Table Of Contents - Motorola i425e Detailed Service Manual

Table of Contents

CONTENTS

SAFETY AND GENERAL INFORMATION ............................................v

MODEL INFORMATION ...............................................................................ix

MODEL SPECIFICATIONS ......................................................................x

PREFACE ...................................................................................................xi

CONTENTS ................................................................................................xiii

Chapter 1

.................................................................................................17

1.1

iDEN Digital Modulation Technology......................................................................................... 17

1.2

iDEN Voice Compression Technology ........................................................................................ 19

1.3

iDEN Power Management............................................................................................................ 20

1.4

Digital Section ............................................................................................................................... 21

1.4.1

Patriot Processor .................................................................................................................................... 22

1.4.2

MCU Digital Phase Locked Loop (DPLL) ............................................................................................ 23

1.4.3

Host System Clock Synthesizer ............................................................................................................. 23

1.4.4

PATRIOT Digital Signal Processor ....................................................................................................... 24

1.4.5

DSP Phase Locked Loop (PLL)............................................................................................................. 24

1.4.6

Serial Peripheral Interface (SPI) ............................................................................................................ 24

1.4.7

Host Memories....................................................................................................................................... 24

1.5

iDEN Transceiver Architecture.................................................................................................. 25

1.6

iDEN TX Path ............................................................................................................................... 26

1.6.1

ROADRUNNER.................................................................................................................................... 27

1.6.2

SLEDGEHAMMER (TX) ..................................................................................................................... 27

1.6.3

BALUN.................................................................................................................................................. 28

1.6.4

RF Power Amplifier Module ................................................................................................................. 28

1.6.5

Cartesian Feedback ................................................................................................................................ 29

1.6.6

Level Set and Phase Training................................................................................................................. 29

1.7

iDEN Receiver Path ...................................................................................................................... 31

1.7.1

Rx Front End (RX Path) ........................................................................................................................ 31

1.7.2

Sledgehammer IC (RX Path) ................................................................................................................. 31

1.7.3

Roadrunner IC (RX Path) ...................................................................................................................... 32

1.8

Frequency Generator (RF) Section ............................................................................................. 32

1.9

MOTOtalk [Available ONLY on i290] ....................................................................................... 33

Chapter 2

.................................................................................................37

PREPARING FOR FIELD LEVEL TESTING...............................................37

2.1

Preparing Equipment for Testing ............................................................................................... 37

2.1.1

Calibrating Equipment ........................................................................................................................... 37

2.1.2

Checking the RF Cable .......................................................................................................................... 37

2.1.3

Strong-Signal Environments .................................................................................................................. 37

2.1.4

Protecting Static-Sensitive Devices ....................................................................................................... 37

2.1.5

Using RSS.............................................................................................................................................. 38

6880401P26-O

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