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

© MuxLab Inc. 2010
3. 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.
4. Place a Decora® faceplate (not included) and secure
with the 2 front screws.
5. Plug one (1) balun into the component video output of
the audio-video source according to the color code of
the RCA cables and jacks.
6. If Stereo Audio is to be connected (optional), connect
left/right RCA jumper cables between the balun and
the stereo audio equipment at both ends.
7. 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/Stereo 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 or faulty
UTP cable or crimping
Verify cable. 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.
Slowly moving noise or
horizontal bars
Missing ground (GND)
Ensure that at least the video source or display has a
3-prong AC power plug, grounded antenna coax cable
or any grounded device in the link that can help clear
up the interference.
A single ground in the link is recommended.
Horizontal hum bars
moving slowly
Substantial cross-talk
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.
Poor image EMI interference
Check that wiring is not too close to transformers,
ballast’s, air conditioners, RF transmitters or similar
equipment.
Use of power conditioner may help.
Audio Symptom Probable Cause Possible Solutions
Missing continuity in the
circuit
Verify and correct the circuit.
No audio
Power-off Check power supplies of audio equip.
Missing channel
Cabling problem between
the sound source and the
audio speakers
Check audio speaker cabling.
EMI interference
Check that wiring is not too close to transformers,
ballasts, air conditioners, RF transmitters or similar
equipment.
Noise, static
Distance exceeded or
unusual cable attenuation Check cable distance and cable grade. Also lifting
GND on transmitter or receiver side may help.
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).