ADDERLink AV100 Manual

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Making standard connections
Connections to the AdderLink AV modules do not need to follow the precis\
e 
order given in this user guide although it is recommended that you do no\
t apply 
power to the modules until all other connections have been made.
Note: Unless stated otherwise, all connection information given here app\
lies to 
all modules in the AdderLink AV family.  
Connections at the transmitter
To connect video and audio from the source PC system
1 Attach a video cable of suitable type and length (fully shielded with 1\
5 way 
male D-type connectors at both ends, 2m or less - Adder part number: 
VSC18) to the socket labelled IN on the AdderLink AV transmitter.
2 Attach the other end of the video cable to the appropriate VGA 
video output socket on the source PC system.
3 Attach a stereo audio cable (shielded with three way 
3.5mm jack plugs at both ends - Adder part 
number: VSC22) to the socket labelled IN on 
the AdderLink AV transmitter.
4 Attach the other end of the stereo 
audio cable to the appropriate 
audio output socket on the 
source PC system.
To connect a monitor and speakers
The video and audio out ports of the AdderLink AV transmitter can option\
ally be 
used either to: 
•	 Attach	a	monitor	and/or	speakers	in	the	vicinity	of	the	source	PC	system	–	
See below, 
 or
•	 Make	a	cascade	link	to	another	transmitter	module	–	Please	refer	to	the	
section Making cascade connections – Cascading transmitters.
1 Attach the video cable from the monitor to the socket labelled OUT 
on the AdderLink AV transmitter.
2 Attach the stereo audio cable from the speakers to 
the socket labelled OUT on the AdderLink AV 
transmitter.
TRANSMITTER
LINK 2
LINK3
LINK4
104
ADDERLINK
IN
IN
TRANSMITTER
LINK2
LINK3
LINK4
104
ADDERLINK
IN
IN   
						

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To connect the link cable(s)
The links between the transmitter and receiver modules are made using 
between one and four twisted pair cables, specified to Category 5 or h\
igher. 
Each cable carries video and audio signals to each receiver module.
When a single receiver is attached to a link cable, the maximum length o\
f that 
link cable is 300m (1000 feet). 
AdderLink AV104 models
1 Attach the connector of the first link cable to the socket 
labelled L1 OUT on the AdderLink AV104 transmitter. 
There should be a click when the cable is fully 
inserted and locked in place.
2 Attach the connectors of the remaining 
link cables to the sockets labelled 
L2 OUT to L4 OUT, as required.
	 In	all	cases,	there	should	be	
a click when the cable is fully 
inserted and locked in place.
TRANSMITTER
ADDERLINK
IN
IN
100
TRANSMITTER
LINK 2
LINK3
LINK4
104
ADDERLINK
IN
IN
RECEIVERTRANSMITTER
Overall maximum link length: 300m
STANDARD LINK
However, if further receivers are connected in cascade to the initial re\
ceiver 
using its LINK OUT port (AdderLink AV101 models only), then the overall length 
of the link cables used must be reduced. For further information, please\
 refer to 
the section Making cascade connections.
NOTE: Where possible, avoid laying the twisted pair link cable(s) alon\
gside 
power cables. 
AdderLink AV100 models
1  Attach the connector of the link cable to the socket labelled 
LINK on the AdderLink AV100 transmitter. There should 
be a click when the cable is fully inserted and 
locked in place.   
						

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To connect the power supply
NOTE: Please read and adhere to the electrical safety information given \
within 
the Safety information section of this guide. In particular, do not use an 
unearthed power socket or extension cable.
1 Attach the output connector of the power supply to 
the socket labelled POWER on the AdderLink AV 
transmitter.
2	 Insert	the	IEC	connector	of	the	power	cable	
into the corresponding socket of the 
power supply. 
3 When all other connections 
have been made at the 
transmitter and receiver 
modules, connect the other 
end of the power cable to a 
nearby earthed mains socket. 
TRANSMITTER
ADDERLINK
IN
IN
100   
						

