Glossary
Glossary
This glossary contains an alphabetical listing of terms and their definitions that are applicable to
ASTRO portable and mobile subscriber radio products. All terms do not necessarily apply to all
radios, and some terms are merely generic in nature.
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
Summary of Contents for ASTRO XTS-5000
Page 7: ...vi Table of Contents November 16 2006 6881094C31 E Notes ...
Page 11: ...x List of Figures November 16 2006 6881094C31 E Notes ...
Page 17: ...November 16 2006 6881094C31 E xvi CommercialWarranty Notes ...
Page 31: ...November 16 2006 6881094C31 E xxx Portable Radio Model Numbering System Notes ...
Page 83: ...November 16 2006 6881094C31 E 3 44 Theory of Operation Encryption Module ...
Page 135: ...November 16 2006 6881094C31 E 5 44 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 175: ...November 16 2006 6881094C31 E 7 32 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 367: ...November 16 2006 6881094C31 E Glossary 10 Notes ...
Page 373: ...Index 6 November 16 2006 6881094C31 E Notes ...