Specification Selection for Fasteners | Huawei MG323 manual

HUAWEI MG323 GSM M2M Module
Hardware Guide	Mechanical Specifications

6.5 Specification Selection for Fasteners

To ensure that the MG323 module is firmly fixed on the interface board when using the MG323 module, you are recommended to you use the M1.6 or M1.8 machine screw. You can also customize the screws. The fastener components in the following figures are recommended. The machine screw dimensions are M1.6×7.5×3.0×1.0. It is recommended that you plate gold on the metal fastener. Figure 6-7shows the specific dimensions for the fastener components.

Figure 6-7Machine screw dimensions

Protecting from Screw Loosening

	Issue 06 (2013-06-13)	Huawei Proprietary and Confidential	50
		Copyright © Huawei Technologies Co., Ltd.

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Huawei MG323 manual Specification Selection for Fasteners, 7Machine screw dimensions

Contents

Issue Date Hardware Guide No Warranty Version Date Chapter Descriptions About This DocumentHistory Creation Version Date Chapter Descriptions Specifications of the antenna interface Updated .8 Audio InterfaceUpdated -3 Recommended Contents Electrical and Reliability Features Introduction Overview About This Chapter Feature DescriptionOverall Description Function Overview SMS DRX=2DRX=5 DRX=9 Gprs Gprs Class Application Block Diagram Circuit Block Diagram 2Circuit block diagram of the MG323 module B2B Connector Interface Description of the Application Interfaces Pin Pin Name Description DC Characteristics Normal Min Tpy Max UART1DCD ResetTermon Ledstatus VIO Power InterfaceOverview Vbat GND Vcoin Pin No Signal Name DescriptionVbat Interface DCE VIO Interface Power-On and Power-Off Time SequenceVcoin Interface Pin for resetting the hardware Power-On Time SequencePin for controlling power-on and power-off Reset Signal Control InterfacePower-Off Time Sequence Input Signal Control Pins Pin for network status LED Working or Network Status Output Signal Control PinApplication Device Pin No Signal Name Description Feature Direction Uart Interface DCE data DTE is ready DTE to DCE Terminal ready Circuit Recommended for the Uart InterfaceDCE receive DTE transmits DTE to DCE Data Serial data DCE data set DCE is ready DCE to DTE Ready Data signal of the SIM card Clock signal of the SIM cardPower supply of the SIM card Reset signal of the SIM card Ground signal of the SIM card Circuit Recommended for the SIM Card Interface 12External circuit for 32 Ω handsets/16 Ω headsets Audio Interface 13External circuit for the microphone interface Antenna Installation Antenna Interface Coaxial Cable and RF Connector Environmental Type Material Condition Huawei MG323 GSM M2M Module Hardware Guide Antenna Interface ESD Protection for the Antenna Interface RF Specifications of the Antenna InterfaceSpecification Minimum Typical Maximum Unit Value Uplink frequency range GSM 824 849 MHz Specification Minimum Typical Maximum Unit Value Specifications of the Antenna Interface Polarization Linear polarization Pattern Omnidirectional External power voltage Electrical and Reliability FeaturesSymbol Specification Minimum Value Maximum Value Unit Extreme Working Conditions Pin No Signal Name Operating and Storage Temperatures and HumiditySpecification Minimum Value Maximum Value Unit Electrical Criteria of Application Interfaces Voltage great drop. The Vbat power voltage Function Signal Name Waveform Remarks LevelPower supply Than 3.3 VBAT=0 Pins 41, 43, 45, 47, and 49 are power GND ExternalPower pin Ledstatu UART1DSR UART1RTS UART1DTR UART1CTS UART1DCD UART1 UART1RDUART1RIN Working Current Power Supply FeaturesInput Power Supply Parameter Minimum Value Typical Value Maximum Value Unit Band Typical Unit Working Mode Typical value Unit RemarkConfiguration Up/1 Down 123 Reliability FeaturesConfiguration Value Test Condition Standard Test Condition Standard EN61000-4-2 ±4 kV ±8 kV ESD FeaturesESD Test Standard Contact Discharge Air Discharge Dimensions L x W x H 35 mm x 32.5 mm x 3.05 mm Mechanical SpecificationsDimensions Dimensions of the B2B Connector 1Dimensions of the MG323 module unit mm Model Stacking HRS Number Height mm MG323 Module Installation Description 5Structure fixing hole 6MG323 module installation Specification Selection for Fasteners 7Machine screw dimensions 8Nut dimensions Appendix a Circuits of Typical Interfaces 1Circuits of typical interfaces in the MG323 module Appendix B Acronyms and Abbreviations Acronym or Abbreviation Expansion PDU PbcchPCB RTC