the currently selected input source.
10 Audio In (1 - 8)
Connect up to eight (8) audio source devices to these ports using the included
3.5 mm mini-stereo cables.

IR REMOTE CONTROL UNIT
8
2
1 Activity Indicator
This LED will be activated momentarily each time a button is pressed.
2 Source Selection Buttons (1 - 8)
These buttons are used to select which source is routed to a monitor.
Layout and Description
1
NOTE: An Activity Indictor that flashes quickly while holding down any
one of the eight buttons indicates a low battery. Replace the IR Remote
Control battery as soon as possible.

IR REMOTE CONTROL UNIT
9
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.
WARNING: Risk of explosion if battery is replaced by an incorrect type.
Dispose of used batteries according to the instructions.
Battery Slot

IR REMOTE CONTROL UNIT
10
Corresponding DIP Switch Settings for each IR Channel
It is important that the IR channel on the Remote Control unit, matches the IR
channel set on the 8x1 DPKVM Switcher. For example, if both DIP switches on
the IR Remote Control unit are set to IR channel 0 (both DIP switches down),
then the 8x1 DPKVM Switcher must also be set to IR channel 0. See page 21 on
how to change the IR channel on the 8x1 DPKVM Switcher.
IR Channel 0
(default)
1 2
ON
Setting the IR Channel
In the event that IR commands from other remote controls interfere with the
supplied IR Remote Control unit, changing the IR Remote Control’s IR channel
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.
Left: Picture of the
opened rear battery
compartment of the IR
remote showing the
exposed DIP Switch
bank between the battery
chambers.
IR Channel 2
1 2
ON IR Channel 3
1 2
ON
IR Channel 1
1 2
ON
1 2

CONNECTING THE 8X1 DPKVM SWITCHER
11
How to Connect the 8x1 DPKVM Switcher
1 Connect up to eight (8) DisplayPort source devices to the DisplayPort inputs
on the back panel of the Switcher using DisplayPort cables.
2 Connect a DisplayPort-supported display to the DisplayPort output on the
back panel of the Switcher.
a OPTIONAL: To use the RS-232 communication feature, connect an
RS-232 cable between the Switcher and RS-232 host controller.
b OPTIONAL: To communicate with the Switcher using Telnet, connect
an Ethernet cable from the Ethernet jack on the back of the Switcher
to the network. See page 24 for more information on using the Telnet
feature.
c OPTIONAL: To extend the range of the IR control, connect an IR
Extender (Gefen part no. EXT-RMT-EXTIR) to the back of the Switcher.
3 Connect the included 5V locking power supply to the power receptacle on
the 8x1 DPKVM Switcher
4 Connect the opposite end of the power supply to an open wall socket power
source.
Wiring Diagram for the 8x1 DPKVM Switcher
EXT-DPKVM-841
Computer
Computer
Computer
Computer
Computer
Computer
Computer
Computer
DisplayPort
Display
Powered Speakers
DISPLAYPORT CABLE
MINI STEREO AUDIO CABLE
USB CABLE
IR
ETHERNET
RS-232 CABLE
DisplayPort KVM Switcher
IR Extender
RS-232 Controller
USB Mouse
USB Keyboard
Router
ATTENTION: This product should always be connected to a grounded
electrical socket.

OPERATING THE 8X1 DPKVM SWITCHER
12
Front Panel Buttons and LED Indicators
The front panel of the 8x1 DPKVM Switcher has a set of eight (8) LED
indicators, displaying which input (source) is being displayed. Each of these LED
indicators corresponds to one of the push-buttons on the front panel.
Switching sources using the front-panel buttons
Example: Switch to input 5 using the front-panel buttons:
1 Press button 5 on the front panel of the 8x1 DPKVM Switcher.
2 The LED indicator for input 5 will glow bright blue on the front panel.
Switching sources using the IR Remote Control
Example: Switch to Input 1 using the IR Remote Control:
1 Press button 1 on the IR Remote Control Unit. TheActivity Indicator on
the IR Remote Control Unit will glow yellow, indicating that a button was
pressed.
2 The LED indicator for input 1 will glow bright blue.
12
12

13
OPERATING THE 8X1 DPKVM SWITCHER
Switching sources using RS-232
Configure the Switch for use with RS-232 (see page 14 for details).
Example: Switch to input 4 using RS-232
1 Use the command r 4 to route the Switcher to Input 4. See page 15 for
important information on RS-232 commands. RS-232 commands are
case-sensitive.
2 The LED indicator for Input 4 will glow bright blue on the front panel.
Switching sources using Telnet
Configure the Switch for use with Telnet. See page 24 for details.
Example: Switch to Input 2 using the Telnet protocol
1 Use the command r 2 to route the Switcher to Input 2.
2 The LED indicator for Input 2 will glow bright blue.
2
2
r 4
Route to Input 4
1
Type Cmd: r 2
Route to Input 2
1

RS-232 CONTROL
14
Only pins 2 (Receive), 3 (Transmit), and 5 (Ground) are used for communication.
A null-modem adapter should not be used with this product.
54321
9876
12345
6789
Only Pins 2 (RX), 3 (TX), and 5 (Ground) are used on the RS-232 serial interface
Serial Port Settings
Bits per second ............................................................................................ 19200
Data bits ............................................................................................................... 8
Parity ............................................................................................................. None
Stop bits ................................................................................................................1
Flow Control .................................................................................................. None
NOTE: Only pins 2 (Receive), 3 (Transmit), and 5 (Ground) are used
for communication. A null-modem adapter should not be used with this
product.
IMPORTANT: When sending RS-232 commands, a carriage return and
a line feed character must be included at the end of each line.

RS-232 COMMANDS
15
Command Syntax
All RS-232 commands are case-sensitive and must be entered in lowercase.
Each command must be preceded by the ‘#’ character. A carriage return must
also be appended to every command.
Example:
#set_http_port 80[CR]
IP Configuration
Command Description
#get_pass Prompts for the Telnet password
#get_user_name Prompts for the Telnet username
#ipconfig Displays all TCP/IP settings
#rstip Sets IP configuration to default settings
#set_http_port Sets the Web server listening port
#set_pass Sets the Telnet password
#set_telnet_port Sets the Telnet listening port
#set_user_name Sets the Telnet user name
#sgateway Specifies the new gateway
#sipadd Specifies a new IP address
#snetmask Specifies a new net mask
#use_telnet_pass Toggles Telnet password prompt
#GET_PASS Command
The #GET_PASS command prompts for the Telnet password.
Syntax:
#get_pass
Parameters:
None

16
RS-232 COMMANDS
#GET_USER_NAME Command
The #GET_USER_NAME command prompts for the Telnet username.
Syntax:
#get_user_name
Parameters:
None
#IPCONFIG Command
The #IPCONFIG command displays all TCP/IP settings.
Syntax:
#ipconfig
Parameters:
None
#RSTIP Command
The #RSTIP command resets the IP configuration to the default settings.
Syntax:
#rstip
Parameters:
None

17
RS-232 COMMANDS
#SET_HTTP_PORT Command
The #SET_HTTP_PORT command sets the Web server listening port.
Syntax:
#set_http_port param1
Parameters:
param1 Port [0 - 255]
#SET_PASS Command
The #SET_PASS command sets Telnet password.
Syntax:
#set_pass param1
Parameters:
param1 String
Notes:
The maximum length of the password string is 20 characters.
#SET_TELNET_PORT Command
The #SET_TELNET_PORT command sets the Telnet server listening port.
Syntax:
#set_telnet_port param1
Parameters:
param1 Port [0 - 255]