A01R Bbtalkin Advance RF Exposure Info SAR - 5 IHR FAC INC.
IHR FAC INC. Bbtalkin Advance
FCC SAR Test Report FCC ID:2ALMN-A01R Project No. Equipment : 1803047 : Bbtalkin Advance Model Name Applicant Address : A-01R : IHR FAC INC. : 2F, NO.455, Sec. 2, Zhongqing Rd., Beitun Dist., Taichung City 406, Taiwan (R.O.C) Date of Receipt Date of Test Issued Date Tested by March, 13. 2018 Jul, 09. 2018 Jul, 19. 2018 BTL Inc. PREPARED BY (Morrison Huang) APPROVED BY (Herbort Liu) BTL INC. No. 68-1, Ln. 169, Sec.2, Datong Rd., Xizhi Dist., New Taipei City 221, Taiwan TEL:+886-2-2657-3299 FAX: +886-2-2657-3331 Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 1 / 28 Declaration BTL represents to the client that testing is done in accordance with standard procedures as applicable and that test instruments used has been calibrated with standards traceable to international standard(s) and/or national standard(s). BTL's reports apply only to the specific samples tested under conditions. It is manufacture’s responsibility to ensure that additional production units of this model are manufactured with the identical electrical and mechanical components. BTL shall have no liability for any declarations, inferences or generalizations drawn by the client or others from BTL issued reports. BTL’s report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the Federal Government. This report is the confidential property of the client. As a mutual protection to the clients, the public and BTL-self, extracts from the test report shall not be reproduced except in full with BTL’s authorized written approval. BTL’s laboratory quality assurance procedures are in compliance with the ISO Guide17025 requirements, and accredited by the conformity assessment authorities listed in this test report. Limitation For the use of the authority's logo is limited unless the Test Standard(s)/Scope(s)/Item(s) mentioned in this test report is (are) included in the conformity assessment authorities acceptance respective. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 2 / 28 Table of Contents Page 1. . GENERAL SUMMARY 2. . RF EMISSIONS MEASUREMENT 2.1. TEST FACILITY 2.2. MEASUREMENT UNCERTAINTY 3. . GENERAL INFORMATION 3.1. STATEMENT OF COMPLIANCE 3.2. GENERAL DESCRIPTION OF EUT 3.3. LABORATORY ENVIRONMENT 3.4. MAIN TEST INSTRUMENTS 4. . SAR MEASUREMENTS SYSTEM CONFIGURATION 10 11 4.1. SAR MEASUREMENT SET-UP 11 4.2. DASY5E-FIELDPROBESYSTEM 12 5. . SYSTEM VERIFICATION PROCEDURE 20 5.1. TISSUE VERIFICATION 20 5.2. SYSTEM CHECK 21 5.3. SYSTEM CHECK PROCEDURE 21 6. . SAR MEASUREMENT VARIABILITY AND UNCERTAINTY 6.1. SAR MEASUREMENT VARIABILITY 7. . OPERATIONAL CONDITIONS DURING TEST 22 22 22 7.1. SAR TEST CONFIGURATION 7.1.1. BT TEST CONFIGURATION 22 22 7.2 TEST POSITION 23 8. . TEST RESULT 24 8.1. CONDUCTED POWER RESULTS 24 8.2. SAR TEST RESULTS 25 APPENDIX 27 1. TEST LAYOUT 27 Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 3 / 28 Table of Contents Page Appendix A. SAR Plots of System Verification Appendix B. SAR Plots of SAR Measurement Appendix C. Calibration Certificate for Probe and Dipole Appendix D. Photographs of the Test Set-Up Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 4 / 28 REPORT ISSUED HISTORY Issued No. BTL-FCC SAR-1-1803047 Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 Description Original Issue Issued Date Jul. 19, 2018 5 / 28 1.. GENERAL SUMMARY Equipment Bbtalkin Advance Brand Name Bb TALKIN' Model Name A-01R Manufacturer SHIN PUU TECHNOLOGY CO., LTD. Address No. 47, Neihsi Rd., Lu Chu Dist., Taoyuan City 338, Taiwan (R.O.C) Standard(s) ANSI Std C95.1-1992 Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz - 300 GHz.(IEEE Std C95.1-1991) IEEE Std 1528-2013 Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques KDB447498 D01 General RF Exposure Guidance v06 KDB248227 D01 802. 11 Wi-Fi SAR v02r02 KDB865664 D01 SAR measurement 100 MHz to 6 GHz v01r04 KDB865664 D02 SAR Reporting v01r02 KDB690783 D01 SAR Listings on Grants v01r03 The above equipment has been tested and found compliance with the requirement of the relative standards by BTL Inc. The test data, data evaluation, and equipment configuration contained in our test report (Ref No. BTL-FCC SAR-1-1803047) were obtained utilizing the test procedures, test instruments, test sites that has been accredited by the Authority of TAF according to the ISO-17025 quality assessment standard and technical standard(s). Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 6 / 28 2.. RF EMISSIONS MEASUREMENT 2.1. TEST FACILITY The test facilities used to collect the test data in this report is SAR room at the location of 68-1, Ln. 169, Sec.2, Datong Rd., Xizhi Dist., New Taipei City 221, Taiwan.. No. 2.2. MEASUREMENT UNCERTAINTY Note: Per KDB865664 D01 SAR Measurement 100 MHz to 6 GHz, when the highest measured 1-g SAR within a frequency band is < 1.5 W/kg, the extensive SAR measurement uncertainty analysis described in IEEE Std 1528-2013 is not required in SAR reports submitted for equipment approval. The equivalent ratio (1.5/1.6) is applied to extremity and occupational exposure conditions. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 7 / 28 3.. GENERAL INFORMATION 3.1. STATEMENT OF COMPLIANCE Equipment Class DTS MAX SAR Highest Body Mode SAR-1g (W/kg) 1.07 Bluetooth_LE 1.07 Note: 1) The device is in compliance with Specific Absorption Rate(SAR)for general population uncontrolled exposure limits according to the FCC rule §2.1093, the ANSI C95.1:1992/IEEE C95.1:1991, the NCRP Report Number 86 for uncontrolled environment and had been tested in accordance with the measurement methods and procedures specified in IEEE Std 1528-2013 . Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 8 / 28 3.2. GENERAL DESCRIPTION OF EUT Equipment Model Name Working Frequency Operation Frequency Range(s) Test Channels (low-mid-high): Bbtalkin Advance A-01R 2.4GHz (Bluetooth 3.0+EDR & Bluetooth BLE) Bluetooth 2402 ~2480 MHz 0-19-39 (Bluetooth) Information Peak Gian (dBi) Product Description Antenna Gain Model No. Vendor MASTER WAVE 2.4G : 3.64 Copper Antenna 907X00544X0 TECHNOLOGY CO., LTD. 3.3. LABORATORY ENVIRONMENT Temperature Relative humidity Min. = 18ºC, Max. = 25ºC 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. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 9 / 28 3.4. MAIN TEST INSTRUMENTS Item Equipment Manufacturer Model Serial No. Cal. Date Cal. Interval E-field Probe Speag EX3DV4 7369 Aug. 24, 2017 1 Year Data Acquisition Electronics Speag DAE4 1486 Aug. 17, 2017 1 Year System Validation Dipole Speag 973 Aug. 14, 2015 3 Year Twin Sam Phantom Speag 1897 N/A N/A Keysight MY46524658 Dec. 14, 2017 1 Year keysight N5172B MY56200462 April. 23, 2018 1 Year ENA Network Analyzer EXG-B RF Vector Signal Generator Spectyrm Analyzer Power Meter Power Sensor D2450V2 Twin Sam Phantom V5.0 E5071C Keysight Anritsu Anritsu N9020A ML2495A MA2411B MY52091060 1128008 1126001 Mar. 06, 2018 Oct. 02, 2017 Oct. 02, 2017 1 Year 1 Year 1 Year 10 Power Meter Anritsu ML2487A 6K00004714 Sep. 11, 2017 1 Year 11 Power Sensor Anritsu MA2411A 34138 Sep. 11, 2017 1 Year 12 Dielectric Assessment Kit Speag DAK-3.5 1226 Dec. 09, 2015 N/A 13 Dual directional coupler Woken TS-PCC0M-05 107090019 May 11, 2018 1 Year 14 Power Amplifier Mini-Circuits ZVE-2W-272+ N650001538 N/A Note 1 Remark: 1. “N/A” denotes no model name, serial No. or calibration specified. 2. * These test equipments have been recalibrated between the test periods. All these test equipments were within the valid period when the tests were performed. 3. 1) Per KDB865664 D01 requirements for dipole calibration, the test laboratory has adopted three-year extended calibration interval. Each measured dipole is expected to evaluate with the following criteria at least on annual interval in Appendix C. a) There is no physical damage on the dipole; b) System check with specific dipole is within 10% of calibrated value; c) The most recent return-loss result , measured at least annually, deviates by no more than 20% from the previous measurement; d) The most recent measurement of the real or imaginary parts of the impedance, measured at least annually is within 5Ω from the previous measurement. 2) Network analyzer probe calibration against air, distilled water and a short block performed before measuring liquid parameters. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 10 / 28 4.. SAR MEASUREMENTS SYSTEM CONFIGURATION 4.1. SAR MEASUREMENT SET-UP 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. TheDASY5 measurement server, which performs all real-time data evaluation for field measurements and surface detection, controls robot movements and handles safety operation. A computer operating Windows 7 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. 4.1.1. Test Setup Layout Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 11 / 28 4.2. DASY5E-FIELDPROBESYSTEM The SAR measurements were conducted with the dosimetric probe EX3DV4 (manufactured by SPEAG),designed in the classical triangular configuration and optimized for dosimetric evaluation. 4.2.1. EX3DV4 PROBE SPECIFICATION Construction Calibration Frequency Directivity Dynamic Range Dimensions Symmetrical design with triangular core Interleaved sensors Built-in shielding against static charges PEEK enclosure material (resistant to organic solvents, e.g., DGBE) ISO/IEC 17025 calibration service available 10 MHz to 6 GHz Linearity: ± 0.2 dB (30 MHz to 6 GHz) ± 0.3 dB in HSL (rotation around probe axis) ± 0.5 dB in tissue material (rotation normal to probe axis) 10 µW/g to > 100 mW/g Linearity:± 0.2dB Overall length: 330 mm (Tip: 20 mm) Tip diameter: 2.5 mm (Body: 12 mm) Distance from probe tip to dipole centers: 1.0 mm EX3DV4 E-field Probe Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 12 / 28 4.2.2. E-FIELD PROBE CALIBRATION Each probe is calibrated according to a dosimetric assessment procedure with accuracy better than ±10%. The spherical isotropy was evaluated and found to be better than ± 0.25dB. The sensitivity parameters (NormX, NormY, NormZ), the diode compression parameter (DCP) and the conversion factor (ConvF) of the probe are tested. The free space E-field from amplified probe outputs is determined in a test chamber. This is performed in a TEM cell for frequencies bellow 1 GHz, and in a wave guide above 1 GHz for free space. For the free space calibration, the probe is placed in the volumetric center of the cavity and at the proper orientation with the field. The probe is then rotated 360 degrees. E-field temperature correlation calibration is performed in a flat phantom filled with the appropriate simulated brain tissue. The measured free space E-field in the medium correlates to temperature rise in a dielectric medium. For temperature correlation calibration a RF transparent thermistor-based temperature probe is used in conjunction with the E-field probe. Where: ∆t = Exposure time (30 seconds), C = Heat capacity of tissue (brain or muscle), ∆T = Temperature increase due to RF exposure. Or Where: σ = Simulated tissue conductivity, ρ = Tissue density (kg/m3). Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 13 / 28 4.2.3. OTHER TEST EQUIPMENT 220.127.116.11. Device Holder for Transmitters Construction: Simple but effective and easy-to-use extension for Mounting Device that facilitates the testing of larger devices (e.g., laptops, cameras, etc.) It is light weight and fits easily on the upper part of the Mounting Device in place of the phone positioner. The extension is fully compatible with the Twin SAM, ELI4and SAM v6.0Phantoms. Material: POM, Acrylic glass, Foam 18.104.22.168 Phantom Model Construction Shell Thickness Filling Volume Dimensions Aailable Model Construction Shell Thickness Filling Volume Dimensions Aailable ELI4 Phantom Phantom for compliance testing of handheld and body-mounted wireless devices in the frequency range of 30 MHz to 6 GHz. ELI is fully compatible with the IEC 62209-2 standard and all known tissue simulating liquids. ELI has been optimized regarding its performance and can be integrated into our standard phantom tables. A cover prevents evaporation of the liquid. Reference markings on the phantom allow installation of the complete setup, including all predefined phantom positions and measurement grids, by teaching three points. The phantom is compatible with all SPEAG dosimetric probes and dipoles. 2±0.1 mm Approx. 