2AK9D-L720IoT Module

L720EVBUserManual Version：V1.0 Date：2020-08-03 ShanghaiMobiletekCommunicationLtd L720EVBUserManual Copyright©ShanghaiMobiletekCommunicationLtd1 Notice Somefeaturesoftheproductanditsaccessoriesdescribedhereinrelyonthesoftwareinstalled, capacitiesandsettingsoflocalnetwork,andthereforemaynotbeactivatedormaybelimitedby localnetworkoperatorsornetworkserviceproviders. Thus,thedescriptionshereinmaynotexactlymatchtheproductoritsaccessorieswhichyou purchase.ShanghaiMobiletekCommunicationLtdreservestherighttochangeormodifyany informationorspecificationscontainedinthismanualwithoutpriornoticeandwithoutany liability. Copyright ThisdocumentcontainsproprietarytechnicalinformationwhichisthepropertyofShanghai MobiletekCommunicationLtd.copyingofthisdocumentandgivingittoothersandtheusingor communicationofthecontentsthereof,areforbiddenwithoutexpressauthority.Offendersare liabletothepaymentofdamages.Allrightsreservedintheeventofgrantofpatentorthe registrationofautilitymodelordesign.Allspecificationsuppliedhereinaresubjecttochange withoutnoticeatanytime. DISCLAIMER ALLCONTENTSOFTHISMANUALAREPROVIDED“ASIS”.EXCEPTASREQUIRED BYAPPLICABLELAWS,NOWARRANTIESOFANYKIND,EITHEREXPRESSOR IMPLIED,INCLUDINGBUTNOTLIMITEDTO,THEIMPLIEDWARRANTIESOF MERCHANTABILITYANDFITNESSFORAPARTICULARPURPOSE,AREMADEIN RELATIONTOTHEACCURACY,RELIABILITYORCONTENTSOFTHISMANUAL. TOTHEMAXIMUMEXTENTPERMITTEDBYAPPLICABLELAW,INNOEVENTSHALL SHANGHAIMOBILETEKCOMMUNICATIONLTDBELIABLEFORANYSPECIAL, INCIDENTAL,INDIRECT,ORCONSEQUENTIALDAMAGES,ORLOSSOFPROFITS, BUSINESS,REVENUE,DATA,GOODWILLSAVINGSORANTICIPATEDSAVINGS REGARDLESSOFWHETHERSUCHLOSSESAREFORSEEABLEORNOT. FCC Caution: (1) Exposure to Radio Frequency Radiation. This equipment must be installed and operated in accordance with provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance. (2) Any changes or modifications not expressly approved by the grantee of this device could void the user's authority to operate the equipment. (3) This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. (4) Labelling requirements:This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. (5) if the host is marketed so that end users do not have straight forward commonly used methods for access to remove the module so that the FCC ID of the module is visible; then an additional permanent label referring to the enclosed module: Contains Transmitter Module FCC ID: 2AK9D- L720or Contains FCC ID: 2AK9D-L720 must be used. This Modular Approval is limited to OEM installation for mobile and fixed applications only. The antenna installation and operating configurations of this Modular, including any applicable source-based timeaveraging duty factor, antenna gain and cable loss must satisfy MPE categorical Exclusion Requirements of 2.1091. L720EVBUserManual Copyright©ShanghaiMobiletekCommunicationLtd2 VersionHistory DateVersionDescriptionofchange Author 2020-08-3V1.0Initial Contents 1ABOUTTHISDOCUMENT .................................................................................... 5 L720EVBUserManual Copyright©ShanghaiMobiletekCommunicationLtd3 1.1Scopeofapplications.........................................................................................................................5 1.2Writingpurpose.................................................................................................................................5 1.3Supportandreferencedocumentationlist......................................................................................6 1.4Abbreviations.....................................................................................................................................6 2ABSTRACT ............................................................................................................... 8 3POWERSUPPLY .................................................................................................... 9 4KEYDESCRIPTION ............................................................................................. 10 4.1Poweron/offandRESETkey.........................................................................................................10 4.2FORCEDUSBdownloadkey.........................................................................................................10 4.3WATCHDOGkey.............................................................................................................................10 5APPLICATIONINTERFACE ................................................................................ 12 5.1UARTDB9Interface.......................................................................................................................12 5.2USB（ATUART）Interface..........................................................................................................12 5.3USB（DEBUGUART）Interface.................................................................................................13 5.4USB2.0Interface.............................................................................................................................13 5.5SIMCardInterface...........................................................................................................................14 5.6HeadsetInterface.............................................................................................................................15 5.7Antennainterface.............................…

