Parts List/Tune Up Info

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Guangzhou GRG Metrology & Test Co., Ltd.

Address:No.163 Pingyun Road, West of Huangpu Avenue, Guangzhou GuangdongChina

Tel:+86-20-38699960 Fax:+86-20-38695185 Email: emckf@grgtest.com http://www.grgtest.com

TEST REPORT

Verified Code:

Report No.:

E202012093384-3-G1

Application No.:

E202012093384

Client:

Realme Chongqing Mobile Telecommunications Corp., Ltd.

Address:

No.178 Yulong Avenue, Yufengshan, Yubei District, Chongqing，China.

Sample

Description:

realme Buds Q2

Model:

RMA2010

Test Specification:

IEEE Std. 1528:2013

47 CFR FCC Part 2.1093:2013

IEEE Std. C95.1:2019

Receipt Date:

2020-12-11

Test Date:

2021-01-12 to 2021-01-12

Issue Date:

Test Result:

Pass

Prepared By:

Test Engineer

Reviewed By:

Technical Manager

Approved By:

Manager

Other Aspects:

Note: This report instead the report E202012093384-3, and from the date of issuance of this report,

the report which being replaced become invalid.

Abbreviations: ok / P = passed; fail / F = failed; n.a. / N = not applicable;

The test result in this test report refers exclusively to the presented test sample. This report shall not be reproduced except in full, without the written

approval of GRGT.

061325

2021-01-22

Summary of content (50 pages)

