XEG-AI303USB DAC AMPLIFIER

Z ENGLISH FRANÇAIS ESPAÑOL AI-303 USB DAC AMPLIFIER D01395520A OWNER’S MANUAL MODE D’EMPLOI MANUAL DEL USUARIO 2 CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. < The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of unin- sulated “dangerous voltage” within the product’s enclosure that may be of suf- ficient magnitude to constitute a risk of electric shock to persons. B The exclamation point within an equilat- eral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION oDO NOT REMOVE THE EXTERNAL CASES OR CABINETS TO EXPOSE THE ELECTRONICS. NO USER SERVICEABLE PARTS ARE INSIDE. oIF YOU ARE EXPERIENCING PROBLEMS WITH THIS PRODUCT, CONTACT THE STORE WHERE YOU PURCHASED THE UNIT FOR A SERVICE REFERRAL. DO NOT USE THE PRODUCT UNTIL IT HAS BEEN REPAIRED. oUSE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. IN USA/CANADA, USE ONLY ON 120V SUPPLY. 1) Read these instructions. 2) Keep these instructions. 3) Heed all warnings. 4) Follow all instructions. 5) Do not use this apparatus near water. 6) Clean only with dry cloth. 7) Do not block any ventilation openings. Install in accor- dance with the manufacturer's instructions. 8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 10) Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. 11) Only use attachments/accessories specified by the manufacturer. 12) Use only with the cart, stand, tri- pod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. 13) Unplug this apparatus during lightning storms or when unused for long periods of time. 14) Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. oThe apparatus draws nominal non-operating power from the AC outlet with its POWER or STANDBY/ON switch not in the ON position. oThe mains plug is used as the disconnect device, the disconnect device shall remain readily operable. oCaution should be taken when using earphones or headphones with the product because excessive sound pressure (volume) from earphones or headphones can cause hearing loss. WARNING Products with Class ! construction are equipped with a power supply cord that has a grounding plug. The cord of such a product must be plugged into an AC outlet that has a protective grounding connection. IMPORTANT SAFETY INSTRUCTIONS 3 CAUTION oDo not expose this apparatus to drips or splashes. oDo not place any objects filled with liquids, such as vases, on the apparatus. oDo not install this apparatus in a confined space such as a book case or similar unit. oThe apparatus should be located close enough to the AC outlet so that you can easily reach the power cord plug at any time. oIf the product uses batteries (including a battery pack or installed batteries), they should not be exposed to sunshine, fire or excessive heat. oCAUTION for products that use replaceable lithium batteries: there is danger of explosion if a battery is replaced with an incorrect type of battery. Replace only with the same or equivalent type. V Precautions concerning batteries Misuse of batteries could cause them to rupture or leak lead- ing to fire, injury or the staining of nearby things. Please read and observe the following precautions carefully. oBe sure to insert the batteries with correct positive (¥) and negative (^) orientations. oUse batteries of the same type. Never use different types of batteries together. oIf the remote control is not used for a long time (more than a month), remove the