Appendix E: UTP Cablingxxx | xxx124
installations utilizing UTP cable specifications. The SCS system supports either
of these wiring standards. The following table describes the standards for each
pin.
Pin EIA/TIA 568A EIA/TIA 568B
1 white/green white/orange
2 green orange
3 white/orange white/green
4 blue blue
5 white/blue white/blue
6 orange green
7 white/brown white/brown
8 brown brown
Table E.1: UTP wiring standards
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 meters each.
• Maintain the twists of the pairs all the way to the point of termination, or
no more than one-half inch untwisted. Do not skin off more than one inch
of the 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.
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