Index of /BLACKVIEW/BG/Tablets/Tab 8 WIFI/
Product Name︰ Tablet PC. Trademark︰ Blackview, OSCAL. Model Name︰ Tab 8 WiFi. Family Model︰ Tab 8 Kids, Pad 70. Report No.︰ STR230303001007E. Prepared for.
Page 1 of 56 Report No.: STR230303001007E CE SAR EVALUATION REPORT In accordance with the requirements of EN50566, EN62209-2, EN62479 and COUNCIL RECOMMENDATION 1999/519/EC Product Name Tablet PC Trademark Blackview, OSCAL Model Name Tab 8 WiFi Family Model Tab 8 Kids, Pad 70 Report No. STR230303001007E Prepared for DOKE COMMUNICATION (HK) LIMITED RM 1902 EASEY COMM BLDG 253-261 HENNESSY ROAD WANCHAI HK CHINA Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street, Bao'an District, Shenzhen 518126 P.R.China. Tel.: 400-800-6106, 0755-2320 0050, 0755-2320 0090 Website: http://www.ntek.org.cn Page 2 of 56 Report No.: STR230303001007E TEST RESULT CERTIFICATION Applicant's name ...............D.. O: KE COMMUNICATION (HK) LIMITED RM 1902 EASEY COMM BLDG 253-261 HENNESSY ROAD WANCHAI HK Address .................................. : CHINA Manufacturer's Name.........S..h: enzhen DOKE Electronic Co.,Ltd 801, Building3, 7th Industrial Zone, Yulv Community, Yutang Road, Guangming Address .................................. : District, Shenzhen, China. Product description Product name.......................T..a:blet PC Trademark ..........................B..l:ackview, OSCAL Mreofedreelnacned/.o..r..t.y..p..e..................T..a:b 8 WiFi Family Model........................T..a:b 8 Kids, Pad 70 EN 50566:2017; Standards............................E..N: 62209-2:2010; EN 62479:2010; This device described above has been tested by Shenzhen NTEK. In accordance with the measurement methods and procedures specified in EN62209. Testing has shown that this device is capable of compliance with localized specific absorption rate (SAR) specified in COUNCIL 1999/519/EC. The test results in this report apply only to the tested sample of the stated device/equipment. Other similar device/equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. This report shall not be reproduced except in full, without the written approval of Shenzhen NTEK, this document may be altered or revised by Shenzhen NTEK, personal only, and shall be noted in the revision of the document. Test Sample Number .......................T..2..3. :0303001R001 Date of Test............................................ Date (s) of performance of tests ........M...a..r.: 24, 2023 Date of Issue .....................................A..p..r..:13, 2023 Test Result .........................................P..a..s. :s Prepared By (Test Engineer) : Approved By (Lab Manager) : (Jacob Chen) (Alex Li) REV. Rev.1.0 Page 3 of 56 Report No.: STR230303001007E Revision History DESCRIPTION Initial Test Report Release ISSUED DATE Apr. 13, 2023 REMARK Jacob Chen Page 4 of 56 Report No.: STR230303001007E TABLE OF CONTENTS 1. General Information ............................................................................................5 1.1. RF exposure limits....................................................................................5 1.2. Statement of Compliance ........................................................................6 1.3. EUT Description .......................................................................................6 1.4. Test specification(s) ..................................................................................7 1.5. Ambient Condition...................................................................................7 2. SAR Measurement System ...................................................................................8 2.1. SATIMO SAR Measurement Set-up Diagram ............................................8 2.2. Robot .......................................................................................................9 2.3. E-Field Probe..........................................................................................10 2.3.1. E-Field Probe Calibration .................................................................10 2.4. SAM phantoms ......................................................................................11 