AdderLink X2-Series
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Remote Extenders
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Further information
Troubleshooting.........................................................................18
Getting assistance.......................................................................18
Emissions and Immunity.............................................................20

Installation....................................................................................4
Stage A - Configuration switch settings.................................4
LOCAL module switches......................................................4
REMOTE module switches..................................................5
Stage B - Mounting a module – desk or rack.........................6
Installation Advice...............................................................6
Stage C - Connections..............................................................7
Connections at the LOCAL module....................................7
Connections at the REMOTE module.................................8
Operation....................................................................................10
Power and activity indicators................................................10
General use............................................................................10
Locking and unlocking the system.......................................10

 
Installation and operation
Configuration.............................................................................11
What are hotkeys?............................................................11
Entering, using and exiting configuration mode............11
Password setting....................................................................12
Password override..................................................................12
Hot plugging and mouse restoration...................................13
Which restore setting do I use?........................................13
Microsoft and Logitech -specific mouse settings.................13
Image controls - sharpness and brightness..........................14
Skew adjustment (X2-Silver and X2-Gold only)...................15
Miscellaneous settings...........................................................17


Introduction..................................................................................2
Supplied items..............................................................................3
Special configuration


Welcome

Contents
1
Welcome
Video extension
Mouse extension
RS232 serial extension
Digital audio extension
Brightness control
Sharpness control
Skew adjustment
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Up to 300 metres separation
between the local and
remote modules via a single
Category 5, or higher, cable
PC
RS232 SERIAL
MOUSE
KEYBOARD
VIDEO
AUDIO
X2
X2
LOCAL
REMOTE
The video monitor,
mouse, keyboard,
serial device and audio
accessories* connect to
the REMOTE Extender.
PSU
A special multi-cable
simplifies the connection
of the keyboard, video,
mouse and audio ports*
to the LOCAL Extender.
*
* X2-Gold only
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
Keyboard extension

 


This table indicates the functional differences between the three variants within
the X2-Series:
X2 X2-SilverX2-Gold


Thank you for choosing one of the AdderLink X2-Series products. These
compact modules allow you to place the controlling keyboard, video monitor,
mouse and a serial device up to 300 metres (200m maximum for Gold variant)
from a computer system. The range topping X2-Gold modules also allow you to
extend your audio accessories away from your computer.
There are three variants in the X2-Series and each consists of two modules: a
local module that attaches to your computer system and a remote module to
which the peripherals are connected. The long distance link between the two
modules is made via Category 5, or higher, twisted pair cabling.
Special circuitry within the remote module allows you to make adjustments to
the sharpness and brightness settings to suit your own preferences. Additionally,
the X2-Silver and X2-Gold models also feature Skew adjustment to counteract
the effects of uneven lengths of twisted pair cables that are used to carry the
video signals.

Introduction
2
Supplied items
Optional
power supply
connection
Connection from
computer RS232
serial port
PO
WE
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Multi-cable for keyboard,
video, mouse and (X2-Gold
only) audio connections
between computer and
LOCAL module
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Power
and signal
activity
indicator
LOCAL X2 module
Power supply
connection
Connection to
RS232 serial
device
TO
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Switch bank to
determine certain
modes and
fuunctions
Serial for RS232
connection
between computer
and LOCAL module
Information wallet
containing:
Eight self-adhesive rubber feet
Safety document
Power
and signal
activity
indicator
TE
MO
RE


Connections for
microphone and
speakers
(X2-Gold only)
Connection
to LOCAL
module
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 
Multi-cable
connection from
computer
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REMOTE X2 module
Connection
to video
Connection
monitor
to keyboard
Connection
to keyboard
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Connection
to REMOTE
module


Switch bank to
determine certain
modes and
functions
Power supply
and countryspecific mains
cable
3
Installation and operation
Installation
LOCAL module switches
OFF: Normal operation
ON: Transparent mode
O
ON
N
1
OFF: Normal operation
ON: reset password mode
2
34
OFF: Normal operation
ON: Reset LOCAL module
OFF: Microphone input mode
ON: Stereo line-in mode
1
2
34
LOCAL Switch 3
OFF: Microphone input on REMOTE module. Use this setting if a standard monochannel microphone is connected to the MIC input on the REMOTE unit.
ON: Stereo line-in input on REMOTE module. Use this setting if a stereo input is
applied to the MIC input on the REMOTE unit.
LOCAL Switch 4
OFF: Normal operation.
ON: Suspend operation and reset the LOCAL module. Use this setting
momentarily to produce the same effect as removing and restoring power
if incorrect operation has occurred. Return the switch to the OFF position
to allow normal operation to continue.


