Muxlab S-Video/Audio Balun - Manual (Page 2)

© MuxLab Inc.
Installation
To install the S-Video Balun, perform the following steps:
Caution: Do not attempt to open the housing. There are no user-serviceable parts inside the
VGA Balun. Opening the unit will void your warranty.
1. Turn off power and disconnect the S-Video source and S-Video monitor.
2. Make certain that modular outlets and cross connects to which you will connect the S-Video
Balun are configured properly and labeled appropriately to identify the circuit.
Caution: Do not connect the S-Video Balun to a telecommunication outlet wired to
unrelated equipment. Making such a connection may damage the equipment and/or
the balun. Please ensure that all wiring is “straight-through” twisted pair.
3. Verify that the desired twisted pairs are not being used for other LAN or telephone equipment.
4. The S-Video Baluns operate in pairs.
5. Connect the S-Video Balun (500016 or 500017) to the S-Video port of the source equipment
(i.e., DVD or VCR). If the S-Video/Audio Balun is being installed, connect the audio
connectors to the audio source via RCA-type audio/video jumper cables.
Caution: Do not mount the balun over equipment ventilation openings. Covering the
openings may cause the equipment to overheat.
6. Connect a 4-pair Cat5e/6 cable from the RJ45 8-position modular jack of the S-Video Balun
to the twisted pair cabling of the building. The 500016 requires two pairs. The 500017
requires four pairs if both S-Video and stereo audio are used.
7. At the destination point, connect an S-Video Balun to the S-Video monitor or projector.
8. Connect a 4-pair Cat5e/6 cable from the RJ45 connector of the S-Video Balun to the
appropriate modular wall outlet. See typical application below. If the S-Video/Audio Balun is
being installed, connect the audio connectors to the audio inputs (i.e., loudspeakers) via RCA-
type audio/video jumper cables.
9. Power on the S-Video equipment at both ends and adjust the monitor image and audio levels
to the desired settings.
S-Video Projection Using 500016
S-Video and Audio Using 500017
Troubleshooting
The following tables describe some of the symptoms, probable causes and possible solutions
regarding the S-Video 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 Symptom Probable Cause Possible Solutions
EMI interference Check that wiring is not too close to
Poor Quality Audio
Split pair Correct the UTP pairs if they are split.
Power-off Check power supply.
Open contact Check wiring to ensure continuity. No Audio
Defective Audio Balun Change Audio Baluns for another pair.
Distance exceeds specs
Check DC loop resistance.
Reduce cable length or eliminate high-loss
components.
Weak Audio
Lower grade UTP cable is
introducing high signal
losses.
Use signal repeater for extended distance.
Replace cable by higher grade.