2BCMH-HJ-09OPEN EAR WIRELESS HEADPHONES

HJ-09 Method 1: Open the cover of the charging box, take the headset out and turn it on automatically. (Poweron prompt tone :"Pairing") Method 2: With a single earphone outside the charging box, long press the "control button" for 3 seconds to turn it on. (Poweron prompt tone :"du") Packing Including Product Specification Product Wear Power onFirst Pairing Method 1: Put the headset into the charging box, automatically shutdown and charge. Method 2: if there is no connection with the device, it will automatically shutdown after 3 minutes. (Shutdown tone : power off") Method 3: When the earphone is not connected, long press the touch button of either earphone for 5 seconds, and the left and right earphones will be turned off at the same time. (Shutdown tone : power off") Power off User Manual Please review this manual thoroughly before operating your device. In order to avoid unnecessary injuries, please do not Disassemble this product by yourself, and please use a standard charger. Driver : 16.2mm Bluetooth Version : V5.3 Headphones Charging Time ＜2 H Charging Case Charging Time ＜2 H Working Voltage : 5V Transmission Range : Up to 10m Working Temperature : -20°C-60°C Answer a Call Short press the control button twice. Reject call Long press the control button for 2 seconds. Activate Siri Long press the Left control button for 2 seconds to activate Siri. Volume Up Press the Right button once. End a call Press the control button twice. Play/Pause Press the control button twice. Previous Song Press the Left control button 3 times. Control Button Next Song Press the Right control button 3 times. Volume Down Press the Left button once. Step1 : Take the headphones out from charging case. Step 2: Hang the headphones on your ears. Gaming mode can provide you low latency form screen to your headphones when you playing game. Gaming Mode Long press the right control button 2 seconds to switch between music mode and game mode. ( Default Music Mode ） Open Ear Headphones x2 Charging Case x1USB Charging Cable x1User Manual x1 Setp 1: Please turn on the bluetooth function on your cellphone/laptop. Step 2: Open the charging case, take the headphones out, the red and white lights flash on headphones. Step 3: Select“HJ-09”on your phone/laptop and connect the device, the red and white lights off when you connect successfully. (The headphones will automatically turn off if not connected the device within 3 minutes.) Reset Headphones If only one headphone connects to phone or the headphones can not pair together, Please try the reset steps: Setp 1: Take the headphones out from charging case. Step 2: Press the control button 5 times. FCC Warnning: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: AOCE Corporation Inc. FRN: 0033401381 Contact Name: Johnson Wang Address: 6547 N Academy Bivd #2266 Springs, CO 80918 United State Telephone No: (346) 582-5234 Email: [email protected] Applicant: Company name: Dongguanshitianchenkejiyouxiangongsi Product Description: OPEN EAR WIRELESS HEADPHONES Grantee code: 2BCMH FCC ID: 2BCMH-HJ-09 Contact Name: Liangchen Yu Address: YanTianCun Nanshan gongye cheng E05hao 1dong Silou401 Dongguanshi Fenggangzhen Guangdong sheng 523690 Telephone No: 13431544147 Email: [email protected] [Dongguanshitianchenkejiyouxiangongsi] certifies that, as of the date of this filing of the application with the TCB, [AOCE Corporation Inc.] is our designated US agent for service of process for the above referenced FCC ID. [Dongguanshitianchenkejiyouxiangongsi] accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any commission related proceeding involving equipment. [AOCE Corporation Inc.] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2023/8/25 Applicant’s Name: Liangchen Yu US Agent’s Name: Johnson Wang Title:Manager Title: PM Signature Signature

C5266091_X24_Ed.2 1/1 “AttestationStatements” TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 TheCommissionadoptedrulesthatprohibitequipmentauthorizationfor“covered” telecommunicationsequipmentandvideosurveillanceequipmentproducedbyentitiesidentified ontheCommission’sCoveredList 1 ,whichisperiodicallyupdated.SeetheCoveredListformore details.ThisAttestationStatementistoconfirmthatwefollowtheSection2.911(d)(5)(i)-(ii) Applicant Companyname:Dongguanshitianchenkejiyouxiangongsi Granteecode:2BCMH FCCID:2BCMH-HJ-09 ContactName:LiangchenYu Address:YanTianCunNanshangongyechengE05hao1dongSilou401 DongguanshiFenggangzhenGuangdongsheng523690 TelephoneNo:13431544147 FaxNo:/ Email:[email protected] i.[ Dongguanshitianchenkejiyouxiangongsi ](“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules.Theapplicantmustsignthiscertification. ii.[Dongguanshitianchenkejiyouxiangongsi](“theapplicant”)certifiesthat,asof thedateofthefilingoftheapplication,theapplicant[isnot](asaspecifically namedentityoranyofitssubsidiariesoraffiliates)identifiedontheCovered Listasanentityproducing“covered”equipment.Theapplicantmustsign thiscertification. [Dongguanshitianchenkejiyouxiangongsi](“theapplicant”)certifiesthat,as ofthedateofthefilingoftheapplication,theapplicant[isnot]identifiedonthe CoveredList asanentityproducing“covered” equipment. Date:2023/08/25 Applicant’sName:LiangchenYu Title:Manager Signature 1 TheCommission’sCoveredListispublishedbythePublicSafetyandHomelandSecurityBureauandpostedonthe Commission’swebsite.ThisCoveredList,whichisperiodicallyupdated,identifiesparticularequipment,producedby particularentities,thatconstitutes“covered”equipment.https://www.fcc.gov/supplychain/coveredlist