ON
LOCAL Switch 2
OFF: Normal operation.
ON: Set transparent mode. Use this setting if the extender modules are to be
used with KVM switches that are not manufactured by Adder Technology.
Cascaded KVM switches often use special signals to set or identify
conditions. In transparent mode, the extender modules will pass the signals
without attempting to interpret them.

The basic operation of the LOCAL and REMOTE modules are controlled by the
banks of four switches located on the side of each module. The switches are
monitored at all times and may be changed when power is on or off (the only
exception to this rule is switch 1 of the LOCAL module which initiates slightly
different functions depending on the power state when it is switched).

 
Stage A - Configuration switch settings
LOCAL Switch 1
OFF: Normal operation.
ON: (Whilst power is applied) Places the REMOTE module into password
override mode. This allows any pre-configured passwords to be altered particularly useful when they have been lost or forgotten. Please see the
‘Password override’ section in the ‘Special configuration’ chapter.


The installation of the X2-Series extender set is straightforward and can best be
achieved in most cases by following these stages for each module:
• Stage A
Check or set the configuration switch settings
• Stage B
Mount the module
• Stage C
Connect the cables

LOCAL module switches (continued)
Note: When shipped, all switches are set in the OFF positions and this will
produce normal operation with normal microphone input (at the REMOTE
module).
4
REMOTE module switches (continued)
34
Reserved for
future use
Determines configuration
of hotkeys in conjunction
with switch 2
ON
1
2
34
Note: When shipped, all switches are set in the OFF positions and this will
produce normal operation.
REMOTE Switches 2 and 3
Switches 2 and 3 determine which two keyboard keys (when pressed in unison)
are to be designated as ‘hotkeys’. Hotkeys signal to the REMOTE module that
the next key to be pressed is a special configuration command for the module
and is not to be passed to the computer system.
2 OFF
3 OFF Hotkeys = CTRL and SHIFT
2 OFF
3 ON Hotkeys = ALT and SHIFT
2 ON
3 OFF Hotkeys = CTRL and ALT
2 ON
3 ON Hotkeys disabled
REMOTE Switch 4
This switch is reserved for future use.

OFF: Normal operation
2

1

 
O
ON
N
REMOTE Switch 1
OFF: Normal operation.


Determines configuration
of hotkeys in conjunction
with switch 3


REMOTE module switches
5
The X2-Series extender modules can be situated on a desk (or floor) or
alternatively, for larger installations, mounted within optional rack mount chassis
units.
• For correct operation, the local and remote units must have ground
connections. At the computer end, ensure that the computer or KVM switch
that the LOCAL module is connected to has a ground connection. At the
keyboard/monitor/mouse end, ensure that the REMOTE module’s power
supply is connected to a grounded power outlet. Alternatively, a ground
connection will be made via the monitor, if the monitor is itself grounded.
• Try to avoid laying the interconnect cable alongside power cables where
possible.
1
2
34
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ON


Rack mount
Note: The module switches are not accessible once it is inserted into the rack,
therefore, check all settings before insertion.
1 Place the rack securing plate (available as a separate kit) onto the front of
the module and secure it with the two countersunk
screws.
2 Orient the module on its side so that its labelled
face is the correct way up and the securing plate is
facing away from the rack.
3 Slide the module into the required rack position. The
rectangular cut-out in the front upper lip of the rack
allows the two screws on the module’s upper edge to
slide through.
4 The rack mount chassis has a series of holes in its
floor that are spaced to accommodate the two
screws on the module’s lower edge. Ensure that
the screws correctly locate into the two holes of the
chosen slot. The rack securing plate on the module
should now be flush with the front of the rack mount
chassis.
5 Use the third (pan-head) screw, in the top hole of the
rack securing plate to fasten the module to the rack.

 

Desk mount
Apply the supplied self-adhesive
rubber feet to the underside of the
module(s).
Installation Advice

Stage B - Mounting a module – desk or rack
6
Monitor (video)
Keyboard
Mouse
or
Blue
Twisted pair connection
The link between the LOCAL and REMOTE modules is made via twisted pair
cable, specified to Category 5 or higher. Ensure that the total twisted pair cable
length (including patch boxes) does not exceed 300 metres for the Silver variant
and 200 metres for the Gold variant.
1 Insert the connector from
the twisted pair cable link
into the socket marked
‘TO REMOTE’.
Purple
Mid green
Speaker
or
SPK Light green
Microphone
or MIC Pink (or maroon)
twisted pair
cable connector
LOCAL
Optional power connection
The LOCAL module usually derives its power from the keyboard connection of
the host system. If the keyboard connection will not be used then you will need
to use an external power supply of the same type used for the REMOTE module.
These are available from your Adder supplier.

