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User manual | Users Manual | 4.68 MiB | August 20 2019 / February 16 2020 | delayed release | ||
1 | Cover Letter(s) | August 20 2019 / August 28 2019 | ||||||
1 | Block Diagram | Block Diagram | August 20 2019 | confidential | ||||
1 | Cover Letter(s) | August 20 2019 / August 28 2019 | ||||||
1 | Cover Letter(s) | August 20 2019 / August 28 2019 | ||||||
1 | External Photos | External Photos | August 20 2019 / February 16 2020 | delayed release | ||||
1 | Internal Phtos | Internal Photos | August 20 2019 / February 16 2020 | delayed release | ||||
1 | ID Label/Location Info | August 20 2019 / August 28 2019 | ||||||
1 | Operational Description | Operational Description | August 20 2019 | confidential | ||||
1 | RF Exposure Info | August 20 2019 / August 28 2019 | ||||||
1 | Schenatics | Schematics | August 20 2019 | confidential | ||||
1 | Setup Photos | Test Setup Photos | August 20 2019 / February 16 2020 | delayed release | ||||
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Test Report | Test Report | 3.79 MiB | August 20 2019 / August 28 2019 |
1 | Test Report | Test Report | 3.79 MiB | August 20 2019 / August 28 2019 |
Report No.: ATE20191011 Page 1 of 92 Prepared for Address Prepared by Address APPLICATION CERTIFICATION FCC Part 15C On Behalf of THUMBS UK(UK)LTD TRUE WIRELESS EARBUDS Model No.: TWSEBBLKPRM FCC ID: 2AHHETWSEBPRM
: THUMBS UK(UK)LTD
: Unit L, Braintree Industrial Estate, Braintree Road HA4 0EJ, Ruislip, London, United Kingdom
: Shenzhen Accurate Technology Co., Ltd.
:
1/F., Building A, Changyuan New Material Port, Science &
Industry Park, Nanshan District, Shenzhen, Guangdong, P.R. China. Tel: (0755) 26503290 Fax: (0755) 26503396 Report No. Date of Test Date of Report
: ATE20191011
:
:
July 15-July 19, 2019 July 29, 2019 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 2 of 92 TABLE OF CONTENTS 3.1. 3.2. Page 5.1. 5.2. 5.3. 5.4. 5.5. 5.6. Description Test Report Certification 1. GENERAL INFORMATION.......................................................................................................... 5 Description of Device (EUT) ...................................................................................................................5 1.1. Accessory and Auxiliary Equipment........................................................................................................5 1.2. 1.3. Description of Test Facility ......................................................................................................................6 1.4. Measurement Uncertainty.........................................................................................................................6 2. MEASURING DEVICE AND TEST EQUIPMENT..................................................................... 7 3. OPERATION OF EUT DURING TESTING................................................................................. 8 Operating Mode........................................................................................................................................8 Configuration and peripherals ..................................................................................................................8 4. TEST PROCEDURES AND RESULTS......................................................................................... 9 20DB BANDWIDTH TEST ........................................................................................................... 10 5. Block Diagram of Test Setup .................................................................................................................10 The Requirement For Section 15.247(a)(1)............................................................................................10 EUT Configuration on Measurement .....................................................................................................10 Operating Condition of EUT ..................................................................................................................10 Test Procedure........................................................................................................................................10 Test Result..............................................................................................................................................11 6. CARRIER FREQUENCY SEPARATION TEST ....................................................................... 15 Block Diagram of Test Setup .................................................................................................................15 The Requirement For Section 15.247(a)(1)............................................................................................15 EUT Configuration on Measurement .....................................................................................................15 Operating Condition of EUT ..................................................................................................................15 Test Procedure........................................................................................................................................16 Test Result..............................................................................................................................................16 7. NUMBER OF HOPPING FREQUENCY TEST......................................................................... 20 Block Diagram of Test Setup .................................................................................................................20 The Requirement For Section 15.247(a)(1)(iii)......................................................................................20 EUT Configuration on Measurement .....................................................................................................20 Operating Condition of EUT ..................................................................................................................20 Test Procedure........................................................................................................................................20 Test Result..............................................................................................................................................21 8. DWELL TIME TEST..................................................................................................................... 22 Block Diagram of Test Setup .................................................................................................................22 The Requirement For Section 15.247(a)(1)(iii)......................................................................................22 EUT Configuration on Measurement .....................................................................................................22 Operating Condition of EUT ..................................................................................................................22 Test Procedure........................................................................................................................................22 Test Result..............................................................................................................................................23 9. MAXIMUM PEAK OUTPUT POWER TEST............................................................................ 33 Block Diagram of Test Setup .................................................................................................................33 The Requirement For Section 15.247(b)(1) ...........................................................................................33 EUT Configuration on Measurement .....................................................................................................33 Operating Condition of EUT ..................................................................................................................33 Test Procedure........................................................................................................................................33 Test Result..............................................................................................................................................34 8.1. 