Pbcch, Pcb, Pdu, Rtc, Sim, Ttl, Tvs, Uart, Vswr | Huawei MG323

HUAWEI MG323 GSM M2M Module
Hardware Guide		Appendix B Acronyms and Abbreviations

	Acronym or Abbreviation	Expansion

	PBCCH	Packet Broadcast Control Channel

	PCB	Printed Circuit Board

	PDU	Protocol Data Unit

	RF	Radio Frequency

	RoHS	Restriction of the Use of Certain Hazardous
		Substances

	RTC	Real-time Clock

	SIM	Subscriber Identity Module

	TTL	Transistor-transistor Logic

	TVS	Transient Voltage Suppressor

	UART	Universal Asynchronous Receiver-transmitter

	VSWR	Voltage Standing Wave Ratio

	Issue 06 (2013-06-13)	Huawei Proprietary and Confidential	54
		Copyright © Huawei Technologies Co., Ltd.

Image 54

Huawei MG323 manual Pbcch, Pcb, Pdu, Rtc, Sim, Ttl, Tvs, Uart, Vswr

Contents

Issue Date Hardware Guide No Warranty Version Date Chapter Descriptions About This DocumentHistory Creation Version Date Chapter Descriptions Updated .8 Audio Interface Updated -3 RecommendedSpecifications of the antenna interface 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 Power-On and Power-Off Time Sequence Vcoin InterfaceVIO Interface Power-On Time Sequence Pin for controlling power-on and power-offPin for resetting the hardware Signal Control Interface Power-Off Time SequenceReset Input Signal Control Pins Pin for network status LED Output Signal Control Pin Application DeviceWorking or Network Status 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 UART1 UART1RD UART1RINUART1DSR UART1RTS UART1DTR UART1CTS UART1DCD Working Current Power Supply FeaturesInput Power Supply Parameter Minimum Value Typical Value Maximum Value Unit Working Mode Typical value Unit Remark ConfigurationBand Typical Unit Up/1 Down 123 Reliability FeaturesConfiguration Value Test Condition Standard Test Condition Standard ESD Features ESD Test Standard Contact Discharge Air DischargeEN61000-4-2 ±4 kV ±8 kV Mechanical Specifications DimensionsDimensions L x W x H 35 mm x 32.5 mm x 3.05 mm 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