BT Test Report
Beijing EROS Technology Co.,Ltd. TU01 2ASNB-TU01 2ASNBTU01 tu01
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Document DEVICE REPORTGetApplicationAttachment.html?id=7632664FCC TEST REPORT Test report On Behalf of Beijing EROS Technology Co.,Ltd For TRUE WIRELESS STEREO BT EARPHONES Model No.: TU01 FCC ID: 2ASNB-TU01 Prepared for : Beijing EROS Technology Co.,Ltd 1-7, 6 / F, Building 1, 76 Zhichun Road, Haidian District, Beijing, China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd. 1st Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: Date of Report: Report Number: 2024/8/15 ~ 2024/8/27 2024/8/28 TZ0002240802FRF01 The test report apply only to the specific sample(s) tested under stated test conditions It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: TZ0002240802-BT TEST RESULT CERTIFICATION Applicant's name .................: Beijing EROS Technology Co.,Ltd Address .................................. : 1-7, 6 / F, Building 1, 76 Zhichun Road, Haidian District, Beijing, China Manufacture's Name ............: Beijing EROS Technology Co.,Ltd Address .................................. : 1-7, 6 / F, Building 1, 76 Zhichun Road, Haidian District, Beijing, China Product description Trade Mark ................................: aigo Product name ............................: TRUE WIRELESS STEREO BT EARPHONES Model and/or type reference .: TU01 Standards .............................: FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing 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. Date of Test ...........................................: Date (s) of performance of tests .............: 2024/8/15 ~ 2024/8/27 Date of Issue ..........................................: 2024/8/28 Test Result..............................................: Pass Testing Engineer : Technical Manager : Authorized Signatory : (Allen Lai) (Hugo Chen) (Andy Zhang) Page 2 of 37 Revision 00 Revision History Issue Date 2024/8/28 Revisions Initial Issue Report No.: TZ0002240802-BT Revised By Andy Zhang Page 3 of 37 Report No.: TZ0002240802-BT TABLE OF CONTENTS 1 GENERAL INFORMATION ................................................................................................ 5 1.1 Description of Device (EUT) ................................................................................................... 5 1.2 Wireless Function Tested in this Report ................................................................................. 5 1.3 EUT configuration................................................................................................................... 6 1.4 Description of Test Facility...................................................................................................... 6 1.5 Statement of the Measurement Uncertainty............................................................................ 6 1.6 Measurement Uncertainty....................................................................................................... 7 1.7 Description of Test Modes ...................................................................................................... 7 1.8 Frequency of Channels........................................................................................................... 7 2 TEST METHODOLOGY ..................................................................................................... 8 2.1 EUT Configuration .................................................................................................................. 8 2.2 EUT Exercise ......................................................................................................................... 8 2.3 Test Sample ........................................................................................................................... 8 3 SYSTEM TEST CONFIGURATION .................................................................................... 9 3.1 Justification............................................................................................................................. 9 3.2 EUT Exercise Software........................................................................................................... 9 3.3 Special Accessories ............................................................................................................... 9 3.4 Block Diagram/Schematics ..................................................................................................... 9 3.5 Equipment Modifications......................................................................................................... 9 3.6 Test Setup .............................................................................................................................. 9 4 SUMMARY OF TEST RESULTS...................................................................................... 10 5 MEASUREMENT RESULTS ............................................................................................ 11 5.1 Maximum Peak Conducted Output Power ............................................................................ 11 5.2 Frequency Separation and 20 dB Bandwidth ........................................................................ 12 5.3 Number of Hopping Frequency............................................................................................. 13 5.4 Time of Occupancy (Dwell Time) .......................................................................................... 