Avocent DSR Installer/User Manual page 125

115 DSR® Switch Installer/User Guide
Pin EIA/TIA 568A
5 white/blue
6 orange
7 white/brown
8 brown
Cabling installation, maintenance and safety tips
The following is a list of important safety considerations that should be reviewed prior to
installing or maintaining your cables:
• Keep all UTP runs to a maximum of 30 feet each.
• Maintain the twists of the pairs all the way to the point of termination, or no more that
one-half inch untwisted. Do not skin off more than one inch of jacket while terminating.
• If bending the cable is necessary, make it gradual with no bend sharper than a one inch
radius. Allowing the cable to be sharply bent or kinked can permanently damage the
cable's interior.
• Dress the cables neatly with cable ties, using low to moderate pressure. Do not over tighten
the ties.
• Cross-connect cables where necessary, using rated punch blocks, patch panels and
components. Do not splice or bridge the cable at any point.
• Keep the UTP cable as far away as possible from potential sources of EMI, such as
electrical cables, transformers and light fixtures. Do not tie the cables to electrical conduits
or lay the cables on electrical fixtures.
• Always test every installed segment with a cable tester. "Toning" alone is not an
acceptable test.
• Always install jacks so as to prevent dust and other contaminants from settling on the
contacts. The contacts of the jack should face up on the flush mounted plates, or
left/right/down on surface mount boxes.
• Always leave extra slack on the cables, neatly coiled in the ceiling or nearest concealed
location. Leave at least five feet at the work outlet side and 15 feet at the patch panel side.
• Choose either 568A or 568B wiring standard before beginning. Wire all jacks and patch
panels for the same wiring scheme. Don't mix 568A and 568B wiring in the same
installation.
EIA/TIA 568B
white/blue
green
white/brown
brown