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Link in
The link from the transmitter to each receiver module is made using a tw\
isted 
pair cable, specified to Category 5 or higher. 
When a single receiver is attached to a link cable, the maximum length o\
f that 
link cable is 300 metres (1000 feet). 
RECEIVER
SKEWG BSKEW
RGBRIG HT
SH ARP
LINK OUT
101
ADDERLINK
OUT
OUT
RECEIVERTRANSMITTER
Overall maximum link length: 300m
STANDARD LINK
However, if further receivers are connected in cascade to the initial re\
ceiver 
(using the LINK OUT	port	–	AdderLink	AV101	modules	only),	then	the	overall	
length of the link cables used must be reduced. For further information,\
 please 
refer to the section Making cascade connections.
NOTE: Where possible, avoid laying the twisted pair link cable(s) alon\
gside 
power cables. 
1  Attach the connector of the link cable to the socket labelled 
LINK IN on the AdderLink AV receiver. There should be a 
click when the cable is fully inserted and locked in 
place. 
Connections at the receiver
To connect displays and speakers
Dual video and audio outputs are provided on the AdderLink AV receiver. Both \
sets of ports provide identical signals and their connection procedures \
are the 
same:
1 Attach the video cable from the display module to the 
socket labelled OUT on the AdderLink AV receiver.
2 Attach the stereo audio cable from the 
speakers (or amplifier) to the socket 
labelled OUT on the AdderLink AV 
receiver.
RECEIVER
SKEW
G BSKEW
RGBRIG HT
SH ARP
LINK OUT
101
ADDERLINK
OUT
OUT   
						

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To connect the power supply
NOTE: Please read and adhere to the electrical safety information given \
within 
the Safety information section of this guide. In particular, do not use an 
unearthed power socket or extension cable.
1 Attach the output connector of the power supply to the 
socket labelled POWER on the AdderLink AV receiver.
2	 Insert	the	IEC	connector	of	the	power	cable	into	
the corresponding socket of the power 
supply. 
3 When all other connections have 
been made at the transmitter 
and receiver modules, connect 
the other end of the power 
cable to a nearby earthed 
mains socket.
 
RECEIVER
SK EW
G BSK EW
R GB RIG HT
SH ARP
LINK OUT
101
ADDERLINK
OUT
OUT   
						

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Making cascade connections
The AdderLink AV series of products have been specifically designed to\
 be 
flexible in order to support both your immediate and future needs for \
media 
streaming.	In	addition	to	the	standard	connections	made	from	transmitters	to	
receivers, you can also link extra transmitters to transmitters and/or r\
eceivers to 
receivers in order to provide more display/speaker outputs. These non-st\
andard 
links are called cascade connections. 
Important limitations when cascading
•	 There	should	never	be	more	than	three	cascade	connections	between	the	
primary transmitter (the one connected to the source PC) and any receiver. 
The cascade connections can all occur at the transmitter end or all at t\
he 
receiver end (AV101 modules only) or at a mixture of both.
•	 Each	cascade	connection	reduces	the	overall	link	length	permissible	from	a	
transmitter to the final receiver in a branch. To calculate the recomm\
ended 
overall maximum link length for a branch, count the number of cascade 
connections between the primary transmitter and the final receiver in \
that 
branch. The effects of cascade connections on overall branch link length\
s 
are as follows:
Number of cascade connections Overall length of links for a branch 
(in a branch) (from transmitter to furthest receiver)
0  300m (1000 feet)
1 250m (800 feet)
2 200m (650 feet)
3 175m (600 feet)
Notes
 The lengths of transmitter cascade (video) connections should never be\
 
longer than 2m (6 feet) and can be considered to have a negligible eff\
ect 
upon overall link lengths.
	 The	maximum	resolutions	achievable	are:	1600	x	1200	x	60Hz	at	200m	
and	1280	x	1024	x	60Hz	at	300m.	If	you	are	using	lower	resolutions	then	it	
may be possible to achieve longer transmission distances than shown in t\
he 
above table although we do not recommend runs longer than 300m in any 
installation.	If	you	are	running	shorter	cables	then	it	may	be	possible	to	use	
more cascades than shown in the above table.
Cascade connection examples
These examples demonstrate valid configurations and the effect of casc\
ade 
connections upon overall link lengths:  
RECEIVER
RECEIVER
RECEIVER
TRANSMITTER
Overall maximum length for link with no cascades: 300m
Overall maximum length for link with 1 cascade:250m
Cascade 1Branch 1
Branch 2
ST ANDARD LINK
ST
ANDARD LINK
RECEIVER
RECEIVER
RECEIVER
RECEIVER
RECEIVER
RECEIVER
RECEIVER
RECEIVER
RECEIVER
Primary
T ransmitter
TRANSMITTER
TRANSMITTER
TRANSMITTER
Cascade 1
Cascade 2
Cascade 2
Cascade 3
Cascade 3
Fr om PC Branch 1
Branch 2
Branch 3
Overall maximum length for link with 3 cascades:
175m
Cascade 1
Cascade 3
Cascade 2
STANDARD LINK
STANDARD LINK
STANDARD LINK   
						

