Glossary Glossary
This glossary contains an alphabetical listing of terms and their definitions that are applicable to the
ASTRO radio.
Term Definition
analog Refers to a continuously variable signal or a circuit or device designed
to handle such signals. See also digital.
band Frequencies allowed for a specific purpose.
CPS See Customer Programming Software.
Customer
Programming
Software
Software with a graphical user interface containing the feature set of an
ASTRO radio.
default A pre-defined set of parameters.
D.E.K Direct Entry Keyboard.
digital Refers to data that is stored or transmitted as a sequence of discrete
symbols from a finite set; most commonly this means binary data
represented using electronic or electromagnetic signals. See also
analog.
EEPROM See Electrically Erasable Programmable Read-Only Memory.
Electrically Erasable
Programmable
Read-Only Memory
A special type of PROM that can be erased by exposing it to an
electrical charge. An EEPROM retains its contents even when the
power is turned off.
FCC Federal Communications Commission.
firmware Code executed by an embedded processor such as the Host or DSP in
a subscriber radio. This type of code is typically resident in non-volatile
memory and as such is more difficult to change than code executed
from RAM.
frequency Number of times a complete electromagnetic-wave cycle occurs in a
fixed unit of time (usually one second).
kHz See kilohertz.
kilohertz One thousand cycles per second. Used especially as a radio-frequency
unit.
MCU See microcontroller unit.
MHz See Megahertz.
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