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HUAWEI MG323 GSM M2M Module
Hardware Guide
Contents
Issue 04 (2011-08-22)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5
3.8.1 Overview ................................................................................................................................ 24
3.8.2 Speaker Interface .................................................................................................................. 24
3.8.3 Microphone Interface ............................................................................................................. 25
4 Antenna Interface ........................................................................................................................ 27
4.1 About This Chapter ......................................................................................................................... 27
4.2 Antenna Installation ........................................................................................................................ 27
4.3 Coaxial Cable and RF Connector .................................................................................................. 28
4.4 ESD Protection for the Antenna Interface ...................................................................................... 30
4.5 RF Specifications of the Antenna Interface .................................................................................... 30
4.6 Specifications of the Antenna Interface .......................................................................................... 32
5 Electrical and Reliability Features ........................................................................................... 33
5.1 About This Chapter ......................................................................................................................... 33
5.2 Extreme Working Conditions .......................................................................................................... 33
5.3 Working and Storage Temperatures and Humidity ........................................................................ 34
5.4 Electrical Criteria of Application Interfaces ..................................................................................... 34
5.5 Power Supply Features .................................................................................................................. 38
5.5.1 Input Power Supply ............................................................................................................... 38
5.5.2 Working Current .................................................................................................................... 38
5.6 Reliability Features ......................................................................................................................... 39
5.7 ESD Features ................................................................................................................................. 41
6 Structure ........................................................................................................................................ 42
6.1 Overview ........................................................................................................................................ 42
6.2 Dimensions ..................................................................................................................................... 42
6.3 Dimensions of the B2B Connector ................................................................................................. 44
6.4 MG323 Module Installation Description ......................................................................................... 45
6.5 Specification Selection for Fasteners ............................................................................................. 47
7 Appendix A Circuits of Typical Interfaces ............................................................................ 49
8 Appendix B Acronyms and Abbreviations ............................................................................ 50