NOTHING TECHNOLOGY LIMITED B184R Wireless Earphone 2AZEQB184R 2AZEQB184R b184r
Report No.: BL-SZ24C0152-703 TEST REPORT Applicant: Address: Equipment Type: Model Name: Brand Name: FCC ID: Test Standard: Maximum SAR: Sample Arrival Date: Test Date: Date of Issue: NOTHING TECHNOLOGY LIMITED Bedford House, 21A John Street, London, United Kingdom WC1N 2BF Wireless Earphone B184 cmf by NOTHING 2AZEQ-B184R FCC 47 CFR Part 2.1093 (refer to section 3.1) Head (1 g@0mm): 0.29 W/kg Nov. 26, 2024 Dec. 11, 2024 Jan. 22, 2025 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Xu Rui Checked by: Zong Liyao Approved by: Tolan Tu (Testing Director) _______________ _______________ _______________ Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 1 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 Version Rev. 01 Revision History Issue Date Jan. 22, 2025 Revisions Content Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ......................................................................................................... 4 1.1 Test Laboratory .............................................................................................................. 4 1.2 Test Location.................................................................................................................. 4 1.3 Test Environment Condition ........................................................................................... 4 2 PRODUCT INFORMATION ......................................................................................................... 5 2.1 Applicant Information...................................................................................................... 5 2.2 Manufacturer Information ............................................................................................... 5 2.3 General Description for Equipment under Test (EUT) ................................................... 5 2.4 Ancillary Equipment........................................................................................................ 5 2.5 Technical Information ..................................................................................................... 6 2.6 Antenna Location Sketch ............................................................................................... 7 3 SUMMARY OF TEST RESULT ................................................................................................... 8 3.1 Test Standards ............................................................................................................... 8 3.2 Device Category and SAR Limit ..................................................................................... 9 3.3 Test Result Summary ................................................................................................... 10 3.4 Test Uncertainty ........................................................................................................... 11 4 MEASUREMENT SYSTEM ....................................................................................................... 12 4.1 Specific Absorption Rate (SAR) Definition ................................................................... 12 4.2 DASY SAR System ...................................................................................................... 13 5 SYSTEM VERIFICATION.......................................................................................................... 20 5.1 Purpose of System Check ............................................................................................ 20 5.2 System Check Setup.................................................................................................... 20 6 TEST POSITION CONFIGURATIONS ...................................................................................... 21 6.1 Head Exposure Conditions........................................................................................... 21 Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 2 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 7 MEASUREMENT PROCEDURE ............................................................................................... 23 7.1 Measurement Process Diagram ................................................................................... 23 7.2 SAR Scan General Requirement ................................................................................. 24 7.3 Measurement Procedure .............................................................................................. 25 7.4 Area & Zoom Scan Procedure ..................................................................................... 25 8 CONDUCTED RF OUPUT POWER .......................................................................................... 26 8.1 Bluetooth ...................................................................................................................... 26 9 TEST RESULT .......................................................................................................................... 28 9.1 Bluetooth ...................................................................................................................... 