G&D DVIMUX4-DL-USB Owner's manual

G&D DVIMUX4-DL-USB
Installation and Operation

i· G&D DVIMUX4-DL-USB
About this manual
This manual has been carefully compiled and examined to the state-of-the-art.
G&D neither explicitly nor implicitly takes guarantee or responsibility for the qual-
ity, efficiency and marketability of the product when used for a certain purpose that
differs from the scope of service covered by this manual.
For damages which directly or indirectly result from the use of this manual as well
as for incidental damages or consequential damages, G&D is liable only in cases of
intent or gross negligence.
Caveat Emptor
G&D will not provide warranty for devices that:
Are not used as intended.
Are repaired or modified by unauthorized personnel.
Show severe external damages that was not reported on the receipt of goods.
Have been damaged by non G&D accessories.
G&D will not be liable for any consequential damages that could occur from using
the products.
Proof of trademark
All product and company names mentioned in this manual, and other documents
you have received alongside your G&D product, are trademarks or registered trade-
marks of the holder of rights.
© Guntermann & Drunck GmbH 2011. All rights reserved.
Version 1.31 – 17/03/2011
Firmware: 1.5.4
Guntermann & Drunck GmbH
Dortmunder Str. 4a
57234 Wilnsdorf
Germany
Phone [phone]
Fax [phone]
http://www.GDsys.de
[email protected]

Contents
G&D DVIMUX4-DL-USB · ii
Contents
Safety instructions ............................................................................................ 1
The »DVIMUX4-DL-USB« KVM switch ......................................................... 2
Package contents .............................................................................................. 2
Installation ....................................................................................................... 3
Overview of the interfaces .................................................................................. 3
Setting up the device .......................................................................................... 3
Connecting the console devices .......................................................................... 4
Connecting the computers .................................................................................. 5
Connecting the power supply ............................................................................. 6
Further information .......................................................................................... 7
Support of digital and analog video signals ......................................................... 7
Connecting USB 2.0 mass storage devices .......................................................... 7
Initiation .......................................................................................................... 8
Status displays .................................................................................................. 8
Switching between the computers ..................................................................... 9
Switching via buttons ......................................................................................... 9
Switching via key combinations ......................................................................... 9
Switching via step keys ...................................................................................... 9
Switching via serial device ............................................................................... 10
Configuration ................................................................................................. 12
Overview of the functions and default settings .................................................. 12
Operating the setup mode ................................................................................ 13
Operating the setup menu ................................................................................ 14
Configuration settings ...................................................................................... 16
Using single or double hotkeys ................................................................... 16
Changing the single hotkey ......................................................................... 17
Changing the double hotkey ....................................................................... 18
Changing the select keys ............................................................................. 19
Disabling/Enabling the hotkey delay .......................................................... 20
Resetting the default settings ...................................................................... 21
Auto-accessing the first channel .................................................................. 22
(De)activating the switching via front buttons ............................................. 22
(De)activating the switching via hotkeys ..................................................... 23
(De)activating the switching via step keys ................................................... 24
Changing the bit rate of the Service port ...................................................... 25
Changing the standard mode of the Service port .......................................... 26
Selecting the USB keyboard type ................................................................ 27
Order Numbers ............................................................................................... 29
Technical Data ............................................................................................... 30

Safety instructions
1· G&D DVIMUX4-DL-USB
Safety instructions
Please read the following safety instructions carefully before you start operating the
G&D product. The instructions well help in avoiding damages to the product and in
preventing possible injuries.
Keep this manual handy for all persons who will be using this product.
Follow all warnings or operating instructions which are on the device or stated in
this user manual.
, Beware of electric shocks
To avoid the risk of electric shock, do not open the device or remove the covers.
If service is required, please contact our technicians.
, Disconnect the main power plug or the power supply before installation
Before installation, ensure that the device has been disconnected from the power
source. Disconnect the main power plug or the power supply of the device.
, Ensure constant access to the power plugs
During the installation of the devices, ensure that the power plugs remain accessible.
! Avoid the risk of tripping over cables
Ensure that there is no risk of tripping over cables.
, Only use a grounded voltage source
Operate this device by using a grounded voltage source.
, Use only the provided G&D power pack
Operate this device with the provided G&D power pack or with the power pack
listed in the manual.
! Operate the device only in designated areas.
The devices are designed for indoor use. Avoid exposure to extreme cold, heat
or humidity.