8.2. 8.3. 8.4. 8.5. 8.6. 6.1. 6.2. 6.3. 6.4. 6.5. 6.6. 9.1. 9.2. 9.3. 9.4. 9.5. 9.6. 7.1. 7.2. 7.3. 7.4. 7.5. 7.6. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 3 of 92 10. RADIATED EMISSION TEST..................................................................................................... 38 10.1. Block Diagram of Test Setup .................................................................................................................38 10.2. The Requirement For Section 15.247(d) ................................................................................................39 10.3. Transmitter Emission Limit....................................................................................................................40 10.4. Restricted bands of operation .................................................................................................................41 10.5. Configuration of EUT on Measurement.................................................................................................41 10.6. Test Procedure........................................................................................................................................42 10.7. Data Sample............................................................................................................................................43 10.8. Test Result..............................................................................................................................................43 11. BAND EDGE COMPLIANCE TEST........................................................................................... 71 11.1. Block Diagram of Test Setup .................................................................................................................71 11.2. The Requirement For Section 15.247(d) ................................................................................................71 11.3. EUT Configuration on Measurement .....................................................................................................71 11.4. Operating Condition of EUT ..................................................................................................................71 11.5. Test Procedure........................................................................................................................................72 11.6. Test Result..............................................................................................................................................72 12. AC POWER LINE CONDUCTED EMISSION TEST............................................................... 82 12.1. Block Diagram of Test Setup .................................................................................................................82 12.2. Test System Setup ..................................................................................................................................82 12.3. Test Limits..............................................................................................................................................83 12.4. Configuration of EUT on Measurement.................................................................................................83 12.5. Operating Condition of EUT ..................................................................................................................83 12.6. Test Procedure........................................................................................................................................83 12.7. Data Sample............................................................................................................................................84 12.8. Test Result..............................................................................................................................................84 13. CONDUCTED SPURIOUS EMISSION COMPLIANCE TEST............................................... 87 13.1. Block Diagram of Test Setup .................................................................................................................87 13.2. The Requirement For Section 15.247(d) ................................................................................................87 13.3. EUT Configuration on Measurement .....................................................................................................87 13.4. Operating Condition of EUT ..................................................................................................................87 13.5. Test Procedure........................................................................................................................................88 13.6. Test Result..............................................................................................................................................88 14. ANTENNA REQUIREMENT ....................................................................................................... 92 14.1. The Requirement ....................................................................................................................................92 14.2. Antenna Construction.............................................................................................................................92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 4 of 92 Test Report Certification Applicant Address
: THUMBS UK(UK)LTD
: Unit L, Braintree Industrial Estate, Braintree Road HA4 0EJ, Ruislip, London, United Kingdom Product
: TRUE WIRELESS EARBUDS
: TWSEBBLKPRM Model No. Measurement Procedure Used:
FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 The device described above is tested by Shenzhen Accurate Technology Co., Ltd. to determine the maximum emission levels emanating from the device. The maximum emission levels are compared to the FCC Part 15 Subpart C Section 15.247 limits. The measurement results are contained in this test report and Shenzhen Accurate Technology Co., Ltd. is assumed full responsibility for the accuracy and completeness of these measurements. Also, this report shows that the Equipment Under Test (EUT) is to be technically compliant with the FCC requirements. This report applies to above tested sample only. This report shall not be reproduced in part without written approval of Shenzhen Accurate Technology Co., Ltd. Date of Test :
Date of Report :
Prepared by :
Approved &
Authorized Signer :
July 15-July 19, 2019 July 29, 2019
(Star Yang, Engineer)
(Sean Liu, Manager) FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 5 of 92 1. GENERAL INFORMATION 1.1. Description of Device (EUT) Product Model Number Bluetooth version Frequency Range Channel Spacing Number of Channels Antenna Gain(Max) Antenna type Modulation mode Rating
: TRUE WIRELESS EARBUDS
: TWSEBBLKPRM
: V5.0
:
:
:
:
:
2402-2480MHz 1MHz 79 1.9dBi Integral Antenna
: GFSK, /4 DQPSK
: DC 3.7V 1.2. Accessory and Auxiliary Equipment Notebook PC:
Manufacturer: Lenovo M/N: ThinkPad X240 S/N: n.a FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 6 of 92 1.3. Description of Test Facility EMC Lab Name of Firm Site Location
: Recognition of accreditation by Federal Communications Commission (FCC) The Designation Number is CN1189 The Registration Number is 708358 Listed by Innovation, Science and Economic Development Canada (ISEDC) The Registration Number is 5077A-2 Accredited by China National Accreditation Service for Conformity Assessment (CNAS) The Registration Number is CNAS L3193 Accredited by American Association for Laboratory Accreditation (A2LA) The Certificate Number is 4297.01
: Shenzhen Accurate Technology Co., Ltd.
