Glossary-2 Glossary
codeplug Firmware that contains the unique personality for a system or device. A 
codeplug is programmable and allows changes to system and unit 
parameters. See also firmware.
coder/decoder A device that encodes or decodes a signal.
CPS See Customer Programming Software.
Customer 
Programming 
Software
Software with a graphical user interface containing the feature set of an 
ASTRO radio. See also RSS.
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.
Term Definition