49
8.1.4 V
IDEO
The picture is not sharp, or is badly smeared.
1. The video compensation might not be set correctly. See
Section 6.4
.
2. Check the interconnect cable between the Extender’s Local and Remote
Units. Is it solid-core cable, rated as Category 5? (It might be possible to use
CAT5e at distances up to 120 m [400 ft.], but video will degrade if it’s run
across lengths of CAT5e greater than that.) Is the cable intact along its length
and securely connected at both ends? And is it wired correctly? (Compare the
cable’s specs with those listed in
Section 4.2.5
and its wiring with that shown
in
Appendix A
.)
3. Check the video-extension cabling, patch-panel video connections, and other
video connections in the system. Make sure everything is properly and
securely attached.
4. Are you using an LCD panel? You might need to reduce the refresh rate
of your graphics card’s output.
Each character has separated into overlapping sets of red, green, and blue pixels; the effect is
like trying to watch a 3-D movie without 3-D glasses.
1. Check the interconnect cable between the Extender’s Local and Remote
Units. Is it solid-core cable, rated as Category 5? Is it intact along its length
and securely connected at both ends? And is it wired correctly? (Compare the
cable’s specs with those listed in
Section 4.2.5
and its wiring with that shown
in
Appendix A
.)
2. Check the video-extension cabling, patch-panel video connections, and other
video connections in the system. Make sure everything is properly and
securely attached.
3. The video compensation might not be set correctly. See
Section 6.4
.
4. Check the settings of the Remote Unit’s distance jumpers; you might need
to try a higher setting. See
Section 5.1
.
The monitor sometimes loses sync, causing it to go blank for a second or two.
This could happen if your electrical power system is very noisy (particularly on the
ground lead). Also, don’t route your interconnect cable anywhere near power lines
or other powerful sources of interference such as generators, motors, or
fluorescent lights. If this is a persistent problem, please discuss it with Black Box
Technical Support.
CHAPTER 8: Troubleshooting
