HUAWEI MG323 GSM M2M Module
Hardware Guide
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
5.1 About This Chapter ......................................................................................................................... 33
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
Issue 04 (2011-08-22)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Contents
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