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Further information

Troubleshooting

If you experience problems when installing or using the Dual Video Transmitter,
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.
Video image at the remote receiver is distorted or shadows appear to
the right of displayed objects.
Video compensation is required to overcome the delay effects of long twisted
pair wiring, especially when running through a patch panel. If video problems
persist:
• All X-series receivers contain automatic circuitry to overcome all but the
most severe cases. If an X-Series receiver fails to automatically correct a
video problem, try adjusting it manually. For details about manual video
compensation, please refer to the user guide for the X-Series Extenders.
• For non X-Series receivers (which do not have automatic video
compensation), manual video compensation should be performed. Please
refer to the user guide for the receiver.
• If your video image has coloured shadows you may need to use the optional
X-Series Skew Compensator. This stand-alone passive module allows you to
finely tune the red, green and blue video signal timings (each of which is fed
along separate twisted pair sets) to overcome most screen image problems.
In 'two-in, two-out' mode no video image is received on the second
screen.
• Temporarily disconnect the second video link to the Dual Video Transmitter,
connect a monitor directly to the computer secondary video port and check
for a correct video image output on this channel.
Power is applied via the power supply but Dual Video Transmitter (or
remote receiver) 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.
No video image is received at either of the remote receivers.
• Check that the power/activity indicators are lit on the Dual Video Transmitter
as well as the receivers - if they are not, then there is a power problem.
When keys are pressed or the mouse is moved, check that the indicators
flicker – if they do not then there could be a twisted pair link problem or a
problem with one of the modules.
• If possible, try using an alternative twisted pair connection between the Dual
Video Transmitter and the receiver.
• If the receiver is severely over compensated, the monitor may not be able to
display a picture. Try manually reducing the video compensation. Please refer
to the user guide for the receiver.
• Temporarily disconnect the video link to the Dual Video Transmitter, connect
a monitor directly to the computer video port and check for a correct video
image output.

Getting assistance

If you are still experiencing problems after checking the list of solutions in the
Troubleshooting section then we provide a number of other solutions:
• Adder Technology website – www.adder.com
Check the Support section of our website for the latest solutions and driver
files.
• Email – [email protected]
• Fax
in the UK:
01954 780081
in the US:
+1 888 275 1117
• Phone
in the UK:
01954 780044
in the US:
+1 888 275 3337