ADDERLink AV200 Manual





20


Operation
In	operation,	 the	AdderLink	 AV	modules	 are	designed	 to	be	 as	transparent	 -	high	
quality video and audio signals from the source PC system are distribute\
d to the 
various display units and control signals are similarly routed back to t\
he system. 
Indicators
All AdderLink AV modules are equipped with two indicators to confirm 
operation and, if necessary, assist with quick troubleshooting of potent\
ial 
problems.
The...





21


Serial port switching
The AdderLink AV204T and AV208T modules use a sophisticated switching 
system to extend the ordinarily point-to-point nature of serial communic\
ations 
across a network of connected display units. The AdderLink system allows\
 you 
to communicate with any display individually or to broadcast commands ac\
ross 
the network as a whole. When switching to a single display, it is then p\
ossible 
to	receive	responses	back...





22


Adjustments
The AV200R and AV201R receivers both include brightness and sharpness 
adjustment dials. Additionally, the AV201R receiver is also equipped wit\
h two 
extra dials to eliminate the effects of colour skew within the video ima\
ge. 
Brightness and sharpness adjustments
The brightness and sharpness adjustments 
provided on every AV receiver allow you to 
compensate for any losses incurred within 
long cable links. 
When making...





23


Skew compensation adjustments (AV201R only)
The twisted pair cabling used to 
link the 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...





24


To zero the skew adjustment dials
When supplied, the two skew dials are set in 
their neutral positions. i.e. no delay to either 
of its colours. However, if the module has 
been previously used and adjusted then you 
may need to relocate the zero point. There are 
no setting markers around the two skew dials 
and the dial itself does not have a pointer.  
1	 Insert	a	small	screwdriver	into	the	skew	
dial and twist it all the way...





25


Upgrading
The internal software (firmware) of the AV204T and AV208T transmitte\
rs can be 
upgraded in order to take advantage of a continual process of improvemen\
t and 
innovation. The supplied serial cable is required to connect the AV204T/\
AV208T 
module to the serial port of a suitable system.
Note: It is not possible to alter the firmware within the AV200T trans\
mitter 
or the AV200R/AV201R receivers. The operation of these modules...





26


Further information
Troubleshooting
If	you	experience	problems	when	installing	or	using	the	AdderLink	AV	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.
No video image is received at the receiver module.
•		 Check	that	the	both	the	red	power	indicators	are	lit	on	both	the	transmitter	
and...





27


Safety information
•	 For	use	in	dry,	oil	free	indoor	environments	only.
•	 Do	not	use	to	link	between	buildings.
•	 Not	suitable	for	use	in	hazardous	or	explosive	environments	or	next	to	highly	
flammable materials.
•	 Ensure	that	all	twisted	pair	interconnect	cables	are	installed	in	compliance	
with all applicable wiring regulations. 
•	 Do	not	connect	the	CATx	link	interface	(RJ45	style	connector)	to	any	other	
equipment, particularly...





28


Products in the AdderLink AV200 range
The following items are available within the AdderLink AV200 product ran\
ge:
•		AdderLink AV200 pair (part number: ALAV200P) 
One	AdderLink	AV200T	transmitter	and	one	AdderLink	AV200R	receiver.
•		AdderLink AV200 transmitter (part number: ALAV200T) 
Single AdderLink AV200T transmitter.
•		AdderLink AV200 receiver (part number: ALAV200R) 
Single AdderLink AV200R receiver.
•		AdderLink AV201 receiver (part...





29


Emissions and Immunity
A Category 5 (or better) twisted pair cable must be used to connect th\
e 
modules in order to maintain compliance with radio frequency energy emis\
sion 
regulations and ensure a suitably high level of immunity to electromagne\
tic 
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...