Chapter 2 Overall Characteristics; Introduction; Transceiver Board; Figure 2-1. Xts 5000 Overall Block Diagram - Motorola ASTRO XTS 5000 Detailed Service Manual

Chapter 2 Overall Characteristics

2.1

Introduction

The ASTRO XTS 5000 radio is a dual-mode (digital/analog), microcontroller-based transceiver
incorporating a digital signal processor (DSP). The microcontroller handles the general radio control,
monitors status, and processes commands input from the keypad or other user controls. The DSP
processes the typical analog signals, and generates the standard signaling digitally to provide
compatibility with existing analog systems. In addition, the DSP provides digital modulation
techniques, utilizing voice encoding techniques with error correction schemes. This provides the
user with enhanced range and audio quality, all in a reduced bandwidth channel requirement. It
allows embedded signaling, which can mix system information and data with digital voice to support
a multitude of system features.
The three ASTRO XTS 5000 radio models (I, II, and III) are available in the 700/800 MHz (764 to 869
MHz) band.
The ASTRO XTS 5000 radio
• Vocoder/controller (VOCON) board
• Band-dependent transceiver (RF) board
• Universal flex assembly
• Display and keypad assemblies (models II and III only)
• Encryption board (secure models only)
External
Accessory
Connector
26
Note:
indicates 26
wires
(Figure 2-1) consists of the following:
Universal
Flex
13
J1 P101
(Side Connector,
Controls, LEDs,
Speaker,
Microphone)
22
Keypad
Display

Figure 2-1. XTS 5000 Overall Block Diagram

26
P201
40
J101
VOCON
Board
J107
40
J701
22
J301
Antenna
P1 J2
Transceiver
Board
3
J3
Battery
Encryption
Module
(Optional)
MAEPF-27277-O
7.5V