2A3WI-TP509Audio DAC

GuangzhouTOPPINGTechnologyCo.,Ltd ModelDifference Productdescription:AudioDAC Modelname:TP509 TP509A,TP509B,TP509C,TP509D TradeName:TOPPING FCCID:2A3WI-TP509 AllthemodelarethesamecircuitandRFmodule,onlyformodelname. Regards Sincerely Client’ssignature: Client’sname/title:Lvlin(N/A) Contactinformation/address:Rm201,26thJiaomenRd,Huangge,Nansha,Guangzhou,China.

C5266091_X8_Ed.1 1/1 LetterofAuthorization <GuangzhouTOPPINGTechnologyCo.,Ltd> Company:GuangzhouTOPPINGTechnologyCo.,Ltd Address:Rm201,26thJiaomenRd,Huangge,Nansha,Guangzhou,China. ProductName:AudioDAC ModelNumber:TP509 TP509A,TP509B,TP509C,TP509D FCCIdentifier:2A3WI-TP509 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:LvlinDate:2022-08-22 Title:N/A Signatureofapplicant:

1/1 Offic Fed e 7435 Colum Subj e FCC To W Purs u (47C attac Abo v cons discl o comp It is corr e docu equip Sinc e Signa Nam Title: e of Engine eral Commu 5 Oakland M mbia, MD 2 ect: Reques ID:2A3WI-T Whom It May uant to th CFR0.457, 0 chment(s) a ve mentione idered as osure of ab petitor an u our under s espondent d uments and pment auth erely, ature: e: Lv lin : N/A <Guang eering Techn nications Co Mills Road 21046 st for Confid TP509 y Concern, he provisio 0.459), we as confident Exhibits ID Label/Loca Attestation St External Photo Block Diagram Schematics Test Report Test Setup Ph User’s Manua Internal Photo Parts List / Tu RF Exposure I Operational D Cover Letter(s SDR Software ed docume proprietar y bove docum nfair advan standing th during cert those infor orization is gzhou TOP nology ommission dentiality ns of Sec t are reques tial docume ation tatement os m hotos l os une Up Info Description s) e / Security Inf nt contains y informatio ments migh ntage in the hat all mea tification rev rmation wil issued. PPING Tec tions 0.457 sting the C nt from pub Lon Co n fo s detailed s on in oper ht be harm market. surement t view proce l be availab hnology Co 7 and 0.4 Commission blic disclosu g-Term nfidentiality S C No No No No No No system and ration of th mful to our test reports ess cannot ble for publ C5 o., Ltd> D 59 of Com to withho ure. Short-Term Confidentiality No No No No No equipment he equipm company s, FCC ID la be granted ic review o 266091_X10 Date: 2022-0 mmission's old the follo y t descriptio ent. The p and would abel format d as confid nce the gr a 0_Ed.1 08-22 rules owing n are public give t and ential ant of

EUTPHOTO(ExternalPhotos) BTANT

Labelandlabellocation AudioDAC FCCID:2A3WI-TP509

FCCID:2A3WI-TP509 RFExposureEvaluation Limits Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposure toradiofrequency(RF)radiationasspecifiedin1.1307(b) LimitsforMaximumPermissibleExposure(MPE) Frequencyrange (MHz) Electricfield strength (V/m) Magneticfieldstrength (A/m) Powerdensity (mW/cm 2 ) Averagingtime (minutes) (A)LimitsforOccupational/ControlledExposures 0.3–3.06141.63*(100)6 3.0–301842/f4.89/f*(900/f 2 )6 30–30061.40.1631.06 300–1500f/3006 1500–100,00056 (B)LimitsforGeneralPopulation/UncontrolledExposure 0.3–1.346141.63*(100)30 1.34–30824/f2.19/f*(180/f 2 )30 30–30027.50.0730.230 300–1500f/150030 1500–100,0001.030 f=frequencyinMHz Friistransmissionformula:Pd=(Pout*G)/(4*pi*r 2 ) Where Pd=powerdensityinmW/cm 2 ,Pout=outputpowertoantennainmW; G=gainofantennainlinearscale,Pi=3.1416; R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm 2 .Ifweknowthemaximumgainoftheantennaandthetotalpowerinputto theantenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. TestProcedure SoftwareprovidedbyclientenabledtheEUTtotransmitandreceivedataatlowest,middleandhighest channelindividually. TestResultofRFExposureEvaluation BTmode Mode Outputpower toantenna (dBm) Outputpowerto antenna(mW) PowerDensityat R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result GFSK1.3311.360.0003821.0PASS π/4-DQPSK -1.2460.750.0002111.0PASS 8-DPSK-2.2780.590.0001661.0PASS Remark:antennagain=1.5dBi