2.4.1. Technical Data ..................................................................................12 2.5. Device Holder ........................................................................................13 2.6. Test Equipment List ................................................................................14 3. SAR Measurement Procedures ..........................................................................16 3.1. Power Reference ...................................................................................16 3.2. Area scan & Zoom scan..........................................................................16 3.3. Description of interpolation/extrapolation scheme ..............................17 3.4. Volumetric Scan.....................................................................................17 3.5. Power Drift ............................................................................................17 4. System Verification Procedure ..........................................................................18 4.1. Tissue Verification .................................................................................18 4.1.1. Tissue Dielectric Parameter Check Results ......................................19 4.2. System Verification Procedure ..............................................................20 4.2.1. System Verification Results ..............................................................21 5. SAR Measurement Uncertainty .........................................................................22 6. RF Exposure Positions ........................................................................................24 6.1. Body-supported device..........................................................................24 7. RF Output Power ...............................................................................................25 7.1. WLAN & Bluetooth Output Power .........................................................25 8. SAR Results ........................................................................................................27 8.1. SAR measurement resu lts .....................................................................27 8.1.1. SAR measurement Result of WLAN 2.4G .........................................27 8.2. Simultaneous Transmission Analysis .....................................................28 9. Appendix A. Photo documentation....................................................................28 10. Appendix B. System Check Plots.....................................................................30 11. Appendix C. Plots of High SAR Measurement.................................................33 12. Appendix D. Calibration Certificate ................................................................36 Page 5 of 56 Report No.: STR230303001007E 1. General Information 1.1. RF exposure limits (A).Limits for Occupational/Controlled Exposure (W/kg) Whole-Body Partial-Body Hands, Wrists, Feet and Ankles 0.4 10.0 20.0 (B).Limits for General Population/Uncontrolled Exposure (W/kg) Whole-Body Partial-Body Hands, Wrists, Feet and Ankles 0.08 2.0 4.0 NOTE: Whole-Body SAR is averaged over the entire body, partial-body SAR is averaged over any 10 gram of tissue defined as a tissue volume in the shape of a cube. SAR for hands, wrists, feet and ankles is averaged over any 10 grams of tissue defined as a tissue volume in the shape of a cube. Occupational/Controlled Environments: Are defined as locations where there is exposure that may be incurred by people who are aware of the potential for exposure, (i.e. as a result of employment or occupation). General Population/Uncontrolled Environments: Are defined as locations where there is the exposure of individuals who have no knowledge or control of their exposure. NOTE TRUNK LIMIT 2.0 W/kg AND MEMBER LIMIT 4.0 W/kg APPLIED TO THIS EUT Page 6 of 56 Report No.: STR230303001007E 1.2. Statement of Compliance The maximum results of Specific Absorption Rate (SAR) found during testing for TAB 12 PRO are as follows. 