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Cascading transmitters
Expansion at the transmitter end 
is achieved using the video and 
audio output ports. The signals 
from these ports are connected 
to the video and audio inputs of 
the next transmitter and so on. 
AdderLink AV100 and AV104 
transmitters can be mixed in a 
cascade in any order using the 
method discussed here.  
NOTE: Ensure that there are no more than 
three cascades (transmitter or receiver cascades) 
between the primary transmitter and the furthest 
receiver in any branch.
CASCADE LINK
CASCADE LINK
ST ANDARD LINKS
ST ANDARD LINKS
CASCADE LINK
CASCADE LINK
VIDEO
AUDIO
POWER
POWER
PC
TRANSMITTER
TRANSMITTER
Primary
T ransmitter
To connect cascaded transmitters
1  Attach a video cable of suitable type and length (fully shielded with 
15 way male D-type connectors at both ends, 2m or less - Adder part 
number: VSC18) to the socket labelled OUT on the primary AdderLink AV 
transmitter.
2 Attach the other end of the video cable to the socket  
labelled IN on the secondary AdderLink AV transmitter.
3 Attach a stereo audio cable (shielded with three 
way 3.5mm jack plugs at both ends - Adder part 
number: VSC22) to the socket labelled OUT on 
the primary AdderLink AV transmitter.
4 Attach the other end of the stereo audio 
cable to the socket labelled IN on the 
secondary AdderLink AV transmitter.
5 Repeat such cascade links until the 
required number of transmitters (up to a 
maximum of four) are present. Connect 
the remaining signal and power cables 
to the added transmitters (and their 
respective receivers) as discussed earlier 
within this chapter. 
TRANSMITTER
LINK 2
LINK3
LINK4
104
ADDERLINK
IN
IN
TRANSMITTER
LINK 2
LINK3
LINK4
104
ADDERLINK
IN
IN
Primary transmitter
Secondary transmitter   
						

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Cascading receivers (AdderLink AV101 only)
Expansion at the receiver end is made possible using 
the LINK OUT ports present on AdderLink AV101 
receivers. Receiver cascade links are made using 
twisted pair cables, specified to Category 5 or higher.
NOTE: Ensure that there are no more than three 
cascades (transmitter or receiver cascades) 
between the primary transmitter and the 
furthest receiver in any branch. 
RECEIVER
101
STANDARD
LINK CASCADE LINK
CASCADE LINK
POWER
RECEIVER
RECEIVER
101101
Primary
Receiver
Video image adjustments
As link cable lengths increase 
and more receivers are 
cascaded, colour separation 
effects may become noticeable 
within displayed video images, 
particularly at higher resolutions. 
These	effects	are	called	‘skew’	
and result from differing delays 
on the red, green and blue 
colour signals as they travel to 
the receivers. Each AdderLink 
AV101 receiver provides two 
extra adjustment dials to 
counter skew effects. For further 
information, please refer to the 
section Skew compensation 
adjustments.   
RECEIVER
SK EW
G BSKEW
RGBRIG HT
SH ARP
LINK OUT
101
ADDERLINK
OUT
OUT
RECEIVER
SKEW
G BSKEW
RGBRIG HT
SH ARP
LIN K O UT
101
ADDERLINK
OUT
OUT
To connect cascaded receivers
NOTE: Please observe the recommended overall link cable lengths (includ\
ing 
receiver cascade connections) in order to avoid signal degradation.
1 Attach the connector of the cascade link cable to the socket 
labelled LINK OUT on the primary AdderLink AV101 receiver. 
2 At the other end of the cascade link cable, attach the 
connector to the socket labelled LINK IN on the secondary 
AdderLink AV101 receiver.
	 In	all	cases,	there	should	be	a	click	when	the	cable	is	fully	
inserted and locked in place.
3	 If	necessary,	repeat	the	above	procedure	for	a	tertiary	
AdderLink AV101 receiver.
4 Connect the remaining signal and power cables to the 
added receivers, as discussed earlier within this chapter. 
Primary receiver
Secondary receiver   
						