14 5.5 Conducted Spurious Emissions and Band Edges Test ......................................................... 16 5.6 Restricted Band Emission Limit ............................................................................................ 17 5.7 AC Power line conducted emissions..................................................................................... 28 5.8 Band-edge measurements for radiated emissions ................................................................ 31 5.9 Pseudorandom frequency hopping sequence....................................................................... 34 5.10 Antenna requirement ............................................................................................................ 35 6 SUMMARY OF TEST EQUIPMENT ................................................................................. 36 7 TEST SETUP PHOTOGRAPHS ....................................................................................... 37 8 EXTERNAL PHOTOS OF THE EUT ................................................................................ 37 9 INTERIOR PHOTOS OF THE EUT................................................................................... 37 Page 4 of 37 1 GENERAL INFORMATION Report No.: TZ0002240802-BT 1.1 Description of Device (EUT) EUT : TRUE WIRELESS STEREO BT EARPHONES Model Number : TU01 Model Declaration : N/A Test Model Power Supply : TU01 : DC 3.7V by battery Hardware version : YMSPT600E-AD6973D4-V01 Software version : V1.0 1.2 Wireless Function Tested in this Report Bluetooth BR/EDR Operation Frequency : 2402 2480 MHz Channel Number : 79 Channels Modulation Technology : GFSK, /4-DQPSK Data Rates : 1/2Mbps Antenna Type And Gain Chip antenna, 3.21dBi Note 1: Antenna position refer to EUT Photos. Note 2: the above information was supplied by the applicant. Page 5 of 37 Report No.: TZ0002240802-BT 1.3 EUT configuration The following peripheral devices and interface cables were connected during the measurement: - supplied by the manufacturer - supplied by the lab Adapter Model: Input: Output: MDY-10-EH Input 100-240V\AC 50/60Hz 0.7A Output 5V 3A 1.4 Description of Test Facility FCC Designation Number: CN1275 Test Firm Registration Number: 167722 Shenzhen Tongzhou Testing Co.,Ltd. has been listed on the US Federal Communications Commission list of test facilities recognized to perform electromagnetic emissions measurements. A2LA Certificate Number: 5463.01 Shenzhen Tongzhou Testing Co.,Ltd. has been listed by American Association for Laboratory Accreditation to perform electromagnetic emission measurement. IC ISED#: 22033 CAB identifier: CN0099 Shenzhen Tongzhou Testing Co.,Ltd. has been listed by Innovation, Science and Economic Development Canada to perform electromagnetic emission measurement. The 3m-Semi anechoic test site fulfils CISPR 16-1-4 according to ANSI C63.4 and CISPR 16-1-4:2010 1.5 Statement of the Measurement Uncertainty The data and results referenced in this document are true and accurate. The reader is cautioned that there may be errors within the calibration limits of the equipment and facilities. The measurement uncertainty was calculated for all measurements listed in this test report acc. To CISPR 16 4 "Specification for radio disturbance and immunity measuring apparatus and methods Part 4: Uncertainty in EMC Measurements" and is documented in the Shenzhen Tongzhou Testing Co.,Ltd. quality system acc. To DIN EN ISO/IEC 17025. Furthermore, component and process variability of devices similar to that tested may result in additional deviation. The manufacturer has the sole responsibility of continued compliance of the device. Page 6 of 37 1.6 Measurement Uncertainty Report No.: TZ0002240802-BT Test Item Radiation Uncertainty : Conduction Uncertainty : Frequency Range 9KHz~30MHz 30MHz~1000MHz 1GHz~40GHz 150kHz~30MHz Uncertainty ±3.08dB ±3.92dB ±4.28dB ±2.71dB Note (1) (1) (1) (1) (1). This uncertainty represents an expanded uncertainty expressed at approximately the 95% confidence level using a coverage factor of k=2. 1.7 Description of Test Modes Bluetooth operates in the unlicensed ISM Band at 2.4GHz. The EUT works in the X-axis, Y-axis, Z-axis. The following operating modes were applied for the related test items. All test modes were tested, only the result of the worst case was recorded in the report. Mode of Operations Bluetooth Frequency Range (MHz) 2402 2441 2480 Data Rate (Mbps) 1/2 1/2 1/2 Worst-case mode and channel used for 9kHz-1000 MHz radiated emissions was the mode and channel with the highest output power, that was determined to be 2Mbps high channel and recorded in this report. Worst-case mode and channel used for 150 kHz-30 MHz power line conducted emissions was the mode and channel with the highest output power, which was determined to be 2Mbps high channel and recorded in this report. 1.8 Frequency of Channels Channel 0 Frequency(MHz) 2402 1 2403 2 2404 --- --- --- --- 38 2440 39 2441 Channel 40 ----76 77 78 Frequency(MHz) 2442 ----2480 2479 2480 Page 7 of 37 2 TEST METHODOLOGY Report No.: TZ0002240802-BT The tests documented in this report were performed in accordance with ANSI C63.10-2013, FCC CFR PART 15C 15.207, 15.209, 15.247 and DA 00-705. 2.1 EUT Configuration The EUT configuration for testing is installed on RF field strength measurement to meet the Commissions requirement and operating in a manner that intends to maximize its emission characteristics in a continuous normal application. 