Troubleshooting
Symptom
Probable Causes
Possible Solutions
Image not stable
Defective link or
equipment
Verify source and destination equipment and
cabling
Unusual colors
Reversed polarity
Verify the pinout on both the send and
receive baluns match. Try swapping pairs.
Smearing or weak
video contrast
Exceeded cable
distance
Verify cable grade and total cabling distance
Horizontal bars
moving upward in
background
Ground loop
problem
Verify the source and destination equipment
are at the same ground potential. Ground the
source and destination equipment.
Shaking image
Ground loop
problem
Verify the source and destination equipment
are at the same ground potential. Ground the
source and destination equipment.
Variance in hue
EMI interference
Identify possible radiating frequency sources
and isolate them from the cabling. Use
shielded twisted pair cabling.
Background
pattern
EMI interference
Identify possible radiating frequency sources
and isolate them from the cabling. Use
shielded twisted pair cabling.