AV4PRO-VGA
User Guide
COMPUTER
KVM
SPK
USB1 USB2
{
AV4PRO-VGA
AV4PRO-VGA-DUAL
AV4PRO-VGA-TRIPLE
AV4PRO-VGA-QUAD
MODE
www.adder.com

Configuration
Using the configuration menu..................................................13
General configuration................................................................14
Changing hotkeys..................................................................14
Mouse switching....................................................................14
OPTIONS port speed..............................................................14
OPTIONS port channel control behaviour............................14
Switching mode.....................................................................15
Miscellaneous functions........................................................15
Performing upgrades.................................................................16
Further information
Getting assistance.......................................................................23
Appendix 1 – Default EDID video modes..................................24
Appendix 2 – Cable pin-outs......................................................25
Warranty.....................................................................................26
Safety information.....................................................................26
Radio Frequency Energy............................................................27
Index

Mounting......................................................................................6
Connections..................................................................................7
User console.............................................................................7
Computer systems....................................................................8
Power in connection................................................................9
Optional RC4 remote control..................................................9
Channel switching by external control.....................................10
Synchronising multiple units......................................................11
Managing EDID video display information...............................12
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Installation
Selecting a computer.................................................................18
To select a computer using the front panel.........................18
To select a computer using hotkeys.....................................19
To select a computer using the mouse buttons...................20
To lock access to the computers...........................................21
Autoscanning..............................................................................22
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What is True Emulation?..............................................................3
AV4PRO-VGA features - front and rear......................................4
What’s in the box.........................................................................5
What you may additionally need................................................5
Operation

Introduction

Contents
1
1
2
Multiple switching
The attached peripheral devices can be
switched collectively to any computer system,
or can be linked to separate systems to
achieve multiple tasks in parallel. Multiple
switching can be controlled from the onscreen menu or using the front panel buttons.
Multiscreen versions
The AV4PRO-VGA range includes
separate models to support one, two,
three or four video heads per channel.
Intelligent display information
The AV4PRO-VGA units use our
EDID Emulation feature to ensure
that all computers are supplied with
the correct information about each
connected video display.

SPK
COMPUTER
KVM
SPK
USB1 USB2
MODE
www.adder.com
True Emulation
Earlier USB KVM switches relied upon
standard keyboard and mouse templates
to inform each computer system how to
deal with the connected peripherals. The
AV4PRO-VGA range succeeds in harvesting
the true identities of the connected keyboard
and mouse and presents those ‘real’ profiles
concurrently to every system. Thus, specialist
keyboards and mice can be fully supported.
USB Remote wakeup
The USB Remote Wakeup feature is fully
supported. Any connected computer can go
into sleep mode and be awakened (when its
channel is selected) as soon as you press a
key or move the mouse. The computer and
peripherals must support the USB Remote
Wakeup feature.

KVM
USB peripheral. The AV4PRO-VGA front panels make
it straightforward to control which peripherals should
connect to each system.
The AV4PRO-VGA units feature True Emulation which
ensures that the full characteristics of the connected
keyboard and mouse are passed to every system.


In addition to impressive VGA video performance, these
units offer more than just straight switching between
four systems. The KVM, speakers and two separate USB
devices attached to the AV4PRO-VGA units can either
be switched in unison, as normal, or you can mix your
peripherals between any of the systems to suit your
current tasks. For instance, you could be creating emails
on one system, listening to a soundtrack from another
while a third is sending documents to your printer
and a fourth performing another task with a different

Thank you for choosing a member of the AdderView
PRO (AV4PRO) family of professional switches from
Adder Technology. There are four versions of the
four-way AV4PRO-VGA, each of which allows a single
operator to control up to four computer systems
and share peripherals among them in a very flexible
manner. The AV4PRO-VGA can support one video head
per channel, whereas the slightly larger AV4PRO-VGADUAL, AV4PRO-VGA-TRIPLE and AV4PRO-VGA-QUAD
units support two, three and four video heads per
channel, respectively.

Introduction
2
Emulated USB switching
The issues with interpreting the complex USB data streams and recreating (or
Emulating) the identity of attached USB devices were eventually solved, leading
to the creation of the Emulated USB switch.
A neat side effect of the technique used is that each computer can be fooled
into thinking that the USB device is permanently connected to it, even when
the device is switched to another computer. This means that the enumeration
process for the USB device takes place only once, during the first power
on. After that, a computer merely sees a dormant version of the USB device
whenever the device is actually connected to a different computer.
However, it remains a complex task to dynamically assume the identity of a USB
device, distribute it among the connected computers and maintain all of the
necessary signals, states and processes. Therefore, manufacturers have previously
relied upon a fixed keyboard and mouse profile that is declared to each
computer, regardless of the actual connected devices. This precluded the use of
any special keyboard or mouse features over and above the standard layouts.
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Enumerated USB switching
The earliest attempts to switch USB devices applied a relatively ‘hands off’
approach. Enumerated USB switches are the electronic equivalent of those old
mechanical KVM switches with a large knob on the front.
Enumerated switches are so called because a connected USB device will be
required to perform a full initiation (a process called Enumeration) every time it is
switched; just as if you had pulled out the plug and then reconnected it.
Enumerated switches simply pass all signals straight through between the USB
device and the computer, they do not attempt to interpret any data. For most
devices, this offers an advantage because the switch just leaves them to get on
with their jobs without any interference or any hit on performance. However, it
means that a USB keyboard or mouse cannot be used to control the switching
process - a quick and simple control method expected by most users. Reliability
of switching is also an issue that has plagued enumerated switches, especially
when used with certain USB devices and particular operating systems.
True Emulation
Mindful of the limitations associated with the
USB
USB
OTHER USB
DEVICE
previous USB switching techniques, we set about KEYBOARD MOUSE
creating a more effective and elegant solution.
After a great deal of research and development,
HOST
True Emulation is the result.
CONTROLLER
True Emulation allows the complete identity of
the keyboard and mouse to be copied and then
presented to all of the connected computers.
EMULATION
ENGINE
This means that any keyboard offering specialist
function keys or any mouse with extra features
will be fully supported at each computer. As with
the previous emulation method, the unselected
computers will continue to see the identities
USB
USB
USB
USB
HUB
HUB
HUB
HUB
of the keyboard and mouse, which means that
no enumeration is necessary when their link
becomes active once again. This not only helps
PC
PC
PC
PC
to speed up the rate of reconnection, but also
1
2
3
4
raises the reliability of switching because USB
links are at their most vulnerable during the
The emulated section of
enumeration process.
the switch is shown in
True Emulation relies upon a high speed circuit,
blue and handles only the
called an Emulation Engine, to fully emulate
keyboard and mouse. The
the USB device identities and also interpret
green enumerated section
keyboard and mouse data streams. The result is
full support for KVM switching control via hotkey of the switch handles other
presses or the third button/scroll wheel of a
USB devices and also uses
mouse.
the USB hubs to link with
True Emulation is not necessarily required by
the computers.
other USB devices, which is why you will also
find two enumerated circuits included (shown in
green within the block diagram) alongside the True Emulation feature (shown
in blue). This allows those other USB devices to operate at their highest speeds,
without any intervention. The enumerated circuits benefit greatly from the
USB Hubs that are jointly used with the True Emulation system. Because they
interface directly and permanently with each computer, they help to stabilise the
dormant links, making errors during enumeration much less likely.
The dual switching arrangement provides further flexibility because the True
Emulation and enumerated sections can be switched in unison or independently
of each other, as required. Thus, your various peripherals can operate with
different computers at the same time.