: 1/F., Building A, Changyuan New Material Port, Science
& Industry Park, Nanshan District, Shenzhen, Guangdong, P.R. China 1.4. Measurement Uncertainty Radiated Emission Expanded Uncertainty
(9kHz-30MHz) Radiated Emission Expanded Uncertainty
(30MHz-1000MHz) Radiated Emission Expanded Uncertainty
(1G-18GHz) Radiated Emission Expanded Uncertainty
(18G-26.5GHz) Conduction Emission Expanded Uncertainty
(Mains ports, 9kHz-30MHz)
: U=2.66dB, k=2
: U=4.28dB, k=2
: U=4.98dB, k=2
: U=5.06dB, k=2
: U=2.72dB, k=2 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Kind of equipment EMI Test Receiver EMI Test Receiver Spectrum Analyzer Pre-Amplifier
(Radiated Emission) Pre-Amplifier
(Radiated Emission) Loop Antenna Bilog Antenna Horn Antenna Horn Antenna LISN Highpass Filter Band Reject Filter Report No.: ATE20191011 Page 7 of 92 2. MEASURING DEVICE AND TEST EQUIPMENT Table 1: List of Test and Measurement Equipment Type Manufacturer Rohde&Schwarz ESCS30 Rohde&Schwarz ESR Rohde&Schwarz Compliance Direction Agilent FSV-40 RSU-M2 8447D S/N 100307 101817 101495 38322 Calibrated dates Cal. Interval Jan. 05, 2019 One Year One Year Jan. 05, 2019 One Year Jan. 05, 2019 Jan. 05, 2019 One Year 294A10619 Jan. 05, 2019 One Year Schwarzbeck Schwarzbeck Schwarzbeck Schwarzbeck Schwarzbeck Wainwright Instruments Wainwright Instruments 1516131 FMZB1516 VULB9163 9163-323 BBHA9120D 9120D-655 9170-359 BBHA9170 NSLK8126 8126431 N/A WHKX3.6/18 G-10SS WRCG2400/2 485-2375/2510
-60/11SS N-2m No.2 N/A SUHNER SUHNER RESENBERGER N-12m RESENBERGER N-0.5m RF Coaxial Cable
(Conducted Emission) RF Coaxial Cable
(Radiated Emission) RF Coaxial Cable
(Radiated Emission) RF Coaxial Cable
(Radiated Emission) RF Coaxial Cable
(Radiated Emission) RF Coaxial Cable
(Radiated Emission) RF Coaxial Cable
(Radiated Emission) Conducted Emission Measurement Software: ES-K1 V1.71 Radiated Emission Measurement Software: EZ_EMC V1.1.4.2 RESENBERGER N-6m SUHNER SUHNER N-0.5m N-2m N-2m No.11 No.12 No.13 No.15 No.16 No.17 Jan. 05, 2019 Jan. 05, 2019 Jan. 05, 2019 Jan. 05, 2019 Jan. 05, 2019 Jan. 05, 2019 One Year One Year One Year One Year One Year One Year Jan. 05, 2019 One Year Jan. 05, 2019 One Year Jan. 05, 2019 One Year Jan. 05, 2019 One Year Jan. 05, 2019 One Year Jan. 05, 2019 One Year Jan. 05, 2019 One Year Jan. 05, 2019 One Year FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 8 of 92 3. OPERATION OF EUT DURING TESTING 3.1. Operating Mode The mode is used: Transmitting mode Low Channel: 2402MHz Middle Channel: 2441MHz High Channel: 2480MHz Hopping
(Note: The PCB Layout and schematic are identical for left and right earbuds and all tests were applied on left earbud in this test report) 3.2. Configuration and peripherals EUT Figure 1 Setup: Transmitting mode FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 9 of 92 4. TEST PROCEDURES AND RESULTS FCC Rules Description of Test Section 15.247(a)(1) 20dB Bandwidth Test Result Compliant Section 15.247(a)(1) Carrier Frequency Separation Test Compliant Section 15.247(a)(1)(iii) Number Of Hopping Frequency Test Compliant Section 15.247(a)(1)(iii) Dwell Time Test Compliant Section 15.247(b)(1) Maximum Peak Output Power Test Compliant Section 15.247(d) Radiated Emission Test Compliant Section 15.209 Section 15.247(d) Band Edge Compliance Test Compliant Section 15.207 AC Power Line Conducted Emission Test Compliant Section 15.247(d) Conducted Spurious Emission Test Compliant Section 15.203 Antenna Requirement Compliant FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 10 of 92 5. 20DB BANDWIDTH TEST 5.1. Block Diagram of Test Setup EUT Low Loss Cable Spectrum Analyzer 5.2. The Requirement For Section 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. 5.3. EUT Configuration on Measurement The equipment are installed on the emission measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 5.4. Operating Condition of EUT 5.4.1.Setup the EUT and simulator as shown as Section 5.1. 5.4.2.Turn on the power of all equipment. 5.4.3.Let the EUT work in TX (Hopping off) modes measure it. The transmit frequency are 2402-2480MHz. We select 2402MHz, 2441MHz, and 2480MHz TX frequency to transmit. 5.5. Test Procedure 5.5.1.Remove the antenna from the EUT and then connect a low loss RF cable from the antenna port to the spectrum analyzer. 5.5.2.The spectrum analyzer center frequency is set to the nominal EUT channel center frequency. The span range for the EMI receiver or spectrum analyzer shall be between two times and five times the OBW. 5.5.3.RBW shall be in the range of 1% to 5% of the OBW and VBW shall be approximately three times RBW. 5.5.4.The 20dB bandwidth is defined as the total spectrum the power of which is higher than peak power minus 20dB. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 11 of 92 5.6. Test Result Channel Low Middle High Frequency
(MHz) 2402 2441 2480 GFSK mode 20dB Bandwidth
(MHz) 0.773 0.782 0.773
/4 DQPSK mode 20dB Bandwidth
(MHz) 1.246 1.242 1.246 Result Pass Pass Pass The spectrum analyzer plots are attached as below. GFSK Mode Low channel Date: 19.JUL.2019 15:07:58 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 12 of 92 Middle channel Date: 19.JUL.2019 15:05:52 High channel Date: 19.JUL.2019 15:04:05 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 13 of 92
