Glossary-2 Glossary
Customer
Programming
Software
Software with a graphical user interface containing the feature set of an
ASTRO radio.
D/A See digital-to-analog conversion.
DAC See digital-to-analog converter.
Data terminal
equipment
Data terminal equipment; for example, a computer.
default A pre-defined set of parameters.
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.
digital-to-analog
conversion
Conversion of a digital signal to a voltage that is proportional to the input
value. See also A/D.
digital-to-analog
converter
A device that converts digital data into analog signals. See also ADC.
Digital Private-Line A type of digital communication that utilizes privacy call, as well as
memory channel and busy channel lock-out to enhance communication
efficiency.
digital signal
processor
A microcontroller specifically designed for performing the mathematics
involved in manipulating analog information, such as sound, that has
been converted into a digital form. DSP also implies the use of a data
compression technique.
digital signal
processor code
Object code executed by the Digital Signal Processor in an ASTRO
subscriber radio. The DSP is responsible for computation-intensive
tasks, such as decoding ASTRO signaling.
DPL See Digital Private-Line. See also PL.
DSP See digital signal processor.
DSP code See digital signal processor code.
DTE See Data terminal equipment.
EEPOT Electrically Programmable Digital Potentiometer.
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.
Term Definition