C5266091_X8_Ed.1 1/1 LetterofAuthorization <Dongguanshitianchenkejiyouxiangongsi> Company:Dongguanshitianchenkejiyouxiangongsi Address:YanTianCunNanshangongyechengE05hao1dong Silou401DongguanshiFenggangzhenGuangdong sheng523690 ProductName:OPENEARWIRELESSHEADPHONES ModelNumber:HJ-09 FCCIdentifier:2BCMH-HJ-09 WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:LiangchenYuDate: 2023/08/25 Title:Manager Signatureofapplicant:

C5266091_X10_Ed.2 1/1 <Dongguanshitianchenkejiyouxiangongsi> OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date: 2023/08/25 Subject:RequestforConfidentiality FCCID:2BCMH-HJ-09 ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo ☐ BlockDiagram ☒☐ Schematics ☒☐ TestReportNoNo TestSetupPhotosNo ☐ User’sManual ☐ NOTE 1 ☐ InternalPhotos ☐ NOTE 1 ☐ PartsList/TuneUp ☐☐ RFExposureInfoNoNo OperationalDescription ☒☐ CoverLetter(s)NoNo SDRSoftware/SecurityInfo ☐ No NOTE1:Long-TermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONG-TERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:Short-TermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Incaseofshort-termConfidentiality,theapplicantrequeststheexhibitsselected abovearewithheldfrompublicviewforaperiodof______daysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name:LiangchenYu Title:Manager

FCCID:2BCMH-HJ-09 ExternalPhotosoftheEUT Photo1 Photo2 LeftsidePhoto3 FCCID:2BCMH-HJ-09 Photo4 Photo5 Photo6 FCCID:2BCMH-HJ-09 Photo7 Photo8 RightsidePhoto9 FCCID:2BCMH-HJ-09 Photo10 Photo11 Photo12 FCCID:2BCMH-HJ-09 Photo13 Photo14

LabelandLocation Size:L:3.0cm*W:2.0cm LabelandLocation ModelNo.:HJ-09 FCCID:2BCMH-HJ-09

FCC ID: 2BCMH-HJ-09 Internal Photos of the EUT Left side Photo 1 Photo 2 Photo 3 FCC ID: 2BCMH-HJ-09 Photo 4 Photo 5 Photo 6 Chip BT Antenna FCC ID: 2BCMH-HJ-09 Photo 7 Photo 8 Photo 9 FCC ID: 2BCMH-HJ-09 Right side Photo 10 Photo 11 Photo 12 Chip BT Antenna FCC ID: 2BCMH-HJ-09 Photo 13 Photo 14 Photo 15 FCC ID: 2BCMH-HJ-09 Photo 16 Photo 17 Photo 18

