FCC ID: N7NEM8781 850/900/1800/1900/2100 MHz Multi-band Module

GSM Embedded Modules Hardware Integration Guide Proprietary and Confidential EM8780/

EM8781 2130851 Rev 1.0 Limitation of Liability Patents Preface Theinformationinthismanualissubjecttochangewithout noticeanddoesnotrepresentacommitmentonthepartof SierraWireless.SIERRAWIRELESSANDITSAFFILIATES SPECIFICALLYDISCLAIMLIABILITYFORANYANDALL DIRECT,INDIRECT,SPECIAL,GENERAL,INCIDENTAL, CONSEQUENTIAL,PUNITIVEOREXEMPLARYDAMAGES INCLUDING,BUTNOTLIMITEDTO,LOSSOFPROFITSOR REVENUEORANTICIPATEDPROFITSORREVENUE ARISINGOUTOFTHEUSEORINABILITYTOUSEANY SIERRAWIRELESSPRODUCT,EVENIFSIERRAWIRELESS AND/ORITSAFFILIATESHASBEENADVISEDOFTHE POSSIBILITYOFSUCHDAMAGESORTHEYARE FORESEEABLEORFORCLAIMSBYANYTHIRDPARTY. Notwithstandingtheforegoing,innoeventshallSierra Wirelessand/oritsaffiliatesaggregateliabilityarisingunderor inconnectionwiththeSierraWirelessproduct,regardlessof thenumberofevents,occurrences,orclaimsgivingriseto liability,beinexcessofthepricepaidbythepurchaserforthe SierraWirelessproduct. Portionsofthisproductmaybecoveredbysomeorallofthe followingUSpatents:

5,629,960 5,515,013 5,890,057 5,929,815 6,359,591 6,339,405 6,653,979 6,643,501 6,876,697 6,847,830 6,985,757 7,023,878 D459,303 andotherpatentspending. 5,878,234 6,199,168 6,561,851 6,845,249 6,968,171 D442,170 5,845,216 6,169,884 6,400,336 6,697,030 6,879,585 7,053,843 5,847,553 6,191,741 6,516,204 6,785,830 6,886,049 7,106,569 Thisproductincludes technologylicensedfrom:

LicensedbyQUALCOMMIncorporatedunderoneormoreof thefollowingUnitedStatespatentsand/ortheircounterparts inothernations:

4,901,307 5,267,261 5,490,165 5,544,196 5,710,784 ManufacturedorsoldbySierraWirelessoritslicenseesunder oneormorepatentslicensedfromInterDigitalGroup. 5,056,109 5,267,262 5,504,773 5,568,483 5,778,338 5,101,501 5,337,338 5,506,865 5,600,754 5,109,390 5,414,796 5,511,073 5,657,420 5,228,054 5,416,797 5,535,239 5,659,569 Copyright 2007SierraWireless.Allrightsreserved. Rev 1.0 Apr.07 3 GSM Embedded Modems Hardware Integration Guide Trademarks Contact Information AirCardandHeartoftheWirelessMachineareregistered trademarksofSierraWireless. SierraWireless,theSierraWirelesslogo,theredwavedesign, andWatcheraretrademarksofSierraWireless. WindowsisaregisteredtrademarkofMicrosoftCorporation. QUALCOMMisaregisteredtrademarkofQUALCOMM Incorporated.Usedunderlicense. Othertrademarksarethepropertyoftherespectiveowners. Sales Desk:

Phone: 1-604-232-1488 Hours: 8:00 AM to 5:00 PM Pacific Time E-mail: sales@sierrawireless.com Post: Sierra Wireless 13811 Wireless Way Richmond, BC Canada V6V 3A4 Fax: 1-604-231-1109 Web: www.sierrawireless.com Consultourwebsiteforuptodateproductdescriptions, documentation,applicationnotes,firmwareupgrades,trouble shootingtips,andpressreleases:

www.sierrawireless.com 4 2130851 Table of Contents Introduction . 7 The Lab Adapter Board . 7 Required connectors . 7 Guide organization . 8 Related documents. 9 Power Interface . 11 Overview of operation. 11 Power signals . 11 Electrostatic discharge (ESD) . 11 Module power states . 12 Off state . 12 Normal state . 12 Low power mode . 12 Usage models . 13 RF Integration . 15 RF connection . 15 Ground connection . 16 Shielding . 16 Antenna and cabling . 17 Interference and sensitivity . 18 Power supply noise . 18 Interference from other wireless devices . 18 Device-generated RF . 19 Regulatory Information . 21 Important notice . 21 Rev 1.0 Apr.07 5 GSM Embedded Modems Hardware Integration Guide Safety and hazards . 21 Important compliance information for North American users . 22 Acronyms and Definitions . 23 Index . 25 6 2130851 1: Introduction 1 Note: Throughout this document, EM878x refer to the entire suite of GSM embedded modules. Note: Contact the vendors before you choose your connectors the numbers included here are for reference only. Choose connectors that are appropriate to your design. SierraWirelessembeddedmodulesformtheradiocomponent fortheproductsinwhichtheyareembedded.Theembedded modulesareavailableforuseonGSMnetworks,andinclude theseproducts:

EM8780andEM8781operate onGSMnetworksusingthe GSM/GPRS/EDGE/UMTS/HSDPAnetworkstandards Purpose of this guide ThisguideaddressesissuesthataffecttheintegrationofSierra Wirelessmodulesintohostproducts,andincludesdesign recommendationsforthehostproducts. Note: An understanding of network technology and experience in integrating hardware components into electronic equipment is assumed. The Lab Adapter Board SierraWirelessmanufacturesaLabAdapterBoardthatfacili tatesallphasesoftheintegrationprocess. TheLabAdapterBoardisahardwaredevelopmentplatform thatisdesignedtosupportmultiplemembersoftheWireless EmbeddedModuleproductfamily.Itcontainsthehardware componentsthataretypicallynecessaryforevaluatingand developingwiththemodule,including:

LabAdapterBoard

Cables

Antennas

Otheraccessories Required connectors Whenintegratingthesemodulesintoyourhostdevice,you needthefollowingconnectortypes:

RFcablethatmateswithIPEXMHFA13connector(model 20428001R)

IPEX15pinCABLINEcableconnector(partnumber 20347015E01).

IndustrystandardUSIM/RUIMconnectortheactual connectoryouusedependsonhowyourdeviceexposesthe Rev 1.0 Apr.07 7 GSM Embedded Modems Hardware Integration Guide USIM/RUIMsocket.Forexample,theUSIM/RUIM connectorusedontheLabAdapterBoardisanITT CCM033518. Guide organization Thisguideincludesthefollowingsections:

Introduction(thissection) 1. 2. Power Interface(page11) Describespowercontrolsignalsusedbythemoduleand discussesdesignissuesrelatedtopowersupply integration. 3. RF Integration(page15) Describesantennaconnectionmethodsandgroundingissues, RFinterferenceanddesenseissues. 4. Regulatory Information(page21) Describesregulatoryapprovalsandregulatoryinformation requirements. 5. Acronyms and Definitions(page23) Listsacronymsanddefinitionsusedthroughoutthisguide. Index(page101) 6. Note: The term "host" always refers to the host device. 8 2130851 Introduction Related documents Thisguidedealsspecificallywithhardwareintegrationissues thatareuniquetotheEM878xmodules. Table11listsotherdocumentsreferencedinthisguide. Table 1-1: Related documentation Document title AT Command Set for User Equipment (UE) (Release 6) FCC Regulations - Part 15 -

Radio Frequency Devices IEC-61000-4-2 level 3 EM8780/EM8781 Product Specification (Document 2130TBD) Description This 3GPP technical specification describes standard AT commands for GSM / UMTS devices. Download this document (3GPP TS 27.007) from www.3gpp.org. This section of the FCC Code of Federal Regulations, Title 47 deals with radio frequency devices, including shielding requirements for embedded modules. Download this regulation from http://wireless.fcc.gov. Techniques for testing and measuring electrostatic discharge (ESD) immunity. Order this document from www.iec.ch. Features, mechanical and electrical specifications, and standards compliance of the EM8780 / EM8781. MC87xx Modem CnS Reference

(Document 2130602) This document describes the CnS (Control and Status) messages supported by the EM8780/EM8781. MC87xx Modem Extended AT Command Reference

(Document 2130616) Mobile Station (MS) Conformance Specification;