2.2 EUT Exercise The EUT was operated in the normal operating mode for Hopping Numbers and Dwell Time test and a continuous transmits mode for other tests. According to its specifications, the EUT must comply with the requirements of the Section 15.207, 15.209, 15.247 under the FCC Rules Part 15 Subpart C. 2.3 Test Sample Sample ID TZ00022408021# TZ00022408022# Description Engineer sample continuous transmit Normal sample Intermittent transmit Page 8 of 37 3 SYSTEM TEST CONFIGURATION Report No.: TZ0002240802-BT 3.1 Justification The system was configured for testing in a continuous transmits condition. 3.2 EUT Exercise Software The system was configured for testing in a continuous transmits condition and change test channels by engineer mode (FCC_assist_1.0.2.2) provided by application. 3.3 Special Accessories No. Equipment Manufacturer 1 PC ASUS Model No. X454L Serial No. 15105-0038A100 Length shielded/ unshielded / / Notes / 3.4 Block Diagram/Schematics Please refer to the related document. 3.5 Equipment Modifications Shenzhen Tongzhou Testing Co.,Ltd. has not done any modification on the EUT. 3.6 Test Setup Please refer to the test setup photo. Page 9 of 37 4 SUMMARY OF TEST RESULTS Report No.: TZ0002240802-BT FCC Rules §15.247(b)(1) §15.247(a)(1) / §15.247(a)(1)(iii) §15.247(a)(1)(iii) §15.209, §15.247(d) §15.205 §15.207(a) §15.203 Description of Test Maximum Peak Conducted Output Power Frequency Separation And 20 dB Bandwidth Occupied Bandwidth Number Of Hopping Frequency Time Of Occupancy (Dwell Time) Radiated and Conducted Spurious Emissions Emissions at Restricted Band Conducted Emissions Antenna Requirements Test Sample TZ0002240802 1# TZ0002240802 1# TZ0002240802 1# TZ0002240802 1# TZ0002240802 1# TZ0002240802 1# TZ0002240802 2# TZ0002240802 1# TZ0002240802 2# TZ0002240802 1# Result Compliant Compliant Note 1 Compliant Compliant Compliant Compliant Compliant Compliant Note 1: only for report purpose. Remark: The measurement uncertainty is not included in the test result. Page 10 of 37 5 MEASUREMENT RESULTS 5.1 Maximum Peak Conducted Output Power Report No.: TZ0002240802-BT 5.1.1 Limit According to §15.247(b)(1), For frequency hopping systems operating in the 24002483.5 MHz band employing at least 75 non-overlapping hopping channels, and all frequency hopping systems in the 57255850 MHz band: 1 watt. For all other frequency hopping systems in the 24002483.5 MHz band: 0.125 watts. 5.1.2 Block Diagram of Test Setup 5.1.3 Test Procedure The transmitter output is connected to the Spectrum Analyzer. 5.1.4 Test Results Pass Remark: 1. Measured output power at difference Packet Type for each mode and recorded worst case for each mode. 2. Plesase refer to Appendix Test Data for BT(BDR&EDR) for Maximum peak conducted output power test data Page 11 of 37 5.2 Frequency Separation and 20 dB Bandwidth Report No.: TZ0002240802-BT 5.2.1 Limit According to §15.247(a)(1), Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping 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. 5.2.2 Block Diagram of Test Setup 5.2.3 Test Procedure Frequency separation test procedure 1). Place the EUT on the table and set it in transmitting mode. 2). Remove the antenna from the EUT and then connect a low loss RF cable from the antenna port to the Spectrum Analyzer. 3). Set center frequency of Spectrum Analyzer = middle of hopping channel. 4). Set the Spectrum Analyzer as RBW = 300 kHz, VBW = 300 kHz, Span = wide enough to capture the peaks of two adjacent channels, Sweep = auto. 5). Max hold, mark 2 peaks of hopping channel and record the 2 peaks frequency. 20dB bandwidth test procedure 1). Span = approximately 2 to 3 times the 20 dB bandwidth, centered on a hopping channel. 2). RBW 1% of the 20 dB bandwidth, VBW RBW. 3). Detector function = peak. 4). Trace = max hold. 5.2.4 Test Results Pass Remark: 1. Measured output power at difference Packet Type for each mode and recorded worst case for each mode. 2. Plesase refer to Appendix Test Data for BT(BDR&EDR) for 20dB Bandwidth test data 3. Plesase refer to Appendix Test Data for BT(BDR&EDR) for Carrier Frequency Separation test data Page 12 of 37 5.3 Number of Hopping Frequency Report No.: TZ0002240802-BT 5.3.1 Limit According to §15.247(a)(1)(iii) or A8.1 (d), Frequency hopping systems operating in the band 2400-2483.5 MHz shall use at least 15 hopping channels. 5.3.2 Block Diagram of Test Setup 5.3.3 Test Procedure 1). Place the EUT on the table and set it in transmitting mode. 2). Remove the antenna from the EUT and then connect a low loss RF cable from the antenna port to the Spectrum Analyzer. 3). Set Spectrum Analyzer Start=2400MHz, Stop = 2483.5MHz, Sweep = auto. 4). Set the Spectrum Analyzer as RBW, VBW=300kHz. 5). Max hold, view and count how many channel in the band. 5.3.4 Test Results Pass Remark: 1. Measured output power at difference Packet Type for each mode and recorded worst case for each mode. 2. Plesase refer to Appendix Test Data for BT(BDR&EDR) for Hopping Channel Number test data. Page 13 of 37 5.4 Time of Occupancy (Dwell Time) Report No.: TZ0002240802-BT 5.4.1 Limit According to §15.247(a)(1)(iii) or A8.1 (d), Frequency hopping systems operating in the 2400MHz2483.5 MHz bands. The average time of occupancy on any channels shall not greater than 0.4 s within a period 0.4 s multiplied by the number of hopping channels employed. 5.4.2 Block Diagram of Test Setup 5.4.3 Test Procedure 1). Place the EUT on the table and set it in transmitting mode. 2). Remove the antenna from the EUT and then connect a low loss RF cable from the antenna port to the Spectrum Analyzer. 3). Set center frequency of Spectrum Analyzer = operating frequency. 