30 liters Length: 600 mm ; Width: 190mm Height: adjustable feet Special Twin SAM The shell corresponds to the specifications of the Specific Anthropomorphic Mannequin (SAM) phantom defined in IEEE 1528 and IEC 62209-1. It enables the dosimetric evaluation of left and right hand phone usage as well as body mounted usage at the flat phantom region. A cover prevents evaporation of the liquid. Reference markings on the phantom allow the complete setup of all predefined phantom positions and measurement grids by teaching three points with the robot. 2 ± 0.2 mm Approx. 25 liters Length:1000mm; Width: 500mm Height: adjustable feet Special Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 14 / 28 4.2.4. SCANNING PROCEDURE The DASY5 installation includes predefined files with recommended procedures for measurements and validation. They are read-only document files and destined as fully defined but unmeasured masks. All test positions (head or body-worn) are tested with the same configuration of test steps differing only in the grid definition for the different test positions. The “reference” and “drift” measurements are located at the beginning and end of the batch process. They measure the field drift at one single point in the liquid over the complete procedure. The indicated drift is mainly the variation of the DUT’s output power and should vary max. ± 5 %. The “surface check” measurement tests the optical surface detection system of the DASY5 system by repeatedly detecting the surface with the optical and mechanical surface detector and comparing the results. The output gives the detecting heights of both systems, the difference between the two systems and the standard deviation of the detection repeatability. Air bubbles or refraction in the liquid due to separation of the sugar-water mixture gives poor repeatability (above ± 0.1mm). To prevent wrong results tests are only executed when the liquid is free of air bubbles. The difference between the optical surface detection and the actual surface depends on the probe and is specified with each probe. (It does not depend on the surface reflectivity or the probe angle to the surface within ± 30°.) Area Scan The “area scan” measures the SAR above the DUT or verification dipole on a parallel plane to the surface. It is used to locate the approximate location of the peak SAR with 2D spline interpolation. The robot performs a stepped movement along one grid axis while the local electrical field strength is measured by the probe. The probe is touching the surface of the SAM during acquisition of measurement values. The standard scan uses large grid spacing for faster measurement. Standard grid spacing for head measurements is 15 mm in x- and y- dimension(≤2GHz)，12 mm in x- and y- dimension(2-4 GHz) and 10mm in x- and y- dimension(4-6GHz). If a finer resolution is needed, the grid spacing can be reduced. Grid spacing and orientation have no influence on the SAR result. For special applications where the standard scan method does not find the peak SAR within the grid, e.g. mobile phones with flip cover, the grid can be adapted in orientation. Zoom Scan A “zoom scan” measures the field in a volume around the 2D peak SAR value acquired in the previous “coarse” scan. This is a fine grid with maximum scan spatial resolution: Δxzoom, ∆yzoom≤ 2GHz -≤8mm, 2-4GHz -≤5 mm and 4-6 GHz-≤4mm; ∆zzoom≤3GHz -≤5 mm, 3-4 GHz-≤4mm and 4-6GHz-≤2mm where the robot additionally moves the probe along the z-axis away from the bottom of the Phantom. DASY is also able to perform repeated zoom scans if more than 1 peak is found during area scan. In this document, the evaluated peak 1g and 10g averaged SAR values are shown in the 2D-graphics in Appendix B. Test results relevant for the specified standard (see chapter 1.4.)are shown in table form form in chapter 7.2. A Z-axis scan measures the total SAR value at the x-and y-position of the maximum SAR value found during the cube scan. The probe is moved away in z-direction from the bottom of the SAM phantom in 2 mm steps. This measurement shows the continuity of the liquid and can - depending in the field strength – also show the liquid depth. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 15 / 28 The following table summarizes the area scan and zoom scan resolutions per FCC KDB 865664D01: 4.2.5. SPATIAL PEAK SAR EVALUATION The spatial peak SAR - value for 1 and 10 g is evaluated after the Cube measurements have been done. The basis of the evaluation are the SAR values measured at the points of the fine cube grid consisting of 5 x 5 x 7 points( with 8mm horizontal resolution) or 7 x 7 x 7 points( with 5mm horizontal resolution) or 8 x 8 x 7 points( with 4mm horizontal resolution). The algorithm that finds the maximal averaged volume is separated into three different stages. The data between the dipole center of the probe and the surface of the phantom are extrapolated. This data cannot be measured since the center of the dipole is 2.7 mm away from the tip of the probe and the distance between the surface and the lowest measuring point is about 1 mm (see probe calibration sheet). The extrapolated data from a cube measurement can be visualized by selecting “Graph Evaluated”. The maximum interpolated value is searched with a straight-forward algorithm. Around this maximum the SAR - values averaged over the spatial volumes (1g or 10 g) are computed using the 3d-spline interpolation algorithm. If the volume cannot be evaluated (i.e., if a part of the grid was cut off by the boundary of the measurement area) the evaluation will be started on the corners of the bottom plane of the cube. All neighboring volumes are evaluated until no neighboring volume with a higher average value is found. Extrapolation The extrapolation is based on a least square algorithm [W. Gander, Computermathematik,p.168-180]. Through the points in the first 3 cm along the z-axis, polynomials of order four are calculated. These polynomials are then used to evaluate the points between the surface and the probe tip. The points, calculated from the surface, have a distance of 1 mm from each other. Interpolation The interpolation of the points is done with a 3d-Spline. The 3d-Spline is composed of three one-dimensional splines with the "Not a knot"-condition [W. Gander, Computer mathematik, p.141-150] (x, y and z -direction) [Numerical Recipes in C, Second Edition, p.123ff ]. Volume Averaging At First the size of the cube is calculated. Then the volume is integrated with the trapezoidal algorithm. 8000 points (20x20x20) are interpolated to calculate the average. Advanced Extrapolation DASY5 uses the advanced extrapolation option which is able to compansate boundary effects on E-field probes. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 16 / 28 4.2.6. DATA STORAGE AND EVALUATION 22.214.171.124 Data Storage The DASY5 software stores the acquired data from the data acquisition electronics as raw data (in microvolt readings from the probe sensors), together with all necessary software parameters for the data evaluation (probe calibration data, liquid parameters and device frequency and modulation data) in measurement files with the extension “.DAE4”. The software evaluates the desired unit and format for output each time the data is visualized or exported. This allows verification of the complete software setup even after the measurement and allows correction of incorrect parameter settings. For example, if a measurement has been performed with a wrong crest factor parameter in the device setup, the parameter can be corrected afterwards and the data can be re-evaluated. The measured data can be visualized or exported in different units or formats, depending on the selected probe type ([V/m], [A/m], [°C], [mW/g], [mW/cm²], [dBrel], etc.). Some of these units are not available in certain situations or show meaningless results, e.g., a SAR output in a lossless media will always be zero. Raw data can also be exported to perform the evaluation with other software packages. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 17 / 28 4.2.7. Data Evaluation by SEMCAD The SEMCAD software automatically executes the following procedures to calculate the field units from the microvolt readings at the probe connector. The parameters used in the evaluation are stored in the configuration modules of the software: Probe parameters: Device parameters: Media parameters: Sensitivity Normi, ai0, ai1, ai2 Conversion factor ConvFi Diode compression point Dcpi Frequency Crest factor cf Conductivity ・ Density ・ These parameters must be set correctly in the software. They can be found in the component documents or they can be imported into the software from the configuration files issued for the DASY5 components. In the direct measuring mode of the multi meter option, the parameters of the actual system setup are used. In the scan visualization and export modes, the parameters stored in the corresponding document files are used. The first step of the evaluation is a linearization of the filtered input signal to account for the compression characteristics of the detector diode. The compensation depends on the input signal, the diode type and the DC-transmission factor from the diode to the evaluation electronics. If the exciting field is pulsed, the crest factor of the signal must be known to correctly compensate for peak power. The formula for each channel can be given as: Vi = Ui + Ui2 · cf / dcpi With Vi = compensated signal of channel i Ui = input signal of channel i cf = crest factor of exciting field dcpi = diode compression point Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 ( i = x, y, z ) ( i = x, y, z ) (DASY parameter) (DASY parameter) 18 / 28 From the compensated input signals the primary field data for each channel can be evaluated: E-field probes: Ei = ( Vi / Normi · ConvF )1/2 H-field probes: Hi With = ( Vi )1/2 · ( ai0 + ai1 f + ai2f2 ) / f Vi = compensated signal of channel i Normi = sensor sensitivity of channel i ( i = x, y, z ) ( i = x, y, z ) [mV/(V/m) ] for E-field Probes ConvF = sensitivity enhancement in solution aij = sensor sensitivity factors for H-field probes f = carrier frequency [GHz] Ei = electric field strength of channel i in V/m Hi = magnetic field strength of channel i in A/m The RSS value of the field components gives the total field strength (Hermitian magnitude): Etot = (EX2+ EY2+ EZ2)1/2 The primary field data are used to calculate the derived field units. SAR = (Etot) 2 · σ / (ρ· 1000) With SAR = local specific absorption rate in mW/g Etot = total field strength in V/m = conductivity in [mho/m] or [Siemens/m] = equivalent tissue density in g/cm Note that the density is normally set to 1 (or 1.06), to account for actual brain density rather than the density of the simulation liquid. The power flow density is calculated assuming the excitation field to be a free space field. Ppwe = Etot2 / 3770 or Ppwe = Htot2 · 37.7 With Ppwe = equivalent power density of a plane wave in mW/cm2 Etot = total field strength in V/m Htot = total magnetic field strength in A/m Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 19 / 28 5.. SYSTEM VERIFICATION PROCEDURE 5.1. TISSUE VERIFICATION The simulating liquids should be checked at the beginning of a series of SAR measurements to determine of the dielectic parameter are within the tolerances of the specified target values. The measured conductivity and relative permittivity should be within ± 5% of the target values. The following materials are used for producing the tissue-equivalent materials. Tissue Type Bactericide DGBE HEC NaCl Body 2450 Head 2450 31.4 45.0 0.1 0.1 Sucrose Triton X-100 Water Diethylene Glycol Monohexylether 68.5 54.9 Salt: 99+% Pure Sodium Chloride; Sugar: 98+% Pure Sucrose; Water: De-ionized, 16M + resistivity HEC: Hydroxyethyl Cellulose; DGBE: 99+% Di(ethylene glycol) butyl ether,[2-(2-butoxyethoxy)ethanol] Triton X-100(ultra pure): Polyethylene glycol mono [4-(1,1,3,3-tetramethylbutyl)phenyl]ether Tissue Verification Tissue Frequency Type (MHz) Body Head 2450 2450 Liquid Temp. Targeted Targeted Deviation Deviation Conductivity Permittivity (℃) 21.9 21.8 Conductivity Permittivity Conductivity Permittivity (σ) 1.944 1.833 (εr) 51.013 40.018 (σ) (εr) (σ) (%) (εr) (%) 1.95 1.80 52.7 39.2 -0.31 1.83 -3.20 2.09 Date Jul. 09, 2018 Jul. 09, 2018 Note: 1) The dielectric parameters of the tissue-equivalent liquid should be measured under similar ambient conditions and within 2 °C of the conditions expected during the SAR evaluation to satisfy protocol requirements. 