10-g Body 10-g Member DAS (See note3) RF Exposure Conditions (Separation distance of 5mm) (Separation distance of 0mm) 0.918 1.441 NOTE: 1. The Max Simultaneous Tx is calculated based on the same configuration and test position. 2. This device is in compliance with Specific Absorption Rate (SAR) for general population / uncontrolled exposure limits (2.0 W/kg for body, 4.0 W/kg for member) specified in COUNCIL RECOMMENDATION 1999/519/EC, and had been tested in accordance with the measurement methods and procedures specified in EN 62209-2:2010. 3. The member DAS, It is only an assessment required by the ANFR (Sell to France). 1.3. EUT Description Device Information Product Name Trademark Model Name Family Model Model Difference Device Phase Exposure Category Antenna Type Battery Information Hardware Version Software Version Device Operating Configurations Supporting Mode(s) Test Modulation Device Class Operating Frequency Range(s) Tablet PC Blackview, OSCAL Tab 8 WiFi Tab 8 Kids, Pad 70 All the model are the same circuit and RF module,except the Trade Mark. Identical Prototype General population / Uncontrolled environment PIFA Antenna DC 3.8V, 6580mAh R863T-RK3566-DK-V1.0 Tab_8_WiFi_EEA_S863T_V1.0 Tab_8_Kids_EEA_S863T_V1.0 PAD_70_EEA_S863T_V1.0 WLAN 2.4G/5G, Bluetooth WLAN(DSSS/OFDM), Bluetooth(GFSK, /4-DQPSK, 8DPSK) , B Band Tx (MHz) Rx (MHz) WLAN 2.4G 2412-2472 WLAN 5.2G 5180-5240 WLAN 5.8G 5745-5825 Bluetooth 2402-2480 Page 7 of 56 Report No.: STR230303001007E 1.4. Test specification(s) Product standard to demonstrate the compliance of wireless communication EN 50566:2017 devices with the basic restrictions and exposure limit values related to human exposure to electromagnetic fields in the frequency range from 30 MHz to 6 GHz: hand-held and body mounted devices in close proximity to the human body Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices Human models, instrumentation, and EN 62209-2:2010 procedures Part 2: Procedure to determine the Specific Absorption Rate (SAR) in the head and body for 30MHz to 6GHz Handheld and Body-Mounted Devices used in close proximity to the body Assessment of the compliance of low-power electronic and electrical equipment EN 62479:2010 with the restrictions related to human exposure to electromagnetic fields(10 MHz to 300 GHz) 1.5. Ambient Condition Ambient temperature Relative Humidity 20°C 24°C 30% 70% Page 8 of 56 2. SAR Measurement System 2.1. SATIMO SAR Measurement Set-up Diagram Report No.: STR230303001007E These measurements were performed with the automated near-field scanning system OPENSAR from SATIMO. The system is based on a high precision robot (working range: 901 mm), which positions the probes with a positional repeatability of better than ±0.03 mm. The SAR measurements were conducted with dosimetric probe (manufactured by SATIMO), designed in the classical triangular configuration and optimized for dosimetric evaluation. The first step of the field measurement is the evaluation of the voltages induced on the probe by the device under test. Probe diode detectors are nonlinear. Below the diode compression point, the output voltage is proportional to the square of the applied E-field; above the diode compression point, it is linear to the applied E-field. The compression point depends on the diode, and a calibration procedure is necessary for each sensor of the probe. The Keithley multimeter reads the voltage of each sensor and send these three values to the PC. The corresponding E field value is calculated using the probe calibration factors, which are stored in the working directory. This evaluation includes linearization of the diode characteristics. The field calculation is done separately for each sensor. Each component of the E field is displayed on the ''Dipole Area Scan Interface'' and the total E field is displayed on the ''3D Interface'' Page 9 of 56 Report No.: STR230303001007E 2.2. Robot The SATIMO SAR system uses the high precision robots from KUKA. For the 6-axis controller system, the robot controller version (KUKA) from KUKA is used. The KUKA robot series have many features that are important for our application: · High precision (repeatability ±0.03 mm) · High reliability (industrial design) · Jerk-free straight movements · Low ELF