ADDERLink XUSB PRO Manual

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4 Attach the connector of the 
category 5, 5e, 6, 7 or 7a link 
cable (up to 300 metres in 
length) to the ‘TO LOCAL’ socket 
on the remote module.
5 Optionally attach the lead from 
your stereo speakers to the 
audio output socket on the 
remote module. 
To speakers
Link to local module
[MS2 variant only] Connect a second 
category 5, 5e, 6, 7 or 7a link cable (up 
to 300 metres in length) to the upper 
socket on the MS2 remote module.
Primary CATx link cable
Secondary CATx link cable
continued
Note: Ensure that the primary and secondary 
links from the local module are not crossed.   
						

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6 Attach the output connector 
of the power supply to the 
‘POWER’ socket of the remote 
module.
To power supply
7 Attach the IEC power lead to the power supply body and insert the mains \
plug of the lead to a nearby earthed power outlet. 
To power outlet   
						

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Dual user configuration
You can combine two Adder X-USBPRO (or X-USBPRO-MS2) 
extender sets to create a dual user configuration. Such an 
installation would allow a single computer to be controlled from 
two different positions, with each position receiving the same audio 
visual output and having equal and concurrent control over the 
computer. Arbitration between the two positions is handled by the 
computer’s USB system and so this arrangement is better suited to 
situations where two users would not often require simultaneous 
access.
Audio, USB and video from the PC
Audio crosslink from first to second local module
Video crosslink from first to second local module
Second USB from the PC
PC
AUDIOVIDEO
USB
REMO TE
ADDER®
POWER
SHARPNESS
LINK
TO LOCA L
ON
REMO TE
ADDER®
POWER
SHARPNESS
LINK
TO LOCA L
ON
U SER
1
U SER
2
ADDER®
ADDER®
ADDER®
ADDER®
Both local modules require their own USB links to the PC
Video and audio crosslinks are made from first local module to the second local module 
CATx link (up to 300m)
CATx link (up to 300m)
First local module
Most of the connections are similar to the standard configuration. The\
 main 
difference is in the links to the second local module. Use an audio link\
 lead to 
connect the audio out socket of the first local module to the audio in\
 socket of 
the second. Similarly, use a video link lead to connect the video out an\
d video 
in ports. The second local module then requires its own USB link directl\
y to the 
computer. In all other respects follow the standard instructions to conn\
ect CATx 
links and all of the remote module connections.   
						

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Video display (DDC) information
The Display Data Channel (or DDC) is an industry standard scheme that \
allows 
video displays to declare their capabilities to the computer’s video \
adapter 
circuitry, allowing the latter to optimise their outputs accordingly. Si\
nce the 
widespread adoption of the scheme, video adapters have become increasing\
ly 
dependent on receiving relevant DDC information during startup, before t\
hey 
will output anything more than a rudimentary video signal. 
It is not possible to transmit DDC data back from the video display that\
 is 
attached to the remote module to the computer’s video adapter. Theref\
ore, 
during startup of the local module, it will search for a video display c\
onnected to 
its local feed-through connector: 
•	 If	a	local	video	display	is	found,	its	DDC	information	will	be	compared	to	
the information already stored and, if different, will be copied, stored\
 and 
presented to the video adapter upon request. 
•	 If	no	local	video	display	is	found,	the	local	module	will	make	available	its	
previously stored set of DDC parameters to the video adapter upon reques\
t; 
or, if none were stored, a default set.
In either case, the DDC information taken by the video adapter will be u\
sed 
to determine the video output that is sent via the X-USBPRO modules to t\
he 
remote video display.
If you find that the default DDC information is not completely suitabl\
e for your 
remote display, try temporarily connecting your remote display to the vi\
deo out 
port of the local module. When the local module is powered up, it will r\
ead and 
store the DDC information from your display. You can then return the dis\
play to 
its remote position and the new DDC information will be used at every po\
wer 
on.
Note: For MS2 variants, the dual video channels are handled seprately. 
Therefore, if you wish to capture both sets of DDC information, you will\
 need 
to temporarily connect both of your remote video displays to the video o\
utput 
ports of the local module.          
DDC indications
When power is first applied to the local module (either from 
the computer’s USB port or an optional power adapter) it will 
search for valid DDC data on its video out connector. During 
this process, the green indicator (built into the link connector) 
will flash to indicate its progress:
•	 If	no	valid	DDC	information	is	located,	the	green	indicator	
will give one very short flash, representing an attempt to 
read data. No changes will be made to the information already stored wit\
hin 
the local module.
•	 If	the	DDC	information	is	the	same	as	that	already	stored,	no	change	will	be	
made and the green indicator will give one single flash as the informa\
tion is 
checked and normal operation resumes.
•	 If	different	DDC	information	is	located,	the	green	indicator	will	flash	rapidly	
for 2 to 3 seconds while the new information is stored. A single flash\
 will 
then be given as the information is checked and normal operation resumes\
.   
The local module’s green indicator also provides fault indications to\
 assist with 
troubleshooting:
•	 Two	flashes	-	Checksum	error	prior	to	copying	-	no	information	will	be	
programmed.
•	 Three	flashes	-	Too	much	data	to	fit	into	the	module	-	the	module	can	hold	
a maximum of two pages of DDC information.
•	 Rapid	flashing	followed	by	four	flashes	-	data	was	lost	during	copying	-	the	
default data was substituted. Repeat the power on process.
•	 Rapid	flashing	followed	by	five	flashes	-	Checksum	error	during	copying	-	
the default data was substituted. Repeat the power on process. 
LINK
O REMO TE
ON   
						