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TEST REPORT Verified Code: 061325 Report No.: E202012093384-3-G1 Client: Realme Chongqing Mobile Telecommunications Corp., Ltd. Address: No.178 Yulong Avenue, Yufengshan, Yubei District, Chongqing，China. Sample Description: realme Buds Q2 Model: RMA2010 Test Specification: IEEE Std. 1528:2013 47 CFR FCC Part 2.1093:2013 IEEE Std. C95.1:2019 Receipt Date: 2020-12-11 Test Date: 2021-01-12 to 2021-01-12 Issue Date: 2021-01-22 Test Result: Pass Prepared By: Test Engineer Application No.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 DIRECTIONS OF TEST 1. This station carries out test task according to the national regulation of verifications which can be traced to National Primary Standards and BIPM. 2. The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. 3.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 TABLE OF CONTENTS 1. GENERAL INFORMATION ...................................................................................................................... 3 2. GENERAL INFORMATION OF EUT .......................................................................................................... 4 2.1 STATEMENT OF COMPLIANCE ...................................................................................................................
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Report No.: E202012093384-3-G1 Application No.: E202012093384 1. GENERAL INFORMATION Equipment realme Buds Q2 Brand Name realme Model Name RMA2010 Model difference(s) / Sample No.: 0006,0007 Manufacturer Realme Chongqing Mobile Telecommunications Corp., Ltd Address Factory No.178 Yulong Avenue, Yufengshan, Yubei District, Chongqing，China.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 2. GENERAL INFORMATION OF EUT 2.1 STATEMENT OF COMPLIANCE Frequency Band Bluetooth Highest Reported 1g-SAR(W/Kg) Left Ear 0.07056 Right Ear 0.04884 Test Result SAR Test Limit (W/Kg) 1.6 PASS Note： This device is in compliance with Specific Absorption Rate (SAR) for general population/uncontrolled exposure limits (1.6 W/kg) specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEE C95.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 2.2 GENERAL DESCRIPTION Equipment realme Buds Q2 Brand Name realme Model Name RMA2010 Series Model / Model Difference / Device Type Portable device HW Version V4 SW Version V1.1.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 2.3 LABORATORY ENVIRONMENT Temperature Min. = 18ºC, Max. = 25ºC Relative humidity Min. = 30%, Max. = 70% < 0.5Ω Ground system resistance Ambient noise is checked and found very low and in compliance with requirement of standards. Reflection of surrounding objects is minimized and in compliance with requirement of standards.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 3. LABORATORY AND ACCREDITATIONS 3.1 LABORATORY The tests & measurements refer to this report were performed by Shenzhen EMC Laboratory of Guangzhou GRG Metrology & Test Co,. Ltd. No.1301 Guanguang Road Xinlan Community, Guanlan Street, Longhua District Add.: Shenzhen, 518110, People’s Republic of China. P.C.: 518000 Tel : 0755-61180008 Fax: 0755-61180008 3.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 4. SAR MEASUREMENTS SYSTEM 4.1 DEFINITION OF SPECIFIC ABSORPTION RATE (SAR) SAR is related to the rate at which energy is absorbed per unit mass in an object exposed to a radio field. The SAR distribution in a biological body is complicated and is usually carried out by experimental techniques or numerical modeling.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 4.2 SAR SYSTEM DASY System Configurations The DASY system for performance compliance tests is illustrated above graphically.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 4.3 E-FIELD PROBE The SAR measurement is conducted with the dosimetric probe (manufactured by SPEAG).The probe is specially designed and calibrated for use in liquid with high permittivity. The dosimetric probe has special calibration in liquid at different frequency. This probe has a built in optical surface detection system to prevent from collision with phantom.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 4.4 DATA ACQUISITION ELECTRONICS (DAE) The data acquisition electronics (DAE) consists of a highly sensitive electrometer-grade preamplifier with auto-zeroing, a channel and gain-switching multiplexer, a fast 16 bit AD-converter and a command decoder and control logic unit. Transmission to the measurement server is accomplished through an optical downlink for data and status information as well as an optical uplink for commands and the clock.
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Report No.: E202012093384-3-G1 4.5 Application No.: E202012093384 ROBOT The SPEAG DASY system uses the high precision robots (DASY5: TX60XL) type from Stäubli SA (France). For the 6-axis controller system, the robot controller version (DASY5: CS8c) from Stäubli is used. The Stäubli robot series have many features that are important for our application:     High precision (repeatability ±0.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 4.6 MEASUREMENT SERVER The measurement server is based on a PC/104 CPU board with CPU (DASY5: 400 MHz, Intel Celeron), chip disk (DASY5: 128 MB), RAM (DASY5: 128 MB). The necessary circuits for communication with the DAE electronic box, as well as the 16 bit AD converter system for optical detection and digital I/O interface are contained on the DASY I/O board, which is directly connected to the PC/104 bus of the CPU board.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 4.7 PHANTOM Shell Thickness Filling Volume Dimensions Measurement Areas 2 ±0.2 mm; Center ear point: 6 ±0.2 mm Approx. 25 liters Length: 1000 mm; Width: 500 mm; Height: adjustable feet Left Hand, Right Hand, Flat Phantom Photo of SAM Phantom The bottom plate contains three pair of bolts for locking the device holder. The device holder positions are adjusted to the standard measurement positions in the three sections.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 4.8 DEVICE HOLDER The SAR in the phantom is approximately inversely proportional to the square of the distance between the source and the liquid surface. For a source at 5 mm distance, a positioning uncertainty of ±0.5mm would produce a SAR uncertainty of ± 20%. Accurate device positioning is therefore crucial for accurate and repeatable measurements. The positions in which the devices must be measured are defined by the standards.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 4.9 DATA STORAGE AND EVALUATION  Data Storage The DASY software stores the assessed data from the data acquisition electronics as raw data (in microvolt readings from the probe sensors), together with all the necessary software parameters for the data evaluation (probe calibration data, liquid parameters and device frequency and modulation data) in measurement files.