interference (the closed metallic construction shields against motor control fields) Page 10 of 56 Report No.: STR230303001007E 2.3. E-Field Probe This E-field detection probe is composed of three orthogonal dipoles linked to special Schottky diodes with low detection thresholds. The probe allows the measurement of electric fields in liquids such as the one defined in the IEEE and CENELEC standards. For the measurements the Specific Dosimetric E-Field Probe SN 08/16 EPGO287 with following specifications is used - Dynamic range: 0.01-100 W/kg - Tip Diameter : 2.5 mm - Distance between probe tip and sensor center: 1 mm - Distance between sensor center and the inner phantom surface: 2 mm (repeatability better than ±1 mm). - Probe linearity: ±0.08 dB - Axial isotropy: ±0.01 dB - Hemispherical Isotropy: ±0.01 dB - Calibration range: 650MHz to 5900MHz for head & body simulating liquid. - Lower detection limit: 8mW/kg Angle between probe axis (evaluation axis) and surface normal line: less than 30°. 2.3.1. E-Field Probe Calibration Each probe needs to be calibrated according to a dosimetric assessment procedure with accuracy better than ±10%. The spherical isotropy shall be evaluated and within ±0.25dB. The sensitivity parameters (Norm X, Norm Y, and Norm Z), the diode compression parameter (DCP) and the conversion factor (Conv F) of the probe are tested. The calibration data can be referred to appendix D of this report. 2.4. SAM phantoms Photo of SAM phantom SN 16/15 SAM119 Page 11 of 56 Report No.: STR230303001007E The SAM phantom is used to measure the SAR relative to people exposed to electro-magnetic field radiated by mobile phones. Page 12 of 56 Report No.: STR230303001007E 2.4.1. Technical Data Serial Number SN 16/15 SAM119 Shell thickness 2 mm ±0.2 mm Filling volume Dimensions Length:1000 mm 27 liters Width:500 mm Height:200 mm Positionner Material Permittivity Loss Tangent Gelcoat with 3.4 0.02 fiberglass Serial Number Left Head(mm) Right Head(mm) Flat Part(mm) 2 2.02 2 2.08 1 2.09 3 2.05 3 2.06 2 2.06 4 2.07 4 2.07 3 2.08 SN 16/15 SAM119 5 2.08 5 6 2.05 6 2.08 4 2.10 2.07 5 2.10 7 2.05 7 2.05 6 2.07 8 2.07 8 2.06 7 2.07 9 2.08 9 2.06 - - The test, based on ultrasonic system, allows measuring the thickness with an accuracy of 10 m. Page 13 of 56 Report No.: STR230303001007E 2.5. Device Holder The positioning system allows obtaining cheek and tilting position with a very good accuracy. In compliance with CENELEC, the tilt angle uncertainty is lower than 1 degree. Serial Number SN 16/15 MSH100 Holder Material Delrin Permittivity 3.7 Loss Tangent 0.005 Page 14 of 56 Report No.: STR230303001007E 2.6. Test Equipment List This table gives a complete overview of the SAR measurement equipment. Devices used during the test described are marked Manufacturer Name of Equipment Type/Model Serial Number MVG E FIELD PROBE SSE2 SN 08/16 EPGO287 MVG MVG MVG MVG MVG MVG MVG MVG MVG 750 MHz Dipole SID750 835 MHz Dipole SID835 900 MHz Dipole SID900 1800 MHz Dipole SID1800 1900 MHz Dipole SID1900 2000 MHz Dipole SID2000 2300 MHz Dipole SID2300 2450 MHz Dipole SID2450 2600 MHz Dipole SID2600 SN 03/15 DIP 0G750-355 SN 03/15 DIP 0G835-347 SN 03/15 DIP 0G900-348 SN 03/15 DIP 1G800-349 SN 03/15 DIP 1G900-350 SN 03/15 DIP 2G000-351 SN 03/16 DIP 2G300-358 SN 03/15 DIP 2G450-352 SN 03/15 DIP 2G600-356 MVG 5000 MHz Dipole SWG5500 SN 13/14 WGA 33 MVG MVG KEITHLEY R&S R&S Liquid measurement Kit Power Amplifier Millivoltmeter Universal radio communication tester Wideband radio communication tester SCLMP SN 21/15 OCPG 72 N.A 2000 AMPLISAR_28/14_003 4072790 CMU200 117858 CMW500 103917 HP Network Analyzer 8753D 3410J01136 Calibration Last Cal. Due Date Jan. 10, Jan. 09, 2023 2024 Mar. 01, Feb. 28, 2021 2024 Mar. 01, Feb. 28, 2021 2024 Mar. 01, Feb. 28, 2021 2024 Mar. 01, Feb. 28, 2021 2024 Mar. 01, Feb. 28, 2021 2024 Mar. 01, Feb. 28, 2021 2024 Mar. 01, Feb. 28, 2021 2024 Mar. 01, Feb. 28, 2021 2024 Mar. 01, Feb. 28, 2021 2024 Mar. 01, Feb. 28, 2021 2024 NCR NCR NCR NCR NCR NCR Jun. 17, Jun. 16, 2022 2023 Jun. 17, Jun. 16, 2022 2023 Jun. 17, Jun. 16, 2022 2023 Page 15 of 56 Report No.: STR230303001007E Agilent Agilent MXG Vector Signal