RFExposureevaluation FCCID:2BCMH-HJ-09 1.1.ApplicableStandard Accordingto§1.1307(b)(1),systemsoperatingundertheprovisionsofthissectionshallbeoperatedina mannerthatensuresthatthepublicisnotexposedtoradiofrequencyenergylevelinexcessofthe Commission’sguidelines. Accordingto§1.1310and§2.1093RFexposurerequirement KDB447498v06:MobileandPortableDevicesRFExposureProceduresandEquipmentAuthorization Policies 1.2.Requirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1StandaloneSARtest exclusionconsiderations:“UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures, standalone1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions, bymeasurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTestExclusion Thresholdcondition,listedbelow,issatisfied.Thesetestexclusionconditionsarebasedonsource-based time-averagedmaximumconductedoutputpoweroftheRFchannelrequiringevaluation,adjustedfortune-up tolerance,andtheminimumtestseparationdistancerequiredfortheexposureconditions.22Theminimum testseparationdistanceisdeterminedbythesmallestdistancefromtheantennaandradiatingstructuresor outersurfaceofthedevice,accordingtothehostformfactor,exposureconditionsandplatformrequirements, toanypartofthebodyorextremityofauserorbystander(see5)ofsection4.1).ToqualifyforSARtest exclusion,thetestseparationdistancesappliedmustbefullyexplainedandjustifiedbytheoperating configurationsandexposureconditionsofthetransmitterandapplicablehostplatformrequirements,typically intheSARmeasurementorSARanalysisreport,accordingtotherequiredpublishedRFexposureKDB procedures.WhennootherRFexposuretestingorreportingisrequired,astatementofjustificationand compliancemustbeincludedintheequipmentapproval,inlieuoftheSARreport,toqualifyfortheSARtest exclusion.Whenrequired,thedevicespecificconditionsdescribedintheotherpublishedRFexposureKDB proceduresmustbesatisfiedbeforeapplyingtheseSARtestexclusionprovisions;forexample,handheldPTT two-wayradios,handsets,laptops&tabletsetc.23“ [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance,mm)] · [√f(GHz)] ≤ 3.0for1-gSARand ≤ 7.5for10-gextremitySAR,where: •f(GHz)istheRFchanneltransmitfrequencyinGHz •PoweranddistanceareroundedtothenearestmWandmmbeforecalculation • Theresultisroundedtoonedecimalplaceforcomparison •3.0and7.5arereferredtoasthenumericthresholdsinthestep2below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mmandfor transmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtestseparationdistanceis < 5 mm,adistanceof5mmaccordingto5)insection4.1isappliedtodetermineSARtestexclusion. 1.3.Manufacturingtolerance GFSK(Peak) ChannelChannel0Channel39Channel78 Target(dBm)0.00.00.0 Tolerance±(dB)1.01.01.0 π/4DQPSK(Peak) ChannelChannel0Channel39Channel78 Target(dBm)0.00.00.0 Tolerance±(dB)1.01.01.0 Page2of2 2.EvaluationResult EvaluationResults Band/Modef(GHz) Antenna Distance (mm) RFoutputpower (includingtune-up tolerance) SARTest Exclusion Threshold SARTest Exclusion dBmmW BT2.45051.01.25890.3130<3.0Yes 3.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093fortheuncontrolledRFExposure andSARExclusionThresholdperKDB447498v06 .....................EndofReport.........................

1. Antenna Description: Antenna type Chip antenna Model CS-2450-16-C Frequency range 2400-2500MHz Manufacturer Dongguanshitianchenkejiyouxiangongsi ANT Peak Gain 2.36 dBi 2. Antenna Photo: 3. Test Equipment & Conditions 3.1 Test instrument VSWR is tested using Agilent E5071B connected to a hand mechanism, and the status is free space. 3.2 Test environment and methods 4．Antenna Radiation Pattern 2400MHz 2450MHz 2500MHz

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. .....................: FCC ID. .......................................... : CTA23081700401 2BCMH-HJ-09 Compiled by ( position+printed name+signature) ..: File administrators Zoey Cao Supervised by ( position+printed name+signature) ..: Project Engineer Amy Wen Approved by ( position+printed name+signature) ..: RF Manager Eric Wang Date of issue ....................................: Aug. 22, 2023 Testing Laboratory Name ..............: Shenzhen CTA Testing Technology Co., Ltd. Address ............................................: Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao‘an District, Shenzhen, China Applicant’s name ............................: Dongguanshitianchenkejiyouxiangongsi Address ............................................: YanTianCun Nanshan gongye cheng E05hao 1dong Silou401 Dongguanshi Fenggangzhen Guangdongsheng 523690 Test specification .......................... : Standard ...........................................: FCC Part 15.247 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description .................... : OPEN EAR WIRELESS HEADPHONES Trade Mark .......................................: N/A Manufacturer ....................................: Dongguanshitianchenkejiyouxiangongsi Model/Type reference ......................: HJ-09 Listed Models ..................................: N/A Modulation .......................................: GFSK, Π/4DQPSK Frequency ......................................... From 2402MHz to 2480MHz Rating ...............................................: DC 3.7V From Battery and DC 5.0V From external circuit Result ...............................................: PASS Report No.: CTA23081700401 Page 2 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : OPEN EAR WIRELESS HEADPHONES Model /Type : HJ-09 Listed Models : N/A Applicant : Dongguanshitianchenkejiyouxiangongsi Address : YanTianCun Nanshan gongye cheng E05hao 1dong Silou401 Dongguanshi Fenggangzhen Guangdongsheng 523690 Manufacturer : Dongguanshitianchenkejiyouxiangongsi Address : YanTianCun Nanshan gongye cheng E05hao 1dong Silou401 Dongguanshi Fenggangzhen Guangdongsheng 523690 Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA23081700401 Page 3 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 T E S T S T A N D A R D S ................................................................. 4 2 S U M M A R Y............................................................................. 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Equipment Under Test 5 2.4 Short description of the Equipment under Test (EUT) 5 2.5 EUT operation mode 6 2.6 Block Diagram of Test Setup 6 2.7 Related Submittal(s) / Grant (s) 6 2.8 Modifications 6 3 T E S T E N V I R O N M E N T .............................................................. 7 3.1 Address of the test laboratory 7 3.2 Test Facility 7 3.3 Environmental conditions 7 3.4 Summary of measurement results 8 3.5 Statement of the measurement uncertainty 8 3.6 Equipments Used during the Test 9 4 T E S T C O N D I T I O N S A N D R E S U L T S ........................................... 10 4.1 AC Power Conducted Emission 10 4.2 Radiated Emission 13 4.3 Maximum Peak Output Power 19 4.4 20dB Bandwidth 20 4.5 Frequency Separation 23 4.6 Number of hopping frequency 25 4.7 Time of Occupancy (Dwell Time) 27 4.8 Out-of-band Emissions 30 4.9 Pseudorandom Frequency Hopping Sequence 36 4.10 Antenna Requirement 37 5 T E S T S E T U P P H O T O S O F T H E E U T ......................................... 38 6 P H O T O S O F T H E E U T ........................................................... 39 Report No.: CTA23081700401 Page 4 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 1 T E S T S T A N D A R D S The tests were performed according to following standards: FCC Rules Part 15.247: Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in operation within the bands of 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz. ANSI C63.10-2013: American National Standard for Testing Unlicensed Wireless Devices Report No.: CTA23081700401 Page 5 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 2 S U M M A R Y 2.…

