Motorola ASTRO XTS 5000 Detailed Service Manual page 320

Glossary-8
Term
signal
Signal Qualifier
mode
SIO IC
Smart Radio
Interface Box
softpot
software
software
potentiometer
spectrum
SPI
squelch
SRAM
SRIB
SSI
Standby mode
static RAM
Synchronous Serial
Interface
system central
controllers
system select
talkaround
thin small-outline
package
July 21, 2004
An electrically transmitted electromagnetic wave.
An operating mode in which the radio is muted, but still continues to
analyze receive data to determine RX signal type.
See Serial Input/Output IC.
A service aid containing microcontroller buffered RAM that enhances
the speed and capability of programming a radio with programming
software.
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 Smart Radio Interface Box.
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).
The act of selecting the desired operating system with the system-select
switch (also, the name given to this switch).
A conventional radio feature that lets you bypass the repeater and
connect directly to another radio. The transmit and receive frequencies
are the same.
A type of dynamic random-access memory (DRAM) package that is
commonly used in memory applications.
Definition
6881094C31-C