True Emulation represents a significant breakthrough in sharing USB devices
between two or more computer systems. Until this point, the problem has been
how to create a USB switch that provides all of the following:
• Quick, transparent and reliable switching,
• Accurate representation of the connected USB keyboard and mouse,
• Switching control via the connected USB keyboard and/or mouse.
The difficulty in achieving all of the above requirements has been due to the
complexity of the USB standard. This has led to various problems that have
spawned a number of possible solutions.

What is True Emulation?
3
AV4PRO-VGA features - front and rear
The AV4PRO-VGA single screen and multiscreen units are housed within
durable, metallic enclosures with all connectors situated at the rear panel. The
smart front face features the control buttons and the operation indicators.
Multiscreen versions
M U L T I S C R E E N
MODE
COMPUTER
KVM
SPK
V1
V2
USB1 USB2
MODE
www.adder.com
COMPUTER button
Press to change to
the next computer
channel.
The seven segment numeric display indicates the computer
channel that is currently active.
V4
www.adder.com
MODE button
Press to determine
which peripherals
should be switched
to another computer
channel (will occur
when the COMPUTER
button is pressed.
Indicators
The four indicators (KVM, SPK, USB1, USB2) show which
peripherals are switched to the current computer channel OR
(as you begin pressing the MODE button) the peripherals that
will be switched during the next press(es) of the COMPUTER
button.
V3
Extra indicators
As well as the indicators shown on the single screen version,
the multiscreen units also include four indicators, labelled V1 to
V4, which show the video channels being switched.
V4
INDOOR
USE
ONLY
INDOOR
USE
ONLY
4
USER
CONSOLE
3
2
V3
1
USB 1
V2
5V
USB 2
2.5A
OPTIONS
USB2.0
SWITCHED
V1
4
USER
CONSOLE
3
2
1
USB 1
5V
Power input
The power supply
connects here.
Computer channels
User console
Each computer connects to one
Connect VGA
of these four channels via a VGA
video, USB
video connector, a USB B-type
keyboard
connector and an audio 3.5mm
and mouse
jack input.
plus optional
speakers
to these
Options port
connectors.
This 10p10c port can separately support the following functions:
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USB1 USB2

SPK
User console
Connect up to two
USB devices to these
connectors. These ports
are switched in an
enumerated manner
(see What is True
Emulation?)
USB 2
4A
OPTIONS
USB2.0
SWITCHED
Extra video channels
In addition to all of the ports described (left) for the single
screen version, the multiscreen versions provide additional VGA
connectors to allow multiple video streams from each computer
to be switched to (up to) four video monitors.
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
KVM

COMPUTER

The Dual, Triple and Quad video screen versions use a larger
casing and provide more connectors on the rear panel.
• Remote control - external switching control via Adder RC4
remote unit, RS-232 serial link or channel switching input lines
(see Optional RC4 remote control or Channel switching by
external control for details).
• Upgrades - used to update the internal firmware when necessary
by connecting to a computer.
4
What’s in the box
AV4PRO-VGA Multiscreen units
AV4PRO-VGA-DUAL, AV4PRO-VGA-TRIPLE
or AV4PRO-VGA-QUAD
Power adapter (12.5W or 20W)
and country-specific power lead

AV4PRO-VGA unit
CD-ROM
CO
COM
MPU
PU
TETE
R
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KV
KMV
M
SPSK
M
PKUS
UB1S
BUS
1UB2
S
B2
CO
MPU
TER
V1
V1
V2
V2
MO
MD
V3
V3
SPK
USB1
U
L
T
I
S
C
R
E
E
E
N
USB2

M
OE D
MO
DE
Four self-adhesive
rubber feet
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VGA analog video cable
Part number: VSC18 (2m length)
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What you may additionally need
USB cable (type A to type B)
Part number: VSC24 (2m length)

Audio cable 2m (3.5mm stereo jacks)
Part number: VSC22
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
KV
V4
V4
AD
DE
R
4
3
Upgrade cable
Part number: VSC40
Two 19” rackmount brackets
and four screws
Part number: RMK3
RC4 remote control
plus standard 3m patch lead
Part number: RC4-8P8C
2
1
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5
There are two main mounting methods:
• The supplied four self-adhesive rubber feet
• Optional rack brackets (not Multiscreen models)
Rack brackets (not Multiscreen models)
Connections
The optional brackets (plus four screws), allow the
unit to be secured within a standard rack slot.
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
Note: Both the AV4PRO-VGA unit and
its power supply generate heat when in
operation and will become warm to the
touch. Do not enclose them or place them
in locations where air cannot circulate
to cool the equipment. Do not operate
the equipment in ambient temperatures
exceeding 40 degrees Centigrade. Do
not place the products in contact with
equipment whose surface temperature
exceeds 40 degrees Centigrade.

Mounting

Installation
IND
OO
US R
ON E
LY
5V
2.5
A
US
E
CO R
NS
OL
E
1
OP
4
NS
US
B1
U
SWSB2.0
ITC
HE
D
US
B2
3

TIO
6
Connections
Connections do not need to be carried out in the order given within this guide,
however, where possible connect the power in as a final step.
4 Video monitor(s): VGA video ports are used
throughout.
IND
OO
US R
ON E
LY
5V
2.5
Single screen units: Attach the lead from
the video monitor to the VGA connector
of the user console area.
The ports that make up the user console are where you attach the peripherals
that will be shared between the computer systems. Ensure that power is
disconnected from the unit.
A
US
E
CO R
NS
O
LE
OP
TIO
NS
To connect peripherals to the user console
1 Position your peripheral devices in the vicinity of the unit such that their
cables will easily reach.
2 Keyboard and mouse: Attach the leads from
your USB keyboard and mouse to the USB
sockets specifically labelled with keyboard and
mouse symbols. The keyboard and mouse will
operate in any of the USB sockets, however,
True Emulation is not available on sockets
labelled USB1 or USB2.
During initial power up, the AV4PRO-VGA
unit will attempt to read the EDID information
from the connected display(s). See Managing
EDID video display information for details.

