Technical Manual
Table Of Contents
- Front Cover
- Foreword
- Table of Contents
- Safety
- ASTRO Digital XTS 3000 Model Chart (“A” Models)
- Portable Radio Model Numbering System
- ASTRO Digital XTS 3000 Model Chart (”B” Models)
- ASTRO Digital XTS 3000 R (Ruggedized) Model Chart
- ASTRO Digital XTS 3000 R (Ruggedized) Yellow Model Chart
- Model History Tables
- Glossary
- Introduction
- General Overview of an ASTRO Digital XTS 3000 Radio
- Radio Power
- VHF/UHF Transceiver Board Detailed Theory of Operation
- 800MHz Transceiver Board Detailed Theory of Operation
xxi
Glossary
A/D Analog to Digital converter; converts an instantaneous dc voltage level to a
corresponding digital value.
ABACUS IC Custom integrated circuit providing a digital receiver IF backend.
ADSIC ABACUS/DSP Support IC; custom integrated circuit providing peripheral
functions for the DSP.
ALC 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.
CBI Controller Board Initialization; a process by which a replacement Controller
Board can be initialized with the serial number of the radio into which it will
be installed. This initialization is a one-shot process, and must therefore be
approached with care.
D/A Digital to Analog converter; converts a digital value to a corresponding dc
voltage value.
DTMF Dual Tone Multi-Frequency
DPL Digital Private-Line™
DSP Digital Signal Processor; microcontroller specifically tailored for signal
processing computations. In this case refers specifically to Motorola
DSP56001.
DSP Code Digital Signal Processor Code; object code executed by the Digital Signal
Processor in an ASTRO or XTS3000 subscriber radio. The DSP is responsible
for computation-intensive tasks, such as decoding ASTRO signalling
Firmware Code executed by an embedded processor such as the Host or DSP in a
subscriber radio. This type of code is typically resident in non-volatile memory
and as such is more difficult to change than code executed from RAM.
FGU Frequency Generation Unit
FLASHcode A 13-digit code which uniquely identifies the System Software Package and
Software Revenue Options that are enabled in a particular subscriber radio.
FLASHcodes are only applicable for radios which are upgradeable through the
FLASHport process.
FLASHport™ A Motorola term that describes the ability of a radio to change memory. Every
FLASHport radio contains a FLASHport EEPROM memory chip that can be
software written and rewritten to, again and again.
Host Motorola HC11F1 microcontrol unit U204 (see MCU).
Host Code Object code executed by the Host Processor in an ASTRO or XTS3000
subscriber radio. The Host is responsible for control-oriented tasks such as
decoding and responding to user inputs.