Service manual

99R85452E01-O August 30, 2002
Glossary-5
Reverse Burst /
Turn Off Code
Causes a Tone Private Line (TPL) or Digital Private Line (DPL) code to
be transmitted at the end of a transmission - once PTT is released, and
while operating on the current channel. This sub-audible tone causes
the receiving radio to mute its speaker before loss of a carrier is
detected. Muting the speaker eliminates unwanted noise (squelch tail)
during loss of carrier detection.
ROM Read Only Memory.
RSSI Received Signal-Strength Indicator: a dc voltage proportional to the
received RF signal strength.
RPT/TA Repeater/Talk-Around.
Rx DPL Code The specific code accepted when receiving Digital Private Line (DPL)
encoding, while operating on the current channel.
Rx DPL Invert Setting Rx DPL Invert causes Digital Private Line (DPL) signals to be
inverted when they are received by the radio, while operating on the cur-
rent channel. Inverted coding allows for more traffic/usage on frequen-
cies.
Rx TPL Frequency A designated frequency used when receiving Tone Private Line (TPL),
while operating on the current channel. This frequency can directly cor-
relate to the Rx TPL Code field; however, non standard code frequen-
cies may also be selected.
Scan List The Scan List determines which channels the radio scans, when operat-
ing in the Scan Mode, on the current channel.
Scan List Member The Scan List allows you to select the grouping of channels that make
up the current Scan List Member channels. This grouping of Scan List
Member channels can then be scanned for transmission activity - one at
a time, when the radio is in Scan Mode. A Scan List can have a maxi-
mum of 16 Scan List Members. Scan List Member scanning priority is
definable. A Scan List can be assigned to a channel. Three Scan Lists
are available. A Scan List can be assigned to more than one channel.
Scan Mode When the radio is in one of the two Scan States: Active Scan and
Landed Scan. This mode is initiated when the programmable SCAN but-
ton is pressed.
Scan Type There are two types of scanning available on the current Conventional
Personality: Normal Scan or Priority Scan.
Serial Number Each radio has its own unique serial number. This information is stored
in the radio’s codeplug.
Short Press
Function
Function that is invoked if the button is pressed and released within one
second.
Softpot Software Potentiometer: a computer-adjustable electronic attenuator.
Software Computer programs, procedures, rules, documentation, and data per-
taining to the operation of a system.
Squelch Muting of audio circuits when received signal levels fall below a pre-
determined value.
Term Definition