/4 DQPSK Mode Low channel Date: 19.JUL.2019 14:59:50 Middle channel Date: 19.JUL.2019 15:01:15 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 14 of 92 High channel Date: 19.JUL.2019 15:02:47 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 15 of 92 6. CARRIER FREQUENCY SEPARATION TEST 6.1. Block Diagram of Test Setup Low Loss Cable EUT Spectrum Analyzer 6.2. The Requirement For Section 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. 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 hopping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals. 6.3. EUT Configuration on Measurement The equipment are installed on the emission measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 6.4. Operating Condition of EUT 6.4.1.Setup the EUT and simulator as shown as Section 6.1. 6.4.2.Turn on the power of all equipment. 6.4.3.Let the EUT work in TX (Hopping on) modes measure it. The transmit frequency are 2402-2480MHz. We select 2402MHz, 2441MHz, and 2480MHz TX frequency to transmit. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 16 of 92 6.5. Test Procedure 6.5.1.The transmitter output was connected to the spectrum analyzer through a low loss cable. 6.5.2.Set RBW of spectrum analyzer to 100 kHz and VBW to 300 kHz. Adjust Span to 3MHz. 6.5.3.Set the adjacent channel of the EUT Maxhold another trace. 6.5.4.Measurement the channel separation 6.6. Test Result GFSK mode Channel Low Middle High Frequency
(MHz) 2402 2403 2440 2441 2479 2480
/4 DQPSK Mode Channel Frequency Low Middle High
(MHz) 2402 2403 2440 2441 2479 2480 Channel Separation(MHz) 1.0029 1.0029 1.0029 Channel Separation(MHz) 1.0029 1.0029 1.0029 Limit
(MHz) 25KHz or 2/3*20dB bandwidth 25KHz or 2/3*20dB bandwidth 25KHz or 2/3*20dB bandwidth Limit
(MHz) 25KHz or 2/3*20dB bandwidth 25KHz or 2/3*20dB bandwidth 25KHz or 2/3*20dB bandwidth Result Pass Pass Pass Result Pass Pass Pass The spectrum analyzer plots are attached as below. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 17 of 92 GFSK Mode Low channel Date: 18.JUL.2019 16:32:01 Middle channel Date: 18.JUL.2019 16:32:59 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 18 of 92 High channel Date: 18.JUL.2019 16:34:33
/4 DQPSK Mode Low channel Date: 18.JUL.2019 16:38:35 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 19 of 92 Middle channel Date: 18.JUL.2019 16:37:17 High channel Date: 18.JUL.2019 16:35:48 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 20 of 92 7. NUMBER OF HOPPING FREQUENCY TEST 7.1. Block Diagram of Test Setup Low Loss Cable EUT Spectrum Analyzer 7.2. The Requirement For Section 15.247(a)(1)(iii) Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 7.3. EUT Configuration on Measurement The equipment are installed on the emission measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 7.4. Operating Condition of EUT 7.4.1.Setup the EUT and simulator as shown as Section 7.1. 7.4.2.Turn on the power of all equipment. 7.4.3.Let the EUT work in TX (Hopping on) modes measure it. 7.5. Test Procedure 7.5.1.The transmitter output was connected to the spectrum analyzer through a low loss cable. 7.5.2.Set the spectrum analyzer as Span=90MHz, RBW=100 kHz, VBW=300 kHz. 7.5.3.Max hold, view and count how many channel in the band. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 21 of 92 7.6. Test Result Total number of hopping channel Measurement result(CH) Limit(CH) 79 15 Result Pass The spectrum analyzer plots are attached as below. Number of hopping channels (GFSK Mode) Date: 18.JUL.2019 16:30:22 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 22 of 92 8. DWELL TIME TEST 8.1. Block Diagram of Test Setup EUT Low Loss Cable Spectrum Analyzer 8.2. The Requirement For Section 15.247(a)(1)(iii) Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used. 8.3. EUT Configuration on Measurement The equipment are installed on the emission measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 8.4. Operating Condition of EUT 8.4.1.Setup the EUT and simulator as shown as Section 8.1. 8.4.2.Turn on the power of all equipment. 8.4.3.Let the EUT work in TX (Hopping on) modes measure it. The transmit frequency are 2402-2480MHz. We select 2402MHz, 2441MHz, and 2480MHz TX frequency to transmit. 8.5. Test Procedure 8.5.1.The transmitter output was connected to the spectrum analyzer through a low loss cable. 8.5.2.Set center frequency of spectrum analyzer = operating frequency. 8.5.3.Set the spectrum analyzer as RBW=1MHz, VBW=3MHz, Span=0Hz, Adjust Sweep=5ms, 10ms, 15ms. Get the pulse time. 8.5.4.Repeat above procedures until all frequency measured were complete. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 23 of 92 8.6. Test Result GFSK Mode Mode DH1 Pulse Time Dwell Time Channel Frequency
(ms) 0.428 0.420 0.428
(MHz) 2402 2441 2480
(ms) 136.96 134.40 136.96 Limit
(ms) 400 400 400 A period transmit time = 0.4 79 = 31.6 Dwell time = pulse time (1600/(2*79))31.6 400 400 400 A period transmit time = 0.4 79 = 31.6 Dwell time = pulse time (1600/(4*79))31.6 400 400 400 315.41 315.41 315.41 271.36 271.36 271.36 2.957 2.957 2.957 1.696 1.696 1.696 2402 2441 2480 2402 2441 2480 DH3 DH5 A period transmit time = 0.4 79 = 31.6 Dwell time = pulse time (1600/(6*79))31.6
/4 DQPSK Mode 2DH1 Mode Pulse Time Dwell Time Channel Frequency
(ms) 0.435 0.449 0.435
(MHz) 2402 2441 2480
(ms) 139.20 143.68 139.20 Limit