batteries to prevent them from leaking. oIf the batteries leak, wipe away the leakage inside the battery compartment and replace the batteries with new ones. oDo not use batteries of types other than those specified. Do not mix new batteries with old ones or use different types of batteries together. oDo not heat or disassemble batteries. Never throw bat- teries into fire or water. oDo not carry or store batteries with other metallic objects. The batteries could short circuit, leak or explode. oNever recharge a battery unless it is confirmed to be a rechargeable type. oDo not expose batteries to extremely low air pressure as it could result in an explosion or leakage of flammable liquids or gases. Declaration of Conformity Model number: AI-303 Trade name: TEAC Responsible party: 11 Trading Company, LLC Address: 3502 Woodview Trace #200 Indianapolis, IN 46268 U.S.A. URL: https://11tradingcompany.com/contact-us/ This device complies with Part.15 of FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference 2) This device must accept any interference received, including interference that may c…

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2022.11.29 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:CONFIDENTIALITYREQUESTFOR ( ProductName：USBDACAMPLIFIER ModelNumber：AI-303 FCCID：XEG-AI303 Preparedfor:TEACCorporation Address:1-47Ochiai,Tama-shi,Tokyo,Japan ) ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459 ofCFR47.Wehaverequestedthatthe(BlockDiagram,Schematics,Operational Description)requiredtobesubmittedwiththisapplicationbepermanentlywithheld frompublicreview. SPECIFYREASONFORREQUEST(Theabovematerialscontaintradesecrets andproprietaryinformationnotcustomarilyreleasedtothepublic.Thepublic disclosureofthesematerialsmaybeharmfultotheapplicantandprovide unjustifiedbenefitstoitscompetitors.) Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, AkiraSekiguchi

2022.11.29 TEACCorporation 1-47Ochiai,Tama-shi,Tokyo,Japan RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeSamLvatEMTEK(DONGGUAN)CO.,LTD.toacton ourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthesigning ofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseAct of1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, AkiraSekiguchi

ReportNo.EDG2209280018E002Page1of6Ver.1.0 FCCID:XEG-AI303 ReportNo.EDG2209280018E002Page2of6Ver.1.0 ReportNo.EDG2209280018E002Page3of6Ver.1.0 ReportNo.EDG2209280018E002Page4of6Ver.1.0 ReportNo.EDG2209280018E002Page5of6Ver.1.0 ReportNo.EDG2209280018E002Page6of6Ver.1.0

ReportNo.EDG2209280018E002Page1of7Ver.1.0 FCCID:XEG-AI303 ReportNo.EDG2209280018E002Page2of7Ver.1.0 ANT ReportNo.EDG2209280018E002Page3of7Ver.1.0 ReportNo.EDG2209280018E002Page4of7Ver.1.0 ReportNo.EDG2209280018E002Page5of7Ver.1.0 ReportNo.EDG2209280018E002Page6of7Ver.1.0 ReportNo.EDG2209280018E002Page7of7Ver.1.0

ReportNo.EDG2209280018E00202RPage1of7Ver.1.0 TESTREPORT ProductName：USBDACAMPLIFIER ModelNumber：AI-303 FCCID：XEG-AI303 Preparedfor:TEACCorporation Address:1-47Ochiai,Tama-shi,Tokyo,Japan Preparedby:EMTEK(DONGGUAN)CO.,LTD. Address:-1&2/F.,Building2,ZoneA,ZhongdaMarineBiotechnology ResearchandDevelopmentBase,No.9,XinchengAvenue, SongshanhuHigh-technologyIndustrialDevelopmentZone, Dongguan,Guangdong,China TEL:+86-0769-22807078 FAX:+86-0769-22807079 ReportNumber:EDG2209280018E00202R Date(s)ofTests:October08,2022toNovember16,2022 Dateofissue:November16,2022 $二维码$ ReportNo.EDG2209280018E00202RPage2of7Ver.1.0 TableofContents 1.TESTRESULTCERTIFICATION...............................................................................................................................................3 2.EUTSPECIFICATION.................................................................................................................................................................5 3.TESTREQUIREMENT:...............................................................................................................................................................6 RFEXPOSUREEVALUATION...................................................................................................................................................6 FRIISTRANSMISSIONFORMULA:PD=(POUT*G)\(4*PI*R 2 )..........................................................................................................6 4.MEASUREMENTRESULT.........................................................................................................................................................7 ReportNo.EDG2209280018E00202RPage3of7Ver.1.0 1.TESTRESULTCERTIFICATION Applicant:TEACCorporation Address:1-47Ochiai,Tama-shi,Tokyo,Japan Manufacturer:HotelTechnologiesInc. Address:1-47Ochiai,Tama-shi,Tokyo,Japan Factory:DongguanTEACElectronicsCo.,Ltd. Address: BuildingD5-6floorsNo.1ShangxingLuShangjiaoChang-anTown,Dongguan City,Guangdong,Province,523878 EUT:USBDACAMPLIFIER ModelName:AI-303 Trademark:TEAC MeasurementProcedureUsed: APPLICABLESTANDARDS STANDARDTESTRESULT FCC1.1310：§1.1307(b) PASS TheaboveequipmentwastestedbyEMTEK(DONGGUAN)CO.,LTD.Thetestdata,dataevaluation,test procedures,andequipmentconfigurationsshowninthisreportweremadeinaccordancewiththeprocedures giveninANSIC63.10(2013)andtheenergyemittedbythesampleEUTtestedasdescribedinthisreportisin compliancewiththerequirementsofFCCRulesFCC1.1310：§1.1307(b). Thetestresultsofthisreportrelateonlytothetestedsampleidentifiedinthisreport DateofTest:October08,2022toNovember16,2022 Preparedby: XiaYang/Editor Reviewer: TimDong/Supervisor Approve&AuthorizedSigner: SamLv/Manager ReportNo.EDG2209280018E00202RPage4of7Ver.1.0 ModifiedHistory VersionReportNo.RevisionDateSummary EDG2209280018E00202RNovember16,2022OriginalReport ReportNo.EDG2209280018E00202RPage5of7Ver.1.0 2.EUTSpecification CharacteristicsDescription Product:USBDACAMPLIFIER ModelNumber:AI-303 Sample:1# DeviceType: BluetoothV4.2 DataRate: 1MbpsforGFSKmodulation 2Mbpsforπ/4-DQPSKmodulation 3Mbpsfor8DPSKmodulation Modulation: GFSK,π/4-DQPSK,8DPSK OperatingFrequency Range(s): 2402-2480MHz NumberofChannels: 79channels TransmitPowerMax: 7.16dBm(0.005200W) AntennaType: PCBAntenna AntennaGain:1.54dBi Powersupply: AC100-240V50/60Hz Evaluationapplied:MPEEvaluation SAREvaluation ReportNo.EDG2209280018E00202RPage6of7Ver.1.0 3. TestRequirement: RFEXPOSUREEVALUATION AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironment impactofhumanexposuretoradiofrequency(RF)Radiationasspecifiedin§1.1307(b) LimitsforMaximumPermissibleExposure(MPE) Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) Power Density(mW/cm 2 ) Average Time (A)LimitsforOccupational/ControlExposures 300-1500----F/3006 1500-100000----56 (B)LimitsforGeneralPopulation/UncontrolExposures 300-1500----F/15006 1500-100000----130 Friistransmissionformula:Pd=(Pout*G)\(4*pi*R 2 ) Where Pd=PowerdensityinmW/cm 2 Pout=outputpowertoantennainmW