Part 4: Subscriber Interface Module UMTS Modems Supported AT Command Reference

(Document 2130617) Universal Serial Bus Specification, Rev 2.0 Proprietary AT commands for the EM878x. This 3GPP technical specification describes SIM testing methods. Download this document (3GPP TS 11.10-4) from www.3gpp.org. This document describes proprietary, basic AT commands for the EM878x. Download this specification from www.usb.org. Rev 1.0 Apr.07 9 GSM Embedded Modems Hardware Integration Guide 10 2130851 2: Power Interface 2 Overview of operation Themoduleisdesignedtousea5.0V(nominal)powersupply, providedbythehost.Itisthehostsresponsibilitytoprovide safeandcontinuouspowertothemoduleatalltimes;the moduledoesNOThaveanindependentpowersupply,or protectioncircuitstoguardagainstelectricalissues. Themodulespowerstateiscontrolledbythehostssupplyof the5.0Vpowerrail.Whenthisrailispoweredup,themodem isintheONstate.Whenthisrailispowereddown,the modemisintheOFFstate. Power signals Themodulemustbeconnectedtoa5.0Vpowersupply. Fordetailedpinoutandvoltage/currentrequirementsofthese modules,seetheProductSpecificationDocumentforyour embeddedmodule. Electrostatic discharge (ESD) Youareresponsibleforensuringthatthehosthasadequate ESDprotectionondigitalcircuitsandantennaports:

(Operational)RFport(antennalaunchandRFconnector):

IEC6100042Level(ElectrostaticDischargeImmunityTest)

(Nonoperational)Hostconnectorinterface:

JESD22A114B+/1kVHumanBodyModeland JESD22C101+/125VChargedDeviceModel Specificrecommendationsareprovidedwhereneededinthis guide;however,thelevelofprotectionrequireddependson yourapplication. Note: ESD protection is highly recommended for the USIM / RUIM connector at the point where the contacts are exposed, and for any other signals from the host interface that would be subjected to ESD by the user of the product. Rev 1.0 Apr.07 Values in this guide are summarized from the product specification documents (PSDs) - the PSD takes precedence. 11 GSM Embedded Modems Hardware Integration Guide Module power states Note: The module unit defaults to the Normal state when 5.0V is first applied. Themodulehasthreepowerstates:

Off Nopowertothemodule.

Normal Powerissuppliedtothemodule.Themoduleisactive. Severalmodesarepossible(Receive,Transmit,Sleep, Shutdown).

Low power (airplane mode) Powerissuppliedtothemodule.Themoduleisactive,but RFisdisabled. Astatemachineisimplementedinthemoduletomonitorthe operatingtemperature. Off state Thisstateoccurswhenthereisnopowertothemodulethe hostpowersourceisdisconnectedfromthemodule,andall voltagesassociatedwiththemoduleareat0V. Whetherthehostdeviceisalsopoweredoffdependsonthe powerraildesign.Iftheconnectionbetweenthepowerrail andthemoduleiscontrolledbythehost,thehostcanstay poweredonandcutthepowertoputthemodemintothe disconnectedstate.Ifthepowerrailissharedbetweenthehost deviceandthemodule,thehostispoweredoffwhenthe moduleispoweredoff. Normal state Thisistheactivestateofthemodule.Inthisstate:

Themoduleisfullypowered.

Themoduleiscapableofplacing/receivingcallsorestab lishingdataconnectionsonthewirelessnetwork.

TheUSBinterfaceisfullyactive. Low power mode Inthisstate,RF(bothRxandTx)isdisabledinthemodule,but theUSBinterfaceisstillactive.Thislowpowermode

(airplanemode)iscontrolledbysoftwarecommands throughthehostinterface. Forinstructionsonusingthecommands,referto:

ATCommandSetforUserEquipment(UE)(Release6)

(+CFUN=0command), Note: This is the default state when 5.0V is first applied. 12 Values in this guide are summarized from the product specification documents (PSDs) - the PSD takes precedence. 2130851 Power Interface

MC87xxModemCnSReference(Document2130602)(Disable Modemcommand). Usage models Usagemodelscanbeusedtocalculateexpectedcurrent consumption.AsampleusagemodelisprovidedinTable21. Table 2-1: Power consumption of a sample application Used by a field worker