4). Set the Spectrum Analyzer as RBW=510kHz, VBW=3MHz,Span = 0Hz, Sweep = 3.16s. 5). Repeat above procedures until all frequency measured was complete. 5.4.4 Test Results Pass Option 1 The Dwell Time=Burst Width*Total Hops. The detailed calculations are showed as follows: The duration for dwell time calculation: 0.4[s]*hopping number=0.4[s]*79[ch]=31.6[s*ch]; The burst width [ms/hop/ch], which is directly measured, refers to the duration on one channel hop. The hops per second for all channels: The selected EUT Conf uses a slot type of 5-Tx&1-Rx and a hopping rate of 1600 [ch*hop/s] for all channels. So the final hopping rate for all channels is 1600/6=266.67 [ch*hop/s] The hops per second on one channel: 266.67 [ch*hops/s]/79 [ch]=3.38 [hop/s]; The total hops for all channels within the dwell time calculation duration: 3.38 [hop/s]*31.6[s*ch]=106.67 [hop*ch]; The dwell time for all channels hopping: 106.67 [hop*ch]*Burst Width [ms/hop/ch]. Option 2 The Dwell Time=Burst Width*Total Hops. The detailed calculations are showed as follows: The duration for dwell time calculation: 0.4[s]*hopping number=0.4[s]*79[ch]=31.6[s*ch]; The burst width [ms/hop/ch], which is directly measured, refers to the duration on one channel hop. The dwell time for all channels hopping: [hops/3.16s]*10*Burst Width [ms/hop/ch]. Remark: 1. Measured output power at difference Packet Type for each mode and recorded worst case for each mode. Page 14 of 37 Report No.: TZ0002240802-BT 2. Plesase refer to Appendix Test Data for BT(BDR&EDR) for Dwell Time test data Page 15 of 37 Report No.: TZ0002240802-BT 5.5 Conducted Spurious Emissions and Band Edges Test 5.5.1 Limit In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement. Attenuation below the general limits specified in Section 15.209(a) is not required. 5.5.2 Block Diagram of Test Setup 5.5.3 Test Procedure Conducted RF measurements of the transmitter output were made to confirm that the EUT antenna port conducted emissions meet the specified limit and to identify any spurious signals that require further investigation or measurements on the radiated emissions site. The transmitter output is connected to the spectrum analyzer. The resolution bandwidth is set to 100 KHz. The video bandwidth is set to 300 KHz. Measurements are made over the 9 kHz to 26.5GHz range with the transmitter set to the lowest, middle, and highest channels 5.5.4 Test Results Pass Remark: 1. Test results including cable loss; 2. Measured at difference Packet Type for each mode and recorded worst case for each mode. 3. Plesase refer to Appendix Test Data for BT(BDR&EDR) for Band-edge Emissions test data 4. Plesase refer to Appendix Test Data for BT(BDR&EDR) for Conducted Spurious Emissions test data Page 16 of 37 5.6 Restricted Band Emission Limit Report No.: TZ0002240802-BT 5.6.1 Standard Applicable 15.205 (a) Except as shown in paragraph (d) of this section, only spurious emissions are permitted in any of the frequency bands listed below: MHz MHz MHz GHz 0.090-0.110 \1\ 0.495-0.505 2.1735-2.1905 4.125-4.128 4.17725-4.17775 4.20725-4.20775 6.215-6.218 6.26775-6.26825 6.31175-6.31225 8.291-8.294 8.362-8.366 8.37625-8.38675 8.41425-8.41475 12.29-12.293. 12.51975-12.52025 12.57675-12.57725 13.36-13.41 16.42-16.423 16.69475-16.69525 16.80425-16.80475 25.5-25.67 37.5-38.25 73-74.6 74.8-75.2 108-121.94 123-138 149.9-150.05 156.52475-156.52525 156.7-156.9 162.0125-167.17 167.72-173.2 240-285 322-335.4 399.9-410 608-614 960-1240 1300-1427 1435-1626.5 1645.5-1646.5 1660-1710 1718.8-1722.2 2200-2300 2310-2390 2483.5-2500 2690-2900 3260-3267 3332-3339 3345.8-3358 3600-4400 4.5-5.15 5.35-5.46 7.25-7.75 8.025-8.5 9.0-9.2 9.3-9.5 10.6-12.7 13.25-13.4 14.47-14.5 15.35-16.2 17.7-21.4 22.01-23.12 23.6-24.0 31.2-31.8 36.43-36.5 (\2\) \1\ Until February 1, 1999, this restricted band shall be 0.490-0.510 MHz. \2\ Above 38.6 According to §15.247 (d): 20dBc in any 100 kHz bandwidth outside the operating frequency band. In case the emission fall within the restricted band specified on 15.205(a), then the 15.209(a) limit in the table below has to be followed. Frequencies Field Strength Measurement Distance (MHz) (microvolts/meter) (meters) 0.009~0.490 2400/F(KHz) 300 0.490~1.705 24000/F(KHz) 30 1.705~30.0 30 30 30~88 100 3 88~216 150 3 216~960 200 3 Above 960 500 3 Page 17 of 37 5.6.2 Block Diagram of Test Setup Report No.: TZ0002240802-BT Above 10 GHz shall be extrapolated to the specified distance using an extrapolation factor of 20 dB/decade form 3m to 1.5m. Distance extrapolation factor = 20 log (specific distanc [3m] / test distance [1.5m]) (dB); Limit line = specific limits (dBuV) + distance extrapolation factor [6 dB]. Page 18 of 37 5.6.3 Test Procedure 1) Sequence of testing 9 kHz to 30 MHz Report No.: TZ0002240802-BT Setup: --- The equipment was set up to simulate a typical usage like described in the user manual or described by manufacturer. --- If the EUT is a tabletop system, a rotatable table with 0.8 m height is used. --- If the EUT is a floor standing device, it is placed on the ground. --- Auxiliary equipment and cables were positioned to simulate normal operation conditions. --- The AC power port of the EUT (if available) is connected to a power outlet below the turntable. --- The measurement distance is 3 meter. --- The EUT was set into operation. Premeasurement: --- The turntable rotates from 0°to 315°using 45°steps. --- The antenna height is 1.0 meter. --- At each turntable position the analyzer sweeps with peak detection to find the maximum of all emissions Final measurement: --- Identified emissions during the premeasurement the software maximizes by rotating the turntable position (0°to 360°) and by rotating the elevation axes (0°to 360°). --- The final measurement will be done in the position (turntable and elevation) causing the highest emissions with QPK detector. --- The final levels, frequency, measuring time, bandwidth, turntable position, correction factor, margin to the limit and limit will be recorded. Also a plot with the graph of the premeasurement and the limit will be stored. Page 19 of 37 2) Sequence of testing 30 MHz to 1 GHz Report No.: TZ0002240802-BT Setup: --- The equipment was set up to simulate a typical usage like described in the user manual or described by manufacturer. --- If the EUT is a tabletop system, a table with 0.8 m height is used, which is placed on the ground plane. --- If the EUT is a floor standing device, it is placed on the ground plane with insulation between both. --- Auxiliary equipment and cables were positioned to simulate normal operation conditions --- The AC power port of the EUT (if available) is connected to a power outlet below the turntable. --- The measurement distance is 3 meter. --- The EUT was set into operation. Premeasurement: --- The turntable rotates from 0°to 315°using 45°steps. --- The antenna is polarized vertical and horizontal. --- The antenna height changes from 1 to 3 meter. --- At each turntable position, antenna polarization and height the analyzer sweeps three times in peak to find the maximum of all emissions. Final measurement: --- The final measurement will be performed with minimum the six highest peaks. --- According to the maximum antenna and turntable positions of premeasurement the software maximize the peaks by changing turntable position (±45°) and antenna movement between 1 and 4 meter. --- The final measurement will be done with QP detector with an EMI receiver. --- The final levels, frequency, measuring time, bandwidth, antenna height, antenna polarization, turntable angle, correction factor, margin to the limit and limit will be recorded. Also a plot with the graph of the premeasurement with marked maximum final measurements and the limit will be stored. Page 20 of 37 3) Sequence of testing 1 GHz to 18 GHz Report No.: TZ0002240802-BT Setup: --- The equipment was set up to simulate a typical usage like described in the user manual or described by manufacturer. --- If the EUT is a tabletop system, a rotatable table with 1.5 m height is used. --- If the EUT is a floor standing device, it is placed on the ground plane with insulation between both. --- Auxiliary equipment and cables were positioned to simulate normal operation conditions --- The AC power port of the EUT (if available) is connected to a power outlet below the turntable. --- The measurement distance is 3 meter. --- The EUT was set into operation. Premeasurement: --- The turntable rotates from 0°to 315°using 45°steps. --- The antenna is polarized vertical and horizontal. --- The antenna height scan range is 1 meter to 2.5 meter. --- At each turntable position and antenna polarization the analyzer sweeps with peak detection to find the maximum of all emissions. Final measurement: --- The final measurement will be performed with minimum the six highest peaks. --- According to the maximum antenna and turntable positions of premeasurement the software maximize the peaks by changing turntable position (±45°) and antenna movement between 1 and 4 meter. This procedure is repeated for both antenna polarizations. --- The final measurement will be done in the position (turntable, EUT-table and antenna polarization) causing the highest emissions with Peak and Average detector. --- The final levels, frequency, measuring time, bandwidth, turntable position, EUT-table position, antenna polarization, correction factor, margin to the limit and limit will be recorded. Also a plot with the graph of the premeasurement with marked maximum final measurements and the limit will be stored. Page 21 of 37 4) Sequence of testing above 18 GHz Report No.: TZ0002240802-BT Setup: --- The equipment was set up to simulate a typical usage like described in the user manual or described by manufacturer. --- If the EUT is a tabletop system, a rotatable table with 1.5 m height is used. --- If the EUT is a floor standing device, it is placed on the ground plane with insulation between both. --- Auxiliary equipment and cables were positioned to simulate normal operation conditions --- The AC power port of the EUT (if available) is connected to a power outlet below the turntable. --- The measurement distance is 1 meter. --- The EUT was set into operation. Premeasurement: --- The antenna is moved spherical over the EUT in different polarizations of the antenna. Final measurement: --- The final measurement will be performed at the position and antenna orientation for all detected emissions that were found during the premeasurements with Peak and Average detector. --- The final levels, frequency, measuring time, bandwidth, correction factor, margin to the limit and limit will be recorded. Also a plot with the graph of the premeasurement and the limit will be stored. Page 22 of 37 5.6.4 Measuring Instruments and Setting Report No.: TZ0002240802-BT Please refer to section 6 of equipment list in this report. The following table is the setting of spectrum analyzer and receiver. Spectrum Parameter Setting Attenuation Auto Start Frequency 1000 MHz Stop Frequency 10th carrier harmonic RB / VB (Emission in restricted band) 1MHz / 1MHz for Peak, 1 