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Video compensation
The X-USBPRO modules include a video compensation system that allows you\
 to 
get the best results from your remote video display(s). Using this spe\
cial mode 
you can configure:
•	Cable type - Select the type of link cable used.
•	Cable length - Enter the length of the link cable.
•	Video gain - Alter the signal gain for the image.
•	Colour skew - Adjust the timing of each colour to fine tune the image.
•	Expert mode - Please contact Adder technical support for details. 
This flash sequence indicates that you are at Standby level  
Num
Loc k Caps
Loc
k Scroll
Loc k
 The indicators on the keyboard linked to the 
remote unit will begin to flash in sequence. 
 Also, the green indicator adjacent to the CATx 
link socket will flash.  
 Note: During video compensation mode, the 
keyboard and any other connected USB devices 
will be temporarily isolated from the computer.     
1
ON
2
 
You are now at the standby level within video compensation mode. 
 From standby, you can choose which adjustments to make. Generally you 
should set the cable type and cable length options first. Then, if nec\
essary, 
use the video gain and colour skew adjustments to fine tune the remote\
 
video image.
 Please see the next page for details about each adjustment >>> 
 When your adjustments are complete, return the unit to normal operation \
as described right.
To enter video compensation mode
1 Ensure that the two X-USBPRO units are connected to the computer and 
powered on. A USB keyboard must be connected to the remote unit.  
2 Arrange your test images on the remote screen. Please refer to the secti\
on 
Test images while compensating.
3 On the remote unit, click the miniature switch 1 
to its ON position. 
MS2 variants  By default, all video compensation changes that you make will 
affect both channels equally. If you wish to adjust the channels separat\
ely:
•	 Enter	video	compensation	mode	(see	left).	The	green	indicators	on	both	link	
sockets of the remote module will flash.
•	 From	standby,	press	. The keyboard indicators will alternate between 
the Num Lock and Scroll Lock, and the Caps Lock. Press  or  to select 
the primary or secondary video display, respectively. The green indicato\
r 
of the link socket corresponding to the chosen video channel will flas\
h 
(lower=primary, upper=secondary), the other will remain on.
•	 Make	the	required	compensation	changes	to	the	chosen	video	channel	
using the techniques described below.
•	 To	return	to	using	both	channels,	from	standby,	press	 and then press   
The green indicators of both link sockets will flash.
To exit video compensation mode (return to normal operation)
1 Ensure that you are at standby level by exiting from any adjustment opti\
ons. 
2 On the remote unit, return the miniature switch 1 to its OFF position.
 All USB devices will be reconnected to the computer and normal operation\
 
will continue.      
						

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To set the cable length
a From standby, press . The Caps Lock and Scroll 
Lock indicators will flash.
b Use the keypad to enter the cable length in metres.
c Press  to save the value and return to standby.
 Alternatively, press  to discard any change and return to standby.
Note: You can also increase or decrease the cable length setting from th\
e 
standby level (and view the resulting change in screen image quality) \
using  
and  respectively. If necessary, press  to return to a neutral setting. Such 
adjustments to the cable length setting are saved automatically.  
To adjust video gain
a From standby, use  and  to decrease or increase the gain level. If 
necessary, press  to return to a neutral setting. Gain adjustments are 
saved automatically. 
continued
Num
Loc k Caps
Loc k Scroll
Loc kNum
Loc k Caps
Loc k Scroll
Loc k
Video compensation (continued)
Once you have entered video compensation mode, you can choose which 
adjustments to make. Generally you should set the cable type and cable l\
ength 
options first. Then, if necessary, use the video gain and colour skew \
adjustments 
to fine tune the remote video image.
To set the cable type
a From standby, press . The Num Lock and Caps 
Lock indicators will flash.
b Type the number that corresponds to the category 
of link cable used:
•	 Press	 for Cat 5 
•	 Press	 for Cat 5e 
•	 Press	 for Cat 6 
•	 Press	 for Cat 7 
•	 Press	 for Cat 7a 
c Press  to save the value and return to standby. Alternatively, press  
to discard any change and return to standby.    
						

