200418010SZN-003
kidd.yang
Test Report
MerchSource, LLC. 1012482E Earbuds True Wireless In Ear with Qi Charging 2AEVM1012482E 2AEVM1012482E 1012482e
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Document DEVICE REPORTGetApplicationAttachment.html?id=4732560MERCHSOURCE.LLC TEST REPORT SCOPE OF WORK FCC TESTINGSI TWS REPORT NUMBER 200418010SZN-003 ISSUE DATE [REVISED DATE] 30 April 2020 [---------------------] PAGES 24 DOCUMENT CONTROL NUMBER FCC ID 249_C © 2017 INTERTEK Test Report Intertek Report No.: 200418010SZN-003 MERCHSOURCE.LLC Application For Certification FCC ID: 2AEVM1012482E Earbuds True Wireless In Ear with Qi Charging Model: SI TWS Brand Name: SHARPER IMAGE 2.4GHz Transceiver Report No.: 200418010SZN-003 We hereby certify that the sample of the above item is considered to comply with the requirements of FCC Part 15, Subpart C for Intentional Radiator, mention 47 CFR [10-1-18] Prepared and Checked by: Approved by: Ryan Chen Engineer Kidd Yang Technical Supervisor Date: 30 April 2020 This report is for the exclusive use of Intertek's Client and is provided pursuant to the agreement between Intertek and its Client. Intertek's responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only to the sample tested. This report by itself does not imply that the material, product, or service is or has ever been under an Intertek certification program. Intertek Testing Services Shenzhen Ltd. Longhua Branch 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, ShenZhen, P.R. China Tel: (86 755) 8601 6288 Fax: (86 755) 8601 6751 Version: 01-November-2017 Page: 1 of 24 FCC ID 249_C Test Report Intertek Report No.: 200418010SZN-003 MEASUREMENT/TECHNICAL REPORT This report concerns (check one:) Original Grant X Class II Change Equipment Type: DXX - Part 15 Low Power Communication Device Transmitter Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until: date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37? Yes No X If no, assumed Part 15, Subpart C for intentional radiator - the new 47 CFR [10-1-18 Edition] provision. Report prepared by: Ryan Chen Intertek Testing Services Shenzhen Ltd. Longhua Branch 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, ShenZhen, P.R. China Tel / Fax: 86-755-8614 0743/86-755-8601 6661 Version: 01-November-2017 Page: 2 of 24 FCC ID 249_C Test Report Intertek Report No.: 200418010SZN-003 Table of Contents 1.0 Summary of Test Result................................................................................................. 4 2.0 General Description ...................................................................................................... 5 2.1 Product Description .................................................................................................... 5 2.2 Related Submittal(s) Grants ......................................................................................... 5 2.3 Test Methodology ...................................................................................................... 5 2.4 Test Facility............................................................................................................... 5 3.0 System Test Configuration ............................................................................................. 6 3.1 Justification ............................................................................................................... 6 3.2 EUT Exercising Software .............................................................................................. 6 3.3 Special Accessories ..................................................................................................... 6 3.4 Equipment Modification.............................................................................................. 6 3.5 Measurement Uncertainty .......................................................................................... 7 3.6 Support Equipment List and Description ........................................................................ 