Male connector
of the serial cable
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 
Multi-cable connection
Most of the connections between the computer system and the LOCAL module
are made via the supplied multi-cable. This has a single connection to the
module, is two metres in length and splits out to the keyboard, video, mouse
and (for the X2-Gold) microphone and speaker ports of the system.
1 Attach the
supplied multicable to the 25way socket at the
end of the LOCAL
module.
2 At the other end
of the multiLOCAL
cable, attach
the keyboard,
mouse and video,
Multi-cable main
connector
(plus optionally
on X2-Gold, the
microphone and speaker) connectors to the appropriate sockets at the rear
of the computer system. On most systems the appropriate ports should be
labelled and colour coded in a similar way to the cable connectors:


Connections at the LOCAL module
Serial cable connection
The X2-Series extender modules offer the option to attach an RS232 serial
device (such as a touch screen input) via the remote link. The link supports
software or hardware handshaking up to a maximum baud rate of 56Kb/s. To
make the serial connection between the LOCAL module and your computer
system, use the supplied serial link cable.
1 Attach male connector
of the serial link cable
to the 9 pin port on the
LOCAL module,
labelled
.
2 Connect the other end
of the serial link cable
to the appropriate serial
LOCAL
port of the computer
system.


The naming of the LOCAL and REMOTE modules relate to their proximity to the
computer system. Hence, the LOCAL module connects directly to the system,
while the REMOTE is at the other end of the twisted pair cable and attaches to
the keyboard, mouse, etc.

Stage C - Connections
7

REMOTE
Power
supply
connection
Power supply connection
1 Insert the IEC connector of the supplied power lead into the corresponding
socket of the power supply. Connect the other end of the power lead to a
nearby mains socket.
IEC power connector

 
.


Twisted pair, power and serial connections
1 Insert the connector
from the twisted pair
cable link into the
socket marked ‘TO
LOCAL’.
2 Attach the output
connector of the
Twisted pair
power supply to the connection
socket at the front
edge of the REMOTE
module labelled
POWER.
3 If a serial connection is
Connection
to be used, attach the
from serial
device
lead from your serial
device to the 9 way
male connector on the REMOTE module labelled


Keyboard, video and mouse connections
The connections to the keyboard, video monitor and mouse are all made to the
sockets at one end of the REMOTE module.
1 Attach the lead from
the monitor to the
blue D-type socket
labelled
on the
REMOTE module.
2 Connect the
keyboard lead to
the purple mini-DIN
socket labelled
REMOTE
on the REMOTE
module.
Connection
3 Insert the keyboard
from video
lead into the green
Connection
monitor
Connection
from mouse
from
mini-DIN socket
keyboard
labelled on the
REMOTE module.

Connections at the REMOTE module
8
ON
1
2
34

Note: When the X2-Gold REMOTE module
is rack mounted, the audio connections
must be made after the module has been
fixed in place. Access is required to the
rear and above the rack. Remember to
remove the audio connections before
attempting to slide out the REMOTE
module.

Audio connections (X2-Gold only)
On the X2-Gold REMOTE module, audio connections are available at the two
3.5” jack sockets mounted on the side (same side as the switch bank). Note:
The microphone input (labelled
) has a dual function whereby it can either
support a mono-channel microphone or alternatively receive stereo line input.
Switch 3 on the LOCAL module controls the setting of this port: LOCAL switch 3
OFF - microphone, LOCAL switch 3 ON - stereo line in.
1 Connect the microphone
(or stereo line input) plug to
the REMOTE module socket
labelled
.
Note: Ensure that the
setting of switch 3 on the
LOCAL module matches the
input to this socket:
Microphone (or
stereo line-in)
OFF-microphone;
connection
ON-stereo line input).
2 Connect the speaker plug
to the socket labelled
.
Speaker
ON
1