(ms) 400 400 400 A period transmit time = 0.4 79 = 31.6 Dwell time = pulse time (1600/(2*79))31.6 400 400 400 A period transmit time = 0.4 79 = 31.6 Dwell time = pulse time (1600/(4*79))31.6 400 400 400 317.65 317.65 320.00 273.60 273.60 271.36 2.978 2.978 3.000 1.710 1.710 1.696 2402 2441 2480 2402 2441 2480 2DH5 2DH3 A period transmit time = 0.4 79 = 31.6 Dwell time = pulse time (1600/(6*79))31.6 The spectrum analyzer plots are attached as below. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 24 of 92 GFSK Mode DH1 Low channel Date: 18.JUL.2019 16:57:08 DH1 Middle channel Date: 18.JUL.2019 16:57:50 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 25 of 92 DH1 High channel Date: 18.JUL.2019 16:58:40 DH3 Low channel Date: 18.JUL.2019 17:01:03 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 26 of 92 DH3 Middle channel Date: 18.JUL.2019 17:00:21 DH3 High channel Date: 18.JUL.2019 16:59:38 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 27 of 92 DH5 Low channel Date: 18.JUL.2019 17:01:59 DH5 Middle channel Date: 18.JUL.2019 17:02:48 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 28 of 92 DH5 High channel Date: 18.JUL.2019 17:03:38
/4 DQPSK Mode 2DH1 Low channel Date: 18.JUL.2019 17:11:43 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 29 of 92 2DH1 Middle channel Date: 18.JUL.2019 17:10:56 2DH1 High channel Date: 18.JUL.2019 17:10:14 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 30 of 92 2DH3 Low channel Date: 18.JUL.2019 17:07:31 2DH3 Middle channel Date: 18.JUL.2019 17:08:32 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 31 of 92 2DH3 High channel Date: 18.JUL.2019 17:09:17 2DH5 Low channel Date: 18.JUL.2019 17:06:48 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 32 of 92 2DH5 Middle channel Date: 18.JUL.2019 17:05:52 2DH5 High channel Date: 18.JUL.2019 17:04:54 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 33 of 92 9. MAXIMUM PEAK OUTPUT POWER TEST 9.1. Block Diagram of Test Setup EUT Low Loss Cable Spectrum Analyzer 9.2. The Requirement For Section 15.247(b)(1) 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. 9.3. EUT Configuration on Measurement The equipment are installed on the emission Measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 9.4. Operating Condition of EUT 9.4.1.Setup the EUT and simulator as shown as Section 9.1. 9.4.2.Turn on the power of all equipment. 9.4.3.Let the EUT work in TX (Hopping off) modes measure it. The transmit frequency are 2402-2480MHz. We select 2402MHz, 2441MHz, and 2480MHz TX frequency to transmit. 9.5. Test Procedure 9.5.1.The transmitter output was connected to the spectrum analyzer through a low loss cable. 9.5.2.Set RBW of spectrum analyzer to 1MHz and VBW to 3MHz for GFSK mode 9.5.3.Set RBW of spectrum analyzer to 3MHz and VBW to 10MHz for other mode 9.5.4.Measurement the maximum peak output power. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 34 of 92 9.6. Test Result GFSK Mode Frequency
(MHz) 2402 2441 2480
/4 DQPSK Mode Frequency
(MHz) 2402 2441 2480 Maximum peak conducted output power
(dBm / W)
-1.01/0.0008
-0.44/0.0009
-0.22/0.0010 Maximum peak conducted output power
(dBm/W) 0.27/0.0011 0.81/0.0012 1.00/0.0013 The spectrum analyzer plots are attached as below. Limits
(dBm / W) 21 / 0.125 21 / 0.125 21 / 0.125 Limits dBm / W 21 / 0.125 21 / 0.125 21 / 0.125 Result Pass Pass Pass Result Pass Pass Pass FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 35 of 92 GFSK Mode Low channel Date: 18.JUL.2019 17:17:31 Middle channel Date: 18.JUL.2019 17:16:53 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 36 of 92 High channel Date: 18.JUL.2019 17:16:14
/4 DQPSK Mode Low channel Date: 18.JUL.2019 17:13:58 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 37 of 92 Middle channel Date: 18.JUL.2019 17:14:53 High channel Date: 18.JUL.2019 17:15:34 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 38 of 92 10. RADIATED EMISSION TEST 10.1.Block Diagram of Test Setup 10.1.1.Block diagram of connection between the EUT and peripherals EUT Figure 1 Setup: Transmitting mode 10.1.2.Semi-Anechoic Chamber Test Setup Diagram FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 39 of 92 10.2.The Requirement For Section 15.247(d) 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 Section 15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in Section 15.205(a), must also comply with the radiated emission limits specified in Section 15.209(a). FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 40 of 92 10.3.Transmitter Emission Limit Radiated emissions shall comply with the field strength limits shown in table 5 and table 6. Additionally, the level of any transmitter unwanted emission shall not exceed the level of the transmitters fundamental emission. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 41 of 92 10.4.Restricted bands of operation 10.4.1.FCC Part 15.205 Restricted bands of operation
(a) Except as shown in paragraph (d) of this section, Only spurious emissions are permitted in any of the frequency bands listed below:
MHz 0.090-0.110 10.495-0.505 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 MHz 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 MHz 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 GHz 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) 1Until February 1, 1999, this restricted band shall be 0.490-0.510 2Above 38.6
