Muxlab Component Video/Analog Audio Wall Plate Balun, US - Manual (Page 2)

© 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 component video coaxial cable
output of the video source according to the color code of the
RCA connectors.
5. Plug the second balun into the component video coaxial cable 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. If analog audio is to be connected (optional), connect an RCA lead between the
balun and the analog audio equipment at both ends.
8. Power-on the component 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.
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 Component Video/Analog Audio 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 pairs 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 Symptom Probable Cause 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 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).