7 4.0 Emission Results ........................................................................................................... 8 4.1 Radiated Test Results.................................................................................................. 8 4.1.1 Field Strength Calculation ......................................................................................... 8 4.1.2 Radiated Emission Configuration Photograph .............................................................. 9 4.1.3 Radiated Emissions .................................................................................................. 9 4.1.4 Transmitter Spurious Emissions ............................................................................... 12 5.0 Equipment Photographs .............................................................................................. 16 6.0 Product Labelling ........................................................................................................ 16 7.0 Technical Specifications............................................................................................... 16 8.0 Instruction Manual ..................................................................................................... 16 9.0 Miscellaneous Information .......................................................................................... 17 9.1 Bandedge Plot ......................................................................................................... 17 9.2 20dB Bandwidth....................................................................................................... 20 9.3 Discussion of Pulse Desensitization ............................................................................. 21 9.4 Calculation of Average Factor..................................................................................... 21 9.5 Emissions Test Procedures......................................................................................... 22 10.0 Test Equipment List.................................................................................................. 24 Version: 01-November-2017 Page: 3 of 24 FCC ID 249_C Test Report 1.0 Summary of Test Result Intertek Report No.: 200418010SZN-003 Applicant: MERCHSOURCE.LLC Applicant Address: 7755 Irvine Center Drive, Suite 100, Irvine, CA 92618, USA. Manufacturer: Shenzhen Gotek Acoustic Technology Manufacturer Address: 150 tianwan road, tianliao community, Guangming district, Shenzhen City, Guangdong province MODEL: SI TWS FCC ID: 2AEVM1012482E Test Specification Reference Results Transmitter Radiated Emission 15.249 &15.209 &15.205 Pass Band edge 20dB Bandwidth 15.215(c) Pass Notes: The EUT uses an Integral Antenna which in accordance to Section 15.203 is considered sufficient to comply with the provisions of this section. Version: 01-November-2017 Page: 4 of 24 FCC ID 249_C Test Report 2.0 General Description Intertek Report No.: 200418010SZN-003 2.1 Product Description The equipment under test (EUT) is a Earbuds True Wireless In Ear with Qi Charging with Bluetooth 5.0 function operating in 2402-2480MHz. The EUT is powered by DC 3.7V rechargeable battery or DC 5V through charging box. For more detail information pls. refer to the user manual. Antenna Type: Integral antenna Modulation Type: GFSK, /4-DQPSK and 8-DPSK Antenna Gain: 2.5dBi Max Bluetooth Version: 5.0 (Single Mode EDR) For electronic filing, the brief circuit description is saved with filename: descri.pdf. Both the right and the left ear buds are identical from the electrical circuit design and component layout perspective. They are close to a mirror symmetry replica of each other as far as overall shape. 2.2 Related Submittal(s) Grants This is an application for certification of a transceiver for the Earbuds True Wireless In Ear with Qi Charging which has Bluetooth function, and related report for FCC SDOC is subjected to report number: 200418010SZN-001. 