Motorola pro7100 Manuel de service télécharger pdf (Page 7)

TABLE OF CONTENTS

Chapter 1

Introduction

1.1 Scope of Manual ........................................................................................................................... 1-1

1.2 Warranty and Service Support ...................................................................................................... 1-1

1.2.1 Warranty Period ..................................................................................................................... 1-1

1.2.2 Return Instructions ................................................................................................................. 1-1

1.2.3 After Warranty Period ............................................................................................................ 1-1

1.3 Related Documents ...................................................................................................................... 1-2

1.4 Technical Support ......................................................................................................................... 1-2

1.5 Warranty and Repairs.................................................................................................................... 1-2

1.6 Radio Model Chart and Specifications .......................................................................................... 1-4

1.7 Radio Model Information ............................................................................................................... 1-4

Chapter 2

Theory of Operation

2.1 Overview....................................................................................................................................... 2-1

2.2 Controller Section ......................................................................................................................... 2-1

2.2.1 Radio Power Distribution ....................................................................................................... 2-2

2.2.2 Automatic On/Off ................................................................................................................... 2-3

2.2.3 Emergency............................................................................................................................. 2-4

2.2.4 Mechanical On/Off ................................................................................................................. 2-4

2.2.5 Ignition ................................................................................................................................... 2-4

2.2.6 Microprocessor Clock Synthesizer......................................................................................... 2-5

2.2.7 Serial Peripheral Interface (SPI) ............................................................................................ 2-5

2.2.8 SBEP Serial Interface ............................................................................................................ 2-6

2.2.9 General Purpose Input/Output............................................................................................... 2-6

2.2.10 Normal Microprocessor Operation......................................................................................... 2-7

2.2.11 Static Random Access Memory (SRAM)............................................................................... 2-8

2.3 Controller Board Audio and Signalling Circuits ............................................................................. 2-8

2.3.1 Audio Signalling Filter IC with Compander (ASFIC CMP) ..................................................... 2-8

2.3.2 Transmit Audio Circuits.......................................................................................................... 2-9

2.3.3 Microphone Input Path ........................................................................................................... 2-9

2.3.3.1 PTT Sensing and TX Audio Processing ........................................................................ 2-10

2.3.3.2 TX Secure Audio (optional) ........................................................................................... 2-10

2.3.3.3 Option Board Transmit Audio ........................................................................................ 2-10

2.3.4 Transmit Signalling Circuits ................................................................................................. 2-11

2.3.4.1 Sub-Audible Data (PL/DPL) .......................................................................................... 2-11

2.3.4.2 High Speed Data ........................................................................................................... 2-12

2.3.4.3 Dual Tone Multiple Frequency (DTMF) Data ................................................................ 2-12

2.3.5 Receive Audio Circuits......................................................................................................... 2-13

2.3.5.1 Squelch Detect .............................................................................................................. 2-13

2.3.5.2 Audio Processing and Digital Volume Control ............................................................... 2-14

2.3.5.3 Audio Amplification Speaker (+) Speaker (-) ................................................................. 2-14

2.3.5.4 Handset Audio ............................................................................................................... 2-15

2.3.5.5 Filtered Audio and Flat Audio ........................................................................................ 2-15

2.3.5.6 RX Secure Audio (Optional) .......................................................................................... 2-15

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Motorola pro7100 Manuel de service Page 7

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