Multi-Tech Systems 92U09D24824 ユーザーズマニュアル

Multi-Tech Systems, Inc. GPRS SocketModem Developer’s Guide (S000521A)

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Contents

Chapter 1 – Universal Socket Connectivity ..........................................................................................5

Universal Socket Connectivity Features ........................................................................................5

Universal Socket Design ...............................................................................................................5

Universal Developer Kit Contents .................................................................................................6

Universal Socket Pin Out ..............................................................................................................7

Universal Pin Descriptions ............................................................................................................... 7

Design Considerations ................................................................................................................ 10

Noise Suppression Design Considerations ..................................................................................... 10

PC Board Layout Guidelines ........................................................................................................... 11

Electromagnetic Interference (EMI) Considerations ..................................................................... 11

Electrostatic Discharge Control ...................................................................................................... 12

SocketModem Developer Board ................................................................................................. 13

Board Components ........................................................................................................................ 14

Jumpers and Corresponding Signals .............................................................................................. 14

SocketModem Developer Board Block Diagram ............................................................................ 15

Developer Board Schematics ......................................................................................................... 16

Developer Board Schematics ......................................................................................................... 17

Developer Board Schematics ......................................................................................................... 18

Developer Board Schematics ......................................................................................................... 19

Developer Board Schematics ......................................................................................................... 20

Cellular Information ................................................................................................................... 21

Antenna System for Cellular Devices ............................................................................................. 21

Antenna Specifications .................................................................................................................. 21

OEM Integration ........................................................................................................................ 23

FCC Grant Notes ............................................................................................................................. 23

Host Labeling .................................................................................................................................. 24

Coax Cables Specifications .......................................................................................................... 24

Antennas Available from Multi-Tech ............................................................................................. 25

Global Positioning System (GPS) ................................................................................................. 26

Technical Specifications ................................................................................................................. 26

Features ......................................................................................................................................... 27