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5.
If digital audio is to be connected (optional), connect an RCA lead between
the balun and the digital audio equipment at both ends.
6.
Power-on the component video equipment. Check the image quality and refer
to troubleshooting if the image quality is unsatisfactory.
Troubleshooting
Video
Symptom
Probable Causes
Possible Solutions
No video
No continuity in video link
Verify cable continuity between
pairs of baluns.
No video
Power off
Check power supplies of video
equipment.
No video
Improper connection 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.
Weak contrast
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.
Rolling horizontal bars or
other interference
Improper grounding
Confirm that either the send or
destination side is grounded. If
the source device, cable run, and
output device are all floating,
ground the chassis of the source
or output device.
Smearing
Exceeded distance
Verify cable grade. Use higher
grade cable if necessary.
Digital Audio
Symptom
Probable Causes
Possible Solutions
No audio
Distance exceeded
Verify cable length between the two
baluns.
No audio
Split pair
Check if the UTP pairs are split and
correct. Each signal pair must be
twisted.
No audio
Power-off.
Check power supplies of digital audio
equipment.
Missing channels
Cabling problem between
the decoder/amp and the
audio speakers.
Check audio speaker cabling. Verify
Content is multi-channel and decoder is
working when attached straight through.
Noise, static
EMI interference.
Check that wiring is not too close to
transformers and ballasts.
Noise, static
Distance exceeded or
unusual cable attenuation
Check cable distance and cable grade.
AVO-V3AD-F System Diagram
