Troubleshooting; Common Problems - Black Box AC1000A User Manual

CAT5 MULTI VGA SYSTEM

4.1. Common Problems

In most cases, nearly every issue with the CAT5 Multi VGA System can be resolved
by checking the CAT5 termination and making sure that it's pinned to the
TIA/EIA 568B wiring specification. However, there may be other problems that
cause the system to not perform as it's designed. Below are solutions to the most
common installation errors.
Problem:
Solution:
Problem:
Solution:
Problem:
Solution:
18

4. Troubleshooting

No video signal at the transmitter local port or at the receiver.
• Check that both units are powered.
• Make sure the CAT5 cable is terminated correctly per the
TIA/EIA 568B wiring specification.
• Is the display device powered on and functioning?
In some cases, the video termination may be mismatched. The
transmitters and receivers ship with 75-ohm termination as the
default. To disable termination, see Appendix B.
Video signal is poor.
• Is the compensation switch on the receiver in the correct
position?
• Check all cable connections.
• The video signal's refresh rate may be set too high. Reset to a
lower refresh rate in your monitor-configuration menu.
• There may be a delay skew issue. Call Technical Support.
Audio is poor.
• Powered speakers are required. Make sure speaker power is
ON.
• Check input source levels from the source device. Make sure
the audio source is not overdriven or underdriven.