Installation guide

Glossary
148
890 USE 101 00 October 2006
cable shield The outer conductor of a coaxial cable used to protect the signal on the cable from
noise.
cable sweep A test that assures proper network response within a given frequency range.
carrier detect A status LED indicating the presence of activity on the network.
CATV Community antenna television
center conductor The center wire in a coaxial cable, usually made of copper or copper-clad metal.
characteristic
impedance
The ratio of signal voltage to signal current on a transmission line.
coaxial cable A type of transmission line having a center conductor surrounded by an insulator (a
dielectric), then an outer shield.
COMM ACTIVE A status LED indicating that the modem is communicating.
COMM ERROR A status LED indicating that the modem has detected an error in the message.
COMM READY A status LED indicating that the modem is able to communicate.
communications The transmitting and receiving of messages between nodes (intelligent devices) on
the network.
core The center region of a coaxial or fiber optic cable through which the signal is
transmitted.
data field The data portion of a message frame, containing the rudimentary command or data.
destination
address
The part of the RIO message that defines the address of the destination node.
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This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com