From video
monitor
IND
OO
US R
E
ON
LY
IND
A
3 USB devices: Where required, attach the
leads from your USB peripherals to the USB
sockets labelled USB1 and USB2.
Note: These sockets provide
enumerated (transparent)
switching.
OP
TIO
NS
From USB keyboard and mouse
Multiscreen units: Attach
the lead from each
video monitor to a VGA
connector of the user
console area.
Note: On the rear
panel of the unit, the
connectors at each
horizontal level (V1 to V4)
will be switched through
to the user console VGA
connector which is at the
same level.
4
3
US
E
CO R
NS
O
2
LE
1
OP
TIO
NS
From video
monitors
1
IND
US
B1
U
SWSB2.0
ITC
HE
D

Note: The unit’s True Emulation
feature will read the full
characteristics of the keyboard
and mouse and will present
those to each connected
computer concurrently.
This ensures that
specialist keyboards
and mice are fully
supported.
US
E
CO R
NS
OL
E


5V

OO
US R
ON E
LY
2.5
US
B2

User console
5 Audio: Where required, connect the lead
from your speakers to the audio socket.
OO
US R
ON E
LY
5V
2.5
A
US
E
CO R
NS
O
LE
OP
TIO
NS
From USB peripherals
From speakers
7
Computer systems
V2
1
V1
US
B
US
B2
1
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32
U
SWSB2.0
ITC
HE
D
1
US
B2
From the speaker port
on the computer
Note: On the rear panel of the unit, connectors belonging to
the same channel are stacked vertically. The connectors at each
horizontal level (V1 to V4) will be switched through to the user
console VGA connector which is at the same level:
4 Single screen units: Link the video output of the computer’s graphic port to
the VGA port of the required channel on the rear of the unit.
2
1
V4
INDOOR
USE
ONLY
V3
US
B1
U
SWSB2.0
ITC
HE
V2
US
D

B1
From the USB port
on the computer
V3
2
US
U
SWSB2.0
ITC
HE
D
4

V4


To connect a computer system
1 Ensure that power is disconnected from the AV4PRO-VGA unit and the
system to be connected.
2 Use a USB cable (type-A to type-B) to link a
USB port on the computer system to the USB
port of the required channel on the rear of
2
the unit.
3 If required, use a stereo audio link cable
1
(3.5mm jacks at either end) to link the
speaker port on the computer
system to the audio port of
the required channel on the
rear of the unit.
Multiscreen units: Link the video outputs
of each computer to the VGA ports on
the rear of the unit (see note below).
B2
V1
From the video port
on the computer
4
USER
CONSOLE
3
2
1

Each computer system is connected to the AV4PRO-VGA unit using up to three
cables.
USB 1
5V
USB 2
4A
During initial power up, the AV4PRO-VGA
unit will attempt to read the EDID information
from the connected display(s). See Managing
EDID video display information for details.
USB2.0
SWITCHED
OPTIONS
Channel 4
Channel 3
Channel 2
Channel 1
8
Power in connection
Optional RC4 remote control
To connect the power supply
1 Attach the output lead from the power
adapter to the 5V socket on the rear panel
of the unit.
To connect the remote control
1 Connect either end of the supplied cable to the socket at the rear of the
RC4 remote control.
IND
OO
US R
ON E
LY
5V

The optional RC4 remote control unit (full part number: RC4-8P8C) can be used
to provide direct push button access to any channel from your desktop. The
RC4 remote control is supplied with a 3 metre cable that is used to link with the
OPTIONS port on the rear panel of the unit.
The AV4PRO-VGA unit is supplied with either a 12.5W (single screen version) or
20W (Multiscreen versions) power adapter. There is no on/off switch on the unit,
so operation begins as soon as a power adapter is connected.
2.5
A

US
E
CO R
NS
O
LE
4
OP
TIO

NS
2 Connect the IEC connector of the supplied country-specific power lead to
the socket of the power adapter.


2 Connect the other end of the cable to the OPTIONS port on the rear panel of
the unit.
US
E
CO R
NS
O
LE
4
OP
TIO
3 Connect the power lead to a nearby main supply socket.
Note: Both the unit and its power supply generate heat when in operation and
will become warm to the touch. Do not enclose them or place them in locations
where air cannot circulate to cool the equipment. Do not operate the equipment
in ambient temperatures exceeding 40 degrees Centigrade. Do not place the
products in contact with equipment whose surface temperature exceeds 40
degrees Centigrade.

NS
9
10
OPTIONS
8p8c
1
2
3
4
5
6
7
8
10p10c
Signal
1
2
3
4
5
6
7
8
9
10
Channel select input 1
5VDC power output (100mA max)
GND reference for all signals
RS232 (RXD) data receive
RS232 auxiliary data transmit (reserved)
RS232 auxiliary data receive (reserved)
RS232 (TXD) data transmit
Channel select input 2
Channel select input 3
Channel select input 4
To connect a computer or device for remote control
1 Insert the 8p8c or 10p10c connector of the cable to the OPTIONS port on the
rear panel of the unit.
US
E
CO R
NS
O
LE
4
OP
TIO
NS
2 Connect the other end of the cable to a vacant serial port on the computer
or to the output of the switching device.
Serial port channel selection codes
ASCII
Character HexDecimal
• Channel 1: ‘1’
0x31
49
• Channel 2: ‘2’
0x32
50
• Channel 3: ‘3’
0x33
51
• Channel 4: ‘4’
0x34
52
Note: As each channel is chosen using the above RS-232 commands, the
peripherals that will be transferred are determined by the current setting of the
switching mode.

1
Serial port parameter settings
Ensure that the chosen serial port is configured to the following:
• Baud rate: To match setting of
option in the Configuration menu
• Data bits: 8
• Stop bit: 1
• Parity:
None

The OPTIONS port can accept either 8p8c or 10p10c connectors, as required.
Where the external control is via RS-232 signal, ensure that the configuration
menu option
is set to
or
to enable RS-232 control.