28 10 SAR Measurement Variability.................................................................................................... 29 11 SIMULTANEOUS TRANSMISSION .......................................................................................... 30 12 TEST EQUIPMENTS LIST ........................................................................................................ 31 ANNEX A SIMULATING LIQUID VERIFICATION RESULT ......................................................... 32 ANNEX B SYSTEM CHECK RESULT .......................................................................................... 33 ANNEX C TEST DATA.................................................................................................................. 35 ANNEX D EUT EXTERNAL PHOTOS .......................................................................................... 36 ANNEX E SAR TEST SETUP PHOTOS....................................................................................... 36 ANNEX F CALIBRATION REPORT ............................................................................................. 36 ANNEX G TUNE-UP PROCEDURE ............................................................................................. 36 Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 3 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 1 GENERAL INFORMATION 1.1 Test Laboratory Name Address Phone Number Shenzhen BALUN Technology Co., Ltd. Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China +86 755 6685 0100 1.2 Test Location Name Location Accreditation Certificate Shenzhen BALUN Technology Co., Ltd. Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1/F, Building B, Ganghongji High-tech Intelligent Industrial Park, No. 1008, Songbai Road, Yangguang Community, Xili Sub-district, Nanshan District, Shenzhen, Guangdong Province, P. R. China The laboratory is a testing organization accredited by FCC as a accredited testing laboratory. The designation number is CN1196. 1.3 Test Environment Condition Ambient Temperature Ambient Relative Humidity 18 to 25 30% to 70% Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 4 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 2 PRODUCT INFORMATION 2.1 Applicant Information Applicant Address NOTHING TECHNOLOGY LIMITED Bedford House, 21A John Street, London, United Kingdom WC1N 2BF 2.2 Manufacturer Information Manufacturer Address NOTHING TECHNOLOGY LIMITED Bedford House, 21A John Street, London, United Kingdom WC1N 2BF 2.3 General Description for Equipment under Test (EUT) EUT Name Model Name Under Test Series Model Name Description of Model name differentiation Hardware Version Software Version Dimensions (Approx.) Weight (Approx.) Wireless Earphone B184 N/A N/A V1.4 V1.0.1.26 N/A N/A 2.4 Ancillary Equipment Ancillary Equipment 1 Battery Brand Name Model No. Serial No. Capacitance Rated Voltage Limited Voltage MIC-POWER M1250A N/A 53mAh 3.85V N/A Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 5 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 2.5 Technical Information Network and Wireless connectivity Bluetooth (BR+EDR+BLE) The requirement for the following technical information of the EUT was tested in this report: Operating Mode Frequency Range Antenna Type Hotspot Function Exposure Category Product Type EUT Type Bluetooth Bluetooth 2402 ~ 2480 MHz FPC Antenna Not Support General Population/Uncontrolled exposure Portable Device Production unit Identical prototype Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 6 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 2.6 Antenna Location Sketch Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 7 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 3 SUMMARY OF TEST RESULT 3.1 Test Standards No. Identity Document Title 47 CFR Part 1 2.1093 Radiofrequency radiation exposure evaluation: portable devices IEEE Standard for Safety Levels with Respect to Human Exposure 2 ANSI C95.1-1992 to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz IEEE Recommended Practice for Determining the Peak Spatial- IEEE Std. 1528- 3 Average Specific Absorption Rate(SAR) in the Human Head from 2013 Wireless Communications Devices: Measurement Techniques KDB 447498 D04 4 447498 D04 Interim General RF Exposure Guidance v01 v01 KDB 865664 D01 5 SAR Measurement 100 MHz to 6 GHz v01r04 KDB 865664 D02 6 RF Exposure Reporting v01r02 Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 8 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 3.2 Device Category and SAR Limit This device belongs to portable device category because its radiating structure is allowed to be used within 20 centimeters of the body of the user. Limit for General Population/Uncontrolled exposure should be applied for this device, it is 1.6 W/kg as averaged over any 1 gram of tissue. Table of Exposure Limits: Body Position Whole-Body SAR (averaged over the entire body) Partial-Body SAR (averaged over any 1 gram of tissue) SAR for hands, wrists, feet and ankles (averaged over any 10 grams of tissue) SAR Value (W/Kg) General Population/ Occupational/ Uncontrolled Exposure