G=Numericgainoftheantennarelativetoisotropicantenna Pi=3.1416 R=distancebetweenobservationpointandcenteroftheradiatorincm PdthelimitofMPE,1mW/cm 2 .Ifweknowthemaximumgainofthendtotalpowerinputtotheantenna,through thecalculation,wewillknowthedistancewheretheMPElimitisreached. ReportNo.EDG2209280018E00202RPage7of7Ver.1.0 4. MeasurementResult Antennagain:1.54dBi ***EndofReport*** ModeFrequ ency (MHz) Output Power (dBm) Target Power W/tolerance (dBm) Maxtune uppower tolerance (dBm) Maxtune uppower tolerance (mW) Power Densityat R=20cm (mW/cm2) Limit (mW/c m2) Verdict GFSK 2402 6.816±175.010.001421 1PASS 2441 6.416±175.010.001421 1PASS 2480 7.167±186.310.001789 1PASS pi/4-DQPSK 2402 5.415±163.980.001129 1PASS 2441 5.445±163.980.001129 1PASS 2480 6.416±175.010.001421 1PASS 8-DPSK 2402 5.725±163.980.001129 1PASS 2441 5.705±163.980.001129 1PASS 2480 6.596±175.010.001421 1PASS

LINE IN MAX LEVL=+6dBV Analog Input Inpedance 16K Ohm LINE IN2LINE IN1 L R ネジ穴 AI-505 XLR_IN A-R750 ANALOG_IN GNDA_IGNDA_I GNDA_IGNDA_I GNDA_IGNDA_I GNDA_I N7V P7V N7V P7V N7V P7V N7V P7V GNDA_I P7V GNDA_I N7V GNDA_I GNDA_I GNDA_I GNDA_I GNDA_I GNDAGNDA_I GNDD P7V N7V GNDA_I GNDA_IGNDA_I GNDA_I P7V N7V GNDA_I GNDA_IGNDA_I GND_DIRGND_DAC GND_DIR GNDA_V DAC_OUTL 5 DAC_OUTR 5 MPX_DATA 8 MPX_L 2 MPX_R 2 MPX_CLK 8 SDET_L 2 SDET_R 2 /RCA_MUTE_C 8 Title SizeDocument NumberRev Date:Sheetof <Doc>EPP Audio_in B 19Wednesday, September 14, 2022 Title SizeDocument NumberRev Date:Sheetof <Doc>EPP Audio_in B 19Wednesday, September 14, 2022 Title SizeDocument NumberRev Date:Sheetof <Doc>EPP Audio_in B 19Wednesday, September 14, 2022 C12 N.M.(0.1U/16V Film) C11 220P Film TP3 C4 220P Film R16 10K_2125 TP10 + C8N.M.(100u/25V AX[6.3mm]) R8 N.M.(100K_2125) TP173 W1Patern C2 10U 25V 1206 R5 10K_2125 C9 220P Film R1447 + C5N.M.(100u/25V AX[6.3mm]) TP4 TP6 C1 N.M.(0.1U/16V Film) TP177 P2 B6B-PH-SM4(LF)(SN) 1 2 3 4 5 6 + C3 100u/25V AX[6.3mm] TP11 D2 N.M.(RB558WM) 1 A 2 C 3 A/C R20 10K_2125 R1347 D4 N.M.(RB558WM) 1 A 2 C 3 A/C TP174 R10 10K_2125 R1147 R1 330_2125 R9 N.M.(100K_2125) W79 Patern + C6 100u/25V AX[6.3mm] NJU72750V U1 V+ 1 INA1 2 INB1 3 INA2 4 INB2 5 INA3 6 INB3 7 INA4 8 INB4 9 INA5 10 INB5 11 INA6 12 INB6 13 INA7 14 INB7 15 REF 16 DATA 17 CLOCK 18 NC 19 NC 20 OUTB3 21 OUTA3 22 REF_B 23 OUTB2 24 OUTA2 25 REF_A 26 OUTB1 27 OUTA1 28 NC 29 ADR0 30 ADR1 31 V- 32 TP175 C14 220P Film R15 330_2125 W78Patern TP12 R1247 R3 0_2125 D1 N.M.(RB558WM) 1 A 2 C 3 A/C W2Patern W75 Patern W84 Patern R7 330_2125 D3 N.M.(RB558WM) 1 A 2 C 3 A/C W3Patern TP176 J1 RCA-YKC-3885 123456 TP13 TP5 TP7 + C7 100u/25V AX[6.3mm] C13 10U 25V 1206 TP15 R19 10K_2125 TP8 TP14 R60_2125 R4 330_2125 TP1 R2 10K_2125 SCREW SC1 1 2 3 4 TP16 + C10 100u/25V AX[6.3mm] TP9 P1 B11B-ZR-SM4(LF)(SN) 1 2 3 4 5 6 7 8 9 10 11 TP172 TP2 TP17 LINE1_L LINE2_L LINE1_R LINE2_R EX_LINEL EX_LINER EX_LINEL EX_LINER EX_OUTL EX_OUTR EX_OUTL EX_OUTR MPX_DATA MPX_CLK XLR_IN_L XLR_IN_R XLR_IN_L XLR_IN_R For Hypex For Hypex For Rear PCB For AI-505 Meter Circuit R_Audio_OUT- is guarded by GNDA_VR L_Audio_OUT- is guarded by GNDA_VL GNDA_VGNDA_V N7V GNDA_V GNDA_V P7V GNDA_V GNDA_V GNDA_V GNDA_V P15V GNDA_V N15V GNDA_V GNDA_V P15V GNDA_V N15V GNDD P3V3 GNDDGNDD GNDD GNDD GNDD GNDA_V GNDA_V N7V GNDA_VGNDA_V GNDA_V GNDA_V GNDA_V P7V GNDA_V GNDA_V GNDA_V GNDA_V N7V GNDAGNDA_V GNDA_V GNDA_V GNDA_V GNDA_V P3V3_Stby GNDA_V P3V3_Stby P15V N15V GNDA_V P15V GNDA_V P15V N15V GNDA_V GNDA_V GNDA_V GNDA_V