© MuxLab Inc. 2010
94-000675-A
SE-000675-A
8495 Dalton Road, Mount Royal, Quebec, Canada. H4T 1V5
Tel: (514) 905-0588 Fax: (514) 905-0589
Toll Free (North America): (877) 689-5228
E-mail: [email protected] URL: www.muxlab.com
Symptom
Probable Causes
Possible Solutions
No continuity in video link
Verify cable continuity between baluns.
Power off
Check power supplies of VGA equipment.
No video
PC settings
Perform diagnostics on your VGA equipment
by following the manufacturer’s instructions.
Image distorted or skewed.
Specific display unable to sync
up
Follow RESET procedure in manual to force
display to sync up correctly.
Image not stable
Defective link or equipment
Verify VGA equipment interface integrity.
Unusual colors
Reversed polarity
Ensure wiring is straight-through polarity.
Background pattern
EMI interference
Identify possible radiating frequency sources
Try to isolate them from the video. Use
shielded twisted pair grounded at both ends.
Smearing
Exceeded distance
Verify cable grade. Use higher grade cable.
Exceeded distance
Verify cable grade. Use higher grade cable if
necessary. Adjust contrast on monitor.
Weak contrast
Unusual link attenuation
Verify cable distance using cable tester.
Horizontal bars moving upward
in background
Ground loop problem
Assure that PC and Monitor are connected to
the same ground. Disconnect PC or monitor
from the ground.
1 to 2 pixel object random
dislocation
High noise level in the room.
Distance exceeded.
Set another resolution and refresh rate.
Review connectivity.
Slight variance in hue between
left and right display margins
Slight background noise
Connect ground terminal to earth ground.
Shaking image
Possible ground loop problem
Disconnect gnd terminal from earth ground.
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).