Controlled Exposure 0.08 0.4 1.60 8.0 4.0 20.0 NOTE: General Population/Uncontrolled Exposure: Locations where there is the exposure of individuals who have no knowledge or control of their exposure. General population/uncontrolled exposure limits are applicable to situations in which the general public may be exposed or in which persons who are exposed as a consequence of their employment may not be made fully aware of the potential for exposure or cannot exercise control over their exposure. Members of the general public would come under this category when exposure is not employment-related; for example, in the case of a wireless transmitter that exposes persons in its vicinity. Occupational/Controlled Exposure: Locations where there is exposure that may be incurred by persons who are aware of the potential for exposure, In general, occupational/controlled exposure limits are applicable to situations in which persons are exposed as a consequence of their employment, who have been made fully aware of the potential for exposure and can exercise control over their exposure. This exposure category is also applicable when the exposure is of a transient nature due to incidental passage through a location where the exposure levels may be higher than the general population/uncontrolled limits, but the exposed person is fully aware of the potential for exposure and can exercise control over his or her exposure by leaving the area or by some other appropriate means. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 9 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 3.3 Test Result Summary 3.3.1 Highest SAR Values Equipment Class Band DSS Bluetooth Maximum Report SAR Limits (W/kg) Test Verdict Maximum Report SAR 1g (W/kg) Head (Separation 0mm) Right Ear 0.29 0.29 1.6 Pass Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 10 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 3.4 Test Uncertainty According to KDB 865664 D01, When the highest measured 1 g SAR within a frequency band is < 1.5 W/kg, the extensive SAR measurement uncertainty analysis is not required in SAR reports submitted for equipment approval. The maximum 1 g SAR for the EUT in this report is 0.36 W/kg, which is lower than 1.5 W/kg, so the extensive SAR measurement uncertainty analysis is not required in this report. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 11 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 4 MEASUREMENT SYSTEM 4.1 Specific Absorption Rate (SAR) Definition 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. The standard recommends limits for two tiers of groups, occupational/controlled and general population/uncontrolled, based on a person's awareness and ability to exercise control over his or her exposure. In general, occupational/controlled exposure limits are higher than the limits for general population/uncontrolled. The SAR definition is the time derivative (rate) of the incremental energy (dW) absorbed by (dissipated in) an incremental mass (dm) contained in a volume element (dv) of a given density (). The equation description is as below: SAR is expressed in units of Watts per kilogram (W/kg) SAR measurement can be related to the electrical field in the tissue by Where: is the conductivity of the tissue, is the mass density of the tissue and E is the RMS electrical field strength. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 12 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 4.2 DASY SAR System 4.2.1 DASY SAR System Diagram The DASY5 system for performing compliance tests consists of the following items: 1. A standard high precision 6-axis robot (Stäubli RX family) with controller and software. An arm extension for accommodating the data acquisition electronics (DAE). 2. A dosimetric probe, i.e. an isotropic E-field probe optimized and calibrated for usage in tissue simulating liquid. The probe is equipped with an optical surface detector system. 3. A data acquisition electronic (DAE) which performs the signal amplification, signal multiplexing, AD- conversion, offset measurements, mechanical surface detection, collision detection, etc. The unit is battery powered with standard or rechargeable batteries. The signal is optically transmitted to the EOC. 4. A unit to operate the optical surface detector which is connected to the EOC. 5. The Electro-Optical Coupler (EOC) performs the conversion from the optical into a digital electric signal of the DAE. The EOC is connected to the DASY5 measurement server. 6. The DASY5 measurement server, which performs all real-time data evaluation for field measurements and surface detection, controls robot movements and handles safety operation. 7. DASY5 software and SEMCAD data evaluation software. 8. Remote control with teach panel and additional circuitry for robot safety such as warning lamps, etc. 9. The generic twin phantom enabling the testing of left-hand and right-hand usage. 10. The device holder for handheld mobile phones. 11. Tissue simulating liquid mixed according to the given recipes. 12. System validation dipoles allowing to validate the proper functioning of the system. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 13 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 4.2.2 Robot The Dasy SAR system uses the high precision robots. Symmetrical design with triangular core Built-in optical fiber for surface detection system For the 6-axis controller system, Built-in shielding against static charges PEEK enclosure material (resistant to organic solvents). The robot series have many features that are important for our application: High precision (repeatability ±0.02 mm) High reliability (industrial design) Low maintenance costs (virtually maintenance free due to direct drive gears; no belt drives) Jerk-free straight movements (brush less synchron motors; no stepper motors) Low ELF interference (motor control _elds shielded via the closed metallic construction shields) Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 14 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 4.2.3 E-Field Probe The probe is specially designed and calibrated for use in liquids with high permittivities for the measurements the Specific Dosimetric E-Field Probe EX3DV4-SN:7510 with following specifications is used. Construction Calibration Frequency Directivity Dynamic range Dimensions Application Symmetrical design with triangular core Built-in optical fiber for surface detection systemBuilt-in shielding against static charges PEEK enclosure material (resistant to organic solvents, e.g., glycolether) ISO/IEC 17025 calibration service available 10 MHz to 6 GHz; Linearity: ± 0.2 dB (30 MHz to 6 GHz) ± 0.2 dB in HSL (rotation around probe axis) ; ± 0.4 dB in HSL (rotation normal to probe axis) 5 W/g to > 100 mW/g; Linearity: ± 0.2 dB Overall length: 337 mm (Tip: 9 mm) Tip diameter: 2.5 mm (Body: 10 mm) Distance from probe tip to dipole centers: 1.0 mm General dosimetry up to 3 GHz Compliance tests of mobile phones Fast automatic scanning in arbitrary phantoms (EX3DV4) E-Field Probe Calibration Process Probe calibration is realized, in compliance with CENELEC EN 62209-1/-2 and IEEE 1528 std, with CALISAR, Antennessa proprietary calibration system. The calibration is performed with the EN 622091/2 annexe technique using reference guide at the five frequencies. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 15 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 4.2.4 Data Acquisition Electronics The data acquisition electronics (DAE) consist of a highly sensitive electrometer-grade preamplifier with auto-zeroing, a channel and gain-switching multiplexer, a fast 16 bit AD-converte and a command decoder with a 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. Input Impedance: 200MOhm The Inputs: Symmetrical and Floating Commom Mode Rejection: Above 80dB Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 16 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 4.2.5 Phantoms For the measurements the Specific Anthropomorphic Mannequin (SAM) defined by the IEEE SCC34/SC2 group is used. The phantom is a polyurethane shell integrated in a wooden table. The thickness of the phantom amounts to 2mm +/- 0.2mm. It enables the dosimetric evaluation of left and right phone usage and includes an additional flat phantom part for the simplified performance check. The phantom set-up includes a cover, which prevents the evaporation of the liquid. Left head Right head Flat phantom Photo of Phantom SN1576 Serial Number SN 1576 SAM Material Vinylester, glass fiber reinforced Length 1000 Height 500 Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 17 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 4.2.6 Device Holder The DASY5 device holder has two scales for device rotation (with respect to the body axis) and the device inclination (with respect to the line between the ear openings). The plane between the ear openings and the mouth tip has a rotation angle of 65°. 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. This device holder is used for standard mobile phones or PDAs only. If necessary an additional support of polystyrene material is used. Larger DUTs (e.g. notebooks) cannot be tested using this device holder. Instead a support of bigger polystyrene cubes and thin polystyrene plates is used to position the DUT in all relevant positions to find and measure spots with maximum SAR values. Therefore those devices are normally only tested at the flat part of the SAM. The positioning system allows obtaining cheek and tilting position with a very good accuracy. Incompliance with CENELEC, the tilt angle uncertainty is lower than 1°. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 18 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 4.2.7 Simulating Liquid For SAR measurement of the field distribution inside the phantom, the phantom must be filled with homogeneous tissue simulating liquid to a depth of at least 15 cm. 