The »DVIMUX4-DL-USB« KVM switch
G&D DVIMUX4-DL-USB · 2
The »DVIMUX4-DL-USB« KVM switch
The DVIMUX4-DL-USB KVM switch enables you to operate up to four computers
via one console.
The console has to be supplied with a USB keyboard, a USB mouse and a digital
and/or analog monitor. The computers connected to the KVM switch are operated
at the installed console.
The switching between computers takes place either via the pushbuttons on the
front panel, configurable key combinations, or a serial device which is connected to
the Service port.
The front panel of the device provides two USB 2.0 interfaces to operate any USB
devices. The connected USB devices are available to whichever active computer.
Package contents
1 × DVIMUX4-DL-USB KVM switch (basic or multi-channel variant)
1 × DVI-Divider adapter per supported video channel
1 × data cable (Update-Cable-2)
1 × power cable
1 × »Installation and Operation« manual
NOTE: The KVM switch emulates keyboard and mouse on each channel and
hence guarantees error-free booting at all times.
IMPORTANT: KVM cable sets are required to connect the computers to the KVM
switch. A list of the available KVM cable sets can be found on page 29.

Installation
3· G&D DVIMUX4-DL-USB
Installation
Overview of the interfaces
Front panel of the KVM switch
The front panel of the KVM switch provides two USB 2.0 interfaces to connect any
USB 2.0 devices.
The front panel also provides a service port. This port is used for operating the setup
menu (see Operating the setup menu on page 14 ff.) and for carrying out firmware
updates.
The active channel can be selected by using one of the four buttons on the front
panel. The front panel also provides several LEDs (see Status displays on page 8).
The back panel of the KVM switch
The back panel of the KVM switch provides interfaces to connect the console devices
and the computers. The following page contains a detailed description of these inter-
faces.
Setting up the device
1. Ensure that the computers, which are to be connected to the KVM switch, are
turned off. If the computers are provided with both keyboards and mouses,
unplug the cables of the input devices from the USB interfaces.
2. Place the KVM switch between the computers and the console. Please mind the
maximum cable length of five metres between the KVM switch and the computers
which are to be connected.
3. Before installing the KVM switch, decide which button on the front panel of the
device should be assigned to which computer.
NOTE: USB devices such as a printer or a mass storage device connected to one of
these interfaces are available to the active computer.
Figure 1: Front view of the KVM switch
Active
Status
CPU 2 CPU 3 CPU 4 CPU 1 User ServiceService
USB 2.0
Devices

Installation
G&D DVIMUX4-DL-USB · 4
Connecting the console devices
Keyb.: Insert the connection cable of the USB keyboard to this interface.
Mouse: Insert the connection cable of the USB mouse to this interface.
Line In: If desired, connect a microphone or headset to this interface.
Speaker: Connect the speaker for the output of the audio signals of the active compu-
ter to this interface.
Monitor 1: Connect the DVI cable of the monitor to this interface.
USB 2.0 Devices: If you want USB devices to be available to the connected computers
(e.g. a printer or a mass storage device), connect these devices to the interfaces on
the front panel (see figure 1 on page 3).
NOTE: Connect the cables of the console and the computers preferably block by
block and from the bottom up. By doing so, you will avoid already connected
cables blocking your view of the interfaces.
Figure 2: Interfaces to connect the console devices
NOTE: You can also connect the USB keyboard and/or mouse to the USB 2.0
Devices interfaces at the front panel of the device.
In this case, the keyboard cannot be used to switch between the channels.
NOTE: When deploying a multi-channel variant of the KVM switch, the separate
video signals of computers in a multi-monitor installation can be transmitted to
two (MC2), three (MC3), or four (MC4) monitors.
The device provides up to four video inputs (DVI-I CPU 1.x to 4.x) for each monitor
you want to connect.
If required, connect the other monitors to the Monitor x interfaces of the MC variant.
Power
Line In USB 2.0
Line Out
CPU 3
DVI-I CPU 3.1
Line In USB 2.0
Line Out Line In USB 2.0 Line Out
CPU 4
DVI-I CPU 4.1
CPU 1
DVI-I CPU 1.1
Line In USB 2.0
Line Out
CPU 2
DVI-I CPU 2.1
Monitor 1
Keyb./Mouse Speaker
CON
Line In