Generator N5182A Power meter E4419B Agilent Power sensor E9301A Agilent MCLI/USA Power sensor Directional Coupler E9301A CB11-20 MY47070317 MY45102538 MY41495644 US39212148 0D2L51502 Jun. 16, 2022 Jun. 17, 2022 Jun. 17, 2022 Jun. 17, 2022 Jul. 17, 2020 Jun. 15, 2023 Jun. 16, 2023 Jun. 16, 2023 Jun. 16, 2023 Jul. 16, 2023 Page 16 of 56 Report No.: STR230303001007E 3. SAR 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. (e) Set scan area, grid size and other setting on the OPENSAR software. (f) Measure SAR transmitting at the middle channel for all applicable exposure positions. (g) Identify the exposure position and device configuration resulting the highest SAR (h) Measure SAR at the lowest and highest channels at the worst exposure position and device configuration. According to the test standard, the recommended procedure for assessing the peak spatial-average SAR value consists of the following steps: (a) Power reference measurement (b) Area scan (c) Zoom scan (d) Power drift measurement 3.1. Power Reference The Power Reference Measurement and Power Drift Measurements are for monitoring the power drift of the device under test in the batch process. The minimum distance of probe sensors to surface determines the closest measurement point to phantom surface. This distance cannot be smaller than the distance of sensor calibration points to probe tip as defined in the probe properties. 3.2. Area scan & Zoom scan The area scan is a 2D scan to find the hot spot location on the DUT. The zoom scan is a 3D scan above the hot spot to calculate the 1g and 10g SAR value. Measurement of the SAR distribution with a grid of 8 to 16 mm * 8 to 16 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. 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. From the scanned SAR distribution, identify the position of the maximum SAR value, in addition identify the positions of any local maxima with SAR values within 2 dB of the maximum value that will not be within the zoom scan of other peaks; additional peaks shall be measured only when the primary peak is within 2 dB of the SAR compliance limit (e.g., 1 W/kg for 1,6 W/kg 1 g limit, or 1,26 W/kg for 2 W/kg, 10 g limit). Page 17 of 56 Report No.: STR230303001007E 3.3. Description of interpolation/extrapolation scheme The local SAR inside the phantom is measured using small dipole sensing elements inside a probe body. The probe tip must not be in contact with the phantom surface in order to minimise measurements errors, but the highest local SAR will occur at the surface of the phantom. An extrapolation is using to determinate this highest local SAR values. The extrapolation is based on a fourth-order least-square polynomial fit of measured data. The local SAR value is then extrapolated from the liquid surface with a 1 mm step. The measurements have to be performed over a limited time (due to the duration of the battery) so the step of measurement is high. It could vary between 5 and 8 mm. To obtain an accurate assessment of the maximum SAR averaged over 10 grams and 1 gram requires a very fine resolution in the three dimensional scanned data array. 3.4. Volumetric Scan The volumetric scan consists to a full 3D scan over a specific area. This 3D scan is useful form multi Tx SAR measurement. Indeed, it is possible with OpenSAR to add, point by point, several volumetric scan to calculate the SAR value of the combined measurement as it is define in the standard IEEE1528 and IEC62209. 3.5. Power Drift All SAR testing is under the EUT install full charged battery and transmit maximum output power. In OpenSAR measurement software, the power reference measurement and power drift measurement procedures are used for monitoring the power drift of EUT during SAR test. Both these procedures measure the field at a specified reference position before and after the SAR testing. The software will calculate the field difference in V/m. If the power drifts more than ±5%, the SAR will be retested. Page 18 of 56 Report No.: STR230303001007E 4. System Verification Procedure 4.1. Tissue Verification The following tissue formulations are provided for reference only as some of the parameters