OPTIONS port pinout
Control by RS-232 serial
Control by channel select input lines
Where the external control is via the four channel select input lines of the
OPTIONS port (see pin out opposite), ensure that the configuration menu option
is set to
to enable the input lines.
The four input lines are suitable for connection to dry contacts or open collector
style outputs. Connecting an input line to GND will cause the AV4PRO-VGA to
switch all of its functions to the selected channel:
•
•
•
•
Channel 1: Channel 2: Channel 3: Channel 4: Channel select input 1 low
Channel select input 2 low
Channel select input 3 low
Channel select input 4 low


The OPTIONS port featured on every AV4PRO-VGA allows external control of
the current channel either by the optional RC4 controller, commands sent via
RS-232 serial input or by switching one of the four channel select input lines. For
more details about the necessary RS-232 serial cable, see Appendix 2.

Channel switching by external control
If the input line is held low then all other switching requests by other means will
be ignored until the line returns to a high (open) state.
If more than one logic input is low (closed) then the lower channel number takes
priority.
Note: The input lines have only limited protection against over voltage.
10
INDOOR
USE
ONLY
Slave AV4PRO-VGA
4
USER
CONSOLE
3
2
1
USB 1
5V
USB 2
2.5A
USB2.0
SWITCHED
OPTIONS
INDOOR
USE
ONLY
4
USER
CONSOLE
3
2
1
USB 1
5V
OPTIONS
USB2.0
SWITCHED



USB 2
2.5A
Master AV4PRO-VGA
Slave
monitor

Serial
synchronisation
cable
Master
monitor
Computers fitted
with multiple
video heads

AV4PRO-VGA units can be connected together so that they operate
in a synchronised manner. Thus, two AV4PRO-VGA units can be
made to switch two video heads in a similar manner to an AVPROVGA-DUAL. Additionally, two AVPRO-VGA-DUAL units could be
made to resemble an AVPRO-VGA-QUAD, while two AVPRO-VGAQUAD units could be combined in order to switch up to eight video
heads simultaneously.
Whenever an AV4PRO-VGA channel is switched, it sends an RS232
command out on its serial interface (marked OPTIONS on the rear
panel). An AV4PRO-VGA will switch its channel if it receives the
same command on its serial interface. Consequently, by linking the
serial interfaces, a master unit may be made to automatically switch
one or more slave units as shown in the diagram.
It should be noted that the synchronisation cable deliberately does
not have the transmit pin of the Slave End connector linked to the
receive pin of the Master End connector. To do so would cause the
Slave unit to be able to switch the Master unit. This would setup
an endless cyclical switching sequence that would prevent the
AV4PRO-VGA devices from operating correctly. For more details
about the serial synchronisation cables, see Appendix 2.

Synchronising multiple units
11
Managing EDID video display information
You can refresh the EDID information from the connected monitor(s)
without the need to power cycle the AV4PRO-VGA.
To refresh EDID information during use
1 Enter the Configuration menu.
2Press
to enter the Functions menu
EDID Emulation
The AV4PRO-VGA units use our EDID Emulation feature to ensure that the
collected EDID information (up to two pages) is correctly supplied to every
connected computer, whether it is currently selected or not:
V2
V1
4
3
2
4Press
and then
to exit the menu.
1
USB 1
5V
You can choose to prevent the unit from interrogating the video
display(s) during startup. When you invoke this option, the unit will
only use the EDID information that it has already stored and pass this
on to the connected computers. To revert to interrogating the video
display, use the F 2 function discussed above.
To use the stored EDID information at the power up
1 Enter the Configuration menu.
2Press
to enter the Functions menu
3Press
and then
.
4 Press
and then
to exit the menu.

V3
USER
CONSOLE
.

V4
INDOOR
USE
ONLY
Display
2
USB 2
4A
EDID
EDID
EDID
EDID
Computer
4
Computer
3
Computer
2
Computer
1


USB2.0
SWITCHED
OPTIONS

Display
1
and then
Using stored EDID information only
Display
4
Display
3
3Press

Refreshing EDID information during use
Whenever a AV4PRO-VGA unit is powered on (or when the option
is
selected from the configuration menu), it will interrogate the connected
monitor(s) to determine whether EDID (Extended Display Identification Data)
information is available. If EDID information is available, it will be copied and
used; otherwise a default set of data, stored within the AV4PRO-VGA, will be
substituted. You can also optionally choose to prevent the unit from seeking
new EDID information and instead rely only on stored data.
12
1 Press and hold the front panel COMPUTER button for roughly five seconds.
The display will show:
2 On the keyboard, press the letter key for the required menu section, e.g.
The display will show the pressed letter, e.g.
3 Press the number of the required setting, e.g.
The display will show the pressed number, e.g.
4Press
to accept the setting and return to the main menu section.
The display will show:
5 You can now continue with your next configuration change (go to step 2),
or exit from the configuration menu (see below).
To exit the configuration menu and save changes
• Press
and then press
to exit and save changes.
To exit the configuration menu without saving
• Press either of the front panel buttons. Enter the Options port behaviour menu
Channel switching via RS-232 serial control (using the baud rate set
by the ‘B’ option). Contact switching via the Options port disabled. (d)
Channel switching via RC4 remote. Contact switching disabled.
As per
but with contact switching enabled.
Set a new password for use with the lock mode
Enter the Switch Mode menu
All (default)
(default)
or (d) denote
KVM + Speaker
the default settings
KVM only
for each group of
Speaker only
options.
USB1 only
USB2 only
Enter the Autoscan Time Delay menu
Autoscan disabled
15 seconds
2 seconds
30 seconds
5 seconds (default)
1 minute
7 seconds
5 minutes
Enter the User Preferences menu
Enable mouse switching (default)
Disable mouse switching
Cycle all ports (when using ‘Hotkey + Tab’ or ‘Autoscan’) (default)
Cycle only active ports (when using ‘Hotkey + Tab’ or ‘Autoscan’)


To use the configuration menu
During normal use, the seven segment display on the front panel shows the
number of the currently selected computer channel. From this condition, enter
configuration mode as follows:

The configuration mode allows you to determine numerous aspects of the
AV4PRO-VGA unit capabilities.