2.3 Test Methodology Radiated emission measurements were performed according to the procedures in ANSI C63.10 (2013). Radiated emission measurement was performed in Semi-anechoic chamber. For radiated emission measurement, preliminary scans were performed in the semi-anechoic chamber only to determine the worst-case modes. All radiated tests were performed at an antenna to EUT distance of 3 meters, unless stated otherwise in the "Justification Section" of this Application. All other measurements were made in accordance with the procedures in part 2 of CFR 47. 2.4 Test Facility The Semi-Anechoic chamber used to collect the radiated data is Intertek Testing Services Shenzhen Ltd. Longhua Branch and located at 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, ShenZhen, P.R. China. This test facility and site measurement data have been fully placed on file with the FCC (Registration Number: CN1188). Version: 01-November-2017 Page: 5 of 24 FCC ID 249_C Test Report 3.0 System Test Configuration Intertek Report No.: 200418010SZN-003 3.1 Justification The system was configured for testing in a typical fashion (as a customer would normally use it), and in the confines as outlined in ANSI C63.10 (2013). The EUT is powered by DC 3.7V rechargeable battery during the test. Both the right and the left ear buds were tested, only the worst- case data was shown in the report. All packets DH1, DH3 & DH5 mode in modulation type GFSK, /4-DQPSK and 8-DPSK were tested and only the worst data was reported in this report. For maximizing emissions below 30 MHz, the EUT was rotated through 360°, the centre of the loop antenna was placed 1 meter above the ground, and the antenna polarization was changed. For maximizing emissions, the EUT was rotated through 360°, the antenna height was varied from 1 meter to 4 meters above the ground plane, and the antenna polarization was changed. This step by step procedure for maximizing emissions led to the data reported in Section 4. The unit was operated standalone and placed at the center of table. The equipment under test (EUT) was configured for testing in a typical fashion (as a customer would normally use it). The EUT was placed on a turn table, which enabled the engineer to maximize emissions through its placement in the three orthogonal axes. 3.2 EUT Exercising Software The EUT exercise program (provided by client) used during testing was designed to exercise the various system components in a manner similar to a typical use. 3.3 Special Accessories No special accessories used. 3.4 Equipment Modification Any modifications installed previous to testing by MERCHSOURCE.LLC will be incorporated in each production model sold / leased in the United States. No modifications were installed by Intertek Testing Services Shenzhen Ltd. Longhua Branch. Version: 01-November-2017 Page: 6 of 24 FCC ID 249_C Test Report 3.5 Measurement Uncertainty Intertek Report No.: 200418010SZN-003 When determining the test conclusion, the Measurement Uncertainty of test has been considered. 3.6 Support Equipment List and Description Description N/A Manufacturer Detail Version: 01-November-2017 Page: 7 of 24 FCC ID 249_C Test Report 4.0 Emission Results Intertek Report No.: 200418010SZN-003 Data is included worst-case configuration (the configuration which resulted in the highest emission levels). 4.1 Radiated Test Results A sample calculation, configuration photographs and data tables of the emissions are included. 4.1.1 Field Strength Calculation The field strength is calculated by adding the reading on the Spectrum Analyzer to the factors associated with preamplifiers (if any), antennas, cables, pulse desensitization and average factors (when specified limit is in average and measurements are made with peak detectors). A sample calculation is included below. FS = RA + AF + CF - AG + PD + AV Where FS = Field Strength in dBµV/m RA = Receiver Amplitude (including preamplifier) in dBµV CF = Cable Attenuation Factor in dB AF = Antenna Factor in dB AG = Amplifier Gain in dB PD = Pulse Desensitization in dB AV = Average Factor in -dB In the radiated emission table which follows, the reading shown on the data table may reflect the preamplifier gain. An example of the calculations, where the