Motorola XTS 2500 Service Manual page 907

Glossary
Term
Repeater
RESET
RF PA
RSS
RPT/TA
RX DATA
Serial
Communication
Interface Input Line
(SCI IN)
Signal Qualifier
Mode
SCI IN
Smart RIB
Softpot
Software
SPI
Squelch
SRAM
SSI
Standby Mode
System Central
Controllers
System Select
6816985H01-F
Remote transmit/receive facility that re-transmits received signals in
order to improve communications coverage.
Reset line; an input to the microcontroller that restarts execution.
Radio Frequency Power Amplifier. Amplifier having one or more active
devices to amplify radio signals.
Radio Service Software.
RePeaTer/Talk-Around.
Recovered digital data line.
A full-duplex (receiver/transmitter) asynchronous serial interface.
An operating mode in which the radio is muted, but still continues to
analyze receive data to determine RX signal type.
Serial Communication Interface INput line.
Smart Radio Interface Box; a service aid that enables communications
between the radio and the computer's serial communications adapter.
Used in conjunction with the RSS to read the DSP Code, FLASHcode,
Host Code, and model number.
Software potentiometer; a computer-adjustable electronic attenuator.
Computer programs, procedures, rules, documentation, and data
pertaining to the operation of a system.
Serial Peripheral Interface; how the microcontroller communicates to
modules and ICs through the CLOCK and DATA lines.
Muting of audio circuits when received signal levels fall below a pre-
determined value.
Static-RAM chip used for volatile, program/data memory.
Synchronous Serial Interface on the DSP, consisting of six signals and
used for an RX and TX modulated data interface to the KRSIC.
An operating mode whereby the radio is muted but still continues to
monitor data.
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).
Definition
Glossary-3
February 14, 2012