 
connection
9
2
3
4
Operation
REMOTE
General use
In use, the X2-Series extender modules should be transparent - the system and
its peripherals should operate exactly as normal, the only difference being that
they are now up to 300 metres apart.
In some installations, you may see some ‘shadows’ to the right of high contrast
screen characters. This can be caused by an incorrectly selected sharpness setting
and it may be necessary to make adjustments to correct this. Please see ‘Image
controls - sharpness and brightness’ in the ‘Special configuration’ section.
To unlock the system
1 Enter the correct password and press
.
Note: Passwords are NOT case sensitive.
Note: If an invalid password has been entered and the keyboard indicators
are not flashing as described above, press
to clear the incorrect attempt.
2 If the correct password is entered, the screen will be restored and normal
operation can continue.
To enable the video
Simultaneously press the currently configured hotkeys (by default,
and
)
long with . This command will be required to restore the video if
and
along with
is used when no password has been set.
To disable the video
Simultaneously, press the currently configured hotkeys (by default,
along with .
and
)

Activity/
power
indicators
To lock the system
1 First set a password. For further details, please refer to the ‘Password setting’
section in the ‘Special configuration’ chapter.
2 Simultaneously press the currently configured hotkeys (by default,
and
) along with .
The screen will go blank and the three keyboard
l
rol
ScLock
indicators will begin alternately flashing between the
ps
CaLock
‘Num Lock’ and ‘Scroll Lock’, and ‘Caps Lock’. This
m
NuLock
sequence indicates that a password is required.

 
LOCAL


In situations where the computer system (and the LOCAL module) can be locked
away the X2-Series extender modules offer a viable security system to deter
unauthorised use. Once a password has been set, a simple key sequence allows
the system to be quickly and securely detached from its peripherals. Only the
correct password will reconnect the remote and local modules.


On the front panel of both modules
are small recessed indicators which
provide confirmation of power and
activity, as follows:
• Constant red - power applied, no
communication activity.
• Flickering red - power applied,
mouse or keyboard activity
occuring.
• Slow flashing red - module is in
flash upgrade mode.
Note: Both modules contain internal
automatic cut-out fuses to protect
against power surges. To reset,
remove power (or, for the LOCAL
module, the keyboard connection)
from the module for one second and
then reconnect.

Locking and unlocking the system
Power and activity indicators
10
Special configuration
Configuration
Entering, using and exiting configuration mode
2 OFF
3 ON Hotkeys =
and
2 ON
3 OFF Hotkeys =
and
2 ON
3 ON Hotkeys disabled
3 Press the number of the required configuration
option, for instance .
The ‘Scroll Lock’ indicator will extinguish, leaving
the ‘Num Lock’ and ‘Caps Lock’ indicators lit.

l
rol
ScLock
m
NuLock
ps
CaLock
l
rol
ScLock
m
NuLock
4Press
to confirm your option.
The three keyboard indicators (‘Num Lock’, ‘Caps
Lock’ and ‘Scroll Lock’) will now begin to flash in
sequence again.
To exit from configuration mode:
1 Within configuration mode, the three keyboard indicators should be flashing
in sequence to show that the module is ready to receive a new command.
2Press
.
The three indicators will return to their normal states.

ps
CaLock

 
Hotkeys are two normal keyboard keys that, when pressed simultaneously with
a third key, signal to the X2-Series modules that you are sending a message
specifically to them and not to the computer. The hotkeys are ordinarily
and
, while a third keypress determines what you want the modules to do.
If the standard
and
hotkeys are also needed for computer tasks, you
can change them for another combination using switches 2 and 3 on the
REMOTE module:
2 OFF
3 OFF Hotkeys =
and
(default setting)
2 Press the first letter of the required configuration
option, for instance .
All three keyboard indicators will illuminate
continuously.


What are hotkeys?
To enter and use configuration mode:
1 Simultaneously press the currently configured
hotkeys (by default,
and
) along with
.
The three keyboard indicators (‘Num Lock’, ‘Caps
Lock’ and ‘Scroll Lock’) will now begin to flash in
sequence to show that you are in configuration
mode.