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THISMUSTBESIGNEDBYTHEAPPLICANT/AGENTANDSHOULDBE PLACEDONAPPROPRIATELETTERHEAD RequestforModular/LimitedModularApproval Date:10.22.2020 Subject:Manufacturer’sDeclarationfor☐ModularApproval☐-SplitModularApproval ■-LimitedModularApproval--LimitedSplitModularApproval ConfidentialityRequestfor:______2AK9D-L720_____ 8BasicRequirements–FCCPart15.212(a)(1) ForItemsMarked“NO(*)”,theLimitedModuleDescriptionMustbeFilledOutontheFollowingPages ModularApprovalRequirementRequirementMet 1.ThemodulartransmittermusthaveitsownRFshielding.Thisisintendedtoensurethatthemodule doesnothavetorelyupontheshieldingprovidedbythedeviceintowhichitisinstalledinorderforall modulartransmitteremissionstocomplywithFCClimits.Itisalsointendedtopreventcoupling betweentheRFcircuitryofthemoduleandanywiresorcircuitsinthedeviceintowhichthemoduleis installed.Suchcouplingmayresultinnon-compliantoperation.Thephysicalcrystalandtuning capacitorsmaybelocatedexternaltotheshieldedradioelements.15.212(a)(1)(i) ■-YES ☐-NO(*) Details:<example–ThemodulecontainsametalshieldwhichcoversallRFcomponentsandcircuitry.Theshieldislocatedon thetopoftheboardnexttoantennaconnector> 2.Themodulartransmittermusthavebufferedmodulation/datainputs(ifsuchinputsareprovided)to ensurethatthemodulewillcomplywithFCCrequirementsunderconditionsofexcessivedataratesor over-modulation.15.212(a)(1)(ii) ■-YES☐-NO(*) Details:<example–Datatothemodulationcircuitisbufferedasdescribedintheoperationaldescriptionprovidedwiththe application> 3.Themodulartransmittermusthaveitsownpowersupplyregulationonthemodule.Thisisintendedto ensurethatthemodulewillcomplywithFCCrequirementsregardlessofthedesignofthepower supplyingcircuitryinthedeviceintowhichthemoduleisinstalled.15.212(a)(1)(iii) ■-YES☐-NO(*) Details:<example–Themodulecontainsitsownpowersupplyregulation.Pleaserefertoschematicfiledwiththisapplication> 4.Themodulartransmittermustcomplywiththeantennaandtransmissionsystemrequirementsof§§ 15.203,15.204(b),15.204(c),15.212(a),and2.929(b).Theantennamusteitherbepermanently attachedoremploya‘‘unique’’antennacoupler(atallconnectionsbetweenthemoduleandthe antenna,includingthecable).The‘‘professionalinstallation’’provisionof§15.203isnotapplicable tomodulesbutcanapplytolimitedmodularapprovalsunderparagraph15.212(b).15.212(a)(1)(iv) ☐-YES■-NO(*) Details:<example–ThemoduleconnectstoitsantennausinganUFLconnectorwhichisconsideredanon-standard connector.Alistofantennastestedandapprovedwiththisdevicemaybefoundinusersmanualprovidedwiththeapplication> 5.Themodulartransmittermustbetestedinastand-aloneconfiguration,i.e.,themodulemustnotbe insideanotherdeviceduringtesting.Thisisintendedtodemonstratethatthemoduleiscapableof complyingwithPart15emissionlimitsregardlessofthedeviceintowhichitiseventuallyinstalled. Unlessthetransmittermodulewillbebatterypowered,itmustcomplywiththeAClineconducted requirementsfoundinSection15.207.ACorDCpowerlinesanddatainput/outputlinesconnectedto themodulemustnotcontainferrites,unlesstheywillbemarketedwiththemodule(seeSection 