Using the configuration menu
Enter the OPTIONS port Baud rate menu
You can press
1200 (default)
38400
at any point to exit
2400
57600
from an option and
9600
115200
return to the main
19200
menu ( ) section.
Enter the Functions menu
Show current firmware version
Refresh EDID information from the connected video display (default)
Use the stored EDID at startup, do not interrogate the video display
Reset configuration to factory defaults ( is displayed momentarily)
Enter the Hotkey menu
Ctrl + Alt (default)
Alt
Ctrl + Shift
Left Ctrl + Alt
Alt + Shift
Right Ctrl + Alt
Right Alt
Hotkeys disabled

Configuration
13
General configuration
OPTIONS port speed
You can determine how the OPTIONS port responds to channel control inputs.
You can enable or disable mouse switching to suit your installation requirements.
To enable/disable mouse switching
1 Enter the Configuration menu.
2Press
to enter the User Preferences menu and then press either:
to Enable mouse switching
to Disable mouse switching
3Press
to accept the setting and return to the main menu section.
4Press
and then
OPTIONS port channel control behaviour
to exit the menu and save changes.
To define the OPTIONS port behaviour
1 Enter the Configuration menu.
2Press
to enter the Options port menu and then press either:
to allow channel switching commands to be received via RS-232 serial
signal through the OPTIONS port (see Appendix 2 for cable pin-out
details and Channel switching by external control for command
details). The baud rate currently set by the
option will be used for the
port. Switching commands via the four channel select inputs within the
OPTIONS port connector are disabled in this mode. Use option
if you
wish to enable the channel select inputs in addition to RS-232 control.
to allow channel switching commands to be received from the optional
RC4 remote control (see Optional RC4 control for connection details).
The baud rate set by the
option is ignored and the rate used by the
RC4 is automatically imposed. Switching commands via the four channel
select inputs within the OPTIONS port connector are disabled in this mode.
enables channel switching via RS-232 as per option . However, in this
mode the four channel select inputs are also enabled.
3Press
4Press
to accept the setting and return to the main menu section.
and then
to exit the menu and save changes.


Mouse switching
To change the OPTIONS port speed
1 Enter the Configuration menu.
2Press
to enter the Baud rate menu and then press either:
to choose 38400
to choose 1200
to choose 57600
to
choose
2400
to choose 115200
to choose 9600
to choose 19200
3Press
to accept the setting and return to the main menu section.
4Press
and then
to exit the menu and save changes.

To change the hotkeys
1 Enter the Configuration menu.
2Press
to enter the Hotkey menu and then press either:
to choose Alt
to choose Ctrl + Alt
to choose Left Ctrl + Alt
to
choose
Ctrl
+
Shift
to choose Right Ctrl + Alt
to choose Alt + Shift
to disable the Hotkeys
to
choose
Right
Alt
3Press
to accept the setting and return to the main menu section.
4Press
and then
to exit the menu and save changes.
You can change the speed of the OPTIONS serial port.


AV4PRO-VGA units use
and
as their standard hotkeys. These can be
changed if they clash with other software or hardware within the installation.

Changing hotkeys
continued
14
Miscellaneous functions
4Press
and then
to exit the menu and save changes.
.
4 Press
and then
to exit the menu and save changes.
To use the stored EDID information at the power up
When you engage this mode, the unit will not interrogate the video display
during startup and will instead use the data that are stored. To revert to
interrogating the video display, use the F 2 function discussed above.
1 Enter the Configuration menu.
2Press
to enter the Functions menu
3Press
and then
.
4 Press
and then
to exit the menu and save changes.
To reset configuration to factory defaults
1 Enter the Configuration menu.
2Press
to enter the Functions menu
3Press
and then
. The display will show
4 Press
and then
to exit the menu and save changes.
momentarily.
To show the current firmware version
1 Enter the Configuration menu.
2Press
to enter the Functions menu
3Press
and then
.
The display will blank for a short while and then the major number of the
firmware revision will be shown. The display will blank again and then show
the first digit of the minor number. Following another blank, the second
digit of the minor number will be displayed. e.g. <blank> 1 <blank> 0
<blank> 2 <blank> equals v1.02
4 Press
and then
to exit the menu and save changes.
To set a new password
1 Enter the Configuration menu.
2Press
and then
. The display will show
3 Enter a new password and then
4 Press
and then

and then

3Press

To set the default switching mode
1 Enter the Configuration menu.
2Press
to enter the Switch Mode menu and then press either:
to select All (default)
to select KVM and speaker
to select KVM only
to select Speaker only
to select USB1 only
to select USB2 only
3Press
to accept the setting and return to the main menu section.
To refresh EDID information from the monitor
1 Enter the Configuration menu.
2Press
to enter the Functions menu


Using the configuration menu, you can define a default switching mode.
The switching mode determines which peripherals (KVM, USB1, USB2 and/or
speakers) should be moved to the next computer when it is selected using any
of the standard methods. Regardless of the default switching mode set here,
during use you can always change the mode using either the MODE button (on
the front panel) or using the additional hotkey press combinations.
Note: Of the external switching methods, the RC4 remote and the RS-232 serial
signal inputs will switch the peripherals as defined by the currently selected
switching mode. However, switching control initiated by the channel select input
lines will always switch all of the peripherals to the chosen channel regardless of
the switching mode.

Switching mode
. See To lock access to the computers.
to exit the menu and save changes.
15
Performing upgrades

To use the KVM Firmware Uploader utility
1 - Obtain and run the KVM Firmware Uploader.
Download the latest AV4PRO-VGA unit KVM Firmware Uploader from
the Adder Technology website and install it on a Windows-based upgrade
computer that will be connected to the AV4PRO-VGA unit. The files
are supplied as a compressed ZIP file. Decompress the ZIP file with an
appropriate tool such as WinZip (www.winzip.com) and copy all contained
files to the same folder on the upgrade computer.

2 - Power off the AV4PRO-VGA unit
Remove the power supply plug from the rear panel of the unit.
3 - Connect the upgrade computer to the AV4PRO-VGA unit
Connect the serial port of the upgrade computer to the OPTIONS port on the
rear panel of the unit using the optional upgrade cable.
US
E
CO R
NS
O
LE
4
OP
TIO
NS
There is no need to adjust the computer’s serial port
settings as the application will do this automatically.