You can alter the way that the X2-Series modules operate to suit your
requirements. This is done using the Configuration mode and you can affect the
following settings:
• Password setting – allows you to lock the remote module to prevent
unauthorised system access.
• Mouse restoration and settings – allows you to restore mouse operation and
also to change the mouse type.
• Image controls - sharpness & brightness – allows you to manually adjust the
video image to ensure that it is crisp and bright.
• Skew adjustment (X2-Silver and X2-Gold only) – allows you to manually
compensate for possible video errors introduced by long, uneven cable
connections.
• Miscellaneous functions – report firmware version and restore settings.
11

To override the REMOTE password
1 Remove power from the REMOTE module.
2 With power to the system and LOCAL module still applied, change LOCAL
switch 1 to the ON position.
3 Re-apply power to the REMOTE module. The REMOTE module will go
directly into configuration mode so that the old password can be cleared
and a new one set.
• To clear a password: (within configuration mode) Press
followed by
and followed by
again.
• You can now enter a new password using the procedure outlined
in steps 2 to 5 of the ‘Password setting’ section, or press
to exit
configuration mode.
4 Return LOCAL switch 1 to its OFF position.
Note: If switch 1 remains ON, then the REMOTE module will enter
configuration mode whenever it is repowered and will not operate normally.

This mode allows you to override the password that has been set at the REMOTE
module and place it into configuration mode so that a new one may be set. This
feature is particularly useful when passwords have been lost or forgotten.

 
To set a password
1 Simultaneously, press the hotkeys (by default,
and
) along with
to enter configuration mode.
2Press
followed by
.
3 Now enter your new password, within the following constraints:
• Passwords are NOT case sensitive,
• Passwords may be any length from one character to a maximum of forty
characters,
• The following keys may NOT be used:
,
,
, or
4 When you have entered the password, press
to signal its completion.
5Press
once more to exit configuration mode.
For full details about how to lock and unlock the system using your password,
please see the ‘Locking and unlocking the system’ section in the ‘Installation and
operation’ chapter.
Password override


Password protection allows you restrict access to the system only to authorised
personnel. A password first needs to be set and then, using the keyboard
attached to the REMOTE module, a simple key sequence allows the system to be
quickly and securely detached from its peripherals.


Password setting
12
Recognising an Intellimouse-style mouse
The Intellimouse format was introduced to support, among other features, the
scroll wheel function. If your mouse has a scroll wheel, then it is likely to support
the Intellimouse format. If you have a Microsoft mouse, then it will usually state
that it is an Intellimouse on its underside label.
Recognising an Intellimouse driver
Before hot plugging your X2-Series extender modules (or afterwards using
only keyboard control), access the Windows Control Panel and select either
the Mouse option (on Windows NT, 2000 and XP) or the System option (on
Windows 95, 98, ME). Look for the name of the driver, which will usually
include the words PS/2 or Intellimouse.
Microsoft and Logitech -specific mouse settings

In certain installations some Logitech mouse drivers may lose the action of the
mouse buttons when used with the standard ‘Microsoft compatible’ signalling
protocol used between the modules. To solve this problem, select the ‘Logitech
compatible’ mouse signalling protocol.

 
The general rule is that unless both the mouse and the driver are both
Intellimouse compatible then you need to restore the mouse as ‘PS/2’.
To change mouse signalling protocols
1 Simultaneously, press the hotkeys (by default,
to enter configuration mode.
2 Enter the appropriate protocol code:
• Microsoft compatible – press
• Logitech compatible – press


Which restore setting do I use?
To restore mouse operation when hot plugging:
1 Carefully connect the X2-Series extender modules to the system and its
keyboard, mouse, monitor, audio and serial device.
2 Simultaneously, press the hotkeys (by default,
and
) along with
to enter configuration mode.
3 Enter the appropriate restore function code:
• PS/2 – press
• IntelliMouse – press
4 To exit configuration mode, press
.
5 Move the mouse a short distance and check for appropriate on-screen
cursor movement. If the mouse cursor darts erratically around the screen,
then cease moving the mouse. This is an indication that the chosen restore
function is incorrect. Try again using the other restore function.
Note: The restore functions predict the likely mouse resolution settings but
may not restore the exact speed or sensitivity settings that were originally
set.
3 To exit configuration mode, press
and
) along with
.


It is strongly recommended that you switch off the computer system before
attempting to connect it via the X2-Series extender modules. However, if this is
not possible then you need to ‘hot plug’ the X2-Series extender modules while
power is still applied to the system. There is not normally a danger of damage
to the system, however, when mouse communications are interrupted, often
they fail to reinitialise when reconnected. X2-Series extender modules provide
a feature to reinstate mouse communications once the necessary connections
have been made.
There are two main types of data formats used by current PC mice, these are
the older ‘PS/2’ format and the more recent ‘IntelliMouse® ’ format introduced
by Microsoft. These use slightly different data arrangements and it is important
to know which type was being used before you hot-plugged the X2-Series
extender modules. The previous setting depends both on the type of mouse and
the type of driver as various combinations of PS/2 and Intellimouse are possible.
Using the incorrect restore function may produce unpredictable results and
require the system to be rebooted.