(data only) 1000 kB/day 500 kB/day Upload

(module Tx) Download

(module Rx) Coverage / data rate 1X / 80 kbps Used for remote data logging 40 kB/h 100 kB/day IS-95 / 14.4 kbps Hours of operation 8 / day (off 16 hrs / day) 24 / day Total power consumed over 24 hours 66 mAh 220 mAh Thisexamplemodelappliestoabatteryoperateddevice.In practice,becausethemoduleisisolatedfromthebattery(the hostdevicemanagesthepowersource),themAhratings dependonthedevicessupplyefficiency. Themoduleautomaticallyentersslottedsleepmodewhen thereisnotransmissionorreceptionoccurring(SCI=2). Transmitpowerisassumedtobe+3dBm. Rev 1.0 Apr.07 Values in this guide are summarized from the product specification documents (PSDs) - the PSD takes precedence. 13 GSM Embedded Modems Hardware Integration Guide 14 Values in this guide are summarized from the product specification documents (PSDs) - the PSD takes precedence. 2130851 3: RF Integration 3 TheEM878xoperatesonthefrequenciesdetailedinTable31. Table 3-1: EM878x Supported frequencies Band GSM 850 EGSM 900 DCS 1800 PCS 1900 Band I UMTS 2100 Band II UMTS 1900 Band V UMTS 850 Frequencies

(MHz) Tx: 824849 Rx: 869-894 Tx: 880-915 Rx: 925-960 Tx: 1710-1785 Rx: 1805-1880 Tx: 1850-1910 Rx: 1930-1990 Tx: 19201980 Rx: 21102170 Tx: 18501910 Rx: 19301990 Tx: 824849 Rx: 869894 RF connection Whenattachinganantennatothemodule:

Note: To disconnect the antenna, make sure you use the IPEX MHF connector removal tool (P/N TBD) to prevent damage to the module or coaxial cable assembly.

UseanIPEXMHFconnector(modelMHFA137G11360 SW)toattachanantennatoaconnectionpointonthe module,asshowninFigure31below.

Matchcoaxialconnectionsbetweenthemoduleandthe antennato50.

MinimizeRFcablelossestotheantenna;therecommended maximumcablelossforantennacablingis0.5dB. Rev 1.0 Apr.07 Values in this guide are summarized from the product specification documents (PSDs) - the PSD takes precedence. 15 GSM Embedded Modems Hardware Integration Guide Figure 3-1: Antenna connection points and mounting tabs/clip EM8780/8781:

GPS connector Diversity RF connector Main RF connector Mounting tabs/clip Ground connection Whenconnectingthemoduletosystemground:

Preventnoiseleakagebyestablishingaverygoodground connectiontothemodulethroughthehostconnector.

Connecttosystemgroundusingthemountingtabsatthe topandbottomofthemodule(asshowninFigure31on page16).

MinimizegroundnoiseleakageintotheRF. Dependingonthehostboarddesign,noisecouldpotentially becoupledtothemodulefromthehostboard.Thisis mainlyanissueforhostdesignsthathavesignalstraveling alongthelengthofthemodule,orcircuitryoperatingat bothendsofthemoduleinterconnects. Shielding ThemoduleisfullyshieldedtoprotectagainstEMIandto ensurecompliancewithFCCPart15RadioFrequency Devices(orequivalentregulationsinotherjurisdictions). Note: The module shields must NOT be removed. 2130851 16 In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence. Note: Values in this guide are taken from the appropriate product specification documents

(PSDs) (listed in Related documents, page 9). In the case of a discrepancy between this document and the relevant PSD, use the value listed in the PSD. RF Integration Antenna and cabling Whenselectingtheantennaandcable,itiscriticaltoRFperfor mancetomatchantennagainandcableloss. Choosing the correct antenna and cabling Considerthefollowingpointsforpropermatchingofantennas andcabling:

Theantenna(andassociatedcircuitry)shouldhavea nominalimpedanceof50withareturnloss 10dB acrosseachfrequencybandofoperation.

Thesystemgainvalueaffectsbothradiatedpowerand regulatory(FCC,IC,CE,etc.)testresults. Developing custom antennas Considerthefollowingpointswhendevelopingcustom designedantennas:

AskilledRFengineershoulddothedevelopmenttoensure thattheRFperformanceismaintained.

Identifythebandsthatneedtobesupported. Determining the antennas location Considerthefollowingpointswhendecidingwheretoputthe antenna:

AntennalocationmayaffectRFperformance.Althoughthe moduleisshieldedtopreventinterferenceinmostapplica tions,theplacementoftheantennaisstillveryimportant ifthehostdeviceisinsufficientlyshielded,highlevelsof broadbandorspuriousnoisecandegradethemodules performance.

