Motorola ASTRO XTL 5000 Basic Service Manual page 190

Glossary-6
Term
OSW
OTAR
outbound signaling
word
over-the-air rekeying
PA
paging
PC Board
phase-locked loop
PL
PLL
PMR
private-line tone
squelch
Programmable
Read-Only Memory
programming cable
Project 25
PROM
PTT
Publication Manual
Revision
Push-to-Talk
radio frequency
radio frequency
power amplifier
RAM
October 30, 2006
See outbound signaling word.
See over-the-air rekeying.
Data transmitted on the control channel from the central controller to the
subscriber unit.
Allows the dispatcher to remotely reprogram the encryption keys in the
radio.
Power amplifier.
One-way communication that alerts the receiver to retrieve a message.
Printed Circuit Board. Also referred to as a PCB.
A circuit in which an oscillator is kept in phase with a reference, usually
after passing through a frequency divider.
See private-line tone squelch.
See phase-locked loop.
See Publication Manual Revision
A continuous sub-audible tone that is transmitted along with the carrier.
See also DPL.
A memory chip on which data can be written only once. Once data has
been written onto a PROM, it remains there forever.
A cable that allows the CPS to communicate directly with the radio
using RS232 or USB.
See APCO 25.
See Programmable Read-Only Memory.
See Push-to-Talk.
A publication that provides supplemental information for its parent
publication before it is revised and reissued.
The switch or button usually located on the left side of the radio which,
when pressed, causes the radio to transmit. When the PTT is released,
the unit returns to receive operation.
The portion of the electromagnetic spectrum between audio sound and
infrared light (approximately 10 kHz to 10 GHz).
Amplifier having one or more active devices to amplify radio signals.
See random access memory.
Definition
6871769L01-A