MHz / 1/B kHz for Average RB / VB (Emission in non-restricted band) 1MHz / 1MHz for Peak, 1 MHz / 1/B kHz for Average Receiver Parameter Attenuation Start ~ Stop Frequency Start ~ Stop Frequency Start ~ Stop Frequency Setting Auto 9kHz~150kHz / RB/VB 200Hz/1KHz for QP/AVG 150kHz~30MHz / RB/VB 9kHz/30KHz for QP/AVG 30MHz~1000MHz / RB/VB 120kHz/1MHz for QP 5.6.5 EUT Operation during Test The EUT was programmed to be in continuously transmitting mode. 5.6.6 Test Results Temperature Test Engineer 22.8 Allen Lai Humidity Configurations 5.6.6.1 Results of Radiated Emissions (9 kHz~30MHz) 56% BT Freq. (MHz) - Level (dBuV) - Over Limit (dB) - Over Limit (dBuV) - Remark See Note Note: The amplitude of spurious emissions which are attenuated by more than 20 dB below the permissible value has no need to be reported. Distance extrapolation factor = 40 log (specific distance / test distance) (dB); Limit line = specific limits (dBuV) + distance extrapolation factor. PASS. Only record the worst test result in this report. The test data please refer to following page. Page 23 of 37 5.6.6.2 Results of Radiated Emissions (30MHz ~1GHz) Below 1GHz Vertical Report No.: TZ0002240802-BT ***Note: 1. Level [dBV/m] = Reading [dBV] + Factor [dB/m] 2. Margin [dB] = Limit [dBV/m] - Level [dBV/m] 3.Pre-scan all modes and recorded the worst case results in this report. Page 24 of 37 Horizontal Report No.: TZ0002240802-BT ***Note: 1. Level [dBV/m] = Reading [dBV] + Factor [dB/m] 2. Margin [dB] = Limit [dBV/m] - Level [dBV/m] 3.Pre-scan all modes and recorded the worst case results in this report. Page 25 of 37 5.6.6.3 Results of Radiated Emissions (1GHz ~25GHz) Report No.: TZ0002240802-BT The worst test result for GFSK, Channel 0 / 2402 MHz Freq. Reading Ant. Fac Pre. Cab. Measured MHz dBuv dB/m Fac. Loss dBuv/m dB dB 4804.00 59.62 33.06 35.04 3.94 61.58 4804.00 41.66 33.06 35.04 3.94 43.62 4804.00 57.79 33.06 35.04 3.94 59.75 4804.00 39.60 33.06 35.04 3.94 41.56 Limit dBuv/m 74.00 54.00 74.00 54.00 Margin dB 12.42 10.38 14.25 12.44 Remark Peak Average Peak Average Pol. Horizontal Horizontal Vertical Vertical The worst test result for GFSK, Channel 39 / 2441 MHz Freq. Reading Ant. Fac Pre. Cab. Measured MHz dBuv dB/m Fac. Loss dBuv/m dB dB 4882.00 57.25 33.16 35.15 3.96 59.22 4882.00 43.36 33.16 35.15 3.96 45.33 4882.00 54.06 33.16 35.15 3.96 56.03 4882.00 42.91 33.16 35.15 3.96 44.88 Limit dBuv/m 74.00 54.00 74.00 54.00 Margin dB 14.78 8.67 17.97 9.12 Remark Peak Average Peak Average Pol. Horizontal Horizontal Vertical Vertical The worst test result for GFSK, Channel 78 / 2480 MHz Freq. Reading Ant. Fac Pre. Cab. Measured MHz dBuv dB/m Fac. Loss dBuv/m dB dB 4960.00 54.86 33.26 35.14 3.98 56.96 4960.00 38.91 33.26 35.14 3.98 41.01 4960.00 52.85 33.26 35.14 3.98 54.95 4960.00 40.79 33.26 35.14 3.98 42.89 Limit dBuv/m 74.00 54.00 74.00 54.00 Margin dB 17.04 12.99 19.05 11.11 Remark Peak Average Peak Average Pol. Horizontal Horizontal Vertical Vertical The worst test result for /4-DQPSK, Channel 0 / 2402 MHz Freq. Reading Ant. Fac Pre. Cab. Measured Limit MHz dBuv dB/m Fac. Loss dBuv/m dBuv/m dB dB 4804.00 56.23 33.06 35.04 3.94 58.19 74.00 4804.00 43.27 33.06 35.04 3.94 45.23 54.00 4804.00 54.32 33.06 35.04 3.94 56.28 74.00 4804.00 42.59 33.06 35.04 3.94 44.55 54.00 Margin dB 15.81 8.77 17.72 9.45 Remark Peak Average Peak Average Pol. Horizontal Horizontal Vertical Vertical The worst test result for /4-DQPSK, Channel 39 / 2441 MHz Freq. Reading Ant. Fac Pre. Cab. Measured Limit MHz dBuv dB/m Fac. Loss dBuv/m dBuv/m dB dB 4882.00 58.15 33.16 35.15 3.96 60.12 74.00 4882.00 40.99 33.16 35.15 3.96 42.96 54.00 4882.00 55.61 33.16 35.15 3.96 57.58 74.00 4882.00 40.23 33.16 35.15 3.96 42.20 54.00 Margin dB 13.88 11.04 16.42 11.80 Remark Peak Average Peak Average Pol. Horizontal Horizontal Vertical Vertical Page 26 of 37 Report No.: TZ0002240802-BT The worst test result for /4-DQPSK, Channel 78 / 2480 MHz Freq. Reading Ant. Fac Pre. Cab. Measured Limit MHz dBuv dB/m Fac. Loss dBuv/m dBuv/m dB dB 4960.00 56.85 33.26 35.14 3.98 58.95 74.00 4960.00 42.36 33.26 35.14 3.98 44.46 54.00 4960.00 54.24 33.26 35.14 3.98 56.34 74.00 4960.00 42.99 33.26 35.14 3.98 45.09 54.00 Margin dB 15.05 9.54 17.66 8.91 Remark Peak Average Peak Average Pol. Horizontal Horizontal Vertical Vertical Notes: 1). Measuring frequencies from 9k~10th harmonic (ex. 26GHz), No emission found between lowest internal used/generated frequency to 30 MHz. 2). Radiated emissions measured in frequency range from 9k~10th harmonic (ex. 26GHz) were made with an instrument using Peak detector mode. 3). 18~25GHz at least have 20dB margin. No recording in the test report. 4).Measured = Reading + Ant. Fac - Pre. Fac. + Cab. Loss; Margin = Limit - Measured Page 27 of 37 5.7 AC Power line conducted emissions Report No.: TZ0002240802-BT 5.7.1 Standard Applicable According to §15.207 (a): For an intentional radiator which is designed to be connected to the public utility (AC) power line, the radio frequency voltage that is conducted back onto the AC power line on any frequency or frequencies within the band 150 kHz to 30 MHz shall not exceed 250 microvolts (The limit decreases linearly with the logarithm of the frequency in the range 0.15 MHz to 0.50 MHz). The limits at specific frequency range is listed as follows: Frequency Range (MHz) 0.15 to 0.50 0.50 to 5 5 to 30 Quasi-peak 66 to 56 56 60 * Decreasing linearly with the logarithm of the frequency Limits (dBV) Average 56 to 46 46 50 5.7.2 Block Diagram of Test Setup Vert. reference plane EUT EMI receiver