November 11, 2004 6881094C12-A
Glossary-2
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.
CTS See clear to send.
Customer
Programming
Software
Software with a graphical user interface containing the feature set of a
radio. See also RSS.
D/A See digital-to-analog conversion.
DAC See digital-to-analog converter.
debounce time An amount of time (which is set using a hardware device or software)
that ensures that only a single signal will be acted upon for a single
opening or closing of a contact.
deemphasis In an FM transmission, the process of restoring the amplitude-versus-
frequency characteristics of the signal.
default A pre-defined set of parameters.
deviation The difference, usually the absolute difference, between a number and
the mean of a set of numbers, or between a forecast value and the
actual value.
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 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 a subscriber
radio. The DSP is responsible for computation-intensive tasks, such as
decoding ASTRO signaling.
DSP See digital signal processor.
DSP code See digital signal processor code.
Term Definition