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. For body SAR testing, the liquid height from the center of the flat phantom to the liquid top surface is larger than 15 cm. The nominal dielectric values of the tissue simulating liquids in the phantom and the tolerance of 5%. Head Liquid Depth Body Liquid Depth The following table gives the recipes for tissue simulating liquid. Freq Range TSL Manufacturer / Model (MHz) Head WideBand SPEAG HBBL60010000V6 600-10000 Main Ingredients Ethanediol, Sodium petroleum sulfonate, Hexylene Glycol / 2-Methyl-pentane-2.4- diol, Alkoxylated alcohol Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 19 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 5 SYSTEM VERIFICATION 5.1 Purpose of System Check The system performance check verifies that the system operates within its specifications. System and operator errors can be detected and corrected. It is recommended that the system performance check be performed prior to any usage of the system in order to guarantee reproducible results. The system performance check uses normal SAR measurements in a simplified setup with a well characterized source. This setup was selected to give a high sensitivity to all parameters that might fail or vary over time. The system check does not intend to replace the calibration of the components, but indicates situations where the system uncertainty is exceeded due to drift or failure. 5.2 System Check Setup In the simplified setup for system evaluation, the EUT is replaced by a calibrated dipole and the power source is replaced by a continuous wave that comes from a signal generator. The calibrated dipole must be placed beneath the flat phantom section of the SAM twin phantom with the correct distance holder. The distance holder should touch the phantom surface with a light pressure at the reference marking and be oriented parallel to the long side of the phantom. The equipment setup is shown below: Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 20 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 6 TEST POSITION CONFIGURATIONS According to KDB 648474 D04 Handset, handsets are tested for SAR compliance in head, body-worn accessory and other use configurations described in the following subsections. 6.1 Head Exposure Conditions Head exposure is limited to next to the ear voice mode operations. Head SAR compliance is tested according to the test positions defined in IEEE Std 1528-2013 using the SAM phantom illustrated as below. 6.1.1 Two Imaginary Lines on the Handset (a) The vertical center line passes through two points on the front side of the handset - the midpoint of the width w t of the handset at the level of the acoustic output, and the midpoint of the width w b of the bottom of the handset. (b) The horizontal line is perpendicular to the vertical centerline and passes through the center of the acoustic output. The horizontal line is also tangential to the face of the handset at point A. (c) The two lines intersect at point A. Note that for many handsets, point A coincides with the center of the acoustic output; however, the acoustic output may be located elsewhere on the horizontal line. Also note that the vertical center line is not necessarily parallel to the front face of the handset, especially for clamshell handsets, handsets with flip covers, and other irregularly shaped handsets. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 21 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 6.1.2 Cheek Position (a) To position the device with the vertical center line of the body of the device and the horizontal line crossing the center piece in a plane parallel to the sagittal plane of the phantom. While maintaining the device in this plane, align the vertical center line with the reference plane containing the three ear and mouth reference point (M: Mouth, RE: Right Ear, and LE: Left Ear) and align the center of the ear piece with the line RE-LE. (b) To move the device towards the phantom with the ear piece aligned with the line LE-RE until the phone touched the ear. While maintaining the device in the reference plane and maintaining the phone contact with the ear, move the bottom of the phone until any point on the front side is in contact with the cheek of the phantom or until contact with the ear is lost. 6.1.3 Tilted Position (a) To position the device in the "cheek" position described above. (b) While maintaining the device the reference plane described above and pivoting against the ear, moves it outward away from the mouth by an angle of 15 degrees or until contact with the ear is lost. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 22 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 7 MEASUREMENT PROCEDURE 7.1 Measurement Process Diagram Repeated SAR KDB 865664 Start Power measurement Exclusion Thresholds N SAR Test consider SAR Position Decided KDB447498 Y EUT FUCTION Multiple Transmitting? N Not Required Y Perform SAR Testing SAR Result Scaled SAR KDB447498 TUNE-UP Description Estimate SAR Multiple Transmitting? Y N Max. SAR Sum. SAR Max. SAR Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 23 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 7.2 SAR Scan General Requirement Probe boundary effect error compensation is required for measurements with the probe tip closer than half a probe tip diameter to the phantom surface. Both the probe tip diameter and sensor offset distance must satisfy measurement protocols; to ensure probe boundary effect errors are minimized and the higher fields closest to the phantom surface can be correctly measured and extrapolated to the phantom surface for computing 1 g SAR. Tolerances of the post-processing algorithms must be verified by the test laboratory for the scan resolutions used in the SAR measurements, according to the reference distribution functions specified in IEEE Std 1528-2013. 