have not been thoroughly verified. The composition of ingredients may be modified accordingly to achieve the desired target tissue parameters required for routine SAR evaluation. Ingredients (% of weight) Head Tissue Frequency Band (MHz) 750 835 900 1800 1900 2000 2450 2600 5000 Water 34.40 34.40 34.40 55.36 55.36 71.88 71.88 71.88 65.53 NaCl 0.79 0.79 0.79 0.35 0.35 0.16 0.16 0.16 0.00 1,2-Propanediol 64.81 64.81 64.81 0.00 0.00 0.00 0.00 0.00 0.00 Triton X-100 0.00 0.00 0.00 30.45 30.45 19.97 19.97 19.97 17.24 DGBE 0.00 0.00 0.00 13.84 13.84 7.99 7.99 7.99 0.00 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 depth from the ear reference point (ERP) of the phantom to the liquid top surface is larger than 15 cm. Photo of Liquid depth for Head Position Photo of Liquid depth for Body Position Page 19 of 56 Report No.: STR230303001007E 4.1.1. Tissue Dielectric Parameter Check Results The simulating liquids should be checked at the beginning of a series of SAR measurements to determine of the dielectric parameter are within the tolerances of the specified target values. The measured conductivity and relative permittivity should be within ±5% of the target values. Tissue Type Measured Frequency (MHz) Target Tissue r (±5%) (S/m) (±5%) Measured Tissue r (S/m) Liquid Temp. Test Date Head 2450 2450 39.20 1.80 38.49 (37.24~41.16) (1.71~1.89) 1.81 21.4 °C Mar. 24, 2023 NOTE: 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. Page 20 of 56 Report No.: STR230303001007E 4.2. System Verification Procedure The system verification is performed for verifying the accuracy of the complete measurement system and performance of the software. 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 100mW (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 verification 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 verification 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 (result on plot). The system verification is shown as below picture: Page 21 of 56 Report No.: STR230303001007E 4.2.1. System Verification Results Comparing to the original SAR value provided by SATIMO, the verification data should be within its specification of ±10%. Below table shows the target SAR and measured SAR after normalized to 1W input power. The table below indicates the system performance verification can meet the variation criterion and the plots can be referred to Appendix B of this report. System Verification 2450MHz Target SAR (1W) (±10%) 1-g (W/Kg) 53.69 (48.33~59.05) 10-g (W/Kg) 23.94 (21.55~26.33) Measured SAR (Normalized to 1W) 1-g 10-g (W/Kg) (W/Kg) 54.57 25.74 Liquid Temp. 21.4 °C Test Date Mar. 24, 2023 Page 22 of 56 Report No.: STR230303001007E 5. SAR Measurement Uncertainty The following measurement uncertainty levels have been estimated for tests performed on the EUT as specified in IEEE 1528: 2003. This uncertainty represents an expanded uncertainty expressed at approximately the 95% confidence level using a coverage factor of k=2. Uncertainty Component Tol. Prob. Ci Ci 1 g Ui 10 g Ui Div. Vi (±%) Dist. (1 g) (10 g) (±%) (±%) Measurement System Probe Calibration 5.8 N 1 1 1 5.80 5.80 Axial Isotropy 3.5 R 3 0.97 0.97 1.98 1.98 Hemispherical Isotropy 5.9 R 3 0.28 0.28 0.96 0.96 Boundary Effect 1 R 3 1 1 0.58 0.58 Linearity 4.7 R 3 1 1 2.71 2.71 System Detection Limits 1 R 3 1 1 0.58 0.58 Modulation response 3 N 1 1 1 3.00 3.00 Readout Electronics 0.5 N 1 1 1 0.50 0.50 Response Time 0 R 3 1 1 0.00 0.00 Integration Time 1.4 R 3 1 1 0.81 0.81 RF Ambient Conditions - Noise 3 R 3 1 1 1.73 1.73 RF Ambient Conditions - Reflections 3 R 3 1 1 1.73 1.73 Probe Positioner Mechanical Tolerance 1.4 R 3 1 1 0.81 0.81 Probe Positioning with respect to Phantom 1.4 Shell R 3 1 1 0.81 0.81 Extrapolation, interpolation and Integration 2.3 Algorithms for Max. SAR Evaluation R 3 1 1 1.33 1.33 Test sample Related Test Sample Positioning 2.6 N 1 1 1 2.60 2.60 11 Device Holder Uncertainty 3 N 1 1 1 3.00 3.00 7 Output Power Variation - SAR drift measurement 5 R 3 1 1 2.89 2.89 SAR scaling 2 R 3 1 1 1.15 1.15 Phantom and Tissue Parameters Phantom Uncertainty (shape and thickness 4 tolerances) R 3 1 1 2.31 2.31 Uncertainty in SAR correction