Glossary
Glossary
This glossary contains an alphabetical listing of terms and their definitions that are applicable to
ASTRO portable and mobile subscriber radio products.
Term
Definition
A/D
See analog-to-digital conversion.
ABACUS IC
A custom integrated circuit providing a digital receiver intermediate
frequency (IF) backend.
ADC
See analog-to-digital converter.
ADDAG
See Analog-to-Digital, Digital-to-Analog and Glue.
ALC
analog
Refers to a continuously variable signal or a circuit or device designed
to handle such signals.
Analog-to-Digital,
Digital-to-Analog
and Glue
An integrated circuit designed to be an interface between the radio’s
DSP, which is digital, and the analog transmitter and receiver ICs.
analog-to-digital
conversion
Conversion of an instantaneous dc voltage level to a corresponding
digital value.
analog-to-digital
converter
A device that converts analog signals into digital data.
automatic level
control
A circuit in the transmit RF path that controls RF power amplifier output,
provides leveling over frequency and voltage, and protects against high
VSWR.
band
Frequencies allowed for a specific purpose.
BBP
baseband interface
port
Synchronous serial interface to the transceiver board used to transfer
transmit and receive audio data.
BGA
ball grid array
A type of IC package characterized by solder balls arranged in a grid
that are located on the underside of the package.
CODEC
codeplug
A memory chip inside a device that contains various programmable
parameters, including frequencies, time-out timer, and so on.
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