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CHAPTER 4: Troubleshooting
• The System doesn’t include more than 128 video-
destination devices.
• Your CAT5 cables are:
(a) intact;
(b) securely connected to the
correct ports in
your System—for example, cables to output
devices aren’t plugged into input ports and vice
versa;
(c) not run too far—total UTP cabling between
the Local Module and any Remote Module
shouldn’t be longer than 1000 ft. (305 m), total
STP cabling shouldn’t be longer than 800 ft.
(240 m);
(d) not run too close to sources of electrical
interference such as motors, generators,
compressors, and fluorescent lights;
(e) terminated with standard RJ-45 connectors;
and
(f) wired straight-through and pinned and
paired in accordance with EIA/TIA-568B.
If none of these suggestions solves the problem, call
Black Box Technical Support as described in
Section 4.2 .