5 - Run the KVM Firmware Uploader utility
From that folder, select the KVMUploader icon to run the upgrade utility.
The KVM Firmware Uploader dialog will be displayed:
6 - Query the AV4PRO-VGA unit
Click the Query Unit button to confirm that communication is possible with
the AV4PRO-VGA unit and to establish its firmware details. If successful, the
‘Unit connected’ field should show the name of the AV4PRO-VGA unit and
the current firmware will also be listed.
If the application cannot contact the AV4PRO-VGA unit, re-check the
connection cable and click the Advanced... button to check that the correct
serial port is being used. Change the serial port within the Advanced...
section, if necessary.
continued


Items required to perform an upgrade
• Optional upgrade cable (see Appendix 2 for pin-out specifications).
• A Windows-based upgrade computer with an RS232 serial port.
• The latest version of the KVM Firmware Uploader and firmware files for the
AV4PRO-VGA unit - available from the Technical Support > Updates section
of the Adder Technology website (www.adder.com).
4 - Invoke upgrade mode
While powering on or when already powered: Press and hold the
COMPUTER and MODE buttons (for up to ten seconds) until the numeric
indicator shows ‘ ’. 
The AV4PRO-VGA unit is fully upgradeable via flash upgrade. Such upgrades
require a Windows-based computer system to be linked via the OPTIONS port.
16
8 - Commence the upgrade
To begin the upgrade process, click the Upload Now button. The progress
will be shown within the dialog. Should you decide not to continue with
the upload at any stage, click the Abort button; response to this is usually
immediate, however, during an erase command, the upload will not be
aborted until the erase is complete (this may take a few seconds).
9 - Cycle the power
Disconnect the power. When the power is re-applied the AV4PRO-VGA unit
will operate using the new firmware.



Check also that
the ‘New firmware
version’ is greater
than the ‘Current
firmware version’.


Check that the
‘Intended Target
Units’ field
matches the ‘Unit
Connected’ field.
Issues to consider when performing flash upgrades
The upgrade program rewrites the internal firmware code. If the upgrade
process is interrupted then the unit will have invalid code and will not be able
to operate. It is therefore good practice to ensure that the upgrade process
is always fully completed. A partial or failed upgrade may be rectified by
performing another upgrade.
WARNING: Running faulty or partially upgraded code may have unpredictable
results and may damage your AV4PRO-VGA unit or computing equipment.

7 - Select the upgrade file to be used
From the main KVM Firmware Uploader dialog, click the Browse... button
and select the upgrade file:
AV4Pro_xxx.txt
where xxx is the firmware version.
The upgrade file details will be displayed within the dialog.
IMPORTANT: Check that the ‘Intended Target Units’ field matches the
‘Unit Connected’ field. If these fields do not match then you may have an
incorrect upgrade file, check with Adder Technology Ltd before proceeding.
Check also that the ‘New firmware version’ is greater than the ‘Current
firmware version’.
17
Indicates the number
of the currently
selected computer
Use this button to
choose the next
required computer
COMPUTER
The KVM, SPK, USB1, and USB2 indicators show which
peripherals are switched to the current computer
channel OR (as you begin pressing the MODE button)
the peripherals that will be switched during the next
press(es) of the COMPUTER button.
KVM
SPK
V1
V2
USB1 USB2
V3
MODE
Use this button
to choose which
peripherals will
be switched
V4

The front panel allows you to determine how the various peripherals are
switched to one or more computer channels.
1 Optional: If you need to selectively switch some of your peripherals, press
the MODE button repeatedly to change the switching mode:
KVM SPK USB1 USB2
MODE
Will switch all peripherals together
MODE
Will switch keyboard, video, mouse and speakers
MODE
Will switch only the keyboard, video and mouse
MODE
Will switch only the speakers
MODE
Will switch only USB peripheral 1

Multiscreen models only - The V1 to V4 indicators show which
video monitors are switched to the current computer channel.


There are four main ways to switch the common peripherals to specific
computer channels:
• Using the front panel controls 
• Using hotkeys
• Using mouse button presses
• Using external switching control (RC4 remote, RS-232 or input lines)
To select a computer using the front panel
Will switch only USB peripheral 2
Note: If an indicator flashes, it signifies that the respective peripheral is
currently switched to another computer channel.
2 Press the COMPUTER button repeatedly to select the required computer
channel.

Selecting a computer

Operation
18
2 While still holding
and
, press the number key of the required
channel address (or the TAB key), then release all of the keys.
Note: The numbers on your keyboard’s numeric keypad are not valid, use
only the numeral keys above the QWERTY section.
The ports (KVM, audio and/or USB) that are switched using this method
depend upon the switching mode that is currently set using the front panel
buttons.
The range of standard hotkey combinations are as follows:
Note: If your hotkeys have been changed, substitute them for
the examples given here.
and
Selects channel 1
Selects channel 2
Selects channel 3
Selects channel 4
Isolates the user console from all channels
in
Selects the next channel (see note )
What are hotkeys?
The
and
keys when pressed in combination are called ‘hotkeys’ and
they signal to the AV4PRO-VGA unit that you wish to control it, rather than
the computer. However, if these particular hotkeys clash with another device
or program, you can change them to a different combination within the
Configuration menu.
1 Simultaneously press and hold
and
2 Press and release a command key:
.
to switch all peripherals
to switch only the keyboard, video and mouse
to switch only the speakers
to switch only USB1 and USB2
3 Press and release the required channel number (
above the QWERTY section).
to
using only the keys
4Release
and
.
The appropriate peripherals will change to the chosen channel.
Note: Regardless of which peripherals were switched, the front panel
indicators will continue to show the switching mode that was last
determined using the front panel controls.
Choosing which computers are accessed when using hot keys + tab
The computer channels that are visited when you use the hot keys + tab (or
mouse buttons/autoscan) are determined by a setting within the Configuration
menu:
1 Enter the Configuration menu.
2Press
and then press either:
to choose Cycle all ports, or
to choose Cycle only active ports
3Press
to accept the setting and return to the main menu section.
4Press
and then

(or other hotkeys, if altered).

and


1 Simultaneously press and hold
Additional hotkey press combinations
In addition to the standard hotkey press combinations (shown left), you can also
add additional keypresses in order to determine which peripherals are switched:

Using hotkey combinations, you can quickly switch the keyboard, video
monitor(s), mouse and speakers and USB peripherals to any computer channel.
There are two mains ways to use hotkeys: Standard and Additional.
Standard hotkey press combinations
The standard hotkey press combinations allow you to change channels with the
minimum of keypresses:

To select a computer using hotkeys
to exit the menu and save changes.
19
To select a computer using the mouse buttons
to choose Cycle only active ports
3Press
to accept the setting and return to the main menu section.
4Press
and then
to exit the menu and save changes.


2Press
and then press either:
to choose Cycle all ports, or


Choosing which computers are accessed when using mouse buttons
The computer channels that are visited when you use the mouse buttons (or
hotkeys + tab/autoscan) are determined by a setting within the Configuration
menu:
1 Enter the Configuration menu.