Installation
5· G&D DVIMUX4-DL-USB
Connecting the computers
Line In: If the audio signals of the computers are to be output over the speakers which are
connected to the KVM switch, use one of the audio connection cables (Audio-M/M)to
connect the computer’s Line Out interface to this interface.
Line Out: If you want to use a microphone or a headset at the console, use one of the
audio connection cables (Audio-M/M) to connect this interface to the computer’s
microphone input.
USB 2.0: Use one of the USB connection cables (USB-AM/BM) to connect one of the
computer‘s USB interfaces to this interface.
DVI-I CPU x.1: Connect the computer‘s video output to this interface.
If the computer provides a DVI-D video output, use a digital video cable 
(DVI-D-DL-M/M). In case of an analog VGA output, use an analog video
cable (VGA-M/DVI-A-M).
IMPORTANT: KVM cable sets are required to connect the computers to the KVM
switch. A list of the available KVM cable sets can be found on page 29.
Assign the KVM cable sets to the different computers and place them ready for
installation.
NOTE: To connect the (maximum four) computers to the KVM switch, the inter-
faces as shown below are available for each computer.
The label (e.g. CPU 1)assigns the interface to a specific computer and to the corre-
spondent button on the front panel.
Figure 3: Interfaces to connect the computers
NOTE: When deploying a multi-channel variant of the KVM switch, connect the
computer’s second, third, and fourth video output to the DVI-I CPU 1.x to 4.x ínter-
faces.
Power
CPU 4
DVI-I CPU 4.1
Line In USB 2.0
Line Out
CPU 1
DVI-I CPU 1.1
Line In USB 2.0
Line Out
CPU 2
DVI-I CPU 2.1
Line In USB 2.0
Line Out
CPU 3
DVI-I CPU 3.1
Line In USB 2.0
Line Out
Monitor 1
Keyb./Mouse Speaker
CON
Line In

Installation
G&D DVIMUX4-DL-USB · 6
Connecting the power supply
Power: Connect the power cable (PowerCable-2 Standard) to a power outlet and the
power socket of the KVM switch.
Figure 4: Interface to connect the power supply
Monitor 1
Keyb./Mouse Speaker
CON
Line In
Power
Line In USB 2.0
Line Out
CPU 3
DVI-I CPU 3.1
Line In USB 2.0
Line Out Line In USB 2.0 Line Out
CPU 4
DVI-I CPU 4.1
CPU 1
DVI-I CPU 1.1
Line In USB 2.0
Line Out
CPU 2
DVI-I CPU 2.1

Further information
7· G&D DVIMUX4-DL-USB
Further information
Support of digital and analog video signals
Computers that provide digital or analog video signals can be connected to the KVM
switches of the DVIMUX4-DL series. The signal type (digital or analog) that is transmit-
ted from computer to KVM switch is displayed unaltered on the connected monitor.
Uniform signal type within one video channel
Install a console monitor that can display the uniform signal type of the computer’s
video channels (only digital or analog).
Different signal types within one video channel
If digital (e.g. via CPU 1)as well as analog (e.g. via CPU 2) video signals of different
computers are transmitted on the same video channel, a DVI-Divider adapter must be
connected to the Monitor x interface of the KVM switch.
The adapter provides both DVI and VGA output. Connect both outputs of the
adapter to the console monitor.
Depending on the input signal, modern monitors usually switch the signal type inde-
pendently. Otherwise, the switching from digital to analog signal processing (and vice
versa) must take place manually by the user.
Connecting USB 2.0 mass storage devices
Any USB devices can be connected to the USB 2.0 interfaces on the front panel of
the KVM switch.
If the user switches the active channel, the USB device instantly is no longer available
at the computer that has been active so far. If the computer is writing data on the
mass storage device at this point in time, this process is going to be cancelled.
EXAMPLE: The video signal of all computers is digitally (DVI signals) transmitted
to the KVM switch. A digital monitor is required to display the signals on the con-
sole monitor.
NOTE: Choose a monitor which can process digital as well as analog video data.
Such monitors provide a DVI and a VGA interface.
IMPORTANT: To avoid data loss, use the Safely Remove Hardware function of the
applied operating system before switching the channel.

