LE-3xx/LE-4xx Hardware Installation & User Guide
35
CABLE INSTALLATION AND GUIDELINES
2
This guide assumes that the site's data cables have been properly installed in a centrally wired
distribution configuration. When installing fiber optics cables and other network cabling, always
have them installed and tested by a technician who is certified by the Electronics Industry
Association/Telecommunications Industry Association (EIA/TIA). This ensures a quality
installation and presents one less variable to consider when troubleshooting.
When installing cable,
Do:
•
Use more cable than required, leaving some slack.
•
Test each section of the network as it is installed. Even in new installations, problems
may occur that will be difficult to isolate later.
•
Cover cables with cable protectors if it is necessary to run cables across the floor.
•
Label both ends of all cables.
•
Use cable ties or Velcro tie wraps to secure cables. If staples are used, they must be
hand installed or use a depth stop.
•
Use cable hangers and J-hooks.
Do
NOT
:
•
Use electrical tape or any other type of tape to secure cables.
•
Overstress cables by over tightening cable ties or stapling cables to the point where
crushing is visible. This is particularly applicable for fiber optic cables.
•
Exceed the minimum bending radius for fiber optic cables.
•
Install cables near sources of electrical interference. All twisted pair wires must be at
least 3 feet away from fluorescent light boxes and other sources of electrical
interference such as a power source. Fiber optic cables are not affected by electrical
interference.
•
Run cable in power conduits or air plenums.
Connecting Cables to the Device
When connecting cables to the device, always make only one connection at a time. In general,
connect fiber cables first, then connect the Cat 5 cables. If using a patch panel, connect the
patch panel cables last.
UTP Cables
In order for two 10/100BASE-TX devices to receive and send data to each other, the transmit
ports of the first device must be connected to the receive ports of the second device. This
connection can be made using a straight through cable or a crossover cable.
Fiber Optic Cables
If installing pluggable transceiver optics, please refer to the
Transceiver Installation
section
on page 33 for additional information.
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