GNDA_VL GNDA_VR GNDA_V GNDA_V GNDA_VL GNDA_VR R_Audio_OUT- 3 SOUND_DET 8 MPX_L1 VOL_LATCH8 /SPI1_SCK8 SPI1_MOSI8 L_Audio_OUT- 3 MPX_R1 SDET_L1 SDET_R1 /HP_DET8 /PAMP_MUTE_C3,8 /HP_MUTE_C8 /XF_MONO8 Title SizeDocument NumberRev Date:Sheetof <Doc>EPP Volume A3 29Wednesday, September 14, 2022 Title SizeDocument NumberRev Date:Sheetof <Doc>EPP Volume A3 29Wednesday, September 14, 2022 Title SizeDocument NumberRev Date:Sheetof <Doc>EPP Volume A3 29Wednesday, September 14, 2022 TP26 W72 Patern R63 47 R4347 TP32 Q8 2SA1037AK 1 3 2 R4447 W60 Patern C52 N.M.(0.1U) C23 0.1U/16V Film + C46 100U/25V MVE [6.3mm] R544.7K_2125_F C65 0.1U R25 2.2K_2125_F R364.7K_2125_F + C48 100U/25V MVE [6.3mm] C63470P R454 10K R26 2.7K_2125_F TP19 P3 N.M.(B6B-ZR-SM4(LF)(SN)) 1 2 3 4 5 6 R60 10K + C26 100U/25V MVE [6.3mm] R474.7K_2125_F R46 10K C47 0.1U R56 4.7K_2125_F R45 0 R67 220K R37 4.7K_2125_F TP33 R23 4.7K_2125_F + C45 100U/25V MVE [6.3mm]R51 2.7K_2125_F + C42 100U/25V MVE [6.3mm] P20 B9B-PH-SM4(LF)(SN) 1 2 3 4 5 6 7 8 9 TP20 W71 Patern C69 0.01U + - U6B NE5532ADR 5 6 7 C28 1000P + - U3B NE5532ADR 5 6 7 R50 4.7K_2125_F C43220P Film R390 + C32 100U/25V MVE [6.3mm] W69 Patern + C53 100U/25V MVE [6.3mm] R62 270K W65Patern R22 4.7K_2125_F C58 1U/50V 0603 W89 Patern C61 1000P C44 1000P + C18 100U/25V MVE [6.3mm] C67 1U/50V 0603 C62 0.1U R58 1K TP34 R66 10K C27 0.1U W73Patern C346 1U/50V 0603 TP21 C68 100P QS8K11 Q11A S1 1 G1 2 D3 7 D4 8 + C39 100U/25V MVE [6.3mm] TP29 R400 R457 100K R64 2.2K U5 NJW1195A INA1 1 INA2 2 INA3 3 INA4 4 INB1 32 INB2 31 INB3 30 INB4 29 OUT1A 8 OUT1B 25 OUT2A 12 OUT2B 21 DCCAP1A 6 DCCAP1B 27 DCCAP2A 10 DCCAP2B 23 V+ 18 V- 17 VDDOUT 13 GND0 5 GND1 7 GND2 9 GND3 11 GND4 24 GND5 26 GND6 28 ADR0 19 ADR1 20 DATA 14 CLOCK 15 LATCH 16 DIFF 22 + C31 100U/25V MVE [6.3mm] W4Patern R68 10K + - U7B NJM4580CG 5 6 7 R453 33K C55 1000P TP23 + C50 N.M.(100u/25V AX[6.3mm]) W64Patern TP30 QS8K11 Q11B S2 3 G2 4 D1 5 D2 6 R330 R456 100K W70 Patern C19 220P Film TP22 TP25 QS8K11 Q7A S1 1 G1 2 D3 7 D4 8 C49 0.1U/16V Film W68 Patern R57 2.2K Q9 2SC4081 1 3 2 W93 Patern C54 470P W67 Patern TP31 R4247 R350 + C21 N.M.(100u/25V AX[6.3mm]) QS8K11 Q7B S2 3 G2 4 D1 5 D2 6 + - V+ V- U6A NE5532ADR 3 2 1 8 4 TP24 + C30 100U/25V MVE [6.3mm] D9 RB558WM 1 A 2 C 3 A/C R49 2.2K_2125_F R455 10K + - V+ V- U3A NE5532ADR 3 2 1 8 4 R5310K W88 Patern W92 Patern R65 1K TP18 C29 N.M.(0.1U) R6110K C56 0.1U U8 NJU7181RB1 IN 1 AMP_OUT 2 TRIN 3 GND 4 CAP_D 5 RES_D 6 OUT 7 VCC 8 R452 33K C17 N.M.(0.1U) C64 1000P C57 220P Film C41 N.M.(0.1U) C40 1000P + - V+ V- U7A NJM4580CG 3 2 1 8 4 C34220P Film W66 Patern W59 Patern HP_L- HP_R- HP_R+ MPX_L MPX_RL_ADD_LINE L_MAIN_LINE R_ADD_LINE R_MAIN_LINEHP_L+ HP_R+ HP_L+ HP_L+ HP_R+ /XMONO /XMONO /XMONO For AMP CH1 CH2 Vout=(Rx+Ry)*1.25/ Rx H:Enable From AI-505 Trans TRANS 3E0833700A AX-501,UD-501 TRANS 0.2A +-15V OUTPUT Input Mulchi 100V-230V R_Audio_OUT- is guarded by GNDA_VR L_Audio_OUT- is guarded by GNDA_VL N18V P18V P5V_Stby GNDD GNDA P3V3P3V3 GNDD P3V3P3V3 GNDD GNDAGNDD GNDD GNDD GNDD P3V3_Stby GNDD GNDD P5V_Stby GNDD P18V N18V GNDA N15V P15V N7V P7V GNDA_VL GNDA_VR GNDD GNDD P5V_Stby GNDA GNDA /POWER_Good8/DC_Error8 PS_Enable 8 /PAMP_Clip8 AMP_Thermal8 L_Audio_OUT- 2 R_Audio_OUT- 2 /PAMP_MUTE_C 2,8 Title SizeDocument NumberRev Date:Sheetof <Doc>EPP For Power_Amp A4 39Wednesday, September 14, 2022 Title SizeDocument NumberRev Date:Sheetof <Doc>EPP For Power_Amp A4 39Wednesday, September 14, 2…