Hot plugging and mouse restoration
13
Sharpness
increase
(fine)
Brightness
decrease
Sharpness:
Brightness:

Sharpness
decrease
(coarse)
Exit image
controls
and save
settings
the need for
sharpness
adjustment
If the image controls cannot provide a crisp image
If, after adjusting the image controls, the screen image remains
fuzzy or has coloured shadows you may need to use the Skew
adjustment feature (X2-Silver and X2-Gold only). Please see the
next section for details.
Sharpness
increase
(coarse)
Brightness
increase
Sharpness
decrease
(fine)
for fine adjustment,
for coarse adjustment.
There are 255 sharpness levels (one coarse step jumps 10 levels).
To autoset sharpness: Press
to make the module calculate and apply an automatic compensation level - you can use this as a starting point for your fine tuning.
Note: If the monitor goes blank and switches off (due to
oversetting the sharpness adjustment) press the
key to restore.
for adjustment. There are 255 brightness levels.
3 When no shadows are visible and the displayed images have crisp edges,
press
to exit configuration mode and permanently save all settings.
The new compensation setting will be stored, even when power is removed
or if a complete reset is initiated. The setting should not require further
changes unless the cabling arrangement is altered.

 
Restore default
sharpness and
brightness
settings


To display a suitable high contrast image
The best way to clearly view the effect of sharpness and brightness adjustments
is to display a high contrast image, with vertical edges, on the screen.
• Open a word processor, type the capital letter
‘H’, or ‘M’ and increase the point size to 72 or
higher. For best results, the background should
be white and the character should be black.
• A BLACK shadow on the right of the character
indicates UNDER compensation.
High contrast
Black or bright
• A WHITE shadow on the right of the character black character
white shadow
on white
on the right
indicates OVER compensation.
background
indicates
To use the image controls
1 Simultaneously, press the hotkeys (by default,
and
) along with
to enter configuration mode.
The three keyboard indicators (‘Num Lock’, ‘Caps
Lock’ and ‘Scroll Lock’) will now begin to flash in
sequence. The speed of the sequence indicates the
level of the sharpness adjustment currently applied:
the slower the rate, the lower the level of sharpness
being applied.
2 While viewing the displayed high contrast screen image, use the following
keys to adjust the controls:


The X2-Series extender modules incorporate special controls to compensate for
losses incurred within long cable links. Using these controls you can adjust the
picture sharpness and brightness to improve your remote picture quality.
The need for image control adjustment is best discovered when viewing high
contrast images with vertical edges, such as black lines on a white background.
When doing so, if you notice that the screen image is ‘fuzzy’ or ‘dark’ then the
image controls may be able to solve this condition.
Note: If the high contrast images exhibit shadows with separate colours, then
there may be a skew problem which requires a different image adjustment - see
the ‘Skew adjustment’ section for details.

Image controls - sharpness and brightness
14


 
The Adder
test pattern
generator
showing its RGB
crosses. In this case,
the green signal can be
seen out of line with the other
two colours.


See next page for skew adjustment details
To obtain and run the free Adder test pattern generator
1Visit www.adder.com.
2 Click the PRODUCTS heading and then choose Management Software.
3 From the list of software utilities, choose the ADDER Test Pattern
Generator option.
4 Click the Downloads tab and choose the ADDER Test Pattern Generator
option to download the utility.
5 Unzip the downloaded file and run the
TESTpatterns.exe file.
6 Click the SKEW option.


The twisted pair cabling supported by the Gold Extender set (category 5, or
higher) consists of four pairs of cables. Three of these pairs are used by the
modules to convey red, green and blue video
signals to the remote video monitor. Due to
the slight difference in twist rate between
these three pairs, the red, green and blue video
signals may not arrive at precisely the same
time. This is visible as separate colour shadows
on high contrast screen images. This effect is
particularly apparent when using higher screen
resolutions and some types of category 5e
cables.
In this situation, the X2-Silver and X2-Gold
extenders provide internal skew adjustment
that can help to rectify the situation. The skew adjustment works by delaying or
advancing the timing of any of the red, green or blue colour signals so that they
are all delivered to the monitor at precisely the same time. For best results a test
pattern generator is available free of charge from the Adder website (see right)
and this should be displayed when using skew adjustment.

