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Chapter 1 - SocketModem GSM................................................................................................................ 4
Introduction........................................................................................................................................... 4
Product Features .................................................................................................................................. 4
Product Ordering Information ............................................................................................................. 4
Technical Specifications...................................................................................................................... 5
Mechanical Dimensions....................................................................................................................... 6
SocketModem Configuration............................................................................................................... 7
Serial Configuration.......................................................................................................................... 7
Electrical Characteristics and Power Consumption ......................................................................... 9
Electrical Characteristics.................................................................................................................. 9
Power Consumption......................................................................................................................... 9
LED Indicators .................................................................................................................................... 10
RF Interface ......................................................................................................................................... 10
Upgrading Firmware........................................................................................................................... 11
Chapter 2 - The Antenna System............................................................................................................ 12
Antenna System for Embedded GSM Modems ............................................................................... 12
RF Specifications................................................................................................................................ 12
Chapter 3 - Design Considerations ........................................................................................................ 14
Noise Suppression Design Considerations..................................................................................... 14
PC Board Layout Guidelines ............................................................................................................. 14
Electromagnetic Interference (EMI) Considerations....................................................................... 15
Electrostatic Discharge Control........................................................................................................ 15
Chapter 4 - Safety and Regulatory Compliance .................................................................................... 16
Safety Notices and Warnings ............................................................................................................ 16
Telecom Safety Warning................................................................................................................ 16
Wireless Safety .............................................................................................................................. 16
Certifications, Approvals, Compliance, and Requirements........................................................... 18
Wireless Approvals ........................................................................................................................ 18
Regulatory Compliance Statements .............................................................................................. 19
Waste Electrical and Electronic Equipment Statement.................................................................. 20
Restriction of the Use of Hazardous Substances (RoHS) ............................................................. 21
Information on HS/TS Substances According to Chinese Standards............................................ 22
Information on HS/TS Substances According to Chinese Standards (in Chinese) ....................... 23
Chapter 5 - The SocketModem Developer Board.................................................................................. 24
SocketModem Developer Board Block Diagram ........................................................................... 24
The Developer Board Components .................................................................................................. 25
Board Components ........................................................................................................................ 26
Pins and Corresponding Signals.................................................................................................... 26
Table of Switch Blocks ................................................................................................................... 27
Developer Board Schematics ........................................................................................................ 28
Chapter 6 - Multi-Tech Warranty Statement .......................................................................................... 32
The Multi-Tech Systems, Inc. Warranty Policy................................................................................ 32
Index ........................................................................................................................................................... 34
Multi-Tech Systems, Inc. SocketModem GSM Hardware Guide for Developers
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