reading does not reflect the preamplifier gain, follows: FS = RA + AF + CF - AG + PD + AV Assume a receiver reading of 62.0 dBµV is obtained. The antenna factor of 7.4 dB and cable factor of 1.6 dB is added. The amplifier gain of 29 dB is subtracted. The pulse desensitization factor of the spectrum analyzer was 0 dB, and the resultant average factor was -10 dB. The net field strength for comparison to the appropriate emission limit is 32 dBµV/m. This value in dBµV/m was converted to its corresponding level in µV/m. RA = 62.0 dBµV AF = 7.4 dB CF = 1.6 dB AG = 29.0 dB PD = 0 dB AV = -10 dB FS = 62 + 7.4 + 1.6 - 29 + 0 = 42 dBµV/m Level in µV/m = Common Antilogarithm [(42 dBµV/m)/20] = 125.9 µV/m Version: 01-November-2017 Page: 8 of 24 FCC ID 249_C Test Report 4.1.2 Radiated Emission Configuration Photograph Intertek Report No.: 200418010SZN-003 For electronic filing, the worst case radiated emission configuration photograph is saved with filename: radiated photos. pdf. 4.1.3 Radiated Emissions The data on the following page lists the significant emission frequencies, the limit and the margin of compliance. Numbers with a minus sign are below the limit. Worst Case Radiated Emission at 94.505000 MHz Judgement: Passed by 17.7 dB TEST PERSONNEL: Sign on file Ryan Chen, Project Engineer Typed/Printed Name 27 April 2020 Date Version: 01-November-2017 Page: 9 of 24 FCC ID 249_C Test Report Applicant: MERCHSOURCE.LLC Date of Test: 27 April 2020 Worst Case Operating Mode: ANT Polarity: Horizontal Intertek Report No.: 200418010SZN-003 Model: SI TWS BT Link FCC Part 15 Level in dBV/ 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 30M FCC Part 15 Class B Electric Field Strength QP 50 60 80 100M 200 300 400 500 Frequency in Hz 800 1G Frequency (MHz) 41.640000 74.135000 193.445000 QuasiPeak (dBuV/m) 17.6 16.8 20.0 Meas. Time (ms) 1000.0 1000.0 1000.0 Bandwidth (kHz) 120.000 120.000 120.000 Polarization H H H Corr. (dB) 12.4 8.7 12.9 Margin - QPK (dB) 22.4 23.2 23.5 Limit QPK (dBuV/m) 40.0 40.0 43.5 Remark: 1. Corr. = Antenna Factor (dB/m) + Cable Loss (dB) 2. QuasiPeak (dBV/m)= Corr. (dB/m)+ Read Level (dBV) 3. Margin (dB) = Limit Line(dBV/m) Level (dBV/m) Version: 01-November-2017 Page: 10 of 24 FCC ID 249_C Test Report Applicant: MERCHSOURCE.LLC Date of Test: 27 April 2020 Worst Case Operating Mode: Intertek Report No.: 200418010SZN-003 Model: SI TWS BT Link ANT Polarity: Vertical FCC Part 15 Level in dBV/ 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 30M FCC Part 15 Class B Electric Field Strength QP 50 60 80 100M 200 300 400 500 Frequency in Hz 800 1G Frequency (MHz) 46.005000 94.505000 545.555000 QuasiPeak (dBuV/m) 20.4 25.8 28.0 Meas. Time (ms) 1000.0 1000.0 1000.0 Bandwidth (kHz) 120.000 120.000 120.000 Polarization V V V Corr. (dB) 10.0 10.0 23.3 Margin - QPK (dB) 19.6 17.7 18.0 Limit QPK (dBuV/m) 40.0 43.5 46.0 Remark: 1. Corr. = Antenna Factor (dB/m) + Cable Loss (dB) 2. QuasiPeak (dBV/m)= Corr. (dB/m)+ Read Level (dBV) 3. Margin (dB) = Limit Line(dBV/m) Level (dBV/m) Version: 01-November-2017 Page: 11 of 24 FCC ID 249_C Test Report 4.1.4 Transmitter Spurious Emissions (Radiated) Intertek Report No.: 200418010SZN-003 Worst Case Radiated Emission at 9920.000 MHz For electronic filing, the worst case radiated emission configuration photograph is saved with filename: radiated photos. pdf. The data on the following page lists the significant emission frequencies, the limit and the margin of compliance. Numbers with a minus sign are below the limit. Judgement: Passed by 16.2 dB TEST PERSONNEL: Sign on file Ryan Chen, Project Engineer Typed/Printed Name 27 April 2020 Date Version: 01-November-2017 Page: 12 of 24 FCC ID 249_C Test Report Applicant: MERCHSOURCE.LLC Date of Test: 27 April 2020 Worst Case Operating Mode: Intertek Report No.: 200418010SZN-003 Model: SI TWS Transmitting Table 1 Radiated Emissions Polarization Horizontal Horizontal Horizontal Horizontal Polarization Horizontal Horizontal Horizontal Horizontal Frequency (MHz) 2402.000 4804.000 7206.000 9608.000 Frequency (MHz) 2402.000 4804.000 7206.000 9608.000 Reading (dBµV) 88.5 50.7 54.3 54.2 (2402MHz) Pre- Antenna Amp Factor Gain (dB) (dB) Net at 3m (dBµV/m) 36.7 28.1 79.9 36.7 35.5 49.5 36.1 36.5 54.7 36.3 38.0 55.9 Peak Limit at 3m (dBµV/m) 114.0 74.0 74.0 74.0 Margin (dB) -34.1 -24.5 -19.3 -18.1 Reading (dBµV) 88.5 50.7 54.3 54.2 PreAmp Gain (dB) 36.7 36.7 36.1 36.3 Antenna Factor (dB) 28.1 35.5 36.5 38.0 Average Factor (-dB) 22.5 22.5 22.5 22.5 Net at 3m (dBµV/m) 57.4 27.0 32.2 33.4 Average Limit at 3m (dBµV/m) 94.0 54.0 54.0 54.0 Margin (dB) -36.6 -27.0 -21.8 -20.6 Notes: 1. Peak detector is used for the emission measurement. 