Maxon SD-160 Series - Table of Contents

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TABLE OF CONTENTS
1. INTRODUCTION................................................................... 4
2. TECHNICAL SPECIFICATIONS ....................................... 5
3. FEATURES ............................................................................. 9
4. THEORY OF OPERATION ............................................... 23
4.1. INTRODUCTION ...........................................................................23
4.2. DIGITAL CIRCUITS ......................................................................23
4.3. RF CIRCUITS.................................................................................27
4.3.1. PLL SYNTHESIZER ................................................................................ 27
4.3.2. TRANSMITTER ....................................................................................... 28
4.3.3. RECEIVER .............................................................................................. 29
4.4. ACC-513 (GMSK MODEM CIRCUITS)........................................31
4.5. ACC-514 (FFSK MODEM CIRCUITS) .........................................32
4.6. ACC-515 (GPS INTERFACE CIRCUITS) .....................................33
5. MAINTENANCE AND REPAIR ........................................ 34
6. COMPONENT REPLACEMENT ...................................... 38
7. ALIGNMENT PROCEDURE ............................................. 40
7.1. RECEIVER...................................................................................... 41
7.2. TRANSMITTER .............................................................................. 42
7.3. SQUELCH ADJUSTMENT ............................................................ 43
7.4. TEST EQUIPMENT SETUP ..........................................................45