Crestron
CAT5 Wiring
Reference
Guide
MHz, MegaHertz:
A unit of frequency denoting one million Hertz (i.e., 1,000,000
cycles per second).
N
Near-End Crosstalk (NEXT):
Electrical noise coupled from one pair of wires to
another within a multi-pair cable.
P
Power Sum:
The combined performance of all cable pair combinations to ensure
enough headroom to handle crosstalk.
Propagation Delay:
The time between when a signal is transmitted and received on
the other end, measured in nanoseconds.
R
RG6:
Coaxial 75 ohm cable.
S
Standards:
Agreed principles of protocol. Committees working under various trade
and international organizations set industry standards.
S-video:
Method of transmitting video signals by separating out the chrominance
(color) and luminance (brightness) portions of the video signal resulting in superior
picture quality versus composite video.
T
T1:
A standard for digital transmission in North America. A digital transmission link
with a capacity of 1.544 Mbps (1,544,000 bits per second.) T1 lines are used for
connecting networks across remote distances. Bridges and routers are used to
connect LANs over T1 networks.
Twisted Pair:
Two insulated copper wires twisted around each other to reduce
induction (thus interference) from one wire to the other.
U
UTP:
Unshielded Twisted Pair.
Numeric
100BASE-T:
The IEEE standard that defines the requirement for sending
information at 100 Mbps on unshielded twisted-pair cabling.
References
Category 5E information courtesy of:
•
The Siemon Company
•
Southwire Cyber Technologies, Inc.
•
Hubbell-Premise.com
•
Microtest
•
LANshack.com
•
Acteon.net
Reference Guide – DOC. 6137A
Crestron CAT5 Wiring
•
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