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.
ALC
See automatic level control.
analog
Refers to a continuously variable signal or a circuit or device designed
to handle such signals.
See also digital.
analog-to-digital
conversion
Conversion of an instantaneous dc voltage level to a corresponding
digital value.
See also D/A.
analog-to-digital
converter
A device that converts analog signals into digital data.
See also DAC.
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
See baseband interface port.
baseband interface
port
Synchronous serial interface to the transceiver board used to transfer
transmit and receive audio data.
BGA
See ball grid array.
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
See coder/decoder.
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.
Summary of Contents for APX 6000
Page 1: ...APX TWO WAY RADIOS APX 5000 APX 6000 APX 6000XE SRX 2200 Detailed Service Manuals ...
Page 2: ......
Page 6: ...iv Document History Notes ...
Page 20: ...xviii CommercialWarranty Notes ...
Page 26: ...2 4 Radio Power DC Power Routing VOCON Board Notes ...
Page 100: ...3 74 Theory of Operation Bluetooth Notes ...
Page 172: ...5 66 Troubleshooting Charts PA Failure Notes ...
Page 250: ...6 78 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 276: ...7 26 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 300: ...8 24 Schematics Boards Overlays and Parts Lists Transceiver RF Boards VHF Notes ...
Page 336: ...8 60 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 Notes ...
Page 378: ...8 102 Schematics Boards Overlays and Parts Lists Transceiver RF Boards 700 800 MHz Notes ...
Page 432: ...Glossary 10 Glossary Notes ...
Page 437: ......