15.27(a)).Thelengthoftheselinesshallbelengthtypicalofactualuseor,ifthatlengthisunknown,at least10centimeterstoinsurethatthereisnocouplingbetweenthecaseofthemoduleandsupporting equipment.Anyaccessories,peripherals,orsupportequipmentconnectedtothemoduleduringtesting shallbeunmodifiedorcommerciallyavailable(seeSection15.31(i)).15.212(a)(1)(v) ■-YES☐-NO(*) Details:<example–Themodulewastestedstand-aloneasshownintestsetupphotographsfiledwiththisapplication> THISMUSTBESIGNEDBYTHEAPPLICANT/AGENTANDSHOULDBE PLACEDONAPPROPRIATELETTERHEAD ModularApprovalRequirementRequirementMet 6.ThemodulartransmittermustbelabeledwithitsownFCCIDnumber,oruseanelectrondisplay(see KDBPublication784748). IfusingapermanentlyaffixedlabelwithitsownFCCIDnumber,iftheFCCIDisnotvisiblewhen themoduleisinstalledinsideanotherdevice,thentheoutsideofthedeviceintowhichthemoduleis installedmustalsodisplayalabelreferringtotheenclosedmodule.Thisexteriorlabelcanusewording suchasthefollowing:“ContainsTransmitterModuleFCCID:XYZMODEL1”or“ContainsFCCID: XYZMODEL1.”Anysimilarwordingthatexpressesthesamemeaningmaybeused.TheGranteemay eitherprovidesuchalabel,anexampleofwhichmustbeincludedintheapplicationforequipment authorization,or,mustprovideadequateinstructionsalongwiththemodulewhichexplainthis requirement.Inthelattercase,acopyoftheseinstructionsmustbeincludedintheapplicationfor equipmentauthorization. IfthemodulartransmitterusesanelectronicdisplayoftheFCCidentificationnumber,theinformation mustbereadilyaccessibleandvisibleonthemodulartransmitteroronthedeviceinwhichitis installed.Ifthemoduleisinstalledinsideanotherdevice,thentheoutsideofthedeviceintowhichthe moduleisinstalledmustdisplayalabelreferringtotheenclosedmodule.Thisexteriorlabelcanuse wordingsuchasthefollowing:“ContainsFCCcertifiedtransmittermodule(s).”Anysimilarwording thatexpressesthesamemeaningmaybeused.Theusermanualmustincludeinstructionsonhowto accesstheelectronicdisplay.Acopyoftheseinstructionsmustbeincludedintheapplicationfor equipmentauthorization.15.212(a)(1)(vi) ■-YES☐-NO(*) Details:<example–Thereisalabelonthemoduleasshowninthelabelingexhibitfiledwiththisapplication.Hostspecific labelinginstructionsareshownintheinstallationmanual.filedwiththisapplication.> 7.Themodulartransmittermustcomplywithallspecificruleoroperatingrequirementsapplicabletothe transmitter,includingalltheconditionsprovidedintheintegrationinstructionsbythegrantee.Acopy oftheseinstructionsmustbeincludedintheapplicationforequipmentauthorization.Forexample, thereareverystrictoperationalandtimingrequirementsthatmustbemetbeforeatransmitteris authorizedforoperationunderSection15.231.Forinstance,datatransmissionisprohibited,exceptfor operationunderSection15.231(e),inwhichcasethereareseparatefieldstrengthlevelandtiming requirements.Compliancewiththeserequirementsmustbeassured.15.212(a)(1)(vii) ■-YES☐-NO(*) Details:<example–ThemodulecomplieswithFCCPart15Crequirements.InstructionstotheOEMinstallerareprovidedin theinstallationmanualfiledwiththisapplication.> 8.Themodulartransmitter…