3GHz >3GHz Maximum distance from closest measurement point (geometric center of probe sensors) to phantom surface 5±1 mm ½··ln(2)±0.5 mm Maximum probe angle from probe axis to phantom surface normal at the measurement location 30°±1° 20°±1° 2 GHz: 15 mm 2 3 GHz: 12 mm 34 GHz: 12 mm 4 6 GHz: 10 mm Maximum area scan spatial resolution: x Area , y Area When the x or y dimension of the test device, in the measurement plane orientation, is smaller than the above, the measurement resolution must be the corresponding x or y dimension of the test device with at least one measurement point on the test device. Maximum zoom scan spatial resolution: x Zoom , y Zoom 2 GHz: 8 mm 2 3 GHz: 5 mm* 34 GHz: 5 mm* 4 6 GHz: 4 mm* 34 GHz: 4 mm uniform grid: z Zoom (n) 5 mm 45 GHz: 3 mm Maximum zoom scan spatial resolution, normal to phantom surface graded grid z Zoom (1): between 1st two points closest to phantom surface z Zoom (n>1): between subsequent 4 mm 56 GHz: 2 mm 34 GHz: 3 mm 45 GHz: 2.5 mm 56 GHz: 2 mm 1.5·z Zoom (n-1) points Minimum zoom scan volume x, y, z 30 mm 34 GHz: 28 mm 45 GHz: 25 mm 56 GHz: 22 mm Note: 1. is the penetration depth of a plane-wave at normal incidence to the tissue medium; see draft standard IEEE P15282011 for details. 2. * When zoom scan is required and the reported SAR from the area scan based 1 g SAR estimation procedures of KDB 447498 is 1.4 W/kg, 8 mm, 7 mm and 5 mm zoom scan resolution may be applied, respectively, for 2 GHz to 3GHz, 3 GHz to 4 GHz and 4 GHz to 6 GHz. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 24 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 7.3 Measurement Procedure The following steps are used for each test position a. Establish a call with the maximum output power with a base station simulator. The connection between the mobile and the base station simulator is established via air interface b. Measurement of the local E-field value at a fixed location. This value serves as a reference value for calculating a possible power drift. c. Measurement of the SAR distribution with a grid of 8 to 16mm * 8 to16 mm and a constant distance to the inner surface of the phantom. Since the sensors cannot directly measure at the inner phantom surface, the values between the sensors and the inner phantom surface are extrapolated. With these values the area of the maximum SAR is calculated by an interpolation scheme. d. Around this point, a cube of 30 * 30 * 30 mm or 32 * 32 *32 mm is assessed by measuring 5 or 8 * 5 or 8*4 or 5 mm. With these data, the peak spatial-average SAR value can be calculated. 7.4 Area & Zoom Scan Procedure First Area Scan is used to locate the approximate location(s) of the local peak SAR value(s). The measurement grid within an Area Scan is defined by the grid extent, grid step size and grid offset. Next, in order to determine the EM field distribution in a three-dimensional spatial extension, Zoom Scan is required. The Zoom Scan is performed around the highest E-field value to determine the averaged SARdistribution over 10 g. Area scan and zoom scan resolution setting follows KDB 865664 D01v01r04 quoted below. When the 1 g SAR of the highest peak is within 2 dB of the SAR limit, additional zoom scans are required for other peaks within 2 dB of the highest peak that have not been included in any zoom scan to ensure there is no increase in SAR. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 25 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 8 CONDUCTED RF OUPUT POWER 8.1 Bluetooth Mode GFSK /4-DQPSK Channel 0 39 78 0 39 78 Frequency (MHz) 2402 2441 2480 2402 2441 2480 Average Power (dBm) 11.64 12.03 11.38 11.10 11.55 11.68 Tune-Up Limit (dBm) 13.00 13.00 13.00 12.00 12.00 12.00 SAR Test Require Yes Yes Yes No No No Mode 8-DPSK / Channel 0 39 78 / / / Frequency (MHz) 2402 2441 2480 / / / Average Power (dBm) 11.33 11.72 11.50 / / / Tune-Up Limit (dBm) 12.00 12.00 12.00 / / / SAR Test Require No No No / / / Mode BLE-1Mbps BLE-2Mbps Channel 0 19 39 1 19 38 Frequency (MHz) 2402 2440 2480 2404 2440 2478 Average Power (dBm) 2.43 2.40 2.33 2.84 2.63 2.34 Tune-Up Limit (dBm) 3.00 3.00 3.00 3.00 3.00 3.00 SAR Test Require No No No No No No Note: Since Bluetooth BR mode is the maximum output power mode, SAR measurements were performed with test software using DH5 modulation, and SAR measurement is not required for the EDR and LE. When the secondary mode is ¼ dB higher than the primary mode. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 26 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 Note: The Bluetooth BT DH5 duty cycle is 76.68% as following figure, according to 2016 Oct. TCB workshop for Bluetooth SAR scaling need further consideration and the maximum duty cycle is 100%, therefore the actual duty cycle will be scaled up to 100% for Bluetooth reported SAR calculation. Duty Cycle GFSK Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 27 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 9 TEST RESULT 9.1 Bluetooth Mode Position Dist. Ch. (mm) Freq. (MHz) Power Drift (dB) 1 g Meas SAR (W/kg) Meas. Power (dBm) Right Headset Front Side 0 39 2441 -0.05 0.052 Back Side 0 39 2441 0.14 0.087 Left Edge 0 Bluetooth Right Edge 0 GFSK-DH5 Top Edge 0 39 2441 -0.04 0.139 39 2441 -0.10 0.132 39 2441 -0.11 0.046 Left Edge 0 0 2402 0.01 0.137 Left Edge 0 78 2480 -0.03 0.155 Note: Refer to ANNEX C for the detailed test data for each test configuration. 12.03 12.03 12.03 12.03 12.03 11.64 11.38 Max. tune-up power (dBm) Scaling Factor 13.00 13.00 13.00 13.00 13.00 13.00 13.00 1.250 1.250 1.250 1.250 1.250 1.368 1.452 Duty cycle (%) Duty cycle Factor 76.68 76.68 76.68 76.68 76.68 76.68 76.68 1.304 1.304 1.304 1.304 1.304 1.304 1.304 1g Scaled SAR (W/kg) Meas. No. 0.085 / 0.142 / 0.227 / 0.215 / 0.075 / 0.244 / 0.293 1# Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 28 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 10 SAR Measurement Variability According to KDB 865664 D01, SAR measurement variability was assessed for each frequency band, which is determined by the SAR probe calibration point and tissue-equivalent medium used for the device measurements. When both head and body tissue-equivalent media are required for SAR measurements in a frequency band, the variability measurement procedures should be applied to the tissue medium with the highest measured SAR, using the highest measured SAR configuration for that tissue-equivalent medium. Alternatively, if the highest measured SAR for both head and body tissueequivalent media are 1.45 W/kg and the ratio of these highest SAR values, i.e., largest divided by smallest value, is 1.10, the highest SAR configuration for either head or body tissue-equivalent medium may be used to perform the repeated measurement. These additional measurements are repeated after the completion of all measurements requiring the same head or body tissue-equivalent medium in a frequency band. The test device should be returned to ambient conditions (normal room temperature) with the battery fully charged before it is re-mounted on the device holder for the repeated measurement(s) to minimize any unexpected variations in the repeated results. SAR repeated measurement procedure: 1When the highest measured SAR is < 0.80 W/kg, repeated measurement is not required. 2When the highest measured SAR is >= 0.80 W/kg, repeat that measurement once. 3If the ratio of largest to smallest SAR for the original and first repeated measurements is > 1.20, or when the original or repeated measurement is >= 1.45 W/kg, perform a second repeated measurement. 4If the ratio of largest to smallest SAR for the original, first and second repeated measurements is > 1.20, and the original, first or second repeated measurement is >= 1.5 W/kg, perform a third repeated measurement. Note: For 1g SAR, the highest measured 1g SAR is 0.16 < 0.80 W/kg, repeated measurement is not required. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 29 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 11 SIMULTANEOUS TRANSMISSION Note: The product has only one antenna for Bluetooth, so simultaneous transmission evaluation is not required in this report. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 30 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 12 TEST EQUIPMENTS LIST Description Manufacturer Model Serial No./Version Cal. Date Cal. Due PC Dell N/A N/A N/A N/A Test Software Speag DASY5 52.8.8.1222 N/A N/A 2450MHz Validation Dipole Speag D2450V2 SN: 952 2024/05/07 2027/05/06 Data Acquisition Electronicsr Speag DAE4 SN: 1711 2024/03/18 2025/03/17 E-Field Probe Speag EX3DV4 SN: 7510 2024/06/25 2025/06/24 Signal Generator R&S SMB100A 177746 2024/04/24 2025/04/23 Power Meter R&S NRVD-B2 835843/014 2024/08/08 2025/08/07 Power Sensor R&S NRV-Z4 100381 2024/08/08 2025/08/07 Power Sensor R&S NRV-Z2 100211 2024/08/08 2025/08/07 Network Analyzer Agilent E5071C MY46103472 2024/09/11 2025/09/10 Thermometer Elitech RC-4HC EF7216002985 2024/10/31 2025/10/30 Thermometer Elitech RC-4HC EF720B004811 2024/10/31 2025/10/30 Power Amplifier Mini-Circuits ZVA-183W-S+ 932502132 N/A N/A Dielectric Probe Kit Speag DAK3.5 SN: 1312 N/A N/A Phantom Speag SAM SN: 1576 N/A N/A Attenuator COM-MW ZA-S1-31 1305003187 N/A N/A Directional coupler AA-MCS AAMCS-UDC 000272 N/A N/A Note: For dipole antennas, BALUN has adopted 3 years as calibration intervals, and on annual basis, every measurement dipole has been evaluated and is in compliance with the following criteria: 1. There is no physical damage on the dipole; 2. System validation with specific dipole is within 10% of calibrated value; 3. Return-loss in within 20% of calibrated measurement. 4. Impedance (real or imaginary parts) in within 5 Ohms of calibrated measurement. Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 31 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 ANNEX A SIMULATING LIQUID VERIFICATION RESULT The dielectric parameters of the liquids were verified prior to the SAR evaluation using a DAK3.5 Dielectric Probe Kit. Date Liquid Fre. Temp. Type (MHz) () Meas. Conductivity () (S/m) Meas. Permittivity () 2024.12.11 Head 2450 21.1 1.82 39.14 Note: The tolerance limit of Conductivity and Permittivity is± 5%. Target Conductivity () (S/m) 1.80 Target Permittivity () 39.20 Conductivity Tolerance (%) 1.11 Permittivity Tolerance (%) -0.15 Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 32 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 ANNEX B SYSTEM CHECK RESULT Comparing to the original SAR value provided by SPEAG, the validation data should be within itsspecification of 10 %(for 1 g). Date Liquid Type Freq. (MHz) Power (mW) 2024.12.11 Head 2450 100 Note: The tolerance limit of System validation ±10%. Measured SAR (W/kg) 5.450 Normalized SAR (W/kg) 54.50 Dipole SAR (W/kg) 52.60 Tolerance (%) 3.61 Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 33 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 System Performance Check Data (2450MHz) Date: 2024.12.11 Communication System Band: D2450 (2450.0 MHz); Frequency: 2450 MHz;Duty Cycle: 1:1 Medium parameters used (interpolated): f = 2450 MHz; = 1.817 S/m; r = 39.139; = 1000 kg/m3 Phantom section: Flat Section Ambient Temperature:22.3 Liquid Temperature:21.1 DASY5 Configuration: · Probe: EX3DV4 - SN7510; ConvF(7.75, 7.75, 7.75); Calibrated: 2024.06.25 · Sensor-Surface: 4mm (Mechanical Surface Detection) · Electronics: DAE4 Sn1711; Calibrated: 2024.03.18 · Phantom: SAM1; Type: QD000P40CD; Serial: TP:1576 · Measurement SW: DASY52, Version 52.8 (8); SEMCAD X Version 14.6.10 (7331) CW2450/Area Scan (81x81x1): Interpolated grid: dx=1.200 mm, dy=1.200 mm Maximum value of SAR (interpolated) = 6.75 W/kg CW2450/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 58.89 V/m; Power Drift = -0.06 dB Peak SAR (extrapolated) = 11.4 W/kg SAR(1 g) = 5.45 W/kg; SAR(10 g) = 2.53 W/kg Smallest distance from peaks to all points 3 dB below = 10 mm Ratio of SAR at M2 to SAR at M1 = 50.1% Maximum value of SAR (measured) = 6.20 W/kg 0 dB = 6.20 W/kg Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 34 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 ANNEX C TEST DATA Meas.1 Body Plane with Left Edge 0mm on 78 Channel in Bluetooth mode Date: 2024.12.11 Communication System Band: BT; Frequency: 2480 MHz;Duty Cycle: 1:1.304 Medium parameters used (interpolated): f = 2480 MHz; = 1.855 S/m; r = 38.293; = 1000 kg/m3 Phantom section: Flat Section Ambient Temperature:22.3 Liquid Temperature:21.1 DASY5 Configuration: · Probe: EX3DV4 - SN7510; ConvF(7.75, 7.75, 7.75); Calibrated: 2024.06.25 · Sensor-Surface: 4mm (Mechanical Surface Detection) · Electronics: DAE4 Sn1711; Calibrated: 2024.03.18 · Phantom: SAM1; Type: QD000P40CD; Serial: TP:1576 · Measurement SW: DASY52, Version 52.8 (8); SEMCAD X Version 14.6.10 (7331) CH78/Area Scan (81x81x1): Interpolated grid: dx=1.200 mm, dy=1.200 mm Maximum value of SAR (interpolated) = 0.232 W/kg CH78/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 10.29 V/m; Power Drift = -0.03 dB Peak SAR (extrapolated) = 0.632 W/kg SAR(1 g) = 0.155 W/kg; SAR(10 g) = 0.050 W/kg Smallest distance from peaks to all points 3 dB below = 5 mm Ratio of SAR at M2 to SAR at M1 = 31.6% Maximum value of SAR (measured) = 0.204 W/kg 0 dB = 0.204 W/kg Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 35 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 ANNEX D EUT EXTERNAL PHOTOS Please refer the document "BL-SZ24C0152-AW.pdf". ANNEX E SAR TEST SETUP PHOTOS Please refer the document "BL-SZ24C0152-AS-2.pdf". ANNEX F CALIBRATION REPORT Please refer the document "BL-SZ24C0152-AC.pdf". ANNEX G TUNE-UP PROCEDURE Please refer the document "BL-SZ24C0152-AT-2.pdf". Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 36 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ24C0152-703 Statement 1. The laboratory guarantees the scientificity, accuracy and impartiality of the test, and is responsible for all the information in the report, except the information provided by the customer. The customer is responsible for the impact of the information provided on the validity of the results. 2. The report without China inspection body and laboratory Mandatory Approval (CMA) mark has no effect of proving to the society. 3. For the report with CNAS mark or A2LA mark, the items marked with "" are not within the accredited scope. 4. This report is invalid if it is altered, without the signature of the testing and approval personnel, or without the "inspection and testing dedicated stamp" or test report stamp. 5. The test data and results are only valid for the tested samples provided by the customer. 6. This report shall not be partially reproduced without the written permission of the laboratory. 7. Any objection shall be raised to the laboratory within 30 days after receiving the report. --END OF REPORT-- Tel: +86-755-66850100 E-mail: qc@baluntek.com Page No. 37 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Head-1 (2024-11-20) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China钛和检测认证集团股份有限公司