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(A).Printedantennapattern: Printedantennatestreport *50ohmfeedlineshouldbedesignedtomatch50Ωcharacteristicimpedance,dependingonPCBmaterial andthickness ITEMANTSPEC ModelName2.4GANT MAX.Gain1.54dBi ManufacturerHotelTechnologiesInc. Address1-47Ochiai,Tama-shi,Tokyo,Japan (B)TestBoard: (B1).Withoutmatchingcircuit:(B2).Withmatchingcircuit: Returnloss Smithchart VSWR (C)RadiationPatternsoftestboard(withmatching) GainTable(Unit:dBi): @2.45G Hz Peak gain Avg.gain X-Y-H1. 5 - 3.4 X-Y-V- 10.1 - 17.1 X-Z-H- 1.9 - 6.0 X-Z-V1.1- 3.0 Y-Z-H- 1.5 - 6.9 Y-Z-V- 1. - 3.5 [email protected] [email protected] [email protected]

ReportNo. EDG2209280018E00201RPage 1 of 71Ver.1.0 TEST REPORT ProductName ： USB DAC AMPLIFIER ModelNumber ： AI-303 FCC ID ： XEG-AI303 Preparedfor:TEACCorporation Address:1-47 Ochiai,Tama-shi,Tokyo,Japan Preparedby:EMTEK(DONGGUAN)CO.,LTD. Address:-1&2/F.,Building2, ZoneA, ZhongdaMarineBiotechnology Researchand DevelopmentBase,No.9,XinchengAvenue, SongshanhuHigh-technologyIndustrialDevelopmentZone, Dongguan,Guangdong,China TEL:+86-0769-22807078 FAX:+86-0769-22807079 ReportNumber:EDG2209280018E00201R Date (s) of Test s:October08, 2022to November16, 2022 Dateof issue:November16, 2022 $二维码$ ReportNo. EDG2209280018E00201RPage 2 of 71Ver.1.0 Tableof Contents 1 TESTRESULTCERTIFICATION...............................................................................................................3 2 EUT TECHNICALDESCRIPTION..............................................................................................................5 3 SUMMARYOF TESTRESULT..................................................................................................................6 4 TESTMETHODOLOGY..............................................................................................................................7 4.1GENERALDESCRIPTIONOF APPLIEDSTANDARDS...............................................................7 4.2MEASUREMENTEQUIPMENTUSED..........................................................................................7 4.3DESCRIPTIONOF TESTMODES................................................................................................8 5 FACILITIESANDACCREDITATIONS.......................................................................................................9 5.1FACILITIES....................................................................................................................................9 5.2EQUIPMENT..................................................................................................................................9 5.3LABORATORYACCREDITATIONSANDLISTINGS....................................................................9 6 TESTSYSTEMUNCERTAINTY..............................................................................................................10 7 SETUPOF EQUIPMENTUNDERTEST..................................................................................................11 7.1RADIOFREQUENCYTESTSETUP1........................................................................................11 7.2RADIOFREQUENCYTESTSETUP2........................................................................................11 7.3CONDUCTEDEMISSIONTESTSETUP....................................................................................13 