for deviation 2 (in permittivity and conductivity) N 1 1 0.84 2.00 1.68 Liquid Conductivity (temperature uncertainty) 2.5 N 1 0.78 0.71 1.95 1.78 Liquid conductivity - measurement uncertainty 1.59 N 1 0.23 0.26 0.37 0.41 99 Page 23 of 56 Report No.: STR230303001007E Liquid permittivity (temperature uncertainty) 2.5 N 1 0.78 0.71 1.95 1.78 Liquid permittivity - measurement uncertainty 1.65 N 1 0.23 0.26 0.38 0.43 99 Combined Standard Uncertainty RSS 10.19 10.02 Expanded Uncertainty (95% Confidence interval) k 20.38 20.04 Page 24 of 56 Report No.: STR230303001007E 6. RF Exposure Positions 6.1. Body-supported device The example in Figure 6.1) shows a Tablet PC form factor portable computer for which SAR should be separately assessed with a) each surface and b) the separation distances Positioned against the flat phantom that correspond to the intended use as specified by the manufacturer. If the intended use is not specified in the user instructions, the device shall be tested directly against the flat phantom in all usable orientations. Figure 6.1 Test positions for Body-supported device Page 25 of 56 Report No.: STR230303001007E 7. RF Output Power 7.1. WLAN & Bluetooth Output Power Mode Channel 1 Frequency (MHz) 2412 802.11b 7 13 2442 2472 1 2412 802.11g 7 13 2442 2472 1 802.11n 7 (HT20) 13 3 802.11n 7 (HT40) 11 1 802.11ax 20 7 13 3 802.11ax 40 7 11 2412 2442 2472 2422 2442 2462 2412 2442 2472 2422 2442 2462 NOTE: Power measurement results of WLAN 2.4G. Mode Channel Frequency (MHz) 36 802.11a 40 48 36 802.11n 40 HT20 48 802.11n 38 HT40 46 36 802.11ac 40 VHT20 48 802.11ac 38 VHT40 46 5180 5200 5240 5180 5200 5240 5190 5230 5180 5200 5240 5190 5230 Tune - up 13.50 13.50 13.50 10.50 10.50 10.50 8.50 8.50 8.50 7.50 7.50 7.50 8.00 8.00 8.00 8.00 8.00 8.00 Tune-up 8.00 8.00 8.00 8.00 8.00 8.00 7.50 7.50 8.00 8.00 8.00 7.50 7.50 Output Power (dBm) 12.61 13.26 13.30 10.18 10.07 10.14 8.11 8.14 8.25 7.28 7.00 7.21 7.55 7.65 7.76 7.09 7.09 7.55 Output Power (dBm) 7.65 7.23 6.79 7.84 7.55 7.10 7.22 6.87 7.95 7.62 7.19 7.12 6.88 Page 26 of 56 Report No.: STR230303001007E 802.11ac 42 5210 7.50 7.19 VHT80 36 5180 8.00 7.71 802.11ax 40 5200 8.00 7.34 20 48 5240 8.00 6.85 802.11ax 38 5190 7.50 7.48 40 46 5230 7.50 7.29 802.11ax 42 5210 8.00 7.55 80 NOTE: NOTE: Power measurement results of WLAN5.2G. Refer to EN 62479, the available power of this EUT is8.00dBm (6.31mW), the power is less than the low-power exclusion level defined in 4.2 (P max: 20mW), So WLAN5.2G stand-alone SAR is not required Mode Channel Frequency (MHz) Tune-up Output Power (dBm) 149 5745 8.00 7.50 802.11a 157 5785 8.00 7.41 165 5825 8.00 7.25 149 5745 8.00 7.53 802.11n 157 5785 8.00 7.33 HT20 165 5825 8.00 7.37 802.11n 151 5755 7.50 7.47 HT40 159 5795 7.50 6.77 149 5745 8.00 7.63 802.11ac 157 5785 8.00 7.40 VHT20 165 5825 8.00 7.37 802.11ac 151 5755 7.50 7.39 VHT40 159 5795 7.50 6.91 802.11ac 155 5775 7.50 7.44 VHT80 149 5745 7.50 7.20 802.11ax 157 5785 7.50 7.20 20 165 5825 7.50 7.30 802.11ax 151 5755 8.00 7.54 40 159 5795 8.00 7.05 802.11ax 155 5775 7.50 7.41 80 NOTE: NOTE: NOTE: Power measurement results of WLAN5.8G. Refer to EN 62479, the available power of this EUT is8.00dBm (6.31mW), the power is less than the low-power exclusion level defined in 4.2 (P max: 20mW), So WLAN5.8G stand-alone SAR is not required BR+EDR Page 27 of 56 Report No.: STR230303001007E Data Rates GFSK DH5 Pi/4 DQPSK DH5 8DPSK DH5 Tune - up 2.00 0.00 2.00 Output Power (dBm) 1.84 0.00 1.02 BLE1M Channel 0CH 19CH 39CH Tune - up -5.00 -3.00 -4.00 Output Power (dBm) -5.43 -3.93 -4.45 Channel Tune - up Output Power (dBm) BLE2M 0CH -5.00 -5.50 19CH -4.00 -4.07 39CH -4.00 -4.53 NOTE: Power measurement results of Bluetooth. Refer to EN 62479, the available power of this EUT is2.00dBm (1.58mW), the power is less than the low-power exclusion level defined in 4.2 (P max: 20mW), So Bluetooth stand-alone SAR is not required. 