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Num
Lock Caps
Loc
k Scroll
Loc
k
Num
Lock Caps
Loc k Scroll
Loc
k
Num
Loc k Caps
Loc
k Scroll
Loc k
 Note: If the screen goes blank during adjustment, either press the oppos\
ite 
arrow key to the one you last pressed or press  to reset all delays.  
c Press  to save the setting and return to standby.
 Alternatively, press  to discard any change and return to standby.
To exit video compensation mode (return to normal operation)
1 Ensure that you are at standby level by exiting from any adjustment opti\
ons. 
2 On the remote unit, return the miniature switch 1 to its OFF position.
 All USB devices will be reconnected to the computer and normal operation\
 
will continue. 
To adjust colour skew
You will only need to use these adjustments if the video image is not sh\
arp after 
adjusting the cable type and length. Before entering video compensation \
mode, 
display the suggested screen content (see Test images while compensating in 
the box right). Look for colour fringes adjacent to the displayed icons\
 and text. 
Also check the Adder test pattern generator image to confirm whether t\
he red, 
green and blue crosses are all vertically aligned.
a From standby, press either ,  or  depending on which colour needs 
to be adjusted. The Num Lock, Caps Lock or Scroll Lock 
indicators will flash for the Red, Green and Blue channels 
respectively.  
b Use  and  to adjust the delay for the 
chosen colour while watching the results 
on the remote video display.
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.
What is skew and why is compensation needed?
The twisted pair cabling supported by the X-USBPRO modules consists of f\
our 
pairs of wires per cable, three of which are used to convey red, green a\
nd blue 
video signals to the remote video display. 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 correct times. This is visible as separate colour shado\
ws on high 
contrast screen images. This effect is particularly apparent when using \
higher 
screen resolutions and some types of category 5e cables.
The video compensation system within the remote module allows you to del\
ay 
or advance the timing of any of the colour signals so that they all arri\
ve at the 
display at the correct times.
Take a close look at a locally connected display. From left to right, gr\
oups of 
pixels are usually arranged in the order: R / G / B and the signals must\
 arrive in 
the correct order to obtain the optimum screen image. The Adder test pat\
tern 
generator (see box below) in particular helps to highlight the pixel l\
ayout by 
showing very narrow horizontal and vertical lines.
To obtain and run the free Adder test pattern generator
1 Visit 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.  
Test images while compensating
For best results while adjusting video 
compensation, arrange a combination of 
elements on the remote display. We suggest 
the following:
•	 Roughly	half	of	the	screen	to	display	
standard operating system colour icons on 
a mid-green wallpaper.
•	 A	quarter	screen	of	the	Adder	test	pattern	
generator.
•	 A	quarter	screen	of	standard	black	text	on	a	white	background.		
Note: You need to set all of the above BEFORE entering video compensatio\
n 
mode because the USB keyboard will be isolated from the computer.    
						

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HT
Operation
General use
In use, the X-USBPRO (and X-USBPRO-MS2) modules should be transparent \
- the 
system and its peripherals should operate exactly as normal, the only di\
fference 
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 incorrect video compensation\
 
setting and it may be necessary to make adjustments to correct this. Ple\
ase see 
Video compensation in the ‘Installation’ section.
Dual user arbitration
When using two sets of X-USBPRO modules to allow two users to access a s\
ingle 
computer, be aware that arbitration between the users is handled by the \
USB 
sub-system of the computer. Unlike with other Adder products, this means\
 that 
both users can control the computer at exactly the same time and the res\
ulting 
keyboard and mouse influences will be an amalgam of the two inputs - i\
.e. a 
mouse move to the right by one user will cancel out a simultaneous left \
mouse 
move by the other. The same is also true when the local module has feed-\
through peripherals attached to it, adjacent to the computer. 
For this reason, the X-USBPRO dual user arrangement is better suited to \
situations where two users would not often require simultaneous access.
Peripheral operation
USB
Each X-USBPRO remote module provides four USB outlets, each of which can\
 