Project No.: ZKT-2208125672E Page 1 of 75 FCC TEST REPORT FCC ID:2A3WI-TP509 Report Number. ............................... : ZKT-2208125672E Date of Test ....................................... Aug. 12, 2022 to Aug. 19, 2022 Date of issue .................................... : Aug. 19, 2022 Total number of pages ...................... 75 Test Result ..................................... : PASS Testing Laboratory. ....................... : Shenzhen ZKT Technology Co., Ltd. Address .......................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name ......................... : Guangzhou TOPPING Technology Co., Ltd Address .......................................... : Rm201, 26th Jiaomen Rd, Huangge, Nansha, Guangzhou, China. Manufacturer's name ................... : Guangzhou TOPPING Technology Co., Ltd Address .......................................... : Rm201, 26th Jiaomen Rd, Huangge, Nansha, Guangzhou, China. Test specification: Standard .......................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test procedure ................................. : / Non-standard test method ............. : N/A Test Report Form No. .................... : TRF-EL-112_V0 Test Report Form(s) Originator .... : ZKT Testing Master TRF .................................... : Dated: 2021-04-22 This device described above has been tested by ZKT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name ................................. : Audio DAC Trademark ...................................... : TOPPING Model/Type reference ...................... : TP509 TP509A, TP509B, TP509C, TP509D Ratings ............................................. : Input: AC100-240V 50-60Hz Project No.: ZKT-2208125672E Page 2 of 75 Testing procedure and testing location: Testing Laboratory ..................................... :Shenzhen ZKT Technology Co., Ltd. Address ...................................................... :1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Tom Zou Tested by (name + signature) .................... : Jackson Fang Reviewer (name + signature) ..................... : Lake Xie Approved (name + signature) .................... : Project No.: ZKT-2208125672E Page 3 of 75 Table of Contents Page 1. VERSION ............................................................... 5 2. TEST SUMMARY ........................................................ 6 2.1 TEST FACILITY ......................................................... 7 2.2 MEASUREMENT UNCERTAINTY ......................................... 7 3. GENERAL INFORMATION ................................................ 8 3.1 GENERAL DESCRIPTION OF EUT ........................................ 8 3.2 Test Setup Configuration .................................................. 9 3.3 Support Equipment ....................................................... 9 3.4 Test Mode ............................................................. 10 3.5 EQUIPMENTS LIST FOR ALL TEST ITEMS ................................ 11 4. EMC EMISSION TEST ................................................... 12 4.1 Conducted emissions .................................................... 12 4.1.1 POWER LINE CONDUCTED EMISSION Limits ........................... 12 4.1.2 TEST PROCEDURE ................................................... 12 4.1.3 DEVIATION FROM TEST STANDARD ................................... 12 4.1.4 TEST SETUP ......................................................... 12 4.1.5 EUT OPERATING CONDITIONS ........................................ 13 4.1.6 Test Result ........................................................... 14 4.2 Radiated emissions ..................................................... 16 4.2.1 Radiated Emission Limits ............................................... 16 4.2.2 TEST PROCEDURE ................................................... 16 4.2.3 DEVIATION FROM TEST STANDARD ................................... 17 4.2.4 TEST SETUP ......................................................... 17 4.2.5 EUT OPERATING CONDITIONS ........................................ 18 4.2.6 TEST RESULTS ...................................................... 19 5. RADIATED BAND EMISSION MEASUREMENT ............................ 28 5.1 Test Requirement: ...................................................... 28 5.2 TEST PROCEDURE .................................................... 28 5.3 DEVIATION FROM TEST STANDARD .................................... 29 5.4 TEST SETUP .......................................................... 29 5.5 EUT OPERATING CONDITIONS ......................................... 29 5.6 TEST RESULT ......................................................... 30 6. CONDUCTED BAND EDGE AND SPURIOUS EMISSION .................... 32 6.1 Limit ................................................................... 32 6.2 Test Setup ............................................................. 32 6.3 Test procedure ......................................................... 32 6.4 DEVIATION FROM STANDARD .......................................... 32 6.5 Test Result ............................................................. 33 7. 20DB&99% BANDWIDTH ................................................ 45 7.1 Test Setup ............................................................. 45 7.2 Limit ................................................................... 45 7.3 Test procedure ......................................................... 45…