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Report No.: E202012093384-3-G1 Application No.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 5. TEST EQUIPMENT LIST Manufactur er SPEAG Type No. Serial No. D2450V2 903 2019.10.15 2022.10.14 SPEAG EX3DV4 SN 7514 2020.09.01 2021.08.31 SPEAG DAE4 SN 796 2020.05.06 2021.05.05 Keysight 85032F MY53202597 2020.09.25 2021.09.24 SPEAG DAK-3.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 6. SYSTEM VERIFICATION PROCEDURE 6.1 TISSUE VERIFICATION For the measurement of the field distribution inside the SAM phantom with DASY, the phantom must be filled with around 25 liters of homogeneous body tissue simulating liquid. For head SAR testing, the liquid height from the ear reference point (ERP) of the phantom to the liquid top surface is larger than 15 cm, which is shown in Fig. 6.1.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 6.2 SYSTEM CHECK PROCEDURE Each DASY system is equipped with one or more system validation kits. These units, together with the predefined measurement procedures within the DASY software, enable the user to conduct the system performance check and system validation. System validation kit includes a dipole, tripod holder to fix it underneath the flat phantom and a corresponding distance holder.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 Photo of Dipole Setup  Validation Results Comparing to the original SAR value provided by SPEAG, the verification data should be within its specification of 10%. The table below shows the target SAR and measured SAR after normalized to 1W input power. It indicates that the system performance check can meet the variation criterion and the plots can be referred to Appendix A of this report.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 7. SAR MEASUREMENT VARIABILITY AND UNCERTAINTY 7.1 SAR MEASUREMENT VARIABILITY Per KDB865664 D01 SAR measurement 100 MHz to 6 GHz, SAR measurement variability must be assessed for each frequency band, which is determined by the SAR probe calibration point and tissue-equivalent medium used for the device measurements.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 8. EUT TESTING POSITION 8.1 BODY WORN POSITION Body-worn operating configurations are tested with the belt-clips and holsters attached to the device and positioned against a flat phantom in a normal use configuration. Per KDB 648474 D04, body-worn accessory exposure is typically related to voice mode operations when handsets are carried in body-worn accessories.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 9. MEASUREMENT PROCEDURES The measurement procedures are as follows: (a) Use base station simulator (if applicable) or engineering software to transmit RF power continuously (continuous Tx) in the middle channel. (b) Keep EUT to radiate maximum output power or 100% duty factor (if applicable) (c) Measure output power through RF cable and power meter. (d) Place the EUT in the positions as setup photos demonstrates.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 software can find the maximum found in the scanned area, within a range of the global maximum. The range (in dB0 is specified in the standards for compliance testing.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 9.4 ZOOM SCAN PROCEDURES Zoom scans are used assess the peak spatial SAR values within a cubic averaging volume containing 1 gram and 10gram of simulated tissue. The zoom scan measures points (refer to table below) within a cube shoes base faces are centered on the maxima found in a preceding area scan job within the same procedure.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 9.5 VOLUME SCAN PROCEDURES The volume scan is used for assess overlapping SAR distributions for antennas transmitting in different frequency bands. It is equivalent to an oversized zoom scan used in standalone measurements. The measurement volume will be used to enclose all the simultaneous transmitting antennas. For antennas transmitting simultaneously in different frequency bands, the volume scan is measured separately in each frequency band.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 10. CONDUCTED POWER Left Mode Channel 00 Frequency (MHz) 2402 Conducted Power (dBm) 11.81 GFSK 39 2441 11.95 78 2480 11.93 00 2402 11.76 39 2441 11.86 78 2480 12.00 00 2402 11.73 39 2441 11.88 78 2480 11.95 Mode Channel 00 Frequency (MHz) 2402 Conducted Power (dBm) 11.43 GFSK 39 2441 11.50 78 2480 11.53 00 2402 11.42 39 2441 11.54 78 2480 11.51 00 2402 11.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 of 4.3.1 and also transmits simultaneously with other antennas, the standalone SAR value must be estimated according to the following to determine the simultaneous transmission SAR test exclusion criteria: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)]·[√f(GHz)/x] W/kg, for test separation distances ≤ 50 mm; where x = 7.5 for 1-g SAR and x = 18.75 for 10-g SAR. 0.4 W/kg for 1-g SAR and 1.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 11. SAR TEST RESULTS SUMMARY General Note: 1. Per KDB 447498 D01v05r01, the reported SAR is the measured SAR value adjusted for maximum tune-up tolerance. Scaling Factor = tune-up limit power (mW) / EUT RF power (mW), where tune-up limit is the maximum rated power among all production units. Reported SAR(W/kg)= Measured SAR(W/kg)* Scaling Factor 2.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 12. Simultaneous Transmission Analysis N/A.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 APPENDIX A. SYSTEM CHECKING SCANS 2450MHz Head System Check Communication System: UID 0, CW (0); Frequency: 2450 MHz Medium parameters used: f = 2450 MHz; ζ = 1.83 S/m; εr = 39.621; ρ = 1000 kg/m3 Phantom section: Flat Section DASY Configuration:      Probe: EX3DV4 - SN7514; ConvF(7.18, 7.18, 7.18); Calibrated: 2020/9/1; Sensor-Surface: 3mm (Mechanical Surface Detection), z = 2.0, 32.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 APPENDIX B. MEASUREMENT SCANS 2021/01/12 BT_Left Ear_Front Face_Ch78 Communication System: UID 0, Bluetooth (0); Frequency: 2480 MHz Medium parameters used: f = 2480 MHz; ζ = 1.891 S/m; εr = 39.547; ρ = 1000 kg/m3 Phantom section: Flat Section DASY Configuration:      Probe: EX3DV4 - SN7514; ConvF(7.18, 7.18, 7.18); Calibrated: 2020/9/1; Sensor-Surface: 3mm (Mechanical Surface Detection), z = -9.0, 31.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 2021/01/12 BT_Left Ear_Rear Face_Ch78 Communication System: UID 0, Bluetooth (0); Frequency: 2480 MHz Medium parameters used: f = 2480 MHz; ζ = 1.891 S/m; εr = 39.547; ρ = 1000 kg/m3 Phantom section: Flat Section DASY Configuration:      Probe: EX3DV4 - SN7514; ConvF(7.18, 7.18, 7.18); Calibrated: 2020/9/1; Sensor-Surface: 3mm (Mechanical Surface Detection), z = -9.0, 31.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 2021/01/12 BT_Right Ear_Front Face_Ch39 #3 Communication System: UID 0, Bluetooth (0); Frequency: 2441 MHz Medium parameters used: f = 2441 MHz; ζ = 1.804 S/m; εr = 39.604; ρ = 1000 kg/m3 Phantom section: Flat Section DASY Configuration:      Probe: EX3DV4 - SN7514; ConvF(7.18, 7.18, 7.18); Calibrated: 2020/9/1; Sensor-Surface: 3mm (Mechanical Surface Detection), z = -9.0, 31.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 2021/01/12 BT_Right Ear_Left Side_Ch39 Communication System: UID 0, Bluetooth (0); Frequency: 2441 MHz Medium parameters used: f = 2441 MHz; ζ = 1.804 S/m; εr = 39.604; ρ = 1000 kg/m3 Phantom section: Flat Section DASY Configuration:      Probe: EX3DV4 - SN7514; ConvF(7.18, 7.18, 7.18); Calibrated: 2020/9/1; Sensor-Surface: 3mm (Mechanical Surface Detection), z = -9.0, 31.
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Report No.: E202012093384-3-G1 Application No.: E202012093384 APPENDIX C.
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