Connectingcablesbetweenthemoduleandtheantenna musthave50impedance.Iftheimpedanceofthemodule ismismatched,RFperformanceisreducedsignificantly.

Antennacablesshouldberouted,ifpossible,awayfrom noisesources(switchingpowersupplies,LCDassemblies, etc.).Ifthecablesarenearthenoisesources,thenoisemay becoupledintotheRFcableandintotheantenna. Disabling the diversity antenna Ifyourhostdeviceisnotdesignedtousethemodules diversityantenna,terminatetheinterfacewitha50 ohm load. Rev 1.0 Apr.07 Values in this guide are summarized from the product specification documents (PSDs) - the PSD takes precedence. 17 GSM Embedded Modems Hardware Integration Guide Note: These modules are based on ZIF (Zero Intermediate Frequency) technologies; when performing EMC

(Electromagnetic Compatibility) tests, there are no IF

(Intermediate Frequency) components from the module to consider. Note: Values in this guide are taken from the appropriate product specification documents

(PSDs) (listed in Related documents, page 9). In the case of a discrepancy between this document and the relevant PSD, use the value listed in the PSD. Interference and sensitivity SeveralsourcesofinterferencecanaffecttheRFperformance ofthemodule(RFdesense).Commonsourcesincludepower supplynoiseanddevicegeneratedRF. RFdesensecanbeaddressedthroughacombinationof mitigationtechniquesandradiatedsensitivitymeasurement. Power supply noise NoiseinthepowersupplycanleadtonoiseintheRFsignal. Thepowersupplyripplelimitforthemoduleisnomorethan 200mVpp1Hzto100kHz.Thislimitincludesvoltageripple duetotransmitterburstactivity. Interference from other wireless devices Wirelessdevicesoperatinginsidethehostdevicecancause interferencethataffectsthemodule. Todeterminethemostsuitablelocationsforantennasonyour hostdevice,evaluateeachwirelessdevicesradiosystem, consideringthefollowing:

Anyharmonics,subharmonics,orcrossproductsofsignals generatedbywirelessdevicesthatfallinthemodulesRx rangemaycausespuriousresponse,resultingindecreased Rxperformance.

TheTxpowerandcorrespondingbroadbandnoiseofother wirelessdevicesmayoverloadorincreasethenoisefloorof themodulesreceiver,resultinginRxdesense. Theseverityofthisinterferencedependsontheclosenessof theotherantennastothemodulesantenna.Todetermine suitablelocationsforeachwirelessdevicesantenna, thoroughlyevaluateyourhostdevicesdesign. 2130851 18 In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence. Note: The module can cause interference with other devices such as hearing aids and on-

board speakers. Wireless devices such as the embedded module transmit in bursts (pulse transients) for set durations (RF burst frequencies). Hearing aids and speakers convert these burst frequencies into audible frequencies, resulting in audible noise. RF Integration Device-generated RF AllelectroniccomputingdevicesgenerateRFinterferencethat cannegativelyaffectthereceivesensitivityofthemodule

(RFdesense). Theproximityofhostelectronicstotheantennainwireless devicescancontributetoRFdesense.Componentsthatare mostlikelytocauseRFdesenseinclude:

Microprocessorandmemory

Displaypanelanddisplaydrivers

Switchingmodepowersupplies Theseandotherhighspeeddevices(inparticular,the processor)cancauseRFdesensebecausetheyrunat frequenciesoftensofMHz.Therapidriseandfallofthese clocksignalsgenerateshigherorderharmonicsthatoftenfall withintheoperatingfrequencybandofthemodule,causing RFdesense. Example Onasubsystemrunningat40MHz,the22ndharmonicfalls at880MHz,whichiswithinthecellularreceivefrequency band. Note: In practice, there are usually numerous interfering frequencies and harmonics. The net effect can be a series of desensitized receive channels. Rev 1.0 Apr.07 Values in this guide are summarized from the product specification documents (PSDs) - the PSD takes precedence. 19 GSM Embedded Modems Hardware Integration Guide 2130851 20 In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence. 4: Regulatory Information 4 Important notice Becauseofthenatureofwirelesscommunications,trans missionandreceptionofdatacanneverbeguaranteed.Data maybedelayed,corrupted(i.e.,haveerrors)orbetotallylost. Althoughsignificantdelaysorlossesofdataarerarewhen wirelessdevicessuchastheSierraWirelessmodemareusedin anormalmannerwithawellconstructednetwork,theSierra Wirelessmodemshouldnotbeusedinsituationswherefailure totransmitorreceivedatacouldresultindamageofanykind totheuseroranyotherparty,includingbutnotlimitedto personalinjury,death,orlossofproperty.SierraWirelessand itsaffiliatesacceptnoresponsibilityfordamagesofanykind resultingfromdelaysorerrorsindatatransmittedorreceived usingtheSierraWirelessmodem,orforfailureoftheSierra Wirelessmodemtotransmitorreceivesuchdata. Safety and hazards DonotoperateyourEM8780/EM8781modem:

Inareaswhereblastingisinprogress

Whereexplosiveatmospheresmaybepresentincluding refuellingpoints,fueldepots,andchemicalplants

Nearmedicalequipment,lifesupportequipment,orany equipmentwhichmaybesusceptibletoanyformofradio interference.Insuchareas,theEM8780/EM8781modem MUSTBEPOWEREDOFF.Otherwise,theEM878x modemcantransmitsignalsthatcouldinterferewiththis equipment. Inanaircraft,theEM8780/EM8781modemMUSTBE POWEREDOFF.Otherwise,theEM8780/EM8781modemcan transmitsignalsthatcouldinterferewithvariousonboard systemsandmaybedangeroustotheoperationoftheaircraft ordisruptthecellularnetwork.Useofacellularphoneinan aircraftisillegalinsomejurisdictions.Failuretoobservethis instructionmayleadtosuspensionordenialofcellular telephoneservicestotheoffender,orlegalactionorboth. Someairlinesmaypermittheuseofcellularphoneswhilethe aircraftisonthegroundandthedoorisopen.TheEM8780/

EM8781modemmaybeusednormallyatthistime. Rev 1.0 Apr.07 21 GSM Embedded Modems Hardware Integration Guide Important compliance information for North American users TheEM8780/EM8781modemhasbeengrantedmodular approvalformobileapplications.Integratorsmayusethe EM8780/EM8781modemintheirfinalproductswithout additionalFCC/IC(IndustryCanada)certificationifthey meetthefollowingconditions.Otherwise,additionalFCC/IC approvalsmustbeobtained. 1. Atleast20cmseparationdistancebetweentheantennaand theusersbodymustbemaintainedatalltimes. 2. TocomplywithFCC/ICregulationslimitingbothmaximum RFoutputpowerandhumanexposuretoRFradiation,the maximumantennagainincludingcablelossinamobileonly exposureconditionmustnotexceed:

5dBiintheCellularbandand4dBiinthePCSbandforthe EM8780/EM8781modem 3. TheEM8780/EM8781modemanditsantennamustnotbe colocatedoroperatinginconjunctionwithanyother transmitterorantennawithinahostdevice. 4. Alabelmustbeaffixedtotheoutsideoftheendproductinto whichtheEM8780/EM8781modemisincorporated,witha statementsimilartothefollowing:

ForEM8780:

ThisdevicecontainsFCCID:N7NEM8780 ForEM8781:

ThisdevicecontainsFCCID:N7NEM8781 Thisequipmentcontainsequipmentcertifiedunder IC:2417CEM8781 5. Ausermanualwiththeendproductmustclearlyindicatethe operatingrequirementsandconditionsthatmustbeobserved toensurecompliancewithcurrentFCC/ICRFexposure guidelines. TheendproductwithanembeddedEM8780/EM8781modem mayalsoneedtopasstheFCCPart15unintentionalemission testingrequirementsandbeproperlyauthorizedperFCCPart 15whereapplicable. Note:Ifthismoduleisintendedforuseinaportabledevice, youareresponsibleforseparateapprovaltosatisfytheSAR requirementsofFCCPart2.1093andICRSS102. 22 2130851 A A: Acronyms and Definitions Table A-1: Acronyms and definitions

. Acronym or term BER Definition Bit Error Rate a measure of receive sensitivity BLER dB dBm EDGE EM Block Error Rate Decibel = 10 x log10 (P1/P2) P1 is calculated power; P2 is reference power Decibel = 20 x log10 (V1/V2) V1 is calculated voltage, V2 is reference voltage Decibels, relative to 1 mW - Decibel(mW) = 10 x log10 (Pwr (mW)/