2. All measurements were made at 3 meters. Harmonic emissions not detected at the 3-meter distance were measured at 0.3-meter and an inverse proportional extrapolation was performed to compare the signal level to the 3-meter limit. No other harmonic emissions than those reported were detected at a test distance of 0.3-meter. 3. Negative value in the margin column shows emission below limit. 4. Horn antenna is used for the emission over 1000MHz. Test Engineer: Ryan Chen Version: 01-November-2017 Page: 13 of 24 FCC ID 249_C Test Report Applicant: MERCHSOURCE.LLC Date of Test: 27 April 2020 Worst Case Operating Mode: Intertek Report No.: 200418010SZN-003 Model: SI TWS Transmitting Table 2 Radiated Emissions Polarization Horizontal Horizontal Horizontal Horizontal Polarization Horizontal Horizontal Horizontal Horizontal Frequency (MHz) 2441.000 4882.000 7323.000 9764.000 Frequency (MHz) 2441.000 4882.000 7323.000 9764.000 Reading (dBµV) 92.0 50.7 54.7 56.1 (2441MHz) Pre- Antenna Amp Factor Gain (dB) (dB) 36.7 28.1 36.7 35.5 36.1 37.2 36.2 37.0 Net Peak Limit at 3m at 3m (dBµV/m) (dBµV/m) 83.4 114.0 49.5 74.0 55.8 74.0 56.9 74.0 Margin (dB) -30.6 -24.5 -18.2 -17.1 Reading (dBµV) 92.0 50.7 54.7 56.1 PreAmp Gain (dB) 36.7 36.7 36.1 36.2 Antenna Factor (dB) 28.1 35.5 37.2 37.0 Average Factor (-dB) 22.5 22.5 22.5 22.5 Net at 3m (dBµV/m) 60.9 27.0 33.3 34.4 Average Limit at 3m (dBµV/m) 94.0 54.0 54.0 54.0 Margin (dB) -33.1 -27.0 -20.7 -19.6 Notes: 1. Peak detector is used for the emission measurement. 2. All measurements were made at 3 meters. Harmonic emissions not detected at the 3-meter distance were measured at 0.3-meter and an inverse proportional extrapolation was performed to compare the signal level to the 3-meter limit. No other harmonic emissions than those reported were detected at a test distance of 0.3-meter. 3. Negative value in the margin column shows emission below limit. 4. Horn antenna is used for the emission over 1000MHz. Test Engineer: Ryan Chen Version: 01-November-2017 Page: 14 of 24 FCC ID 249_C Test Report Intertek Report No.: 200418010SZN-003 Applicant: MERCHSOURCE.LLC Date of Test: 27 April 2020 Worst Case Operating Mode: Model: SI TWS Transmitting Table 3 Radiated Emissions Polarization Horizontal Horizontal Horizontal Horizontal Polarization Horizontal Horizontal Horizontal Horizontal Frequency (MHz) 2480.000 4960.000 7440.000 9920.000 Frequency (MHz) 2480.000 4960.000 7440.000 9920.000 Reading (dBµV) 92.3 50.3 55.3 55.2 (2480MHz) Pre- Antenna Amp Factor Gain (dB) (dB) 36.7 28.1 36.7 35.5 36.1 37.2 36.3 38.9 Net Peak Limit at 3m at 3m (dBµV/m) (dBµV/m) 83.7 114.0 49.1 74.0 56.4 74.0 57.8 74.0 Margin (dB) -30.3 -24.9 -17.6 -16.2 Reading (dBµV) 92.3 50.3 55.3 55.2 PreAmp Gain (dB) 36.7 36.7 36.1 36.3 Antenna Factor (dB) 28.1 35.5 37.2 38.9 Average Factor (-dB) 22.5 22.5 22.5 22.5 Net at 3m (dBµV/m) 61.2 26.6 33.9 35.3 Average Limit at 3m (dBµV/m) 94.0 54.0 54.0 54.0 Margin (dB) -32.8 -27.4 -20.1 -18.7 Notes: 1. Peak detector is used for the emission measurement. 2. All measurements were made at 3 meters. Harmonic emissions not detected at the 3-meter distance were measured at 0.3-meter and an inverse proportional extrapolation was performed to compare the signal level to the 3-meter limit. No other harmonic emissions than those reported were detected at a test distance of 0.3-meter. 3. Negative value in the margin column shows emission below limit. 