7.4BLOCKDIAGRAMCONFIGURATIONOF TESTSYSTEM........................................................14 7.5SUPPORTEQUIPMENT..............................................................................................................14 8 FREQUENCYHOPPINGSYSTEMREQUIREMENTS............................................................................15 8.1STANDARDAPPLICABLE...........................................................................................................15 8.2EUT PSEUDORANDOMFREQUENCYHOPPINGSEQUENCE...............................................15 8.3EQUALHOPPINGFREQUENCYUSE .......................................................................................16 8.4FREQUENCYHOPPINGSYSTEM.............................................................................................16 9 TESTREQUIREMENTS...........................................................................................................................17 9.120DB&99%BANDWIDTH.............................................................................................................17 9.2CARRIERFREQUENCYSEPARATION.....................................................................................29 9.3NUMBEROF HOPPINGFREQUENCIES...................................................................................32 9.4AVERAGETIMEOF OCCUPANCY(DWELLTIME)...................................................................35 9.5MAXIMUMPEAKCONDUCTEDOUTPUTPOWER...................................................................41 9.6CONDUCTEDSUPRIOUSEMISSION........................................................................................47 9.7RADIATEDSPURIOUSEMISSION.............................................................................................57 9.8CONDUCTEDEMISSIONTEST.................................................................................................66 9.9ANTENNAAPPLICATION...........................................................................................................69 ReportNo. EDG2209280018E00201RPage 3 of 71Ver.1.0 1 TEST RESULTCERTIFICATION Applicant:TEACCorporation Address:1-47 Ochiai,Tama-shi,Tokyo,Japan Manufacturer:HotelTechnologiesInc. Address:1-47 Ochiai,Tama-shi,Tokyo,Japan Factory:DongguanTEACElectronicsCo.,Ltd. Address: BuildingD 5-6 floorsNo.1ShangxingLu ShangjiaoChang-anTown,Dongguan City,Guangdong,Province,523878 EUT:USBDACAMPLIFIER ModelName:AI-303 Trademark:TEAC MeasurementProcedureUsed: APPLICABLESTANDARDS STANDARDTEST RESULT FCC47 CFRPart 2, SubpartJ FCC47 CFRPart 15, SubpartC PASS IC RSS-GEN,Issue5(04-2018)+A1(03-2019)+A2(02-2021) IC RSS-247Issue2(02-2017) PASS The aboveequipmentwas testedby EMTEK(DONGGUAN) CO.,LTD.The test data,dataevaluation, test procedures,and equipmentconfigurationsshownin this reportweremadein accordancewith the proceduresgivenin ANSIC63.10(2013)and the energyemittedby the sampleEUT testedas described in this reportis in compliancewith the requirementsof FCCRulesPart 2, Part 15.247,IC RSS-247Issue 2 and IC RSS-GEN,Issue5. The test resultsof this reportrelateonly to the testedsampleidentifiedin this report Dateof Test :October08, 2022to November16, 2022 Preparedby : Xia Yang/Editor Reviewer: Tim Dong/ Supervisor Approve& AuthorizedSigner: SamLv / Manager Repo…

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ReportNo.EDG2209280018E002Page1of2Ver.1.0 FCCID:XEG-AI303 ReportNo.EDG2209280018E002Page2of2Ver.1.0