1mW) Enhanced Data rates for GSM Evolution Embedded Module EM8780/EM8781 Sierra Wireless embedded modules used on GSM networks ESD GPRS GPS GSM HSDPA Hz IS-95 MHz PCS RF RUIM SCI ElectroStatic Discharge General Packet Radio Services Global Positioning System a system that uses a series of 24 geosynchronous satellites to provide navigational data. Global System for Mobile communications High Speed Download Packet Access. An add-on data service to GSM mobile phone networks. Hertz = 1 cycle/second 2G radio standards targeted for voice (cdmaONE) MegaHertz = 10E6 Hertz (Hertz = 1 cycle/second) Personal Communication System PCS spans the 1.9 GHz radio spectrum Radio Frequency Removable User Identity Module Slot Cycle Index Sensitivity (RF) Measure of lowest power signal at the receiver input that can provide a prescribed BER/BLER/SNR value at the receiver output. Rev 1.0 Apr.07 23 GSM Embedded Modems Hardware Integration Guide Table A-1: Acronyms and definitions Acronym or term SIM Definition Subscriber Identity Module SNR UMTS USB USIM WCDMA Signal to Noise Ratio Universal Mobile Telecommunications System. See also WCDMA. Universal Serial Bus Universal Subscriber Identity Module Wideband Code Division Multiple Access. In this document, the term UMTS is used instead of WCDMA. 24 2130851 Index A acronymsanddefinitions 2324 airplanemode 12 antenna connectionandmountingpoints 16 connectionconsiderations 15 custom,considerations 17 diversityantenna,disabling 17 limit,matchingcoaxialconnections 15 location,considerations 17 matching,considerations 17 maximumcableloss 15 3GPPspecification,details 9 lowpowermode,setting 12 ATcommands,extended EM878x,reference 9 ATcommands,standard EM878x,reference 9 ATcommands C cableloss CnS connection antenna,maximum 15 EM878xreference 9 grounding 16 connectors,required hostmodule 78 RF,IPEX 7 USIM/RUIM 7 consumption 13 current usagemodels 13 D DCS1800 RFparameters,EM878x 15 desense.SeeRF diversityantenna disabling 17 E EGSM900 RFparameters,EM878x 15 electrostaticdischarge.SeeESD EM878x ATreference(extended) 9 ATreference(standard) 9 CnSreference, 9 productspecification 9 RFparameters 15 protectionrequirements 11 testingtechniquesdocument(IEC6100042) 9 regulations,relevantsection 9 ESD F FCC G grounding GSM850 connectionconsiderations 16 RFparameters,EM878x 15 I impedance interference moduleantenna 17 devicegenerated 19 powersupplynoise 18 wirelessdevices 18 L LabAdapterBoard 7 lowpowermode lowpower,modulepowerstate 12 setting,ATcommands 12 M module powerstates 12 N noise leakage,minimizing 16 RFinterference,powersupply 18 normal,modulepowerstate 12 O off,modulepowerstate 12 Rev 1.0 Apr.07 25 GSM Embedded Modems Hardware Integration Guide P PCS1900 power RFparameters,EM878x 15 defaultstate 12 disconnected,characteristics 12 normal,characteristics 12 signals,overview 11 state,lowpower 12 state,normal 12 state,off 12 supply,RFinterference 18 supply,ripplelimit 18 powerinterface 1113 PSD EM878x 9 RF R regulatoryinformation 2122 FCC 22 limitationofliability 21 safetyandhazards 21 antennacableloss,maximum 15 antennaconnection,considerations 15 cabletype,required 7 desense integration 1519 interference devicegenerated 19 parameters otherdevices 19 powersupply 18 wirelessdevices 18 DCS1800 15 EGSM900 15 EM878x 15 GSM850 15 PCS1900 15 UMTS1900 15 UMTS2100 15 UMTS850 15 S shielding SIM module,compliance 16 testingmethods,MSconformancespecification 9 SIM.SeeUSIM/RUIM T testing ESDimmunity, techniques document(IEC61000 42) 9 U UMTS1900 UMTS2100 RFparameters,EM878x 15 RFparameters,EM878x 15 RFparameters,EM878x 15 UMTS850 USB UniversalSerialBus.SeeUSB usagemodels currentconsumption 13 specification 9 connectortype,required 7 USIM/RUIM Z ZIF(ZeroIntermediateFrequency) 18 26 2130851