G-1
GLOSSARY OF TERMS
Term DeÞnition
Active Scan State The state when the radio is in Scan Mode, and when the radio is rapidly moving
through the Scan List Member channels looking for eligible transmission activ-
ity.
Busy Channel
Lockout (BCL)
If BCL is activated, the radio will check for channel activity before transmitting.
If activity is detected, transmission is prohibited. For carrier squelch mode, ra-
dio will not transmit, if it is receiving carrier. For coded squelch mode, it will not
transmit, if it is receiving carrier with different PL/DPL code.
Carrier An electromagnetic signal that is transmitted on a selected frequency for the
purpose of carrying voice or data transmissions along with it. Carrier can then
be received by all radios listening on that frequency.
Carrier Squelch
(CSQ)
When the carrier energy exceeds the carrier energy threshold, known as the
Squelch Level, the radio unmutes.
CD Compact Disk.
Channel A single path separated by frequency or time divisions used for transmitting
and/or receiving voice and/or data.
Channel Alias Channel Aliases are radio-user descriptions for the radioÕs channels. Alpha-
bets, numbers, spaces, Ò+Ó, Ò-Ó, and Ò/Ó can be used. Examples: EMT-001, 500,
SECURITY.
Channel Bandwidth The channel spacing when operating on the current channel.
Channel Enabled When selected, the channel is enabled and accessible.
Coded Squelch When the channel receives incoming message that contains the same PL or
DPL code as its Rx PL/DPL code, the radio unmutes.
Codeplug A solid-state chip inside a radio where the radioÕs personality data is stored.
Communications
Port (COM Port)
A serial hardware interface connection at the back of a computer used to com-
municate with other hardware devices, such as radios, modems, and printers.
Also known as a Serial Port. COM Ports are designated by slot positions such
as Port1, Port2, Port3, Port4.
When programming a radio, the computer is connected to the radio with a RIB
cable via the COM port. The computerÕs CPS Com Port settings are indepen-
dent of each other and apply to the Read and Write features.
CPS Acronym for Customer Programming Software. Licensed Motorola software
used to program two-way radios with a unique set of features.
CSQ Carrier Squelch.
CTCSS Acronym for Continuous Tone Coded Squelch System. A generic term for sub-
audible tone/ code used to create communications groups. Also see PL.
Digital Private Line
(DPL)
DPL is a digital format transmitted along with the carrier. DPL allows for more
use and privacy on a frequency. DPL is transmitted at a sub-audible (not able
to be heard) frequency.
DPL Digital Private-Lineª
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