Initiation
G&D DVIMUX4-DL-USB · 8
Initiation
Turn on the Power switch on the back panel of the KVM switch.
As soon as the device is supplied with power, the green User LED lights up. The
KVM switch is now ready for operation.
Status displays
The LEDs on the front panel of the device enable you to control the operational status
at all time.
Section LED Status Meaning
CPU 1...4 Active on The KVM switch is currently active on this channel.
All inputs are forwarded to this computer.
All connected USB devices are provided to the active
computer.
off The channel is currently inactive.
Status on The computer is ready for operation.
off No computer is connected or the computer is turned off.
User Active on The keyboard was fully and properly initialised.
slowly
blinking
The LED is blinking after the device has been turned on
and until the keyboard has been initialised
blinking The setup mode of the KVM switch is active.
Status on The KVM switch is supplied with the necessary voltage.
off The KVM switch is turned off or is not supplied with the
necessary voltage.
If necessary, check if the power cable has been properly
connected.

Switching between the computers
9· G&D DVIMUX4-DL-USB
Switching between the computers
The user can either use the four buttons on the front panel of the device or key com-
binations to switch between different computers.
Keyboard and mouse inputs are forwarded to the active computer. The video signal
of the active computer is displayed at the console monitor.
Switching via buttons
How to use the buttons at the device to switch to a certain channel:
Press the button to enable the desired channel.
Switching via key combinations
How to use key combinations to switch to a certain channel:
Press Hotkey+Select key on the console keyboard.
The default settings allow you to switch between channels by pressing Ctrl and the
select keys 1to 4.
Switching via step keys
Alternative to using select keys to switch between channels connected to the KVM
switch is to use the step keys to switch the channels in ascending or descending order.
IMPORTANT: Switching between the channels takes place if the pressed key combi-
nation is released.
NOTE: If one of these key combinations interferes with a key combination of an
installed application program, the key combination of the KVM switch can be
adjusted (see page 17).
IMPORTANT: Step keys are deactivated in the default settings. Information on how
to enable this function are provided on page 24.
IMPORTANT: The active step keys depend on the selected select keys. The following
table lists the step keys depending on the active select keys.

Switching between the computers
G&D DVIMUX4-DL-USB · 10
How to use step keys to switch to a certain channel:
1. Press Hotkey+»Back« step key or Hotkey+»Forward« step key on the
console keyboard.
Switching via serial device
The channels can be switched via a serial device connected to the Service port of the
KVM switch. The serial device can either be a special keypad or a computer which
is terminal emulator operated.
Connection settings
Use the following connection settings for the serial end device to establish a serial
connection to the KVM switch.
Bits per second: 115.200 | or: 9.600 (see page 26)
Data bits: 8
Parity: none
Stop bits: 1
Flow control: none
Enabling the »Switch« mode
If necessary, change the standard mode (see page 27) of the Service port to this mode if
you want to switch channels via the serial device immediately after starting the KVM
switch.
An alternative to switching to the Switch mode is to enter the »!« command during
operation.
Select keys »Back« step key »Forward« step key
1...4 9 0
NUM 1...4 NUM 9NUM0
A...D I K
F1...F4 F9 F10
IMPORTANT: Use the following connection settings and the switching commands of
the KVM switch to successfully switch the channel with a serial end device.
IMPORTANT: The Service port of the KVM switch can be used to operate the setup
menu as well as to switch between the channels with a serial device.
Switching of channels via the serial device is possible only if the Switch mode is active!