To select a computer using the mouse buttons
1 Hold down the middle button (or scroll wheel) of the mouse.
2 Click the left mouse button to increment the channel number or click the
right mouse button to decrement the channel. When the correct channel is
reached, release the middle button.
When using this method of switching:
• The computer channels that are visited depend upon the configuration
menu setting (see note ).
• The ports (KVM, audio and/or USB) that are switched using this method
depend upon the switching mode that is currently set using the front
panel buttons.

Using the mouse buttons, you can quickly switch the keyboard, mouse, video
monitor(s), speakers and/or USB peripherals to any computer channel.
Note: These procedures work only with three-button or IntelliMouse devices and
only if the ‘Mouse Switching’ option has been enabled.
20
To lock access to the computers
When privacy is required, you can lock access to the connected computers via
the unit.
To lock the unit
2 While still holding
and
, press .
The display will show (providing a valid password has been previously set).
You will not be able to access any computers until the password is correctly
entered.
To unlock the unit
• When prompted, enter the correct password and press
.
To set a new password
1 Enter the Configuration menu.
. The display will show
3 Enter a new password and then
.
The password is not case sensitive and can be any combination of key
strokes, including the function keys, but excluding the Num Lock, Caps Lock,
Scroll Lock and
keys. If your keyboard has special media keys, these also
cannot be used as part of the password.
When you have typed in your password, press
to store it. Don’t worry if
you type the password incorrectly, you can always re-enter configure mode
and set the password again.
4 Press
and then
to exit the menu and save changes.
To cancel the password
1 Enter the Configuration menu.
2Press
3Press
4 Press
and then
. The display will show
to remove the existing password.
and then


and then
to exit the menu and save changes.
If you forget the password
To clear an existing password: Connect the OPTIONS port of the unit to the serial
port of a computer and transmit the text clrpwd to the unit.

2Press

(or other hotkeys, if altered).

and

1 Simultaneously press and hold
21
Autoscanning
on the keyboard.
to accept the setting and return to the main menu section.
4Press
and then
to exit the menu and save changes.
Note: The setting of this option also affects which computers are visited
when the channel is changed using the mouse buttons or hot key + tab.
To select an autoscan period
1 Enter the Configuration menu.
2Press
and then press either:
to choose Autoscan disabled,
to choose 2 seconds,

3Press

2Press
and then press either:
• 7 to choose Cycle all ports, or
• 8 to choose Cycle only active ports
to choose 7 seconds,
to choose 15 seconds,
to choose 30 seconds,
to choose 1 minute, or

to choose 5 seconds,
to choose 5 minutes.
3Press
4Press
to accept the setting and return to the main menu section.
and then
to exit the menu and save changes.
To start autoscanning
• On the keyboard, press
.
Notes:
During autoscanning, mouse switching, hot key + tab and interactivity with the
computers are all disabled.
During autoscanning, only the KVM and speaker ports are switched to each
visited computer channel, the two USB device ports remain connected to their
currently selected channels.
To stop autoscanning
You can stop the autoscanning process in either of the following ways:
• Press the COMPUTER button on the front panel, or
• Select a specific channel using the hot keys + channel number. 

To start autoscanning mode, press
To select an autoscan mode
1 Enter the Configuration menu.

When enabled, the autoscan mode switches between the connected computers
in sequence. This is useful to allow you to sample activity among the connected
computers.
Two scanning modes are available:
• Cycle all ports – This mode visits, in turn, to each connected computer. This
mode should be used with care due to the reasons given in the warning
below. To prepare for this autoscan mode, choose
within the
configuration menu (see right).
• Cycle only active ports – Only computer ports where an active computer
is detected will be viewed. This mode avoids blank screens from being
displayed and helps to prevent the viewing monitor from entering a powerdown state on every scan cycle.
Additionally, when this mode is selected, whenever you use either the
mouse buttons or hot keys + tab to change channels, only computers that
are active will be visited. To prepare for this autoscan mode, choose
within the configuration menu (see right).
WARNING: Many monitors are fitted with automatic power saving
relays that switch off after a few seconds when connected to an
inactive computer. If you are using such a monitor, do not use the
‘Cycle all ports’ mode. Continual switching on and off of the monitor’s
relay will eventually damage the monitor.
Seven autoscan periods are available (the time spent viewing each computer)
ranging from 2 seconds to 5 minutes. To prepare the autoscan period, choose
and then
to
within the configuration menu (see right).
22
Further information
• Technical support – www.adder.com/contact-support-form
For technical support, use the contact form in the Support section of the
adder.com website - your regional office will then get in contact with you.

• Adder Forum – forum.adder.com
Use our forum to access FAQs and discussions.

• Online solutions and updates – www.adder.com/support
Check the Support section of the adder.com website for the latest solutions
and firmware updates.


If you are still experiencing problems after checking the information contained
within this guide, then we provide a number of other solutions:

Getting assistance

This chapter contains a variety of information, including the following:
• Getting assistance - see right
• Appendix 1 – Supported video modes
• Appendix 2 – Cable pin-outs
• Safety information
• Warranty
• Radio frequency energy statements
23
VESA STD
VESA STD
VESA STD


Native/preferred timing
IBM VGA
IBM XGA2
IBM VGA
Apple Mac II
VESA
VESA
VESA
VESA
VESA
VESA
Apple Mac II
IBM
VESA
VESA
VESA
VESA
Apple Mac II
VESA STD
VESA STD
VESA STD


1024 x 768p at 60Hz 720 x 400p at 70Hz
720 x 400p at 88Hz
640 x 480p at 60Hz
640 x 480p at 67Hz
640 x 480p at 72Hz
640 x 480p at 75Hz
800 x 600p at 56Hz
800 x 600p at 60Hz
800 x 600p at 72Hz
800 x 600p at 75Hz
832 x 624p at 75Hz
1024 x 768i at 87Hz
1024 x 768p at 60Hz
1024 x 768p at 70Hz
1024 x 768p at 75Hz
1280 x 1024p at 75Hz
1152 x 870p at 75Hz
1600 x 1200p at 60Hz
1680 x 1050p at 60Hz
1360 x 765p at 60Hz
1360 x 768p at 60Hz
1440 x 900p at 60Hz
1280 x 720p at 60Hz
1920 x 1080p at 60Hz

The following digital video modes are defined within the default EDID
information held by the AV4PRO-VGA units. This information is used only if
no new EDID information is made available by the attached video monitor(s).
The AV4PRO-VGA units support video resolutions and refresh rates in excess of
those listed here.