4. Horn antenna is used for the emission over 1000MHz. Test Engineer: Ryan Chen Version: 01-November-2017 Page: 15 of 24 FCC ID 249_C Test Report 5.0 Equipment Photographs Intertek Report No.: 200418010SZN-003 For electronic filing, the photographs of the tested EUT are saved with filename: external photos.pdf & internal photos.pdf. 6.0 Product Labelling For electronic filing, the FCC ID label artwork and the label location are saved with filename: label.pdf. 7.0 Technical Specifications For electronic filing, the block diagram and schematics of the tested EUT are saved with filename: block.pdf and circuit.pdf respectively. 8.0 Instruction Manual For electronic filing, a preliminary copy of the Instruction Manual is saved with filename: manual.pdf. This manual will be provided to the end-user with each unit sold/leased in the United States. Version: 01-November-2017 Page: 16 of 24 FCC ID 249_C Test Report Intertek Report No.: 200418010SZN-003 9.0 Miscellaneous Information This miscellaneous information includes details of the measured bandedge, 20dB Bandwidth, the test procedure and calculation of factor such as pulse desensitization. 9.1 Bandedge Plot The test plots are attached as below. From the below plots, the field strength of any emissions outside of the specified frequency band are attenuated to the general radiated emission limits in section 15.209. It fulfils the requirement of 15.249(d). Peak Measurement Bandedge compliance is determined by applying marker-delta method, i.e (Bandedge Plot). (i) Lowest frequency channel (2402MHz): Peak Resultant field strength = Fundamental emissions (peak value) delta from the bandedge plot = 79.9 dBµv/m-47.28 dB = 32.62 dBµv/m Average Resultant field strength = Fundamental emissions (average value) delta from the bandedge plot = 57.4 dBµv/m-47.28 dB = 10.12 dBµv/m (ii) Highest frequency channel (2480MHz): Peak Resultant field strength = Fundamental emissions (peak value) delta from the bandedge plot = 83.7 dBµv/m-46.41 dB = 37.29 dBµv/m Average Resultant field strength = Fundamental emissions (average value) delta from the bandedge plot = 61.2 dBµv/m-46.41 dB = 14.79 dBµv/m The resultant field strength meets the general radiated emission limit in section 15.209, which does not exceed 74dBµv/m (Peak Limit) and 54dBµv/m (Average Limit). Version: 01-November-2017 Page: 17 of 24 FCC ID 249_C Test Report Hopping function off Lowest frequency Channel Intertek Report No.: 200418010SZN-003 Highest frequency Channel Version: 01-November-2017 Page: 18 of 24 FCC ID 249_C Test Report Hopping function on Lowest frequency Channel Intertek Report No.: 200418010SZN-003 Highest frequency Channel Version: 01-November-2017 Page: 19 of 24 FCC ID 249_C Test Report Intertek Report No.: 200418010SZN-003 9.2 20dB bandwidth Pursuant to FCC part 15 Section 15.215(c), the 20dB bandwidth of the emission was contained within the frequency band designated (mentioned as above) which the EUT operated. The effects, if any, from frequency sweeping, frequency hopping, other modulation techniques and frequency stability over excepted variations in temperature and supply voltage were considered. The test plots are reported as below. Version: 01-November-2017 Page: 20 of 24 FCC ID 249_C Test Report 9.3 Discussion of Pulse Desensitization Intertek Report No.: 200418010SZN-003 Pulse desensitivity is not applicable for this device. The effective period (Teff) is approximately 625µs for Bluetooth. With a resolution bandwidth (3dB) of 1MHz, so the pulse desensitivity factor is 0dB. 9.4 Calculation of Average Factor Based on the Bluetooth Specification Version 5.0 (without BLE) and worst case AFH mode, transmitter ON time is independent of packet type (DH1, DH3 and DH5) and packet length, the AFH mode Duty cycle connection factor as below: Channel hop rate = 800 hops/second (AFH Mode) Adjusted channel hop rate for DH5 mode = 133.33 hops/second Time per channel hop = 1 / 133.33 hops/second = 7.5 ms Time to cycle through all channels = 7.5 x 20 channels = 150 ms Number of times transmitter hits on one channel = 100 ms / 150 ms = 1 time(s) Worst case dwell