RF Exposure

FCC ID: 2AAEF-TB30

RF Exposure Info

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FCCID_4467022

Shenzhen Huaxia Testing Technology Co., Ltd 1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District, Shenzhen, China ‘all Telephone: +86—755—26648640 i = g \E }“ Fax: +86—755—26648637 Report Template Version: VO4 —#— U 1 Website: www.cga—cert.com Report Template Revision Date: 2018—07—06 RF Exposure Evaluation Report Report No. : CQASZ20190900877E—03 Applicant: Molu Technology Industrial Co., LTD Address of Applicant: 10F.—1, No. 24, Jilin Rd., Zhongshan Dist., Taipei City, Taiwan Equipment Under Test (EUT): Product: streaming music player All Model No.: TB30, TB31, TB32 Test Model No.: TB30 Brand Name: NEXUM FCC ID: 2AAEF—TB30 Standards: 47 CFR Part 1.1307 47 CFR Part 1.1310 KDB447498D01 General RF Exposure Guidance v0O6 Date of Receipt: 2019—09—05 Date of Test: 2019—09—05 to 2019—09—10 Date of Issue: 2019—09—10 Test Result : PASS® *In the configuration tested, the EUT complied with the standards specified above Tested By: To the ( Tom chen ) Reviewed By: §A'[ffk * z We Sheek Luo ) Approved By: C ( Jack Ai ) The test report is effective only with both signature and specialized stamp, The result(s) shown in this report refer only to the sample(s) tested. Without written approval of CQA, this report can‘t be reproduced except in full

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190900877E-03 1 Version Revision History Of Report Report No. Version Description Issue Date CQASZ20190900877E-03 Rev.01 Initial report 2019-09-10 Page:2 of 9

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190900877E-03 2 Contents Page 1 VERSION .....................................................................................................................................................................2 2 CONTENTS .................................................................................................................................................................3 3 GENERAL INFORMATION .......................................................................................................................................4 3.1 CLIENT INFORMATION................................................................................................................................................4 3.2 GENERAL DESCRIPTION OF EUT ................................................................................................................................4 3.3 GENERAL DESCRIPTION OF BT ..................................................................................................................................4 3.4 GENERAL DESCRIPTION OF WIFI ...............................................................................................................................5 4 RF EXPOSURE EVALUATION ................................................................................................................................6 4.1 RF EXPOSURE COMPLIANCE REQUIREMENT ..............................................................................................................6 4.1.1 Limits ..............................................................................................................................................................6 4.1.2 Test Procedure ..............................................................................................................................................6 4.2 1.1.3 EUT RF EXPOSURE EVALUATION ....................................................................................................................7 Page:3 of 9

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190900877E-03 3 General Information 3.1 Client Information Applicant: Molu Technology Industrial Co., LTD Address of Applicant: 10F.-1, No. 24, Jilin Rd., Zhongshan Dist., Taipei City, Taiwan Manufacturer: Shenzhen GGMM Industrial Company Limited Address of Manufacturer: Building No5,Yongxin Street,Shiyan,Baoan District,Shenzhen 3.2 General Description of EUT Product Name: streaming music player All Model No.: TB30, TB31, TB32 Test Model No.: TB30 Trade Mark: NEXUM Hardware Version: V1.2 Software Version: V6 Sample Type: Mobile Portable Fix Location Power Supply: Adapter Model: A18A-050100U-UB2 Input: 100~240V 50/60Hz Max0.2A Output: 5V 1A 3.3 General Description of BT Operation Frequency: 2402MHz~2480MHz Bluetooth Version: V5.0 Modulation Technique: Frequency Hopping Spread Spectrum(FHSS) Modulation Type: GFSK, π/4DQPSK, 8DPSK Number of Channel: 79 Hopping Channel Type: Adaptive Frequency Hopping systems Test Software of EUT: Blue test3 (manufacturer declare ) Antenna Type: internal antenna with ipex connector Antenna Gain: 3.8dBi Page:4 of 9

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190900877E-03 3.4 General Description of WIFI Operation Frequency: IEEE 802.11b/g/n(HT20): 2412MHz to 2462MHz IEEE 802.11n(HT40): 2422MHz to 2452MHz Channel Numbers: IEEE 802.11b/g, IEEE 802.11n HT20: 11 Channels IEEE 802.11n HT40: 7 Channels Channel Separation: 5MHz Type of Modulation: IEEE for 802.11b: DSSS(CCK,DQPSK,DBPSK) IEEE for 802.11g : OFDM(64QAM, 16QAM, QPSK, BPSK) IEEE for 802.11n(HT20 and HT40) : OFDM (64QAM, 16QAM, QPSK,BPSK) Transfer Rate: IEEE for 802.11b: 1Mbps/2Mbps/5.5Mbps/11Mbps IEEE for 802.11g : 6Mbps/9Mbps/12Mbps/18Mbps/24Mbps/36Mbps/48Mbps/54Mbps IEEE for 802.11n(HT20) : 6.5Mbps/13Mbps/19.5Mbps/26Mbps/39Mbps/52Mbps/58.5Mbps/65Mbps IEEE for 802.11n(HT40) : 13.5Mbps/27Mbps/40.5Mbps/54Mbps/81Mbps/108Mbps/121.5Mbps/135Mb ps Test Software of EUT: MT7628 QA 0.0.0.96 (manufacturer declare ) Antenna Type: internal antenna with ipex connector Antenna Gain: 3.8dBi Note: Model No.: TB30, TB31, TB32 Only the model TB30 was tested, since the electrical circuit design, layout, components used and internal wiring were identical for the above models, with difference being color of appearance and model name. Page:5 of 9