LISN Reference ground plane Note: the distance between LISN and Vertical reference plane is 40 cm and the distance between LISN and EUT is 80 cm. 5.7.3 Test Results Temperature Test Engineer 22.8 Allen Lai Humidity Configurations 56% BT PASS The test data please refer to following page. Page 28 of 37 Neutral Line Report No.: TZ0002240802-BT Note: 1. Margin(dB)= Limit(dBV) - Level(dBV) 2. If QP Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: 9 kHz (150 kHz--30 MHz), Step size: 4 kHz, Scan time: auto. Page 29 of 37 Live Line Report No.: TZ0002240802-BT Note: 1. Margin(dB)= Limit(dBV) - Level(dBV) 2. If QP Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: 9 kHz (150 kHz--30 MHz), Step size: 4 kHz, Scan time: auto. Page 30 of 37 Report No.: TZ0002240802-BT 5.8 Band-edge measurements for radiated emissions 5.8.1 Standard Applicable In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in §15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in §15.209(a) (see §15.205(c)). 5.8.2 Block Diagram of Test Setup For Radiated For Conducted 5.8.3 Test Procedures Radiated Method: 1. The EUT was placed on a turn table which is 0.8m above ground plane. 2. Maximum procedure was performed by raising the receiving antenna from 1m to 4m and rotating the turn table from 0 to 360 to acquire the highest emissions from EUT. 3. And also, each emission was to be maximized by changing the polarization of receiving antenna both horizontal and vertical. 4. Repeat above procedures until all frequency measurements have been completed.. 5. Setting test receiver/spectrum as following table states: Test Frequency range Test Receiver/Spectrum Setting Detector 1GHz-40GHz Peak Value: RBW=1MHz/VBW=3MHz, Sweep time=Auto Peak Page 31 of 37 Conducted Method: Report No.: TZ0002240802-BT Average Value: RBW=1MHz/VBW=3MHz, Sweep time=Auto Average According to KDB 558074 D01 for Antenna-port conducted measurement. Antenna-port conducted measurements may also be used as an alternative to radiated measurements for demonstrating compliance in the restricted frequency bands. If conducted measurements are performed, then proper impedance matching must be ensured and an additional radiated test for cabinet/case spurious emissions is required. 1. Check the calibration of the measuring instrument using either an internal calibrator or a known signal from an external generator. 2. Remove the antenna from the EUT and then connect to a low loss RF cable from the antenna port to an EMI test receiver, then turn on the EUT and make it operate in transmitting mode. Then set it to Low Channel and High Channel within its operating range, and make sure the instrument is operated in its linear range. 3. Set both RBW and VBW of spectrum analyzer to 100 kHz with a convenient frequency span including 100kHz bandwidth from band edge, for Radiated emissions restricted band RBW=1MHz, VBW=3MHz for peak detector and RBW=1MHz, VBW=3MHz for AV detector. 4. Measure the highest amplitude appearing on spectral display and set it as a reference level. Plot the graph with marking the highest point and edge frequency. 5. Repeat above procedures until all measured frequencies were complete. 6. Measure the conducted output power (in dBm) using the detector specified by the appropriate regulatory agency (see 12.2.2, 12.2.3, and 12.2.4 for guidance regarding measurement procedures for determining quasi-peak, peak, and average conducted output power, respectively). 7. Add the maximum transmit antenna gain (in dBi) to the measured output power level to determine the EIRP level (see 12.2.5 for guidance on determining the applicable antenna gain) 8. Add the appropriate maximum ground reflection factor to the EIRP level (6 dB for frequencies 30 MHz, 4.7 dB for frequencies between 30 MHz and 1000 MHz, inclusive and 0 dB for frequencies > 1000 MHz). 9. For devices with multiple antenna-ports, measure the power of each individual chain and sum the EIRP of all chains in linear terms (e.g., Watts, mW). 10. Convert the result ant EIRP level to an equivalent electric field strength using the following relationship: E = EIRP 20log D + 104.77=EIRP+95.23 Where: E = electric field strength in dBV/m, EIRP = equivalent isotropic radiated power in dBm D = specified measurement distance in meters. 11. Since the out-of-band characteristics of the EUT transmit antenna will often be unknown, the use of a conservative antenna gain value is necessary. Thus, when determining the EIRP based on the measured conducted power, the upper bound on antenna gain for a device with a single RF output shall be selected as the maximum in-band gain of the antenna across all operating bands, or 2 dBi, whichever is greater. However, for devices that operate in multiple frequency bands while using the same transmit antenna, the highest gain of the antenna within the operating band nearest in frequency to the restricted band emission being measured may be used in lieu of the overall highest gain when the emission is at a frequency that is within 20 percent of the nearest band edge frequency, but in no case shall a value less than 2 dBi be used. 12. Per KDB662911 D01 section b) In cases where a combination of conducted measurements and cabinet radiated measurements are permitted to demonstrate compliance with absolute radiated out-of-band and spurious limits (e.g., KDB Publications 558074 for DTS and 789033 for U-NII), the conducted measurements must be combined with directional gain to compute the radiated levels of the out-of-band and spurious emissions as described in this section. 