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Project No.: ZKT-2208125672E Page 41 of 75 π/4-DQPSK No-hopping Band edge-left side π/4-DQPSK Hopping Band edge-left side Project No.: ZKT-2208125672E Page 42 of 75 π/4-DQPSK No-hopping Band edge-right side π/4-DQPSK Hopping Band edge-right side Project No.: ZKT-2208125672E Page 43 of 75 8-DPSK No-hopping Band edge-left side 8-DPSK Hopping Band edge-left side Project No.: ZKT-2208125672E Page 44 of 75 8-DPSK No-hopping Band edge-right side 8-DPSK Hopping Band edge-right side Project No.: ZKT-2208125672E Page 45 of 75 7. 20DB&99% BANDWIDTH Test Requirement: FCC Part15 C Section 15.247 (a)(1) Test Method: ANSI C63.10:2013 7.1 Test Setup 7.2 Limit N/A 7.3 Test procedure 1. Set RBW = 30 kHz. 2. Set the video bandwidth (VBW) ≥ 3 x RBW. 3. Detector = Peak. 4. Trace mode = max hold. 5. Sweep = auto couple. 6. Allow the trace to stabilize. 7. Measure the maximum width of the emission that is constrained by the frequencies associated with the two outermost amplitude points (upper and lower frequencies) that are attenuated by 6 dB relative to the maximum level measured in the fundamental emission. 7.4 DEVIATION FROM STANDARD No deviation. 7.5 Test Result Mode Test channel 20dB Emission Bandwidth (KHz) Result GFSK Lowest 871.2 Pass Middle 857.2 Highest 869.9 π/4-DQPSK Lowest 1420 Pass Middle 1397 Highest 1399 8-DPSK Lowest 1403 Pass Middle 1469 Highest 1435 Project No.: ZKT-2208125672E Page 46 of 75 Test plots GFSK Low Channel Project No.: ZKT-2208125672E Page 47 of 75 GFSK Middle Channel GFSK High Channel Project No.: ZKT-2208125672E Page 48 of 75 π/4-DQPSK Low Channel π/4-DQPSK Middle Channel Project No.: ZKT-2208125672E Page 49 of 75 π/4-DQPSK High Channel Project No.: ZKT-2208125672E Page 50 of 75 8-DPSK Low Channel Project No.: ZKT-2208125672E Page 51 of 75 8-DPSK Middle Channel 8-DPSK High Channel Project No.: ZKT-2208125672E Page 52 of 75 8. Maximum Peak Output Power Test Requirement: FCC Part15 C Section 15.247 (b)(1) Test Method: ANSI C63.10:2013 Limit: GFSK:30 dBm π/4-DQPSK & 8-DPSK:20.97 dBm 8.1 Block Diagram Of Test Setup 8.2 Limit For frequency hopping systems operating in the 2400-2483.5 MHz band employing at least 75 non-overlapping hopping channels, and all frequency hopping systems in the 5725-5850 MHz band: 1 watt. For all other frequency hopping systems in the 2400-2483.5 MHz band: 0.125 watts. For FHSs operating in the band 2400-2483.5 MHz, the maximum peak conducted output power shall not exceed 1.0 W if the hopset uses 75 or more hopping channels; the maximum peak conducted output power shall not exceed 0.125 W if the hopset uses less than 75 hopping channels. The e.i.r.p. shall not exceed 4 W. 8.