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190900877E-03 4 RF Exposure Evaluation 4.1 RF Exposure Compliance Requirement 4.1.1 Limits According to FCC Part1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in part1.1307(b) F= Frequency in MHz Friis Formula Friis transmission formula: Pd = (Pout*G)/(4* Pi * R 2) Where Pd = power density in mW/cm2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. 4.1.2 Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Page:6 of 9

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190900877E-03 4.2 1.1.3 EUT RF Exposure Evaluation 1) For BT Antenna Gain: 3.8dBi Antenna Gain: The maximum Gain measured in fully anechoic chamber is 2.4 in linear scale. Output Power Into Antenna & RF Exposure Evaluation Distance: Measurement Data GFSK mode Tune up tolerance Maximum tune-up Power Test channel Peak Output Power (dBm) (dBm) (dBm) (mW) Lowest(2402MHz) -3.560 -4±1 -3 0.501 Middle(2441MHz) -1.490 -2±1 -1 0.794 Highest(2480MHz) -0.630 -1±1 0 1.000 π/4DQPSK mode Tune up tolerance Maximum tune-up Power Test channel Peak Output Power (dBm) (dBm) (dBm) (mW) Lowest(2402MHz) -2.660 -3±1 -2 0.631 Middle(2441MHz) 0.550 0±1 1 1.259 Highest(2480MHz) 1.560 1±1 2 1.585 8DPSK mode Tune up tolerance Maximum tune-up Power Test channel Peak Output Power (dBm) (dBm) (mW) (dBm) Lowest(2402MHz) -2.320 -3±1 -2 0.631 Middle(2441MHz) 0.730 0±1 1 1.259 Highest(2480MHz) 1.700 1±1 2 1.585 The worst case: Maximum tune-up Antenna Power Limit Result Power Gain Density (mW) (dBi) at R = 20 cm (mW/cm2) 1.585 3.8 0.0008 1.0 PASS Note: 1) Refer to report No. CQASZ20190900877E-01 for EUT test Max Conducted Peak Output Power value. 2) Pd = (Pout*G)/(4* Pi * R2)=( 1.585*2.4)/(4*3.1416*202)=0.0008 Page:7 of 9

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190900877E-03 2) For WIFI Antenna Gain: 3.8dBi Antenna Gain: The maximum Gain measured in fully anechoic chamber is 2.4 in linear scale. Output Power Into Antenna & RF Exposure Evaluation Distance: Measurement Data IEEE for 802.11b mode Tune up tolerance Maximum tune-up Power Test channel Average Output Power (dBm) (dBm) (dBm) (mW) Lowest(2412MHz) 11.45 10.5±1 11.5 14.125 Middle(2437MHz) 11.86 11±1 12 15.849 Highest(2462MHz) 12.27 11.5±1 12.5 17.783 IEEE for 802.11g mode Tune up tolerance Maximum tune-up Power Test channel Average Output Power (dBm) (dBm) (dBm) (mW) Lowest(2412MHz) 10.98 10±1 11 12.589 Middle(2437MHz) 10.24 9.5±1 10.5 11.220 Highest(2462MHz) 10.48 9.5±1 10.5 11.220 IEEE for 802.11n(HT20) mode Tune up tolerance Maximum tune-up Power Test channel Average Output Power (dBm) (dBm) (dBm) (mW) Lowest(2412MHz) 10.08 9.5±1 10.5 11.220 Middle(2437MHz) 10.26 9.5±1 10.5 11.220 Highest(2462MHz) 10.82 10±1 11 12.589 IEEE for 802.11n(HT40) mode Tune up tolerance Maximum tune-up Power Test channel Average Output Power (dBm) (dBm) (dBm) (mW) Lowest(2422MHz) 10.08 9.5±1 10.5 11.220 Middle(2437MHz) 10.69 10±1 11 12.589 Highest(2452MHz) 10.29 9.5±1 10.5 11.220 Page:8 of 9

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190900877E-03 The worst case: Maximum tune-up Antenna Power Limit Result Power Gain Density (mW) (dBi) at R = 20 cm (mW/cm2) 17.783 3.8 0.0085 1.0 PASS Note: 1) Refer to report No. CQASZ20190900877E-02 for EUT test Max Conducted average Output Power value. 2) Pd = (Pout*G)/(4* Pi * R2)=(17.783*1.0)/(4*3.1416*202)=0.0085 WIFI, BDR and EDR can not simultaneous transmitting at same time. Page:9 of 9


Document Created: 2019-10-01 19:28:03
Document Modified: 2019-10-01 19:28:03
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