Switching between the computers
11 · G&D DVIMUX4-DL-USB
Switching commands
The following commands are provided for switching the channel:
Messages
The KVM switch confirms the successful execution of a command and otherwise
sends a meassage.
Command Channel
1! 1
2! 2
3! 3
4! 4
<! switch to previous channel
>! switch to next channel
ADVICE: Use the »?!« command to show the currently accessing channel.
NOTE: The serial device carries out the command directly after it has been sent.
A message (see below) informs the serial device concerning the success or failure
of the switching of channels.
Message Meaning
In[x] All switching to channel [x] successful
E01 invalid channel number (out of range)
E06 channel switching has failed
E10 invalid command
E13 invalid value (out of range)
RS232 mode enabled switch mode (RS232) enabled

Configuration
G&D DVIMUX4-DL-USB · 12
Configuration
The configuration of the KVM switch can optionally be changed in the setup mode
or in the setup menu:
Enable the setup mode using the console keyboard. You can change the configura-
tion via special setup keys.
The setup menu is operated with a terminal emulator and provides a user interface
to configure the device.
Overview of the functions and default settings
The following table lists functions that can be configured as well as their default set-
tings of the KVM switch.
Detailed description of the functions is given in the following pages:
Basic operation of the setup mode as well as the setup menu is explained in the fol-
lowing pages.
All functions that can be configured for the KVM switch are described in detail from
page 16 ff.
NOTE: The USB keyboard type (see page 27) can only be selected in the setup menu
where you can also find the configuration settings of the KVM switch.
Function Default Page
Using single or double hotkeys single hotkeys 16
Changing the single hotkey Ctrl 17
Changing the double hotkey Ctrl+Shift 18
Changing the select keys 1to 419
Disabling/Enabling the hotkey delay 7 seconds 20
Resetting the default settings 21
Auto-accessing the first channel disabled 22
(De)activating the switching via front buttons enabled 22
(De)activating the switching via hotkeys enabled 23
(De)activating the switching via step keys disabled 24
Changing the bit rate of the Service port 115.200 25
Changing the standard mode of the Service port switch 26
Selecting the USB keyboard type PC Multimedia 27

Configuration
13 · G&D DVIMUX4-DL-USB
Operating the setup mode
The setup mode can be enabled using the console keyboard. After enabling, the con-
figuration of the KVM switch can be changed by using various step keys.
How to enable the setup mode:
Press the Hotkey+Backspace (default: Ctrl+Backspace) key combination to enable
the setup mode.
How to perform a setup function:
After enabling the setup mode, press one of the setup keys described on the fol-
lowing pages.
How to end the setup mode without performing a function:
Press ESC to end the setup mode.
NOTE: Only one setup function can be performed after the calling of the setup mode.
If you want to perform more functions, please restart the setup mode.
NOTE: The successful activation of the setup mode is displayed by the blinking
NUM, and Scroll control LEDs on the keyboard. Additionally, the yellow User
LED will blink at the KVM switch.
IMPORTANT: The key combination to enable the setup mode needs to be pressed
for seven seconds.
After the first call of the setup mode, the hotkey delay can be disabled by pressing
the setup key 8(see page 20).

Configuration
G&D DVIMUX4-DL-USB · 14
Operating the setup menu
The setup menu provides a convenient alternative to view and edit the configuration
of the KVM switch.
The switch can be operated through the setup menu which both easy operation and
adjustment of several settings within a session.
The setup menu can be operated via any terminal emulator (e.g. HyperTerminal or
PuTTY). Use the supplied service cable to connect the computer on which the termi-
nal emulator is installed with the Service port of the device.
How to establish a connection within the terminal emulator:
1. Start any terminal emulator (HyperTerminal or PuTTY, for example).
2. Establish a new connection in the terminal emulator and enter the following settings:
Bits per second: 115.200 | or: 9.600 (see page 25)
Data bits: 8
Parity: none
Stop bits: 1
Flow control: none
3. Use the provided data cable (Update-Cable-2) to connect the computer to the Service
port at the front panel of the KVM switch.
How to call up the setup menu:
1. Connect the jack plug of the serial data cable to the Service port at the front panel
of the device.
2. Use the terminal emulator to establish the connection to the KVM switch.
As soon as the connection is successfully established, the setup menu will be dis-
played in the terminal emulator (see figure on page 15).
NOTE: If the KVM switch is started while the connection is being established, the
G&D Firmware Update Utility will be displayed briefly before the setup menu opens.
This special utility is solely used by the support team.

