Theory Of Operation; Introduction; Overview - Motorola GTX/LCS 2000 Service Manual

Theory of Operation

Introduction

Overview

This chapter provides theory of operation information for the radio. It starts with
a block diagram level functional description of the entire radio. This is followed
by a detailed functional description for each of the four major functions that make
up the radio.
This section provides a detailed theory of operation for the radio and its
components.
The main radio is a single board design, consisting of the transmitter, receiver, and
controller circuits.
The control head is mounted directly on the front of the radio. The control head
contains a speaker, LED indicators, a microphone connector, buttons which
provide the user with interface control over the various features of the radio and a
display.
In addition to the power cable and antenna cable, an accessory cable can be
attached to a connector on the rear of the radio. The accessory cable provides the
necessary connections for items such as external speaker, emergency switch, foot
operated PTT, ignition sensing, etc.
7
7
Theory of Operation 7-1