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 2MHz. VBW =6MHz. Sweep = auto; Detector Function = Peak. 3. Keep the EUT in transmitting at lowest, medium and highest channel individually. Record the max value. 8.4 DEVIATION FROM STANDARD No deviation. 8.5 Test Result Mode Test channel Peak Output Power (dBm) FCC Limit (dBm) Result GFSK Lowest 1.331 30.00 Pass Middle 1.082 Highest 1.012 π/4-DQPSK Lowest -1.246 21.00 Pass Middle -1.501 Highest -1.736 8-DPSK Lowest -2.278 21.00 Pass Middle -2.542 Highest -2.864 Project No.: ZKT-2208125672E Page 53 of 75 Test plots GFSK Low Channel GFSK Middle Channel Project No.: ZKT-2208125672E Page 54 of 75 GFSK High Channel π/4-DQPSK Low Channel Project No.: ZKT-2208125672E Page 55 of 75 π/4-DQPSK Middle Channel π/4-DQPSK High Channel Project No.: ZKT-2208125672E Page 56 of 75 8-DPSK Low Channel 8-DPSK Middle Channel Project No.: ZKT-2208125672E Page 57 of 75 8-DPSK High Channel Project No.: ZKT-2208125672E Page 58 of 75 9. HOPPING CHANNEL SEPARATION Test Requirement: FCC Part15 C Section 15.247 (a)(1) Test Method: ANSI C63.10:2013 Receiver setup: RBW=100KHz, VBW=300KHz, detector=Peak Limit: GFSK: 20dB bandwidth π/4-DQPSK & 8DSK: 0.025MHz or 2/3 of the 20dB bandwidth (whichever is greater) 9.1 Test Setup 9.2 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. 9.3 DEVIATION FROM STANDARD No deviation. Project No.: ZKT-2208125672E Page 59 of 75 9.4 Test Result Modulation Test Channel Separation (MHz)Limit(MHz) Result GFSK Low 0.879 0.871 PASS GFSK Middle 1.119 0.857 PASS GFSK High 0.987 0.870 PASS π/4-DQPSK Low 0.999 0.947 PASS π/4-DQPSK Middle 1.149 0.931 PASS π/4-DQPSK High 1.005 0.933 PASS 8-DPSK Low 0.990 0.935 PASS 8-DPSK Middle 0.980 0.979 PASS 8-DPSK High 1.011 0.957 PASS Test plots GFSK Low Channel Project No.: ZKT-2208125672E Page 60 of 75 GFSK Middle Channel GFSK High Channel Project No.: ZKT-2208125672E Page 61 of 75 π/4-DQPSK Low Channel π/4-DQPSK Middle Channel Project No.: ZKT-2208125672E Page 62 of 75 π/4-DQPSK High Channel 8-DPSK Low Channel Project No.: ZKT-2208125672E Page 63 of 75 8-DPSK Middle Channel 8-DPSK High Channel Project No.: ZKT-2208125672E Page 64 of 75 10.NUMBER OF HOPPING FREQUENCY Test Requirement: FCC Part15 C Section 15.247 (a)(1)(iii) Test Method: ANSI C63.10:2013 Receiver setup: RBW=100kHz, VBW=300kHz, Frequency range=2400MHz-2483.5MHz, Detector=Peak Limit: 15 channels 10.1 Test Setup 10.2 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all of the hopping frequencies. The limit is specified in one…

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EUTTESTPHOTO