Configuration
15 · G&D DVIMUX4-DL-USB
The setup menu lists all settings in tabular form:
The right column displays the active setting of the respective function.
Menu items with submenus containing more settings are indicated with three dots
(...) in the right column.
How to operate the setup menu:
1. Use the Arrowor Arrowkeys to select the desired menu item.
The active row is marked with angular arrows .
2. Depending on the type of menu item, thefollowing action(s) can be carried out:
Menu items whose settings are displayed in the right column can be changed
by pressing the Space key (repeatedly).
A menu item that has a sub-dialogue available can be opened by pressing Enter.
Settings for DVIMUX4-DL
Show System Info ...
Hotkey: Ctrl
Double Hotkey: NO
Select Key: 1..4
Hotkey Delay: YES
Set System Defaults ...
Select Ch.1 after Power up: No
Select Channel via Front Button: Yes
Select Channel via Hotkey: Yes
Select Channel via Step Key: 9 | 0
Service RS232 Bitrate: 115200
Service RS232 Startup Mode: Setup Menu
PS/2 Scancode Set: 2
PS/2 Keyboard Type: Standard
USB Keymode: ...
'Space': Toggle 'S': Save
NOTE: The PS/2 Scancode Set and PS/2 Keyboard Type are only relevant PS/2 variants
of the KVM switch and are therefore not described in this manual.
NOTE: The following pages provide detailed information on how to change a cer-
tain function.

Configuration
G&D DVIMUX4-DL-USB · 16
Configuration settings
Using single or double hotkeys
If many application programs with key combinations are operated on one computer
or if different G&D devices are used in one cascade, the number of available key
combinations might be restricted.
In such a case, it is appropriate to apply double hotkeys.
How to enable single or double hotkeys:
Depending on your settings, the active hotkey is converted into a double hotkey (or
vice versa):
Setup Mode
1. Press Hotkey+Backspace (default: Ctrl+Backspace) to enabled the setup mode.
If the hotkey delay is active, press the key combination for seven seconds.
2. Press one of the setup keys listed below to enable single or double hotkeys:
Senables single hotkeys
Adisables double hotkeys
Setup Menu
1. Use the terminal emulator to establish a connection to the KVM switch.
If the setup menu is not displayed, the Switch mode of the service port is
enabled. Enter »#!« to change to the setup menu.
2. Use the Arrowor Arrowkeys to select the Double Hotkey entry.
3. Press the Space key (repeatedly) to enable the usage of single or double hotkeys:
No enables single hotkeys
Yes disables double hotkeys
4. Press the Skey to save your settings.
Single Hotkey Double Hotkey
Ctrl Ctrl+Shift
Alt Alt+Shift
Alt Gr Alt Gr+Ctrl
Win Win+Ctrl
Shift Shift+Win

Configuration
17 · G&D DVIMUX4-DL-USB
Changing the single hotkey
Press the hotkey and the Backspace key simultaneously to start the setup mode of the
KVM switch. Pressing the hotkey and the select key simultaneously enables the
switching of channels.
If an application program or another G&D device uses the same hotkey within the
cascade, the hotkey can be changed.
How to change the current hotkey:
NOTE: The single hotkey Ctrl is preset at default.
Setup Mode
1. Press the Hotkey+Backspace (default: Ctrl+Backspace) key combination to
enable the setup mode.
If the hotkey delay is active, press the key combination for seven seconds.
2. Press one of the setup keys listed below to enable a certain hotkey:
Ctrl enables Ctrl hotkey
Alt enables Alt hotkey
Alt Gr enables Alt Gr hotkey
Win enables Win hotkey
Shift enables Shift hotkey
Setup Menu
1. Use the terminal emulator to establish a connection to the KVM switch.
If the setup menu is not displayed, the Switch mode of the service port is
enabled. Enter »#!« to change to the setup menu.
2. Use the Arrowor Arrowkeys to select the Hotkey entry.
3. Press the Space key (repeatedly) to enable a certain hotkey:
Ctrl enables Ctrl hotkey
Alt enables Alt hotkey
Alt Gr enables Alt Gr hotkey
Win enables Win hotkey
Shift enables Shift hotkey
4. Press the Skey to save your settings.