Skew adjustment (X2-Silver and X2-Gold only)
15
Retard
colour
timing
3 As appropriate, press either the R, G or B keyboard keys to select
the appropriate colour channel. Corresponding keyboard
indicators will flash rapidly to show which channel is
currently selected for adjustment: Num Lock for Red,
Caps Lock for Green and Scroll Lock for Blue.
s
ap k
l
rol
ScLock
C Loc
m
NuLock
ps
CaLock
l
rol
ScLock
m
NuLock
ps
CaLock
m
NuLock
l
rol
ScLock
5 When the selected colour crosses are correctly positioned, press
to
exit that colour channel. The keyboard indicators will return to flashing in
sequence.
6 If required, repeat steps 4 to 6 to select and adjust any colour channel until
the vertical lines of the red, green and blue crosses are all aligned.
7 When all colours are correctly aligned, press
to exit configuration mode
and permanently save all settings.
Note: Once you have made a skew adjustment, it may be necessary to readjust the image controls to attain an optimum screen image.

Advance
colour
timing

Exit image
controls
and save
settings

 
) along
Restore
default
skew
settings


2 Simultaneously, press the hotkeys (by default,
and
with
to enter configuration mode.
The three keyboard indicators (‘Num Lock’, ‘Caps
Lock’ and ‘Scroll Lock’) will now begin to flash in
sequence. 4 Press the
and
keys to retard or advance the timing of the selected
colour channel respectively. On screen you will see a change in the position
of the selected colour crosses in relation to the other two.


To use skew adjustment
1 Display the test pattern. See To obtain and run the free Adder test
pattern generator.
The screen will show a series of fine red,
green and blue crosses which should all
be in line, vertically and horizontally. Skew
The Adder
affects the horizontal placement of the
test pattern
colours and using this pattern it is much
generator
showing its RGB
easier to discover which, if any, colours are
crosses. In this case,
the green signal can be
being adversely affected by the twisted pair
seen out of line with the other
cable run. two colours.
16
Miscellaneous settings


 


Reset all configuration options to default states Returns all user configurable options to the settings that are installed at
manufacture. The password will be cleared, however, any current image control
settings or skew adjustments will not be reset.


Report X2-Series extender firmware version Before initiating this command, ensure that the system is running an application
that can display typed keys as screen characters - e.g. a word processor
or Windows Notepad. The current firmware version will be written to the
application in the form of the letter ‘V’ followed by three numbers - for example
V201 means version 2.01.

The following are configuration settings within the modules that are not covered
in other sections of this guide. These can be achieved once within configuration
mode by pressing the indicated keys:
17
No video image is received at the REMOTE module.
• Check that the power/activity indicators are lit on the LOCAL and REMOTE
modules - if they are not, then there is a power problem. The LOCAL
module gains its power either from the computer’s keyboard socket or by
using an optional power supply.
When keys are pressed or the mouse is moved, check that the indicators
flicker – if they do not respond then there could be a twisted pair link
problem or a problem with one of the modules.
• Check that the Category 5 (or higher) cable is wired correctly as per the
diagram in the ‘Skew adjustment’ section in the ‘Special Configuration’
chapter.
• If possible, try using an alternative twisted pair connection between the
modules.
• If the sharpness control is set too high, the monitor may not be able to
display a picture. Try reinstating the factory default sharpness settings.
Please refer to the ‘Image controls - sharpness and brightness’ section in the
‘Special Configuration’ chapter.
• Temporarily disconnect the video link to the LOCAL module, connect a
monitor directly to the computer video port and check for a correct video
image output.
The on-screen mouse pointer does not respond to mouse movements
• The mouse connection may have been interrupted. Either, reboot the
system and re-power the REMOTE module power supply, or try using the
mouse restoration command. Please refer to the ‘Hot plugging and mouse
restoration’ section in the ‘Special Configuration’ chapter.
Sound from the microphone cannot be heard or is very quiet
• Check the setting of LOCAL switch 3 - if a microphone is connected at the
REMOTE module, the switch should be set OFF.
Sound input from the stereo line input is distorted (‘tinny’ sounding) and
only one channel is working
• Check the setting of LOCAL switch 3 - if a stereo line input is connected at
the REMOTE module, the switch should be set ON.
Getting assistance
If you are still experiencing problems after checking the information contained
within this guide, then we provide a number of other solutions:
• Online solutions and updates – www.adder.com/support
Check the Support section of the adder.com website for the latest solutions
and firmware updates.
• Adder Forum – forum.adder.com
Use our forum to access FAQs and discussions.