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Operation
In	operation,	the	AdderLink	AV	modules	are	designed	to	be	completely	
transparent - high quality video and audio from the source PC system are\
 played 
as normal, the only difference is that they are now being seen and heard\
 up to 
300 metres away. 
Indicators
All AdderLink AV modules are 
equipped with two indicators to 
confirm operation and, if necessary, 
assist with quick troubleshooting of 
potential problems.
The indicators are located on one of 
the end panels, near to the LINK port and 
operate as follows:
•	RED  When lit, indicates the presence 
of power into the module,
•	GREEN When lit, indicates the 
presence of a video input into the 
module.  
LINK OUT
Brightness and sharpness adjustments
The brightness and sharpness adjustments 
provided on every AdderLink AV receiver allow 
you to compensate for any losses incurred 
within long cable links. These two adjustments 
can be made in any order and independently 
of each other.
When making adjustments it is necessary to 
have access to the AdderLink AV receiver and 
to be able to view one or both connected 
display screens. Both adjustments, sharpness 
in particular, are made easier when viewing 
high contrast images with vertical edges, such 
as black lines on a white background.
NOTE: Both video outputs are equally affected by your brightness and/or \
sharpness adjustments. 
To display a suitable high contrast image 
•	 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. 
•		 A	WHITE	shadow	on	the	right	of	the	
character	indicates	OVER	compensation.		
BRIGH T
SHARP
ADDERLINK
Sharpness dial
Brightness dial
High contrast black character on white background 
Black or bright white shadow on the right indicates the need for sharpness adjustment
To adjust brightness and/or sharpness 
1 Carefully insert a small screwdriver into the dial labelled BRIGHT or SHARP, as 
appropriate.
2 Slowly turn the dial clockwise or anticlockwise and observe the effect s\
hown 
on the screen. Withdraw the screwdriver when the displayed image is 
shown at its optimum clarity.
3	 If	necessary,	repeat	step	2	for	the	other	dial.			
SECT 4
Adjustments
Video signals are susceptible to the effects of long distance cables and\
 for 
this reason, every AdderLink AV receiver includes brightness and sharpne\
ss 
adjustment dials. Additionally, the AdderLink AV101 receivers are also e\
quipped 
with two extra dials to eliminate the effects of colour skew within the \
video 
image.   
						

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Skew compensation adjustments (AV101 only)
The twisted pair cabling used to 
link the AdderLink AV modules 
consists of four pairs of wires per 
cable. Three of these pairs are 
used to convey the red, green and 
blue video signals. Due to slight 
differences in twist rate between 
the wire pairs, the red, green and 
blue video signals may not arrive 
at precisely the same time. This 
effect is visible as separate colour 
shadows on high contrast images 
and is particularly apparent when 
using higher screen resolutions over 
long distances and also when using 
certain types of category 5e cables. 
Skew compensation adjustments are made using two rotary dials, the fir\
st 
affects the relationship between the green and blue colour signals (SKEW 
GB) while the second (SKEW RG) 
operates similarly on the red and 
green signals. Each dial delays one 
of its stated colours in relation 
to the other. By using both dials 
it is possible to correctly align all 
three colours. The effects of skew 
are easiest to view and adjust 
when distinct red, green and blue 
elements, in close proximity, are 
present within the screen image. 
An appropriate test pattern is 
supplied on the AdderLink AV CD-
ROM	or	alternatively	 you	can	create	 your	own	 test	pattern	 as	discussed	 opposite. 
NOTE: Both video outputs are equally affected by your skew adjustments. \
SKEW
G BSKEW
RGBRIG HT
SH ARP
ADDERLINK
SKEW RG dial
SKEW GB dial
To create a skew test pattern  
1  Run any image creation/editing application, such as the Paint program 
supplied with Windows.
2 Using the image application create three 
stacked	horizontal	rectangles	(one	red,	one	
green and one blue) that fill the width of 
the screen.
3 Draw a vertical black line down across 
the coloured bars and then repeat this 
vertical line at intervals along the width 
of the coloured bars. These lines create 
breaks across the colours and give you 
more	opportunities	to	view	the	horizontal	
position of each colour relative to the others.   
To display the supplied skew test pattern 
1	 Insert	the	supplied	Adder	CD-ROM	into	the	
CD player of the computer. 
2 Within Windows, use the My Computer 
option (usually available as a desktop icon 
or within the Start menu) to view the 
contents	of	the	CD-ROM.	Double-click	the	
SkewTest entry to display the standard test 
pattern.	If	necessary,	select	the	Full screen 
option from the File menu to maximise the 
application window so that the image fills 
the screen. 
 The screen will show a series of fine red, 
green and blue crosses which should all 
be	in	line,	vertically	and	horizontally-	skew	
affects	the	horizontal	placement	of	the	
colours. 
12345 678
8
6
5
2 8
6
5
2
Data signal
Red
video
signal
Green
video signal
Blue
video signal
7
3
4
1
7
3
4
1