(b) Except as provided in paragraphs (d) and (e), the field strength of emission appearing within these frequency bands shall not exceed the limits shown in Section 15.209. At frequencies equal to or less than 1000MHz, Compliance with the limits in Section 15.209 shall be demonstrated using measurement instrumentation employing a CISPR quasi-peak detector. Above 1000MHz, compliance with the emission limits in Section15.209 shall be demonstrated based on the average value of the measured emissions. The provisions in Section 15.35 apply to these measurements. 10.5.Configuration of EUT on Measurement The equipment is installed on Radiated Emission Measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 42 of 92 10.6.Test Procedure The EUT and its simulators are placed on a turntable, which is 0.8 meter high above ground(Below 1GHz). The EUT and its simulators are placed on a turntable, which is 1.5 meter high above ground(Above 1GHz). The turntable can rotate 360 degrees to determine the position of the maximum emission level. EUT is set 3.0 meters away from the receiving antenna, which is mounted on an antenna tower. The antenna can be moved up and down between 1.0 meter and 4 meters to find out the maximum emission level. Broadband antenna (calibrated bi-log antenna) is used as receiving antenna. Both horizontal and vertical polarizations of the antenna are set on measurement. In order to find the maximum emission levels, all of the EUT location must be manipulated according to ANSI C63.10:2013 on radiated emission measurement. This EUT was tested in 3 orthogonal positions and the worst case position data was reported. During the radiated emission test, the spectrum analyzer was set with the following configurations:
1. The resolution bandwidth and video bandwidth of test receiver/spectrum analyzer is 120kHz for Quasi-peak at frequency below 1GHz. 2. The resolution bandwidth of test receiver/spectrum analyzer is 1MHz and video bandwidth is 3MHz for peak measurement with peak detector at frequency above 1GHz. 3. The resolution bandwidth of test receiver/spectrum analyzer is 1MHz and video bandwidth is 10Hz for Average measurement with peak detection at frequency above 1GHz. 4. All modes of operation were investigated and the worst-case emissions are reported. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 43 of 92 Frequency 10.7.Data Sample Reading
(dBv) 48.69 Margin
(dB)
-10.66 Limit Remark Factor
(dB/m)
-13.35 Result
(dBv/m) 35.34 46 QP
(dBv/m)
(MHz) X.XX Frequency(MHz) = Emission frequency in MHz Reading(dBv) = Uncorrected Analyzer/Receiver reading Factor (dB/m) = Antenna factor + Cable Loss Amplifier gain Result(dBv/m) = Reading(dBv) + Factor(dB/m) Limit (dBv/m) = Limit stated in standard Margin (dB) = Result(dBv/m) - Limit (dBv/m) QP = Quasi-peak Reading Calculation Formula:
Margin(dB) = Result (dBV/m)Limit(dBV/m) Result(dBV/m)= Reading(dBV)+ Factor(dB/m) The Margin column of the following data tables indicates the degree of compliance with the applicable limit. For example, a margin of -7dB means the emission is 7dB below the limit. 10.8.Test Result Pass. The frequency range from 9KHz to 26.5GHz is investigated. Note: 1.We tested GFSK mode, /4 DQPSK Mode, and recorded the worse case data
(/4 DQPSK mode) for all test mode. The spectrum analyzer plots are attached as below. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 44 of 92 9kHz-30MHz test data FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 45 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 46 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 47 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 48 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 49 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 50 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 51 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 52 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 53 of 92 30MHz-1GHz Test data FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 54 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 55 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 56 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 57 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 58 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 59 of 92 1GHz-18GHz test data FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 60 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 61 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 62 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 63 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 64 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 65 of 92 18GHz-26.5GHz test data FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 66 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 67 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 68 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 69 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 70 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 71 of 92 11. BAND EDGE COMPLIANCE TEST 11.1.Block Diagram of Test Setup EUT Low Loss Cable Spectrum Analyzer 11.2.The Requirement For Section 15.247(d) 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 Section 15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in Section 15.205(a), must also comply with the radiated emission limits specified in Section 15.209(a). 11.3.EUT Configuration on Measurement The equipment are installed on the emission Measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 11.4.Operating Condition of EUT 11.4.1.Setup the EUT and simulator as shown as Section 11.1. 11.4.2.Turn on the power of all equipment. 11.4.3.Let the EUT work in TX (Hopping off, Hopping on) modes measure it. The transmit frequency are 2402-2480MHz. We select 2402MHz, 2480MHz TX frequency to transmit. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 72 of 92 11.5.Test Procedure 11.5.1.The transmitter output was connected to the spectrum analyzer via a low loss cable. 11.5.2.Set RBW of spectrum analyzer to 100 kHz and VBW to 300 kHz with convenient frequency span including 100 kHz bandwidth from band edge. 11.5.3.The band edges was measured and recorded. 11.6.Test Result Non-hopping mode Frequency
(MHz) 2398.22 2483.50 2397.95 2483.50 Hopping mode Frequency
(MHz) 2400.00 2483.94 2400.00 2483.91 Result of Band Edge
(dBc) Limit of Band Edge
