Cirronet WIT 2550, Руководство по интеграции

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TABLE OF CONTENTS
1. INTRODUCTION ......................................................................................................................6
1.1. Why Spread Spectrum? .......................................................................................................7
1.2. Frequency Hopping vs. Direct Sequence.............................................................................8
2. RADIO OPERATION ..............................................................................................................10
2.1. Synchronization and Registration ......................................................................................10
2.2. Data Transmission .............................................................................................................11
2.2.1. Point-to-Point ...........................................................................................................11
2.2.2. Point-to-Multipoint ..................................................................................................12
2.2.3. Full Duplex Communication....................................................................................12
2.2.4. Channel Access ........................................................................................................12
2.2.5. Store and Forward Repeater Operation....................................................................18
2.3. Modes of Operation ...........................................................................................................21
2.3.1. Control and Data Modes ..........................................................................................21
2.3.2. Power Down Mode ..................................................................................................22
2.3.3. RF Flow Control Mode ............................................................................................22
2.3.4. Co-Existing with 802.11b Networks........................................................................23
2.3.5. European Union Settings .........................................................................................23
3. PROTOCOL MODES ..............................................................................................................24
3.1.1. Data Packet...............................................................................................................25
4. MODEM INTERFACE ............................................................................................................26
4.1. Interfacing to 5-Volt Systems ............................................................................................27
4.2. Evaluation Unit and OEM Module Differences ................................................................27
4.3. Three Wire Operation ........................................................................................................27
4.4. Power-On Reset Requirements ..........................................................................................28
4.6. Received Signal Strength Indicator ...................................................................................29
5. MODEM COMMANDS...........................................................................................................30
5.1. Serial Commands ...............................................................................................................31
5.2. Network Commands ..........................................................................................................34
5.3. Protocol Commands...........................................................................................................37
5.4. Status Commands ..............................................................................................................40
5.5. Memory Commands ..........................................................................................................41
5.6. Modem Command Summary.............................................................................................42
6. WIT2450 DEVELOPER’S KIT ...............................................................................................43
7.0 WinCOM.................................................................................................................................44
7.1 Starting the program ...........................................................................................................46
7.2 Function Keys .....................................................................................................................49
7.3 WinCom Tools....................................................................................................................50
7.4 Script Commands................................................................................................................53
7.5 Demonstration Procedure ...................................................................................................56