© MuxLab Inc. 2010
2.
To install the balun in a single back box, choose a back box
with a depth of 40 mm or more. Connect the RJ45 plug into
the rear of the balun. Secure the balun with the 2 front
screws.
3.
Place a Decora® faceplate (not included) and secure with
the 2 front screws.
4.
Plug one (1) balun into the S-Video/stereo audio output of
the video source according to the color code of the RCA
connectors.
5.
Plug the second balun into the S-Video/Hi-Fi Wall Balun input of the video screen
or receiver at the remote end.
6.
Complete the connection between the two baluns, using standard Cat 5E/6 twisted
pair cable and connecting hardware, terminated on RJ45 plugs at both ends. Ensure
that there are no split pairs or taps.
7.
Power-on the audio-video equipment. Check the image quality and refer to the
troubleshooting table below if the image quality is unsatisfactory. The following
diagram shows a typical installation.
500038-WP-US
500038-WP-UK
Front view
Side view
Rear view
Troubleshooting
The following tables describe some of the symptoms, probable causes and possible
solutions in respect to the installation of the Stereo Hi-Fi Video Wall Balun:
Video Symptom
Probable Cause
Possible Solutions
No continuity in video
link
Verify cable continuity between pairs of
baluns.
Power off
Check power supplies of video equipment.
No video
Improper connection
and/or swapped pair
Check that baluns are connected to correct
video inputs and outputs.
Unusual colors
Reversed polarity
Check wiring and ensure straight-through
polarity
Background
pattern
EMI interference
Identify possible radiating frequency sources
(
i.e.
, wireless LANs, switching power
supplies). Try to isolate them from the video
connection. Use shielded twisted pair grounded
at both ends.
Smearing
Exceeded distance
Verify cable grade. Use higher-grade cable if
necessary.
Exceeded distance
Verify cable grade. Use higher-grade cable if
necessary. Increase contrast on monitor.
Weak contrast
Unusual link attenuation
Verify cable distance using ohmmeter or cable
tester.
Image not stable
Defective link or
equipment
Verify video equipment interface integrity.
Horizontal bars
moving slowly
Substantial crosstalk
between multiple video
sources
Consecutively turn off other video sources to
determine which video source is the cause of
interference.
Snowy picture
Distance is near limit
Verify cable grade. Use higher-grade cable if
necessary. Reduce color intensity at monitor.
Audio Symptoms
Probable Causes
Possible Solutions
EMI interference
Check that wiring is not too close to
transformers and ballasts.
Poor audio quality
Split pair
Ensure that the UTP pairs are not split and that
each pair of wires is twisted.
No power
Check your audio system for power.
Open circuit
Check wiring to ensure continuity
No audio
Defective balun
Change S-Video/Hi-Fi Baluns for another pair.
Audio phase
cancellation
Reversed wires
Check for straight-through wiring.
Audio weak
Distance specifications
exceeded
Check DC loop resistance and verify if distance
spec is exceeded. Reduce cable length or
eliminate high-loss components.
If you still cannot diagnose the problem, please call MuxLab Customer Technical
Support at 877-689-5228 (toll-free in North America) or (+1) 514-905-0588
(International).