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(2020-10-22) METLaboratories,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:CONFIDENTIALITYREQUESTFOR(IoTModule/L720#2AK9D-L720#) ToWhomItMayConcern: -Thisletterservesasanofficialrequestforconfidentialityundersections0.457 and0.459ofCFR47.Wehaverequestedthatthe -BlockDiagram -Schematics -OperationalDescription -TuneupProcedure -PartList requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrompublic review. Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarily releasedtothepublic.Thepublicdisclosureofthesematerialsmaybeharmfultothe applicantandprovideunjustifiedbenefitstoitscompetitors. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely,

ShanghaiMobileTekCommunicationLtd. (10.22.2020) EurofinsMETLabs 914WestPatapscoAvenue Baltimore,MD21230 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorize(ChongqingAcademyofInformationand CommunicationsTechnology)toactonourbehalfinallmattersrelatingtoapplicationfor equipmentauthorization,includingthesigningofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseAct of1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, By:____BinYang__________________ Signed___________________________Printed____________________________ Title:________manager_____________Telephone:________18616835910______ Applicant(CompanyName):ShanghaiMobileTekCommunicationLtd.

I20W00018 _External Photos

I20W00018_Label Photos

I20W00018_Internal Photos

TEST REPORT REPORT NUMBER: I20W00018-EMC ON Type of Equipment: IoT Module Type of Designation: L720 Manufacturer: Shanghai MobileTek Communication Ltd. Brand name -- ACCORDING TO Subpart B, PART 15, RADIO FREQUENCY DEVICES , August 24, 2018 Chongqing Academy of Information and Communication Technology Month date, year Oct, 21, 2020 Signature Zhang Yan Director Note: The test results in this test report relate only to the devices specified in this report. This report shall not be reproduced except in full without the written approval of Chongqing Academy of Information and Communication Technology. Report No.: I20W00018-EMC Chongqing Academy of Information and Communication Technology Address：No. 8,Yuma Road, Chayuan New City, Nan’an District, Chongqing, P. R. China,401336 Tel: 0086-23-88069965 FAX:0086-23-88608777 Page 2 of 14 FCC ID: 2AK9D-L720 Report Date: 2020-10-21 Test Firm Name: Chongqing Academy of Information and Communication Technology FCC Registration Number: CN1239 Statement The measurements shown in this report were made in accordance with the procedures described on test pages. All reported tests were carried out on a sample equipment to demonstrate limited compliance with FCC CFR 47 Part 15B. The sample tested was found to comply with the requirements defined in the applied rules. Report No.: I20W00018-EMC Chongqing Academy of Information and Communication Technology Address：No. 8,Yuma Road, Chayuan New City, Nan’an District, Chongqing, P. R. China,401336 Tel: 0086-23-88069965 FAX:0086-23-88608777 Page 3 of 14 CONTENTS 1 GENERAL INFORMATION ............................................................................................................. 4 1.1 NOTES ............................................................................................................................................................................... 4 1.2 TESTERS ........................................................................................................................................................................... 5 1.3 TESTING LABORATORY INFORMATION ................................................................................................................................... 6 1.4 DETAILS OF APPLICANT OR MANUFACTURER ............................................................................................................. 7 2 TEST ITEM ......................................................................................................................................... 8 2.1 GENERAL INFORMATION ............................................................................................................................................................... 8 2.2 OUTLINE OF EUT ............................................................................................................................ 8 2.3 MODIFICATIONS INCORPORATED IN EUT ......................................................................................... 8 2.4 EQUIPMENT CONFIGURATION ............................................................................................................................................ 8 2.5 OTHER INFORMATION ..................................................................................................................................................................... 8 3 SUMMARY OF TEST RESULTS ........................................................................................................... 9 4.TEST EQUIPMENT AND TEST SOFTWARE .................................................................................... 9 5 TEST RESULTS ....................................................................................................................................... 10 5.1 RADIATED EMISSION ................................................................................................................................................. 10 5.2 Conducted Emission......................................... ...............................................................14 ANNEX A EXTERNAL PHOTOS ...................................................................................................... 17 ANNEX B INTERNAL PHOTOS ....................................................................................................... 17 ANNEX C DEVIATIONS FROM PRESCRIBED TEST METHODS ............................................ 17 Report No.: I20W00018-EMC Chongqing Academy of Information and Communication Technology Address：No. 8,Yuma Road, Chayuan New City, Nan’an District, Chongqing, P. R. China,401336 Tel: 0086-23-88069965 FAX:0086-23-88608777 Page 4 of 14 1 General Information 1.1 Notes All reported tests were carried out on a sample equipment to demonstrate limited compliance with FCC CFR 47 Part15B. The test results of this test report relate exclusively to the item(s) tested as specified in section 2. The following deviation from, additions to, or exclusions from the test specifications have been made. See Annex C. Chongqing Academy of Information and Communications authorizes the applicant or manufacturer (see section 1.4) to reproduce this report provided, and the test report may only be reproduced or published in full. Reproduction or publication of extracts from the report requires the prior written approval of Chongqing Academy of Information and Communication Technology Mr. Zhang Yan. Any use which a third party makes of this report, or any reliance on or decisions to be made based on it, are the responsibility of such third parties. Chongqing Institute of Telecommunications accepts no responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this report. Report No.: I20W00018-EMC Chongqing Academy of Information and Communication Technology Address：No. 8,Yuma Road, Chayuan New City, Nan’an District, Chongqing, P. R. China,401336 Tel: 0086-23-88069965 FAX:0086-23-88608777 Page 5 of 14 1.2 Testers …

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TestSetupPhotoforRFtest RSE（30MHz-3GHz） RSE（3-12.75GHz） RFtestseiupphotos

EUTTestSetupPhotos Pic1.Radiatedemissions(30MHz-1GHz) Pic2.Radiatedemissions(1GHz-18GHz) Pic3.Conductedemissions