(dBc) Result GFSK mode 32.66 40.05
/4 DQPSK mode 32.89 40.04
> 20dBc
> 20dBc
> 20dBc
> 20dBc Pass Pass Pass Pass Result of Band Edge
(dBc) Limit of Band Edge
(dBc) Result GFSK mode 33.19 40.16
/4 DQPSK mode 33.58 43.55
> 20dBc
> 20dBc
> 20dBc
> 20dBc Pass Pass Pass Pass The spectrum analyzer plots are attached as below. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 73 of 92 Non-hopping mode (GFSK Mode) Date: 19.JUL.2019 15:27:10 Date: 19.JUL.2019 15:25:02 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 74 of 92 Non-hopping mode (/4 DQPSK Mode) Date: 19.JUL.2019 15:19:16 Date: 19.JUL.2019 15:22:20 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 75 of 92 Hopping mode (GFSK Mode) Date: 19.JUL.2019 15:41:38 Date: 19.JUL.2019 15:40:21 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 76 of 92 Hopping mode (/4 DQPSK Mode) Date: 19.JUL.2019 15:43:35 Date: 19.JUL.2019 15:51:56 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 77 of 92 Radiated Band Edge Result Note:
1. Emissions attenuated more than 20 dB below the permissible value are not reported. 2. The field strength is calculated by adding the antenna factor, high pass filter loss(if used) and cable loss, and subtracting the amplifier gain(if any)from the measured reading. The basic equation calculation is as follows:
Result = Reading + Corrected Factor 3. Display the measurement of peak values. Test Procedure:
The EUT and its simulators are placed on a turntable, which is 1.5 meter high above ground(Above 1GHz). The turntable can rotate 360 degrees to determine the position of the maximum emission level. EUT is set 3.0 meters away from the receiving antenna, which is mounted on an antenna tower. The antenna can be moved up and down between 1.0 meter and 4 meters to find out the maximum emission level. Broadband antenna
(calibrated bi-log antenna) is used as receiving antenna. Both horizontal and vertical polarizations of the antenna are set on measurement. In order to find the maximum emission levels, all of the EUT location must be manipulated according to ANSI C63.10:2013 on radiated emission measurement. This EUT was tested in 3 orthogonal positions and the worst case position data was reported. Let the EUT work in TX (Hopping off, Hopping on) modes measure it. We select 2402MHz, 2480MHz TX frequency to transmit(Hopping off mode). We select 2402-2480MHz TX frequency to transmit(Hopping on mode). During the radiated emission test, the spectrum analyzer was set with the following configurations:
1.The resolution bandwidth of test receiver/spectrum analyzer is 1MHz and video bandwidth is 3MHz for peak measurement with peak detector at frequency above 1GHz. 2.The resolution bandwidth of test receiver/spectrum analyzer is 1MHz and video bandwidth is 10Hz for Average measurement with peak detection at frequency above 1GHz. 3.All modes of operation were investigated and the worse case(/4 DQPSK Mode) emissions are reported. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 78 of 92 Non-hopping mode FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 79 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 80 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 81 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 82 of 92 12. AC POWER LINE CONDUCTED EMISSION TEST 12.1.Block Diagram of Test Setup Test Receiver AC Mains L.I.S.N Notebook PC 12.2.Test System Setup EUT FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 83 of 92 12.3.Test Limits Frequency
(MHz) 0.15 - 0.50 0.50 - 5.00 5.00 - 30.00 Limit dB(V) Quasi-peak Level 66.0 56.0 *
56.0 60.0 Average Level 56.0 46.0 *
46.0 50.0 NOTE1: The lower limit shall apply at the transition frequencies. NOTE2: The limit decreases linearly with the logarithm of the frequency in the range 0.15MHz to 0.50MHz. 12.4.Configuration of EUT on Measurement The equipments are installed on Power Line Conducted Emission Measurement to meet the commission requirement and operating regulations in a manner, which tends to maximize its emission characteristics in a normal application. 12.5.Operating Condition of EUT 12.5.1.Setup the EUT and simulator as shown as Section 12.1. 12.5.2.Turn on the power of all equipment. 12.5.3.Let the EUT work in test mode and measure it. 12.6.Test Procedure The EUT is put on the plane 0.8m high above the ground by insulating support and is connected to the power mains through a line impedance stabilization network (L.I.S.N.). This provides a 50ohm coupling impedance for the EUT system. Please refer the block diagram of the test setup and photographs. Both sides of AC lines are checked to find out the maximum conducted emission. In order to find the maximum emission levels, the relative positions of equipment and all of the interface cables shall be changed according to ANSI C63.4: 2014 on Conducted Emission Measurement. The bandwidth of test receiver (R & S ESCS30) is set at 9kHz. The frequency range from 150kHz to 30MHz is checked. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 84 of 92 12.7.Data Sample Frequency
(MHz) X.XX Transducer QuasiPeak value
(dB) 10.5 Level
(dBV) 51.1 Average Level
(dBV) 34.2 QuasiPeak Limit
(dBV) 56.0 Average Limit
(dBV) 46.0 QuasiPeak Margin
(dB) 4.9 Average Margin
(dB) 11.8 Remark
(Pass/Fail) Pass Frequency(MHz) = Emission frequency in MHz Transducer value(dB) = Insertion loss of LISN + Cable Loss Level(dBV) = Quasi-peak Reading/Average Reading + Transducer value Limit (dBV) = Limit stated in standard Calculation Formula:
