Motorola ASTRO XTL 5000 Basic Service Manual page 192

Glossary-8
Term
Signal Qualifier
mode
softpot
software
software
potentiometer
spectrum
SPI
squelch
SRAM
SSI
Standby mode
static RAM
Synchronous Serial
Interface
system central
controllers
thin small-outline
package
TIB
time-out timer
TOT
transceiver
transmitter
TSOP
TX
October 30, 2006
An operating mode in which the radio is muted, but still continues to
analyze receive data to determine RX signal type.
See software potentiometer.
Computer programs, procedures, rules, documentation, and data
pertaining to the operation of a system.
A computer-adjustable electronic attenuator.
Frequency range within which radiation has specific characteristics.
See Serial Peripheral Interface.
Muting of audio circuits when received signal levels fall below a pre-
determined value. With carrier squelch, all channel activity that exceeds
the radio's preset squelch level can be heard.
See static RAM.
See Synchronous Serial Interface.
An operating mode in which the radio is muted but still continues to
monitor data.
A type of memory used for volatile, program/data memory that does not
need to be refreshed.
DSP interface to peripherals that consists of a clock signal line, a frame
synchronization signal line, and a data line.
Main control unit of the trunked dispatch system; handles ISW and
OSW messages to and from subscriber units (See ISW and OSW).
A type of dynamic random-access memory (DRAM) package that is
commonly used in memory applications.
Transceiver Interface Board. Provides connectivity between transceiver
and the CAN cable. Also, interface for accessories when TIB is used on
a highpower transceiver.
A timer that limits the length of a transmission.
See time-out timer.
Transmitter-receiver. A device that both transmits and receives analog
or digital signals. Also abbreviated as XCVR.
Electronic equipment that generates and amplifies an RF carrier signal,
modulates the signal, and then radiates it into space.
See thin small-outline package.
Transmit.
Definition
6871769L01-A