8. SAR Results 8.1. SAR measurement resu lts 8.1.1. SAR measurement Result of WLAN 2.4G Test Position Test channel /Freq. Front Side Back Side Left Side Right Side 7/2442 7/2442 7/2442 7/2442 Mode 802.11 b 802.11 b 802.11 b 802.11 b Separation distance (mm) 0 0 0 0 SAR Value (W/kg) 1-g 10-g Power Drift(%) Conducted Power (dBm) Tune-up Power (dBm) Scaled SAR 10-g (W/Kg) Extremity 1.708 0.786 -4.00 13.26 13.50 0.831 2.847 1.364 1.26 13.26 13.50 1.441 0.399 0.182 -0.70 13.26 13.50 0.192 0.911 0.423 1.49 13.26 13.50 0.447 Date 2023/3/24 2023/3/24 2023/3/24 2023/3/24 Top Side Bottom Side 7/2442 7/2442 802.11 b 802.11 b Back Side 7/2442 802.11 b Page 28 of 56 Report No.: STR230303001007E 0 2.050 0.963 0.35 13.26 13.50 1.018 2023/3/24 0 0.342 0.162 -3.17 13.26 Body with 5mm (Worst-case position for 0mm) 5 1.851 0.869 0.83 13.26 13.50 0.171 2023/3/24 13.50 0.918 2023/3/24 8.2. Simultaneous Transmission Analysis NO simultaneous transmissions are possible for this device of Bluetooth and 2.4G Wi-Fi 9. Appendix A. Photo documentation Test Positions Front Side (Separation distance of 0mm) Back Side (Separation distance of 0mm) Left Side (Separation distance of 0mm) Right Side (Separation distance of 0mm) Top Side (Separation distance of 0mm) Bottom Side (Separation distance of 0mm) Page 29 of 56 Report No.: STR230303001007E Back side N/A (Separation distance of 5mm) N/A Page 30 of 56 10. Appendix B. System Check Plots Table of contents MEASUREMENT 1 System Performance Check - 2450MHz Report No.: STR230303001007E Page 31 of 56 Report No.: STR230303001007E MEASUREMENT 1 Date of measurement: 24/3/2023 A. Experimental conditions. Area Scan ZoomScan Phantom Device Position Band Channels Signal ConvF dx=12mm dy=12mm, h= 5.00 mm 7x7x7,dx=5mm dy=5mm dz=5mm Validation plane Dipole CW2450 Middle CW (Crest factor: 1.0) 1.98 B. SAR Measurement Results Frequency (MHz) Relative permittivity (real part) Relative permittivity (imaginary part) Conductivity (S/m) Variation (%) 2450.000000 38.492976 13.330953 1.814491 -3.640000 SURFACE SAR VOLUME SAR Maximum location: X=0.00, Y=1.00 SAR Peak: 8.14 W/kg SAR 10g (W/Kg) 2.574231 SAR 1g (W/Kg) 5.457129 Page 32 of 56 Report No.: STR230303001007E Z (mm) SAR (W/Kg) 0.00 8.0342 4.00 5.0185 9.00 2.6979 14.00 1.4835 19.00 0.8306 24.00 0.4649 29.00 0.2619 3D screen shot Hot spot position Page 33 of 56 Report No.: STR230303001007E 11. Appendix C. Plots of High SAR Measurement Table of contents MEASUREMENT 1 WLAN 2.4G Extremity Page 34 of 56 Report No.: STR230303001007E MEASUREMENT 1 Date of measurement: 24/3/2023 A. Experimental conditions. Area Scan ZoomScan Phantom Device Position Band Channels Signal ConvF dx=12mm dy=12mm, h= 5.00 mm 7x7x7,dx=5mm dy=5mm dz=5mm Validation plane Body IEEE 802.11b ISM Middle IEEE802.11b (Crest factor: 1.0) 1.98 B. SAR Measurement Results Frequency (MHz) Relative permittivity (real part) Relative permittivity (imaginary part) Conductivity (S/m) Variation (%) 2442.000000 38.568275 13.324453 1.807684 1.260000 SURFACE SAR VOLUME SAR Maximum location: X=9.00, Y=-26.00 SAR Peak: 5.22 W/kg SAR 10g (W/Kg) 1.364215 SAR 1g (W/Kg) 2.846782 Page 35 of 56 Report No.: STR230303001007E Z (mm) SAR (W/Kg) 0.00 5.2396 4.00 3.0685 9.00 1.4643 14.00 0.6717 19.00 0.3132 24.00 0.1513 29.00 0.0711 3D screen shot Hot spot position Page 36 of 56 12. Appendix D. Calibration Certificate Table of contents E Field Probe - SN 08/16 EPGO287 2450 MHz Dipole - SN 03/15 DIP 2G450-352 Report No.: STR230303001007E Page 37 of 56 Report No.: STR230303001007E Page 38 of 56 Report No.: STR230303001007E Page 39 of 56 Report No.: STR230303001007E Page 40 of 56 Report No.: STR230303001007E Page 41 of 56 Report No.: STR230303001007E Page 42 of 56 Report No.: STR230303001007E Page 43 of 56 Report No.: STR230303001007E Page 44 of 56 Report No.: STR230303001007E Page 45 of 56 Report No.: STR230303001007E Page 46 of 56 Report No.: STR230303001007E Page 47 of 56 Report No.: STR230303001007E Page 48 of 56 Report No.: STR230303001007E Page 49 of 56 Report No.: STR230303001007E Page 50 of 56 Report No.: STR230303001007E Page 51 of 56 Report No.: STR230303001007E Page 52 of 56 Report No.: STR230303001007E Page 53 of 56 Report No.: STR230303001007E Page 54 of 56 Report No.: STR230303001007E Page 55 of 56 Report No.: STR230303001007E Page 56 of 56 Report No.: STR230303001007E _____________________________________ END_______________________________________Microsoft Office Word 2007