Video image at the REMOTE module is distorted or shadows appear to
the right of displayed objects.
Adjustments are required to compensate for the length of the twisted pair cable
being used. If video problems persist:
• Please refer to the ‘Image controls - sharpness and brightness’ section in the
‘Special Configuration’ chapter.
• If the overall video image is ‘fuzzy’ and/or has coloured shadows you
may need to make skew adjustments (X2-Silver and X2-Gold only). This
procedure allows you to finely tune the red, green and blue video signal
timings to overcome most colour separation problems. Please refer to the
‘Skew adjustment’ section in the ‘Special Configuration’ chapter.
Power is applied via the power supply but the REMOTE module operation has stopped.
• Each module has an internal automatic cut-out fuse to protect against
power surges. To reset, remove power from the module for one second and
then reconnect.

 
If you experience problems when installing or using the X2-Series extender
modules, please check through this section for a possible solution. If your
problem is not listed here and you cannot resolve the issue, then please refer to
the ‘Getting assistance’ section.


Troubleshooting
The keyboard indicators are flashing between the Caps Lock and the
Num Lock/Scroll Lock and the computer does not respond to any keyboard or mouse inputs.
• The modules are currently locked and require a valid password to be
entered. Please refer to the section ‘Locking and unlocking the system’ for
details.


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.
18
• Dual Video Transmitter (part code: XDVT)
Allows one system to be controlled from two locations or permits a second
video channel to be sent to a remote location. Used in conjunction with two
X2-Silver or X2 Remote modules.
• Rack mount chassis (part code: RMK-CHASSIS)
This 19” chassis allows multiple X2-Series modules to be neatly arranged
within a standard cabinet. Securing plates and screws are supplied separately
for each X2-Series module for use with the rack mount chassis.
• Power distribution module (part code: X-PDM4)
Provides power for up to four X2-Series modules to reduce mains power
socket requirements.
• Rack mount securing plates
• for X2-Gold modules (part code: X-RMK-GOLD)
• for X2-Silver modules (part code: X-RMK-SILVER)
• for X2 modules (part code: X-RMK)
• single slot blanking plate (part code: X-RMK-BLANK)
• quad slot blanking plate (part code: X-RMK-BLANK4)
Warranty
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.

• X2 Extender (part code: X2)
As per the X2-Silver with the exception of the skew adjustment feature.

• X2-Silver Extender (part code: X2-Silver)
As per the X2-Gold with the exception of the audio extension facility.
• For use in dry, oil free indoor environments only.
• Do not use to link between buildings.
• Ensure that the twisted pair interconnect cable is installed in compliance
with all applicable wiring regulations.
• Do not connect the CATx link interface (RJ45 style connector) to any other
equipment, particularly network or telecommunications equipment.
• Warning – the power adapter contains live parts.
• No user serviceable parts are contained within the power adapter - do not
dismantle.
• Plug the power adapter into a socket outlet close to the AdderLink unit 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 extenders, make sure the total
ampere rating of the devices plugged into the extension cord do 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 X2 modules yourself.
• The X2 modules and power supplies can get warm in operation – do not
situate them in an enclosed space without any ventilation.
• The X2 modules do not provide ground isolation and should not be used for
any applications that require ground isolation or galvanic isolation.

 
• X2-Gold Extender (part code: X2-Gold)
This pair of modules allow you to extend not only keyboard, video and
mouse signals up to 300 metres, but also similarly support microphone,
stereo speaker and an RS232 serial channel.
Safety information


The following related X2-Series items are also available:


Products in the X2-Series range
19
Emissions and Immunity
Canadian Department of Communications RFI statement
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.

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.

 
FCC Compliance Statement (United States)


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.
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
European EMC directive 89/336/EEC

A Category 5 (or better) twisted pair cable must be used to connect the X2
modules in order to maintain compliance with radio frequency energy emission
regulations and ensure a suitably high level of immunity to electromagnetic
disturbances.
All other 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.
The extender does not provide any extra error checking on the RS232 serial port
signals and so to ensure a suitably high level of immunity in electrically noisy
installations, an RS232 protocol with bit error correction or a shielded CATx
cable should be used.
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
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
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Contact: www.adder.com/contact-details
Documentation by:
www.ctxd.com
© 2014 Adder Technology Limited
All trademarks are acknowledged.
Part No. ADD0056 • Release 1.3a
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