ADDERLink LPV150 Line Powered Extender Manual

							
Your AdderLink LPV package
The AdderLink LPV allows you to extend analogue video over a maximum of \
150 metres of 
twisted pair cable with the minimum of infrastructure and fuss. It is simply powered via USB from 
the transmitter end, so that no additional power supply is required at the receiver, hence the 
name LPV or Line Powered Video.
In addition to this brief guide, your package should contain the followi\
ng:
Supplied items
Adder Technology Limited,
Technology House,
Trafalgar Way,
Cambridge, CB23 8SQ,
United Kingdom
Tel: +44 (0)1954 780044
Fax: +44 (0)1954 780081
AdderLink LPV
User Guide
[email protected]
www.adder.com© 2010 Adder Technology Limited • Part No. MAN-LPV-QUICK • Release 1.2b  All trademarks are acknowledged.
Adder Corporation,
350R Merrimac Street,
Newburyport,
MA 01950,
United States of America
Tel: +1-888-932-3337 
Fax: +1-888-275-1117
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 indi-
rectly 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.
Regulatory information
European EMC directive 89/336/EEC
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 receiv-
ing antenna. (b) Increase the separation between the equipment and the receiver. (c) Connect 
the equipment to an outlet on a circuit different from that to which the receiver is connected. (d) 
Consult the supplier or an experienced radio/TV technician for help.
FCC compliance statement (United States)
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 communications. It has been tested and found to comply wit\
h 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.
Adder Asia Pacific,
6 New Industrial Road, 
Hoe Huat Industrial Building
#07-01, 
Singapore 536199
Tel: +65 6288 5767 
Fax: +65 6284 1150
What you may additionally need
PSU-LPV-KIT 
External power 
adapter and USB 
adapter cable
This power kit is only required if the host 
computer or other device with a USB 
port cannot provide sufficient power.  
Safety information
• For use in dry, oil free indoor environments.
• Ensure that the twisted pair interconnect 
cable is installed in compliance with all ap-
plicable wiring regulations. 
• Do not connect the interconnect cable to 
any other equipment, particularly network 
or telecommunications equipment.
• Do not attempt to service the units yourself.
Local unit
Remote unit
ALPV150P package includes: 1 local unit and 1 remote unit
ALPV150T package includes: 1 local unit only
ALPV150R package includes: 1 remote unit only 
						

							
Connecting your AdderLink LPV
DDC information
DDC information is not sent from the remote unit. Instead, the local unit holds a standard set 
of DDC details which are suitable for most display screens. If the standard details are not suit-
able, temporarily connect the local unit directly to the display screen that is to be emulated and 
power on the screen. Note: The local unit must be powered via its USB connection. 
If the DDC information is different to that already held, the yellow indicator will flicker rapidly 
for 2 to 3 seconds while the new information is stored. 
If a problem occurs while attempting to harvest DDC information, the yellow ind\
icator on the 
local unit will show a number of distinct flashes. Note the number of \
flashes in case you need 
to contact technical support, but otherwise retry the procedure.
Power control
IMPORTANT: Do not connect the local unit, via the CATx cable, to anything other than the 
remote unit. 
Low voltage power for the remote unit is fed via one of the pairs within the cable. The local 
unit always performs a check before applying power, which is shown by flashing the yellow 
indicator. When power is applied, the yellow indicator will remain on.
The local unit will disable the power and begin flashing its yellow in\
dicator if:
• The cable is disconnected
• Line power is overloaded
If the host computer goes into standby (turns off the display screen by disabling sync pulses, as 
is usually the case) the local unit will disable line power and go into\
 a low power mode after a 
period of approximately 16 seconds. It will not attempt to check the line or turn power back 
on. The yellow indicator will remain off until video input is restored.
Local unit
1 Connect the plugs to the video output 
and a vacant USB port on the computer. 
Note: The USB connection provides only 
power for the units. 
2 Attach one end of the link cable to the 
socket at the end of the unit.
Remote unit
1 Connect the video plug to the socket 
on the display screen.
2 Attach the other end of the link cable 
to the socket at the end of the unit.  
IMPORTANT: 
• Use only screened (FTP) cable to connect the two units. For cable runs greater 
than 50m, low skew cable may also be required to avoid colour fringing ef-
fects within the video image.
• Do not connect the local unit, via CATx cable, to anything other than the remote 
unit.
Video and USB 
connections to the 
host computer
Video connection  
to the display 
screen
Video sharpness adjustment
The remote module has a video adjustment to 
control picture sharpness on the display screen. 
To adjust video sharpness
1 On the computer, display a suitable high 
contrast image (ideally with one or more black 
vertical lines on a white background (e.g. a 
capital 'H' at 72 points in a word processor).
2 Insert a small screwdriver into the adjustment 
screw on the side of the remote module.
3 Turn the screw fully clockwise - you should see 
a bright white shadow to the right of your high 
contrast image 
4 Turn the screw anti-clockwise until the white 
shadow disappears and the edges of your im-
age become sharp.    
High contrast black character on white background
Black or bright white shadow on the right indicates the need for sharpness adjustment
Note: The default DDC data held within the unit supports a range 
of common video resolutions. However, some graphics adapters 
will choose the highest declared resolution and then scale their 
video output to suit, which can result in poor image qual-
ity. If you experience poor quality video, follow the 
instructions in the 'DDC information' section to 
harvest DDC data from your display screen.