March 23, 2006 6816812H01
Glossary-2
CPS See Customer Programming Software.
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.
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 communications 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 Data terminal equipment: i.e., a computer.
DTMF See dual tone multi-frequency.
dual tone multi-
frequency
The system used by touch-tone telephones. DTMF assigns a specific
frequency, or tone, to each key so that it can easily be identified by a
microprocessor.
FCC Federal Communications Commission.
Term Definition
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