support USB 2.0 peripherals at speeds up to 12Mbps. The X-USBPRO appears\
 to 
the computer as a four port USB hub.
If the link between the modules is interrupted, any connected USB periph\
erals 
will be automatically disabled and re-enabled once the connection is res\
tored. 
[MS2 variant only] Note: When connecting four USB devices to the unit, e\
nsure 
that their total power requirements do not exceed 1700mA (1.7A). The U\
SB 
standard states a maximum allowable current draw of 500mA (0.5A) per d\
evice, 
although most devices remain well below this limit - USB keyboards and m\
ice 
typically require 100mA. Each X-USBPRO contains a self-resetting fuse th\
at will 
prevent damage by shutting down the unit if the total power draw becomes\
 
excessive.    
						

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Further information
Getting assistance
If you are still experiencing problems after checking the information co\
ntained 
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 soluti\
ons 
and firmware updates.
•	 Adder	Forum – forum.adder.com
 Use our forum to access FAQs and discussions.
•	 Technical	support – www.adder.com/contact-support-form 
 For technical support, use the contact form in the Support section of th\
e  
adder.com website - your regional office will then get in contact with\
 you. 
Troubleshooting
Status indicators
The green indicators built into the link connectors on each module provi\
de 
useful feedback regarding the connection and power status:
During startup (of the local module)
•	 One	very	short	green	flash:	no	valid	DDC	information	available	from	a	locally	
connected video display, no changes made to stored DDC information.
•	 Single	green	flash:	DDC	information	being	read	from	a	locally	connected	
video display, but no changes made to stored DDC information.
•	 Rapid	green	flash	for	2	to	3	seconds,	followed	by	single	flash:	New	DDC	
information being read and stored from a locally connected video display\
.   
•	 Two	green	flashes	-	Checksum	error	prior	to	copying	-	no	information	will	
be programmed.
•	 Three	green	flashes	-	Too	much	data	to	fit	into	the	module	-	the	module	can	
hold a maximum of two pages of DDC information.
•	 Rapid	green	flashing	followed	by	four	flashes	-	data	was	lost	during	copying	
- the default data was substituted. Repeat the power on process.
•	 Rapid	green	flashing	followed	by	five	flashes	-	Checksum	error	during	
copying - the default data was substituted. Repeat the power on process.\
During operation (of either the local or remote module)
•	 Continual	yellow:	Valid	CATx	link	to	other	module	sensed	(on	MS2	variants,	
only the indicator of the lower link connector is used for this purpose).
•	 Continual	green:	Correct	power	input	sensed.	
Important
The X-USBPRO can be used with other USB hubs in the system, but please n\
ote 
that due to power constraints, the local unit should not be connected to\
 the 
downstream port of a bus-powered USB hub. Additionally, X-USBPRO-MS2 loc\
al 
units must always be powered using their supplied power adapter. Please \
see 
page 8 for details.  
HT   
						

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Safety information
•	 For	use	in	dry,	oil	free	indoor	environments	only.
•	 Do	not	use	to	link	between	buildings.
•	 Ensure	that	all	twisted	pair	interconnect	cables	are	installed	in	compliance	
with all applicable wiring regulations. 
•	 Do	not	connect	CATx	link	interfaces	(RJ45	style	connectors)	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	an	earthed	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	remote	module,	make	sure	the	
total ampere rating of the devices plugged into the extension cord do no\
t 
exceed the cord’s ampere rating. Also, make sure that the total amper\
e 
rating of all the devices plugged into the wall outlet does not exceed t\
he 
wall outlet’s ampere rating.
•	 Do	not	attempt	to	service	the	modules	yourself.
•	 The	power	supply	can	get	warm	in	operation	–	do	not	situate	it	in	an	
enclosed space without any ventilation. 
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 ori\
ginal 
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 liab\
ility can be 
accepted for damage due to misuse or circumstances outside Adder’s co\
ntrol. 
Also Adder will not be responsible for any loss, damage or injury arisin\
g directly 
or indirectly from the use of this product. Adder’s total liability u\
nder the terms 
of this warranty shall in all circumstances be limited to the replacemen\
t value of 
this product.
If any difficulty is experienced in the installation or use of this pr\
oduct that you 
are unable to resolve, please contact your supplier.