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Report No.: CTA23081700401 Page 31 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn GFSK(CH00) GFSK(CH39) reference reference 30MHz-1G 30MHz-1G 1G-25G 1G-25G Report No.: CTA23081700401 Page 32 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn GFSK(CH78) π/4DQPSK (CH00) reference reference 30MHz-1G 30MHz-1G 1G-25G 1G-25G Report No.: CTA23081700401 Page 33 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn π/4DQPSK (CH39) π/4DQPSK (CH78) reference reference 30MHz-1G 30MHz-1G 1G-25G 1G-25G Report No.: CTA23081700401 Page 34 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Band-edge Measurements for RF Conducted Emissions: GFSK Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Report No.: CTA23081700401 Page 35 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn π/4DQPSK Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Report No.: CTA23081700401 Page 36 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 4.9 Pseudorandom Frequency Hopping Sequence TEST APPLICABLE For 47 CFR Part 15C section 15.247 (a) (1) requirement: Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hop-ping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400–2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 125 mW. The system shall hop to channel frequencies that are selected at the system hopping rate from a pseudo randomly ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter. The system receivers shall have input bandwidths that match the hop-ping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals. EUT Pseudorandom Frequency Hopping Sequence Requirement The pseudorandom frequency hopping sequence may be generated in a nice-stage shift register whose 5 th and 9 th stage outputs are added in a modulo-two addition stage. And the result is fed back to the input of the first stage. The sequence begins with the first one of 9 consecutive ones, for example: the shift register is initialized with nine ones. ● Number of shift register stages:9 ● Length of pseudo-random sequence:29-1=511 bits ● Longest sequence of zeros:8(non-inverted signal) An example of pseudorandom frequency hopping sequence as follows: Each frequency used equally one the average by each transmitter. The system receiver have input bandwidths that match the hopping channel bandwidths of their corresponding transmitter and shift frequencies in synchronization with the transmitted signals. Report No.: CTA23081700401 Page 37 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 4.10 Antenna Requirement Standard Applicable For intentional device, according to FCC 47 CFR Section 15.203, an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. And according to FCC 47 CFR Section 15.247 (c), if transmitting antennas of directional gain greater than 6dBi are used, the power shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6dBi. Refer to statement below for compliance The manufacturer may design the unit so that the user can replace a broken antenna, but the use of a standard antenna jack or electrical connector is prohibited. Further, this requirement does not apply to intentional radiators that must be professionally installed. Antenna Connected Construction The maximum gain of antenna was 2.36 dBi. Remark:The antenna gain is provided by the customer , if the data provided by the customer is not accurate, Shenzhen CTA Testing Technology Co., Ltd. does not assume any responsibility. Report No.: CTA23081700401 Page 38 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 5 T e s t S e t u p P h o t o s o f t h e E U T Report No.: CTA23081700401 Page 39 of 49 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 6 P h o t o s o f t h e E U T Left side Report No.: CTA23081700401 Page 40 of 4…

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FCCID:2BCMH-HJ-09 TestSetupPhotosoftheEUT