time = 7.5 ms Duty cycle connection factor = 20log10 (7.5ms / 100ms) = -22.5 dB Version: 01-November-2017 Page: 21 of 24 FCC ID 249_C Test Report 9.5 Emissions Test Procedures Intertek Report No.: 200418010SZN-003 The following is a description of the test procedure used by Intertek Testing Services in the measurements of transmitters operating under Part 15, Subpart C rules. The test set-up and procedures described below are designed to meet the requirements of ANSI C63.10 - 2013. The transmitting equipment under test (EUT) is placed on a styrene turntable which is four feet in diameter and approximately 0.8 meter up to 1GHz and 1.5 meter above 1GHz in height above the ground plane. During the radiated emissions test, the turntable is rotated and any cables leaving the EUT are manipulated to find the configuration resulting in maximum emissions. The EUT is adjust through all three orthogonal axes to obtain maximum emission levels. The antenna height and polarization are varied during the testing to search for maximum signal levels. Detector function for radiated emissions is in peak mode. Average readings, when required, are taken by measuring the duty cycle of the equipment under test and subtracting the corresponding amount in dB from the measured peak readings. A detailed description for the calculation of the average factor can be found in section 9.4. The frequency range scanned is from the lowest radio frequency signal generated in the device which is greater than 9 kHz to the tenth harmonic of the highest fundamental frequency or 40 GHz, whichever is lower. Version: 01-November-2017 Page: 22 of 24 FCC ID 249_C Test Report 9.5 Emissions Test Procedures (cont'd) Intertek Report No.: 200418010SZN-003 The EUT is warmed up for 15 minutes prior to the test. AC power to the unit is varied from 85% to 115% nominal and variation in the fundamental emission field strength is recorded. If battery powered, a new, fully charged battery is used. The IF bandwidth used for measurement of radiated signal strength was 10 kHz for emission below 30 MHz and 120 kHz for emission from 30 MHz to 1000 MHz. Where pulsed transmissions of short enough pulse duration warrant, a greater bandwidth is selected according to the recommendations of Hewlett Packard Application Note 150-2. Above 1000 MHz, a resolution bandwidth of 1 MHz is used (RBW 3MHz used for fundamental emission). Transmitter measurements are normally conducted at a measurement distance of three meters. However, to assure low enough noise floor in the restricted bands and above 1 GHz, signals are acquired at a distance of one meter or less. All measurements are extrapolated to three meters using inverse scaling, but those measurements taken at a closer distance are so marked. Version: 01-November-2017 Page: 23 of 24 FCC ID 249_C Test Report 10.0 Test Equipment List Intertek Report No.: 200418010SZN-003 Equipment No. SZ061-12 SZ061-06 SZ061-08 SZ061-07 SZ056-03 SZ185-01 SZ181-04 SZ188-01 SZ062-02 SZ062-05 SZ062-12 SZ067-04 Equipment Biconilog Antenna Active Loop Antenna Horn Antenna Pyramidal Horn Antenna Spectrum Analyzer EMI Receiver Preamplifier Anechoic Chamber RF Cable RF Cable RF Cable Notch Filter Manufacturer ETS Electro-Metrics ETS ETS R&S R & S Agilent ETS RADIALL RADIALL RADIALL Micro-Tronics Model No. 3142E EM-6876 Serial No. 00166158 Cal. Date 26-Feb2019 Due Date 26-Aug-2020 217 24-May-2019 24-May-2020 3115 00092346 07-Sep-2019 07-Sep-2020 3160-09 00083067 13-Aug-2019 13-Aug-2020 FSP30 101148 28-May-2019 28-May-2020 ESCI 8449B RFD-F/A100 RG 213U 0.0426.5GHz 0.0426.5GHz BRM5070 2-02 100547 3008A024 74 4102 24-Dec-2019 05-Jul-2019 15-Dec-2018 -- 16-Dec-2019 -- 26-Feb-2019 -- 26-Feb-2019 -- 28-May-2019 24-Dec-2020 05-Jul-2020 15-Dec-2020 16-Jun-2020 26-Aug-2020 26-Aug-2020 28-May-2020 ************************************* End of Report************************************ Version: 01-November-2017 Page: 24 of 24 FCC ID 249_C
Related FCC IDs:
- 2AEVM1012482E - MerchSource, LLC. Earbuds True Wireless In Ear with Qi Charging [1012482E] PDFCreator 2.5.2.5233