13. Compare the resultant electric field strength level to the applicable regulatory limit. 14. Perform radiated spurious emission test duress until all measured frequencies were complete. Page 32 of 37 Report No.: TZ0002240802-BT 5.8.4 Test Results Temperature Test Engineer 23.8 Allen Lai Humidity Configurations 58% BT Item (Mark) 1 1 2 2 3 3 4 4 5 5 6 6 Freq (MHz) 2390.00 2390.00 2390.00 2390.00 2483.50 2483.50 2483.50 2483.50 2483.89 2487.69 2496.94 2498.01 Read Level (dBµV) 52.97 39.80 55.40 37.28 55.11 27.65 51.58 27.18 56.39 36.88 49.89 36.26 Antenna Factor (dB/m) 29.99 29.99 29.99 29.99 30.25 30.25 30.25 30.25 30.25 30.25 30.25 30.25 PRM Factor (dB) 30.21 30.21 30.21 30.21 30.25 30.25 30.25 30.25 30.25 30.25 30.25 30.25 Cable Loss (dB) 8.35 8.35 8.35 8.35 8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 Result Level (dBµV/m) 61.10 47.93 63.53 45.41 63.61 36.15 60.08 35.68 64.89 45.38 58.39 44.76 Limit Line (dBµV/m) 74 54 74 54 74 54 74 54 74 54 74 54 Margin (dB) 12.90 6.07 10.47 8.59 10.39 17.85 13.92 18.32 9.11 8.62 15.61 9.24 Detector Polarization Peak AV[1] Peak AV[1] Peak AV[1] Peak AV[1] Peak AV[1] Peak AV[1] Horizontal Horizontal Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Vertical Vertical Remark: 1. Result Level = Read Level + Antenna Factor + Cable loss - PRM Factor. 2. The other emission levels were very low against the limit. 3. Margin = Limit - Emission Level. 4. The average measurement was not performed when the peak measured data under the limit of average detection. 5. Detector AV is setting spectrum/receiver. RBW=1MHz/VBW=3MHz/Sweep time=Auto/Detector=Average; Page 33 of 37 5.9 Pseudorandom frequency hopping sequence 5.9.1 Standard Applicable For 47 CFR Part 15C sections 15.247 (a) (1) requirement: Report No.: TZ0002240802-BT 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 24002483.5 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. 5.9.2 EUT Pseudorandom Frequency Hopping Sequence Requirement The pseudorandom frequency hopping sequence may be generated in a nice-stage shift register whose 5th 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. Page 34 of 37 5.10 Antenna requirement Report No.: TZ0002240802-BT 5.10.1 Standard Applicable According to antenna requirement of §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. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of this Section. The manufacturer may design the unit so that a broken antenna can be re-placed by the user, but the use of a standard antenna jack or electrical connector is prohibited. This requirement does not apply to carrier current devices or to devices operated under the provisions of Sections 15.211, 15.213, 15.217, 15.219, or 15.221. Further, this requirement does not apply to intentional radiators that must be professionally installed, such as perimeter protection systems and some field disturbance sensors, or to other intentional radiators which, in accordance with Section 15.31(d), must be measured at the installation site. However, the installer shall be responsible for ensuring that the proper antenna is employed so that the limits in this Part are not exceeded. And according to §15.247(4)(1), system operating in the 2400-2483.5MHz bands that are used exclusively for fixed, point-to-point operations may employ transmitting antennas with directional gain greater than 6dBi provided the maximum peak output power of the intentional radiator is reduced by 1 dB for every 3 dB that the directional gain of the antenna exceeds 6dBi. 5.10.2 Antenna Connector Construction The directional gains of antenna used for transmitting is refer to section 1.1 of this report, and the antenna is an internal antenna connect to PCB board and no consideration of replacement. Please see EUT photo for details. 5.10.3 Results Compliance. Page 35 of 37 6 SUMMARY OF TEST EQUIPMENT Item Test Equipment Manufacturer Model No. 1 MXA Signal Analyzer 2 Power Sensor Keysight Agilent N9020A U2021XA 3 Power Meter Agilent U2531A 4 Loop Antenna schwarzbeck FMZB1519B 5 Wideband Antenna schwarzbeck VULB 9163 6 Horn Antenna schwarzbeck BBHA 9120D 7 EMI Test Receiver R&S ESCI 8 Controller MF MF7802 9 Amplifier schwarzbeck BBV 9743 10 Amplifier Tonscend TSAMP-0518 SE 11 RF Cable(below 1GHz) HUBER+SUHNER RG214 12 RF Cable(above 1GHz) HUBER+SUHNER RG214 12 Artificial Mains ROHDE & SCHWARZ ENV 216 14 EMI Test Software ROHDE & SCHWARZ ESK1 15 RE test software Tonscend JS32-RE 16 Test Software Tonscend JS1120-3 17 Horn Antenna A-INFO LB-180400-K F 18 Amplifier Chengyi EMC184045 SE 19 Spectrum Analyzer R&S FSP40 Report No.: TZ0002240802-BT Serial No. MY52091623 MY5365004 TW53323507 00023 958 01989 100849/003 N/A 209 -- N/A N/A 101333-IP V1.71 V5.0.0.0 V3.2.22 J211020657 980508 100550 Calibration Date Calibration Due Date 2024/1/4 2025/1/3 2024/1/4 2024/1/4 2022/11/13 2025/1/3 2025/1/3 2025/11/12 2022/11/13 2022/11/13 2024/1/4 N/A 2024/1/4 2025/11/12 2025/11/12 2025/1/3 N/A 2025/1/3 2024/1/4 2025/1/3 2024/1/4 2024/1/4 2025/1/3 2025/1/3 2024/1/4 2025/1/3 N/A N/A N/A 2022/10/12 N/A N/A N/A 2024/10/11 2023/9/20 2024/1/10 2024/9/19 2025/1/10 Page 36 of 37 7 TEST SETUP PHOTOGRAPHS Report No.: TZ0002240802-BT Please refer to separated files for Test Setup Photos of the EUT. 8 EXTERNAL PHOTOS OF THE EUT Please refer to separated files for External Photos of the EUT. 9 INTERIOR PHOTOS OF THE EUT Please refer to separated files for Internal Photos of the EUT. ----------------THE END OF REPORT--------------- Page 37 of 37
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