2) KDB 865664 was ensured to be applied for probe calibration frequencies greater than or equal to 50MHz of the EUT frequencies. 3) The above measured tissue parameters were used in the DASY software to perform interpolation via the DASY software to determine actual dielectric parameters at the test frequencies. The SAR test plots may slightly differ from the table above since the DASY rounds to three significant digits. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 20 / 28 5.2. SYSTEM CHECK The system check is performed for verifying the accuracy of the complete measurement system and performance of the software. The system check is performed with tissue equivalent material according to IEEE P1528 (described above). The following table shows system check results for all frequency bands and tissue liquids used during the tests. System Check Body Head Date Jul. 09, 2018 Jul. 09, 2018 Frequency (MHz) 2450 2450 Targeted Measured normalized SAR-1g SAR-1g SAR-1g (W/kg) (W/kg) (W/kg) 51.70 53.50 13.20 13.20 52.80 52.80 Deviation Dipole (%) S/N 2.13 -1.31 973 973 5.3. SYSTEM CHECK PROCEDURE The system check is performed by using a system check dipole which is positioned parallel to the planar part of the SAM phantom at the reference point. The distance of the dipole to the SAM phantom is determined by a plexiglass spacer. The dipole is connected to the signal source consisting of signal generator and amplifier via a directional coupler, N-connector cable and adaption to SMA. It is fed with a power of 250 mW(below 5GHz) or 100mW(above 5GHz). To adjust this power a power meter is used. The power sensor is connected to the cable before the system check to measure the power at this point and do adjustments at the signal generator. At the outputs of the directional coupler both return loss as well as forward power are controlled during the system check to make sure that emitted power at the dipole is kept constant. This can also be checked by the power drift measurement after the test. System check results have to be equal or near the values determined during dipole calibration (target SAR in table above) with the relevant liquids and test system (±10 %). Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 21 / 28 6.. SAR MEASUREMENT VARIABILITY AND UNCERTAINTY 6.1. 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. The 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. 1) Repeated measurement is not required when the original highest measured SAR is < 0.80 W/kg; steps 2) through 4) do not apply. 2) When the original highest measured SAR is ≥ 0.80 W/kg, repeat that measurement once. 3) Perform a second repeated measurement only if 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 (~ 10% from the 1-g SAR limit). 4) Perform a third repeated measurement only if the original, first or second repeated measurement is ≥1.5 W/kg and the ratio of largest to smallest SAR for the original, first and second repeated measurements is > 1.20. The same procedures should be adapted for measurements according to extremity and occupational exposure limits by applying a factor of 2.5 for extremity exposure and a factor of 5 for occupational exposure to the corresponding SAR thresholds. The detailed repeated measurement results are shown in Section 8.2. 7.. OPERATIONAL CONDITIONS DURING TEST 7.1. SAR TEST CONFIGURATION 7.1.1. BT TEST CONFIGURATION For BT SAR testing, BT engineering testing software installed on the DUT can provide continuous transmitting RF signal. Mode Duty cycle Crest factor Bluetooth 100% For BT SAR testing, a communication link is set up with the test mode software for BT mode test. During the test, at the each test frequency channel, the EUT is operated at the RF continuous emission mode. The RF signal utilized in SAR measurement has 100% duty cycle and its crest factor is 1. The test procedures in KDB 248227 D01 are applied. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 22 / 28 7.2 TEST POSITION The location of the antenna inside EUT is as below. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 23 / 28 8.. TEST RESULT 8.1. CONDUCTED POWER RESULTS 8.1.1. CONDUCTED POWER MEASUREMENTS OF BT Average Conducted Power (dBm) BT Tune Up CH0 CH39 CH78 DH5 13 11.67 11.41 12.67 3DH5 6.21 6.71 7.54 BT Tune Up BLE 19 Average Conducted Power (dBm) CH0 CH19 CH39 17.51 18.66 18.60 Note: 1) The conducted power of BT is measured with RMS detector. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 24 / 28 8.2. SAR TEST RESULTS General Notes: 1) Per KDB447498 D01, all measurement SAR results are scaled to the maximum tune-up tolerance limit to demonstrate compliant. 2) Per KDB447498 D01, testing of other required channels within the operating mode of a frequency band is not required when the reported 1-g or 10-g SAR for the mid-band or highest output power channel is:≤0.8 W/kg or 2.0 W/kg, for 1-g or 10-g respectively, when the transmission band is≤100 MHz. When the maximum output power variation across the required test channels is > ½ dB, instead of the middle channel, the highest output power channel must be used. 3) Per KDB865664 D01,for each frequency band, repeated SAR measurement is required only when the measured SAR is ≥0.8W/kg; if the deviation among the repeated measurement is ≤ 20%,and the measured SAR <1.45W/kg, only one repeated measurement is required. 4) Per KDB865664 D02, SAR plot is only required for the highest measured SAR in each exposure configuration, wireless mode and frequency band combination; Plots are also required when the measured SAR is > 1.5 W/kg, or > 7.0 W/kg for occupational exposure. The published RF exposure KDB procedures may require additional plots; for example, to support SAR to peak location separation ratio test exclusion and/or volume scan post-processing. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 25 / 28 8.2.1. SAR MEASUREMENT RESULT Body SAR test results of bluetooth_LE Separation Maximum Conducted Power SAR SAR Scaling Scaled Distance Tune-up Power Drift 1g 10g Factor 1g SAR (cm) (dBm) (dBm) Front Face 19 18.66 0.16 0.793 0.373 1.08 0.86 Rear Face 19 18.66 0.11 0.576 0.282 1.08 0.62 Left Side 19 18.66 0.06 0.114 0.055 1.08 0.12 Right Side 19 18.66 -0.08 0.063 0.033 1.08 0.07 Top Side 19 18.66 0.05 0.821 0.385 1.08 0.89 Bottom Side 19 18.66 0.05 0.076 0.039 1.08 0.08 Top Side 19 17.51 0.14 0.513 0.242 1.41 0.72 Test No. Band Channel Test Position Bluetooth_LE Bluetooth_LE Bluetooth_LE Bluetooth_LE Bluetooth_LE Bluetooth_LE Bluetooth_LE 19 19 19 19 19 19 Bluetooth_LE 39 Top Side 19 18.60 0.11 0.9 0.42 1.10 0.99 17 Bluetooth_LE repeated 39 Top Side 19 18.60 0.09 0.872 0.39 1.10 0.96 Note: The test use MSL liquid. Test No. 10 11 12 13 14 15 16 18 repeated Band Channel Bluetooth_LE Bluetooth_LE Bluetooth_LE Bluetooth_LE Bluetooth_LE Bluetooth_LE Bluetooth_LE Bluetooth_LE 19 19 19 19 19 19 39 Bluetooth_LE 39 Separation Maximum Conducted Power SAR SAR Scaling Scaled Distance Tune-up Power Drift 1g 10g Factor 1g SAR (cm) (dBm) (dBm) Front Face 19 18.66 0.04 0.864 0.4 1.08 0.93 Rear Face 19 18.66 0.08 0.674 0.323 1.08 0.73 Left Side 19 18.66 -0.05 0.129 0.061 1.08 0.14 Right Side 19 18.66 -0.16 0.076 0.038 1.08 0.08 Top Side 19 18.66 0.11 0.91 0.385 1.08 0.98 Bottom Side 19 18.66 0.12 0.079 0.036 1.08 0.09 Front Face 19 17.51 0.13 0.57 0.264 1.41 0.80 1.07 Top Side 19 18.60 0.1 0.971 0.445 1.10 Test Position Top Side 19 18.60 0.05 0.966 0.431 1.10 1.06 Note: The test use HSL liquid. Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 26 / 28 APPENDIX 1. Test Layout Specific Absorption Rate Test Layout Liquid depth in the flat Phantom (≥15cm depth) MSL(2450MHz) Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 HSL(2450MHz) 27 / 28 Appendix A. SAR Plots of System Verification (Pls See Appendix A.) Appendix B. SAR Plots of SAR Measurement (Pls See Appendix B.) Appendix C. Calibration Certificate for Probe and Dipole (Pls See Appendix C.) Appendix D. Photographs of the Test Set-Up (Pls See Appendix D.) End Report No.: BTL-FCC SAR-1-1803047 Report Format Version: 0.0.1 28 / 28
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