Appendix 1 – Default EDID video modes
24
Appendix 2 – Cable pin-outs
SLAVE end
8p8c connector
TXD
6
2
RXD
TXD
6
3
RXD
RXD
3
3
TXD
GND
2
2
GND
GND
2
5
GND
Serial remote control and flash upgrade cable (10p10c)
10p10c
connector
D-Type female
9 way
Multi-head synchronisation cable (10p10c)
MASTER end
10p10c connector
SLAVE end
10p10c connector
TXD
7
2
RXD
TXD
7
4
RXD
RXD
4
3
TXD
GND
3
3
GND
GND
3
5
GND

MASTER end
8p8c connector

D-Type female
9 way


8p8c
connector
Multi-head synchronisation cable (8p8c)

Serial remote control and flash upgrade cable (8p8c)

The OPTIONS port uses a 10p10c socket which can accommodate both 10p10c
connectors as well as the much more common 8p8c connectors, which are used
on Ethernet leads and patch cables. The pin-outs are listed in this section for
both types of connector.
25



• For use in dry, oil free indoor environments only.
• Both the AV4PRO-VGA unit and its power supply generate heat when in
operation and will become warm to the touch. Do not enclose them or
place them locations where air cannot circulate to cool the equipment. Do
not operate the equipment in ambient temperatures exceeding 40 degrees
Centigrade. Do not place the products in contact with equipment whose
surface temperature exceeds 40 degrees Centigrade.
• Warning - live parts contained within power adapter.
• No user serviceable parts within power adapter - do not dismantle.
• Plug the power adapter into a socket outlet close to the module that it is
powering.
• Replace the power adapter with a manufacturer approved type only.
• Do not use the power adapter if the power adapter case becomes damaged,
cracked or broken or if you suspect that it is not operating properly.
• If you use a power extension cord with the AV4PRO-VGA unit, make sure
the total ampere rating of the devices plugged into the extension cord does
not exceed the cord’s ampere rating. Also, make sure that the total ampere
rating of all the devices plugged into the wall outlet does not exceed the
wall outlet’s ampere rating.
• Do not attempt to service the AV4PRO-VGA unit yourself.


Adder Technology Ltd warrants that this product shall be free from defects in
workmanship and materials for a period of two years from the date of original
purchase. If the product should fail to operate correctly in normal use during the
warranty period, Adder will replace or repair it free of charge. No liability can be
accepted for damage due to misuse or circumstances outside Adder’s control.
Also Adder will not be responsible for any loss, damage or injury arising directly
or indirectly from the use of this product. Adder’s total liability under the terms
of this warranty shall in all circumstances be limited to the replacement value of
this product.
If any difficulty is experienced in the installation or use of this product that you
are unable to resolve, please contact your supplier.
Safety information

Warranty
26
Radio Frequency Energy
This equipment does not exceed the class A limits for radio noise emissions from
digital apparatus set out in the radio interference regulations of the Canadian
Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant
les limites applicables aux appareils numériques de la classe A prescrites dans
le règlement sur le brouillage radioélectriques publié par le ministère des
Communications du Canada.

Canadian Department of Communications RFI statement

This equipment generates, uses and can radiate radio frequency energy
and if not installed and used properly, that is, in strict accordance with the
manufacturer’s instructions, may cause interference to radio communication.
It has been tested and found to comply with the limits for a class A computing
device in accordance with the specifications in Subpart J of part 15 of FCC rules,
which are designed to provide reasonable protection against such interference
when the equipment is operated in a commercial environment. Operation of this
equipment in a residential area may cause interference, in which case the user at
his own expense will be required to take whatever measures may be necessary
to correct the interference. Changes or modifications not expressly approved by
the manufacturer could void the user’s authority to operate the equipment.


This equipment has been tested and found to comply with the limits for a class
A computing device in accordance with the specifications in the European
standard EN55022. These limits are designed to provide reasonable protection
against harmful interference. This equipment generates, uses and can radiate
radio frequency energy and if not installed and used in accordance with the
instructions may cause harmful interference to radio or television reception.
However, there is no guarantee that harmful interference will not occur in a
particular installation. If this equipment does cause interference to radio or
television reception, which can be determined by turning the equipment on
and off, the user is encouraged to correct the interference with one or more
of the following measures: (a) Reorient or relocate the receiving antenna. (b)
Increase the separation between the equipment and the receiver. (c) Connect
the equipment to an outlet on a circuit different from that to which the receiver
is connected. (d) Consult the supplier or an experienced radio/TV technician for
help.
FCC Compliance Statement (United States)

European EMC directive 2004/108/EC

All interface cables used with this equipment must be shielded in order to
maintain compliance with radio frequency energy emission regulations and
ensure a suitably high level of immunity to electromagnetic disturbances.
27

Contact: www.adder.com/contact-details



Support: forum.adder.com

www.adder.com

Web:
Documentation by:
www.ctxd.com
© 2012 Adder Technology Limited
All trademarks are acknowledged.
Part No. MAN-AV4PRO-VGA • Release 1.1b
28
A
F
M
S
V
Assistance 23
Audio
connection 7
Autoscanning 22
Firmware
upgrade 16
Front panel
switching 18
H
Brackets
fitting 6
Host computer
connection 8
Hotkeys
changing 14
selecting computers 19
what are they? 19
Safety information 26
Selecting computers
with front panel 18
with hotkeys 19
with mouse buttons 20
Serial port
settings for control 10
Speakers
connection 7
Supplied items 5
Switching 18
by input lines 10
by RS-232 serial 10
Switching mode
setting a default 15
Video modes 24
Video port
connection 7
B
Mounting 6
Mouse
connection 7
Multiple units
synchronising 11
Multiple video head
connections 11
E
EDID information 12
default video modes 24
Emulated switching 3
Enumerated switching 3
External control 10
P
K
L
Parts
supplied and extra 5
Password
setting & entering 21
Peripherals
connecting 7
Lock the unit 21
R
Keyboard
connection 7
KVM 2
Rack mounting 6
Remote control
by computer 10,14
by RC4 unit 9
Remote wakeup 2
RS-232 serial
switching commands 10
T
Troubleshooting 23
True Emulation 2,3

Indicators 4

I
Operation 18
Options port 4
behaviour setting 14
pinout 10
speed setting 14
U
Unlock the unit 21
Upgrade
firmware 16
USB device
connection 7
USB Remote wakeup 2
USB switching
emulation 3
enumeration 3
True Emulation 2,3
User console 4


Cable pin-outs 25
Channel select input lines 10
Channel selection codes 10
Computer
connection 8
ports 4
selecting 18
Configuration 13
Connections 7
computer system 8
multiple video heads 11
user console 7
O
Warranty 26

C
W

Index
29