© MuxLab Inc. 2010
Installation
To install the S-Video/Audio GLI Balun, perform the following steps:
1.
Only one (1) S-Video/Audio GLI Balun is required in the link. The other balun may be any
MuxLab standard (non-GLI) S-Video balun.
2.
Typically the S-Video/Audio GLI Balun is installed at the monitor side.
3.
Identify the pin configuration of the baluns. Two (2) twisted pairs are required for S-Video
and two (2) twisted pairs are required for stereo analog audio. The pin configuration follows
the EIA/TIA 568A or B standard. The S-Video/Audio GLI Balun is reverse polarity sensitive.
Please ensure that wiring is straight through (Ring to Ring, Tip to Tip).
2.
Turn off power and disconnect the S-Video source and S-Video monitor.
3.
Make certain that modular outlets and cross connects to which you will connect the S-Video
baluns are configured properly and labeled appropriately to identify the circuit.
4.
Verify that the desired twisted pairs are not being used for other LAN or telephone equipment.
5.
Connect the audio connectors to the audio source via RCA stereo audio jumper cables.
Caution:
Respect colors appearing on color-coded RCA jacks and plugs in order to ensure
the stereo effect is maintained.
6.
Connect a standard (non-GLI) S-Video balun to the S-Video port of the source equipment (i.e.
DVD or STB).
7.
Connect a Cat 5e/6 cable from the RJ45 jack on the S-Video/Audio Balun to the twisted pair
cabling of the building.
8.
At the destination point, connect the S-Video/Audio GLI Balun to the S-Video display.
9.
Connect the audio connectors to the line-level RCA audio inputs at the receiver via the RCA
stereo audio jumper cable included with the product.
10.
Connect the other end of the Cat 5e/6 cable to the RJ45 jack of the S-Video/ Audio GLI
Balun.
11.
Power on the S-Video/ Audio equipment at both ends and adjust the monitor image and audio
levels to the desired settings. The figure below shows a typical application.
Troubleshooting
The following tables describe some of the symptoms, probable causes and possible solutions
regarding the S-Video/Audio GLI 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 lighting 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 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
specification 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).