Margin = Limit (dBV) - Level (dBV) 12.8.Test Result Pass. The frequency range from 150kHz to 30MHz is checked. Emissions attenuated more than 20 dB below the permissible value are not reported. All data was recorded in the Quasi-peak and average detection mode. The spectral diagrams are attached as below. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 85 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 86 of 92 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 87 of 92 13. CONDUCTED SPURIOUS EMISSION COMPLIANCE TEST 13.1.Block Diagram of Test Setup Low Loss Cable EUT Spectrum Analyzer 13.2.The Requirement For Section 15.247(d) 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 Section 15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in Section 15.205(a), must also comply with the radiated emission limits specified in Section 15.209(a). 13.3.EUT Configuration on Measurement The equipment is installed on the emission measurement to meet the commission requirements and operating regulations in a manner which tends to maximize its emission characteristics in normal application. 13.4.Operating Condition of EUT 13.4.1.Setup the EUT and simulator as shown as Section 13.1. 13.4.2.Turn on the power of all equipment. 13.4.3.Let the EUT work in TX modes measure it. The transmit frequency are 2402-2480 MHz. We select 2402MHz, 2441MHz, and 2480MHz TX frequency to transmit. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 88 of 92 13.5.Test Procedure 13.5.1.The transmitter output was connected to the spectrum analyzer via a low loss cable. 13.5.2.Set RBW of spectrum analyzer to 100kHz and VBW to 300kHz 13.5.3.The Conducted Spurious Emission was measured and recorded. 13.6.Test Result Pass. The spectrum analyzer plots are attached as below. FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 89 of 92 GFSK mode Low Channel Date: 19.JUL.2019 15:09:55 Middle Channel Date: 19.JUL.2019 15:11:22 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 90 of 92 High Channel Date: 19.JUL.2019 15:12:36
/4 DQPSK mode Low Channel Date: 19.JUL.2019 15:17:19 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 91 of 92 Middle Channel Date: 19.JUL.2019 15:15:03 High Channel Date: 19.JUL.2019 15:13:50 FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd. Report No.: ATE20191011 Page 92 of 92 14. ANTENNA REQUIREMENT 14.1.The Requirement According to Section 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. 14.2.Antenna Construction Device is equipped with permanent attached antenna, which isnt displaced by other antenna. The Max Antenna gain of EUT is 1.9dBi. Therefore, the equipment complies with the antenna requirement of Section 15.203.
***** End of Test Report *****
FCC ID: 2AHHETWSEBPRM Shenzhen Accurate Technology Co., Ltd.
frequency | equipment class | purpose | ||
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1 | 2019-08-28 | 2402 ~ 2480 | DSS - Part 15 Spread Spectrum Transmitter | Original Equipment |
app s | Applicant Information | |||||
---|---|---|---|---|---|---|
1 | Effective |
2019-08-28
|
||||
1 | Applicant's complete, legal business name |
THUMBS UP(UK)LTD
|
||||
1 | FCC Registration Number (FRN) |
0025317140
|
||||
1 | Physical Address |
Unit L,Braintree Industrial Estate,Braintree Road HA4 0EJ,Ruislip
|
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1 |
Unit L,Braintree Industrial Estate,Braintree Road
|
|||||
1 |
LONDON
|
|||||
1 |
United Kingdom
|
|||||
app s | TCB Information | |||||
1 | TCB Application Email Address |
f******@tuv.com
|
||||
1 | TCB Scope |
A4: UNII devices & low power transmitters using spread spectrum techniques
|
||||
app s | FCC ID | |||||
1 | Grantee Code |
2AHHE
|
||||
1 | Equipment Product Code |
TWSEBPRM
|
||||
app s | Person at the applicant's address to receive grant or for contact | |||||
1 | Name |
L****** S********
|
||||
1 | Telephone Number |
0845 ********
|
||||
1 | Fax Number |
0845 ********
|
||||
1 |
s******@thumbsupuk.com
|
|||||
app s | Technical Contact | |||||
1 | Firm Name |
THUMBS UK(UK)LTD
|
||||
1 | Name |
L******** J******
|
||||
1 | Physical Address |
United Kingdom
|
||||
1 | Telephone Number |
0845 ********
|
||||
1 |
j******@thumbsupcn.com
|
|||||
app s | Non Technical Contact | |||||
n/a | ||||||
app s | Confidentiality (long or short term) | |||||
1 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
1 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
1 | If so, specify the short-term confidentiality release date (MM/DD/YYYY format) | 02/16/2020 | ||||
if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
1 | Is this application for software defined/cognitive radio authorization? | No | ||||
1 | Equipment Class | DSS - Part 15 Spread Spectrum Transmitter | ||||
1 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | TRUE WIRELESS EARBUDS | ||||
1 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
1 | Modular Equipment Type | Does not apply | ||||
1 | Purpose / Application is for | Original Equipment | ||||
1 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | No | ||||
1 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
1 | Grant Comments | Output power listed is conducted. | ||||
1 | Is there an equipment authorization waiver associated with this application? | No | ||||
1 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
app s | Test Firm Name and Contact Information | |||||
1 | Firm Name |
Shenzhen Accurate Technology Co., Ltd.
|
||||
1 | Name |
S****** L****
|
||||
1 | Telephone Number |
+86-7********
|
||||
1 |
s******@atc-lab.com
|
|||||
Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
1 | 1 | 15C | 2402.00000000 | 2480.00000000 | 0.0013000 |
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC