FCC SAR
Ningbo Pelican Smart Fishing Tackle Co., Ltd. CAT Remote Control of CatchX Smart Bait Boat 2ASTR-CAT 2ASTRCAT cat
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Document DEVICE REPORTGetApplicationAttachment.html?id=5825880TEST REPORT Reference No..................... : FCC ID ................................ : Applicant ........................... : Address ............................. : Product Name ................... : Model No............................ : Standards .......................... : Date of Receipt sample .... : Date of Test........................ : Date of Issue ..................... : Test Result......................... : WTX21X05045645W 2ASTR-CAT Ningbo Pelican Smart Fishing Tackle Co., Ltd No.16, Yongchang Road, Chengdong Industrial Park, Xiangshan County, Ningbo City, Zhejiang Province, China Remote Control of CatchX Smart Bait Boat CatchX FCC Part 2.1093, IEEE Std C95.1: 2019 IEEE Std C95.3: 2002 + Rev. 2008 May.13, 2021 May.13, 2021 to May.27, 2021 May.27, 2021 Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Tested by: Reviewed By: Approved & Authorized By: Jack Sun / Project Engineer Lion Cai / RF Manager Silin Chen / Manager Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 1 of 37 Reference No.: WTX21X05045645W Page 2 of 37 TABLE OF CONTENTS 1. General Information ...................................................................................................................................................4 1.1 Product Description for Equipment Under Test (EUT).........................................................................................4 1.2 Test Standards ....................................................................................................................................................6 1.3 Test Methodology ................................................................................................................................................6 1.4 Test Facility .........................................................................................................................................................6 2. Summary of Test Results ..........................................................................................................................................7 3. Specific Absorption Rate (SAR)................................................................................................................................8 3.1 Introduction..........................................................................................................................................................8 3.2 SAR Definition .....................................................................................................................................................8 4. SAR Measurement System........................................................................................................................................9 4.1 The Measurement System ..................................................................................................................................9 4.2 Probe...................................................................................................................................................................9 4.3 Probe Calibration Process.................................................................................................................................11 4.4 Phantom ............................................................................................................................................................12 4.5 Device Holder ....................................................................................................................................................12 4.6 Test Equipment List...........................................................................................................................................13 5. Tissue Simulating Liquids.......................................................................................................................................14 5.1 Composition of Tissue Simulating Liquid...........................................................................................................14 5.2 Tissue Dielectric Parameters for Head and Body Phantoms .............................................................................15 5.3 Tissue Calibration Result...................................................................................................................................16 6. SAR Measurement Evaluation ................................................................................................................................17 6.1 Purpose of System Performance Check............................................................................................................17 6.2 System Setup ....................................................................................................................................................17 6.3 Validation Results..............................................................................................................................................18 7. EUT Testing Position ...............................................................................................................................................19 7.1 EUT Antenna Position .......................................................................................................................................19 7.2 EUT Testing Position.........................................................................................................................................20 8. SAR Measurement Procedures...............................................................................................................................21 8.1 Measurement Procedures .................................................................................................................................21 8.2 Spatial Peak SAR Evaluation ............................................................................................................................21 8.3 Area & Zoom Scan Procedures .........................................................................................................................22 8.4 Volume Scan Procedures..................................................................................................................................22 8.5 SAR Averaged Methods ....................................................................................................................................22 8.6 Power Drift Monitoring .......................................................................................................................................22 9. SAR Test Result .......................................................................................................................................................23 9.1 Conducted RF Output Power ............................................................................................................................23 9.2 Test Results for Standalone SAR Test ..............................................................................................................25 9.3 Simultaneous Multi-band Transmission SAR Analysis ......................................................................................26 10. Measurement Uncertainty .....................................................................................................................................27 10.1 Uncertainty for EUT SAR Test.........................................................................................................................27 10.2 Uncertainty for System Performance Check....................................................................................................28 Annex A. Plots of System Performance Check .........................................................................................................30 Annex B. Plots of SAR Measurement .........................................................................................................................32 Annex C. EUT Photos ..................................................................................................................................................34 Annex D. Test Setup Photos .......................................................................................................................................36 Annex E. Calibration Certificate..................................................................................................................................37 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 2 of 37 Reference No.: WTX21X05045645W Report version Version No. Rev.00 / Date of issue May.27, 2021 / Page 3 of 37 Description Original / Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 3 of 37 Reference No.: WTX21X05045645W Page 4 of 37 1. General Information 1.1 Product Description for Equipment Under Test (EUT) Client Information Applicant: Address of Applicant: Ningbo Pelican Smart Fishing Tackle Co., Ltd No.16, Yongchang Road, Chengdong Industrial Park, Xiangshan County, Ningbo City, Zhejiang Province, China Manufacturer: Address of manufacturer: Ningbo Pelican Smart Fishing Tackle Co., Ltd No.16, Yongchang Road, Chengdong Industrial Park, Xiangshan County, Ningbo City, Zhejiang Province, China General Description of EUT: Product Name: Remote Control of CatchX Smart Bait Boat Trade Name: / Model No.: CatchX Adding Model: / Rated Voltage: DC3.7V Battery capacity: 3200mAh Software Version: V0.17 Hardware Version: V1.0 Note: The test data is gathered from a production sample provided by the manufacturer. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 4 of 37 Reference No.: WTX21X05045645W Page 5 of 37 Technical Characteristics of EUT: WIFI(2.4G) Support Standards: 802.11b, 802.11g, 802.11n-HT20/ HT40 Frequency Range: 2412-2462MHz for 802.11b/g/n(HT20), 2422-2452MHz for 802.11n(HT40) RF Output Power: 18.056dBm (Conducted) Type of Modulation: DBPSK,BPSK,DQPSK,QPSK,16QAM,64QAM Data Rate: 1-11Mbps, 6-54Mbps, up to 150Mbps Quantity of Channels: 11 for 802.11b/g/n-HT20, 7 for 802.11n-HT40 Channel Separation: 5MHz Antenna Type: FPC Antenna Antenna Gain: 1.5Bi 2.4G SRD Frequency Range: 2402-2478MHz RF Output Power: 4.223dBm(EIRP) Type of Antenna: SMA Antenna Antenna Gain: 3.5dBi Note: The Antenna Gain is provided by the customer and can affect the validity of results. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 5 of 37 Reference No.: WTX21X05045645W Page 6 of 37 1.2 Test Standards The following report is accordance with FCC 47 CFR Part 2.1093, IEEE Std C95.1: 2019, IEEE Std C95.3: 2002 + Rev. 2008, IEEE 62209-1528: 2020, and KDB 865664 D01 v01r04 and KDB 865664 D02 v01r02 and KDB 616217 D04 v01r02 and 248227 D01 802 11 Wi-Fi SAR v02r02. The objective is to determine compliance with FCC Part 2.1093 of the Federal Communication Commissions rules. Maintenance of compliance is the responsibility of the manufacturer. Any modification of the product, which result in lowering the emission, should be checked to ensure compliance has been maintained. 1.3 Test Methodology All measurements contained in this report were conducted with KDB 865664 D01 v01r04 and KDB 865664 D02 v01r02. The public notice KDB 447498 D01 v06 for Mobile and Portable Devices RF Exposure Procedure also. 1.4 Test Facility Address of the test laboratory Laboratory: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China FCC Registration No.: 125990 Waltek Testing Group (Shenzhen) Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the FCC (Federal Communications Commission). The acceptance letter from the FCC is maintained in our files. The Designation Number is CN5010.Test Firm Registration Number is 125990. Industry Canada (IC) Registration No.: 11464A The 3m Semi-anechoic chamber of Waltek Testing Group (Shenzhen) Co., Ltd. has been registered by Certification and Engineering Bureau of Industry Canada for radio equipment testing with Registration No.: 11464A. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 6 of 37 Reference No.: WTX21X05045645W 2. Summary of Test Results Page 7 of 37 The maximum results of Specific Absorption Rate (SAR) have found during testing are as follows: Frequency Band WLAN 2.4GHz Simultaneous Transmission Body (0mm Gap) Maximum SAR1g (W/kg) 0.995 1.130 SAR1g Limit (W/kg) 1.6 1.6 Remark: The device is in compliance with Specific Absorption Rate (SAR) for general population/uncontrolled exposure limits (1.6 W/kg) specified in FCC 47 CFR Part 2.1093 and ANSI/IEEE C95.1-2005+A1:2010, and had been tested in accordance with the measurement methods and procedure specified in KDB 865664 D01 v01r04, KDB 865664 D02 v01r02 and IEC 62209-2:2010+AMD1 (2019). Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 7 of 37 Reference No.: WTX21X05045645W Page 8 of 37 3. Specific Absorption Rate (SAR) 3.1 Introduction 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 techiques 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. 3.2 SAR Definition 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 either related to the temperature elevation in tissue by Where: C is the specific heat capacity, T is the temperature rise and t is the exposure duration, or 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. However for evaluating SAR of low power transmitter, electrical field measurement is typically applied. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 8 of 37 Reference No.: WTX21X05045645W Page 9 of 37 4. SAR Measurement System 4.1 The Measurement System Comosar is a system that is able to determine the SAR distribution inside a phantom of human being according to different standards. The Comosar system consists of the following items: - Main computer to control all the system - 6 axis robot - Data acquisition system - Miniature E-field probe - Phone holder - Head simulating tissue The following figure shows the system. The EUT under test operating at the maximum power level is placed in the phone holder, under the phantom, which is filled with head simulating liquid. The E-Field probe measures the electric field inside the phantom. The OpenSAR software computes the results to give a SAR value in a 1g or 10g mass. 4.2 Probe For the measurements the Specific Dosimetric E-Field Probe SSE2 SN 45/15 EPGO280 with following specifications is used - Dynamic range: 0.01-100 W/kg - Probe Length: 330 mm - Length of Individual Dipoles: 4.5 mm - Maximum external diameter: 8 mm Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 9 of 37 Reference No.: WTX21X05045645W Page 10 of 37 - Probe Tip External Diameter : 5 mm - Distance between dipoles / probe extremity: 2.7mm - Probe linearity: 0.25 dB - Axial Isotropy: 0.25 dB - Spherical Isotropy: 0.50 dB - Calibration range: 700 to 3000MHz for head & body simulating liquid. Angle between probe axis (evaluation axis) and suface normal line:1ess than 30° Probe calibration is realized, in compliance with EN 62209-1 and IEEE 1528 STD, with CALISAR, Antennessa proprietary calibration system. The calibration is performed with the EN 62209-1 annexe technique using reference guide at the five frequencies. Where : Pfw = Forward Power Pbw = Backward Power a and b =Waveguide dimensions I = Skin depth Keithley configuration: Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 10 of 37 Reference No.: WTX21X05045645W Page 11 of 37 Rate = Medium; Filter = ON; RDGS = 10; Filter type = Moving Average; Range auto after each calibration, a SAR measurement is performed on a validation dipole and compared with a NPL calibrated probe, to verify it. The calibration factors, CF(N), for the 3 sensors corresponding to dipole 1, dipole 2 and dipole 3 are: CF(N)=SAR(N)/Vlin(N) (N=1,2,3) The linearised output voltage Vlin(N) is obtained from the displayed output voltage V(N) using Vlin(N)=V(N)*(1+V(N)/DCP(N)) (N=1,2,3) where DCP is the diode compression point in mV. 4.3 Probe Calibration Process Dosimetric Assessment Procedure Each E-Probe/Probe Amplifier combination has unique calibration parameters. SATIMO Probe calibration procedure is conducted to determine the proper amplifier settings to enter in the probe parameters. The amplifier settings are determined for a given frequency by subjecting the probe to a known E-field density (1 mW/cm2) using an with CALISAR, Antenna proprietary calibration system. Free Space Assessment Procedure The free space E-field from amplified probe outputs is determined in a test chamber. This calibration can be performed in a TEM cell if the frequency is below 1 GHz and in a waveguide or other methodologies 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 rotated 360 degrees until the three channels show the maximum reading. The power density readings equates to 1mW/cm2. Temperature Assessment Procedure E-field temperature correlation calibration is performed in a flat phantom filled with the appropriate simulated head tissue. The E-field in the medium correlates with the temperature rise in the dielectric medium. For temperature correlation calibration a RF transparent thermistor-based temperature probe is used in conjunction with the E-field probe. SAR is proportional to T/t, the initial rate of tissue heating, before thermal diffusion takes place. The electric Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 11 of 37 Reference No.: WTX21X05045645W Page 12 of 37 field in the simulated tissue can be used to estimate SAR by equating the thermally derived SAR to that with the E- field component. 4.4 Phantom For the measurements the Specific Anthropomorphic Mannequin (SAM) defined by the IEEE SCC-34/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. 4.5 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°. System Material Delrin Permittivity 3.7 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 12 of 37 Loss Tangent 0.005 Reference No.: WTX21X05045645W Page 13 of 37 4.6 Test Equipment List Description E-Field Probe 835MHz Dipole 1800MHz Dipole 2450MHz Dipole 2600MHz Dipole 5 GHz Waveguide Dielectric Probe SAM Phantom MULTIMETER Signal Generator Universal Tester Communications Test er Network Analyzer Directional Couplers Manufacturer MVG MVG MVG MVG MVG MVG SATIMO MVG KEITHLEY Rohde & Schwarz Rohde & Schwarz Rohde & Schwarz HP Agilent Model Serial Number Cal. Date Due. Date SSE2 SN 45/15 EPGO280 2020-07-03 2021-07-02 SID835 SN 47/12 DIP 0G835-204 2020-03-11 2022-03-10 SID1800 SN 47/12 DIP 1G800-206 2020-03-11 2022-03-10 SID2450 SN 13/15 DIP 2G450-364 2020-03-11 2022-03-10 SID2600 SN 13/15 DIP 2G600-365 2020-03-11 2022-03-10 SWG5500 SN 49/16 WGA45 2020-07-03 2022-07-02 SCLMP SN 47/12 OCPG49 2020-03-11 2022-03-10 SAM SN/ 47/12 SAM95 N/A N/A Keithley 2000 4006367 2021-03-27 2022-03-26 SMR20 100047 2021-03-27 2022-03-26 CMU200 112012 2021-03-27 2022-03-26 CMW500 148650 2021-03-27 2022-03-26 8753C 778D 2901A00831 20160 2021-03-27 2022-03-26 2021-03-27 2022-03-26 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 13 of 37 Reference No.: WTX21X05045645W Page 14 of 37 5. Tissue Simulating Liquids 5.1 Composition of Tissue Simulating Liquid For the measurement of the field distribution inside the SAM phantom with SMTIMO, the phantom must be filled with around 25 liters of homogeneous body tissue simulating liquid. For head SAR testing, the liquid height from the ear reference point (ERP) of the phantom to the liquid top surface is larger than 15 cm. For body SAR testing, the liquid height from the center of the flat phantom to the liquid top surface is larger than 15 cm. Please see the following photos for the liquid height. Liquid Height for Body SAR The Composition of Tissue Simulating Liquid Frequency Water Salt Sugar HEC Preventol DGBE (MHz) (%) (%) (%) (%) (%) (%) Body 2450 68.6 0.1 0 0 0 31.3 Frequency (MHz) 5200-5800 Water (%) 78.6 Hexyl Carbitol (%) Body 10.7 Triton X-100 (%) 10.7 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 14 of 37 Reference No.: WTX21X05045645W Page 15 of 37 5.2 Tissue Dielectric Parameters for Head and Body Phantoms The IEEE Std. 1528, FCC KDBs and CEI/IEC 62209 standards state that the system validation measurements must be performed using a reference dipole meeting the fore mentioned return loss and mechanical dimension requirements. The validation measurement must be performed against a liquid filled flat phantom, with the phantom constructed as outlined in the fore mentioned standards. Per the standards, the dipole shall be positioned below the bottom of the phantom, with the dipole length centered and parallel to the longest dimension of the flat phantom, with the top surface of the dipole at the described distance from the bottom surface of the phantom. Target Frequency (MHz) 150 300 450 750 835 900 915 1450 1610 1800-2000 2450 3000 5200 5400 5600 5800 Conductivity ( ) 0.80 0.92 0.94 0.96 0.97 1.05 1.06 1.30 1.40 1.52 1.95 2.73 5.30 5.53 5.77 6.00 Body Permittivity ( r) 61.9 58.2 56.7 55.5 55.2 55.0 55.0 54.0 53.8 53.3 52.7 52.0 49.0 48.7 48.5 48.2 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 15 of 37 Reference No.: WTX21X05045645W Page 16 of 37 5.3 Tissue Calibration Result The dielectric parameters of the liquids were verified prior to the SAR evaluation using COMOSAR Dielectric Probe Kit and an Agilent Network Analyzer. Calibration Result for Dielectric Parameters of Tissue Simulating Liquid Freq. MHz. 2450 Temp. () 21.3 Body Tissue Simulating Liquid Conductivity Permittivity Reading Target ( ) ( ) Delta (%) Reading Target ( r) ( r) 1.91 1.95 -2.05 52.01 52.7 Delta (%) -1.31 Limit (%) Date ±5 2021-05-25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 16 of 37 Reference No.: WTX21X05045645W Page 17 of 37 6. SAR Measurement Evaluation 6.1 Purpose of System Performance 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. 6.2 System 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 which comes from a signal generator at frequency 2450MHz and 5000MHz. 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. System Verification Setup Block Diagram Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 17 of 37 Reference No.: WTX21X05045645W Page 18 of 37 Setup Photo of Dipole Antenna The output power on dipole port must be calibrated to 24 dBm(250 mW) before dipole is connected. The output power on 5 GHz Waveguide must be calibrated to 20 dBm (100mW) before 5 GHz Waveguide is connected. 6.3 Validation Results Comparing to the original SAR value provided by SATIMO, the validation data should be within its specification of 10 %. Table 6.1 shows the target SAR and measured SAR after normalized to 1W input power. The table below indicates the system performance check can meet the variation criterion. Frequency MHz 2450 Targeted SAR1g (W/kg) 50.33 Measured SAR1g (W/kg) Body 12.59 Normalized SAR1g Tolerance (W/kg) (%) Date 50.36 0.06 2021-05-25 Targeted and Measurement SAR Please refer to Annex A for the plots of system performance check. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 18 of 37 Reference No.: WTX21X05045645W 7. EUT Testing Position 7.1 EUT Antenna Position Page 19 of 37 130mm 28mm 40mm 100mm Antennas WLAN EUT Sizes: Long 250mm height:80mm Width:65mm Fig 7.1 Block Diagram for EUT Antenna Position Back side 40 Distance of EUT antenna-to-edge/surface(mm), Test distance:0mm Front side Left Edge Right Edge 28 65 <25 Top Edge 130 Bottom Edge 100 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 19 of 37 Reference No.: WTX21X05045645W Page 20 of 37 7.2 EUT Testing Position Body mode SAR assessments are required for this device. This EUT was tested in different positions for different SAR test modes, more information as below: Antennas WLAN(2.4G) Body SAR tests, Test distance: 0mm Front Back Right Side Left Side No No Yes No Top Side Yes Bottom No Remark: 1. Referring to KDB 447498 D01v06, the distance of the antennas to all adjacent edges SAR test exclusion for adjacent edges. 2. For tablet with overall diagonal dimension >20cm, SAR testing for front surface of the display section is exempted according to KDB616217 D04. Please refer to Annex D for the EUT test setup photos. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 20 of 37 Reference No.: WTX21X05045645W Page 21 of 37 8. SAR Measurement Procedures 8.1 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 highest power channel. (b) Keep EUT to radiate maximum output power or 100% factor (if applicable) (c) Measure output power through RF cable and power meter. (d) Place the EUT in the positions as Annex D demonstrates. (e) Set scan area, grid size and other setting on the SATIMO software. (f) Measure SAR results for the highest power channel on each testing position. (g) Find out the largest SAR result on these testing positions of each band (h) Measure SAR results for other channels in worst SAR testing position if the SAR of highest power channel is larger than 0.8 W/kg 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 8.2 Spatial Peak SAR Evaluation The procedure for spatial peak SAR evaluation has been implemented according to the test standard. It can be conducted for 1g and 10g, as well as for user-specific masses. The SATIMO software includes all numerical procedures necessary to evaluate the spatial peak SAR value. The base for the evaluation is a "cube" measurement. The measured volume must include the 1g and 10g cubes with the highest averaged SAR values. For that purpose, the center of the measured volume is aligned to the interpolated peak SAR value of a previously performed area scan. The entire evaluation of the spatial peak values is performed within the post-processing engine. The system always gives the maximum values for the 1g and 10g cubes. The algorithm to find the cube with highest averaged SAR is divided into the following stages: (a) Extraction of the measured data (grid and values) from the Zoom Scan (b) Calculation of the SAR value at every measurement point based on all stored data (c) Generation of a high-resolution mesh within the measured volume (d) Interpolation of all measured values form the measurement grid to the high-resolution grid (e) Extrapolation of the entire 3D field distribution to the phantom surface over the distance from sensor to surface (f) Calculation of the averaged SAR within masses of 1g and 10g Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 21 of 37 Reference No.: WTX21X05045645W Page 22 of 37 8.3 Area & Zoom Scan Procedures 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 measures 5x5x7 points with step size 8, 8 and 5 mm for 300 MHz to 3 GHz, and 8x8x8 points with step size 4, 4 and 2.5 mm for 3 GHz to 6 GHz. The Zoom Scan is performed around the highest E-field value to determine the averaged SAR-distribution over 10 g. 8.4 Volume Scan Procedures The volume scan is used for assess overlapping SAR distributions for antennas transmitting in different frequency bands. It is equivalent to an oversized zoom scan used in standalone measurements. The measurement volume will be used to enclose all the simultaneous transmitting antennas. For antennas transmitting simultaneously in different frequency bands, the volume scan is measured separately in each frequency band. In order to sum correctly to compute the 1g aggregate SAR, the EUT remain in the same test position for all measurements and all volume scan use the same spatial resolution and grid spacing (step-size is 4, 4 and 2.5 mm). When all volume scan were completed, the software can combine and subsequently superpose these measurement data to calculating the multiband SAR. 8.5 SAR Averaged Methods 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 minimize 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 1mm 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 10g and 1 g requires a very fine resolution in the three dimensional scanned data array. 8.6 Power Drift Monitoring All SAR testing is under the EUT install full charged battery and transmit maximum output power. In SATIMO 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 dB. If the power drift more than 5%, the SAR will be retested. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 22 of 37 Reference No.: WTX21X05045645W Page 23 of 37 9. SAR Test Result 9.1 Conducted RF Output Power Test Mode 2.4G SRD(2.4G)Maximum Average Power Channel Frequency (MHz) Average Power (dBm) CH 00 CH 01 CH 02 2402 2450 2478 3.610 4.223 3.918 Tune-up power (dBm) 4.0 4.5 4.0 Test Mode 802.11b 802.11g 802.11n (20MHz) 802.11n (40MHz) WLAN(2.4G) Maximum Average Power Data Rate Channel Frequency (MHz) Average Power (dBm) CH 01 2412 17.958 1Mbps CH 06 2437 17.982 CH 11 2462 18.056 CH 01 2412 15.369 6Mbps CH 06 2437 15.649 CH 11 2462 15.892 CH 01 2412 14.619 MCS0 CH 06 2437 14.688 CH 11 2462 14.647 CH 03 2422 11.018 MCS0 CH 06 2437 11.618 CH 09 2452 11.957 Tune-up power (dBm) 18.0 18.0 18.5 15.5 16.0 16.0 15.0 15.0 15.0 11.5 12.0 12.0 Remark: 1. Per KDB 248227 D01 v02r02, For 802.11b DSSS SAR measurements, DSSS SAR procedure applies to fixed exposure test position and initial test position procedure applies to multiple exposure test positions. 2. Per KDB 248227 D01 v02r02, For 802.11b DSSS SAR measurements ,when the reported SAR of the highest measured maximum output power channel (see 3.1) for the exposure configuration is 0.8 W/kg, no further SAR testing is required for 802.11b DSSS in that exposure configuration. When the reported SAR is > 0.8 W/kg, SAR is required for that exposure configuration using the next highest measured output power channel. When any reported SAR is > 1.2 W/kg, SAR is required for the third channel; i.e., all channels require testing. 3 .For OFDM modes (802.11g/n), SAR is not required when the highest reported SAR for DSSS is adjusted by the ratio of OFDM to DSSS specified maximum output power and it is <= 1.2W/kg. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 23 of 37 Reference No.: WTX21X05045645W Page 24 of 37 Remark: SRD(2.4G) maximum output power is 4.223dBm, Maximum Tune-Up output power is 4.5dBm. Per KDB 447498 D01 V06, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[f(GHz)] 3.0 for 1-g SAR and 7.5 for 10-g extremity SAR,16 where - f(GHz) is the RF channel transmit frequency in GHz - Power and distance are rounded to the nearest mW and mm before calculation17 - The result is rounded to one decimal place for comparison SRD(2.4G): Tune-Up Power (dBm) 4.5 Max. Power (mW) 2.82 Distance (mm) 5 Frequency (GHz) 2.450 Result 0.88 Limit 3 The exclusion thresholds is 0.88< 3, therefore, the RF exposure evaluation is not required. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 24 of 37 Reference No.: WTX21X05045645W Page 25 of 37 9.2 Test Results for Standalone SAR Test Body SAR Plot No. 1. Mode 802.11b 802.11b 802.11b Test Position Body Right Side Right Side Right Side WLAN 2.4GHz Body SAR Test(0 mm) Frequency Output Rated Power Limit CH. MHz (dBm) (dBm) 11 2462 18.056 18.5 01 2412 17.958 18.0 06 2437 17.982 18.0 Scaling Factor 1.108 1.010 1.004 SAR1g (W/kg) 0.898 0.754 0.867 Scaled SAR1g (W/kg) 0.995 0.761 0.871 Remark: 1. Per KDB 447498 D01 v06, if the highest output channel SAR for each exposure position 0.8 W/kg other channels SAR tests are not necessary. 2. Repeated measurement is not required when the original highest measured SAR is < 0.80 W/kg;steps 3) through 5) do not apply. 3. When the original highest measured SAR is 0.80 W/kg, repeat that measurement once. 4. 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). 5. 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. Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 25 of 37 Reference No.: WTX21X05045645W Page 26 of 37 9.3 Simultaneous Multi-band Transmission SAR Analysis List of Mode for Simultaneous Multi-band Transmission No. Configurations 1 WLAN(Data) + 2.4GSRD(Data) Body SAR Yes Remark: 1. According to the KDB 447498 D01 v06, when standalone SAR test exclusion applies to an antenna that transmits simultaneously with other antennas, the standalone SAR must be estimated according to following to determine simultaneous transmission SAR test exclusion: (max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]·[f(GHz)/x] W/kg for test separation distances 50 mm; where x = 7.5 for 1-g SAR, and x = 18.75 for 10-g SAR. For simultaneous transmission analysis, Bluetooth SAR is estimated per KDB 447498 D01 v06 as below: 2.4GSRD: Tune-Up Max. Power Frequency Distance (mm) X Power (dBm) (mW) (GHz) 4.5 2.82 5/10 2.450 7.5 SAR(1g) 5mm 0.118 SAR(1g) 10mm 0.059 2. The maximum SAR summation is calculated based on the same configuration and test position. Body SAR WWAN and WLAN Position Right WLAN(Data) Scaled SAR (W/kg) 1.012 2.4GSRD Scaled SAR (W/kg) 0.118 Summed SAR (W/kg) 1.130 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 26 of 37 Reference No.: WTX21X05045645W Page 27 of 37 10. Measurement Uncertainty 10.1 Uncertainty for EUT SAR Test a Uncertainty Component Measurement System Probe calibration b c d e= f(d,k) f g h= c*f/e i= c*g/e k Sec. Tol Prob. Div. Ci (1g) Ci (10g) 1g Ui 10g Ui Vi (+- %) Dist. (+-%) (+-%) E.2.1 7.0 N 1 1 7.00 7.00 Axial Isotropy E.2.2 2.5 R (1_Cp)^1/2 (1_Cp)^1/2 1.02 1.02 Hemispherical Isotropy E.2.2 4.0 R (Cp)^1/2 (Cp)^1/2 1.63 1.63 Boundary effect E.2.3 1.0 R 1 1 0.58 0.58 Linearity E.2.4 5.0 R 1 1 2.89 2.89 System detection limits E.2.5 1.0 R 1 1 0.58 0.58 Readout Electronics E.2.6 0.02 N 1 1 0.02 0.02 Reponse Time E.2.7 3.0 R 1 1 1.73 1.73 Integration Time E.2.8 2.0 R 1 1 1.15 1.15 RF ambient Conditions Noise E.6.1 3.0 R 1 1 1.73 1.73 RF ambient Conditions - E.6.1 3.0 R 1 Reflections 1 1.73 1.73 Probe positioner Mechanical E.6.2 2.0 R 1 Tolerance Probe positioning with respect to E.6.3 0.05 R 1 Phantom Shell Extrapolation, interpolation and E.5 5.0 R 1 integration Algoritms for Max. SAR Evaluation Test Sample Related Test sample positioning E.4.2 0.03 N 1 Device Holder Uncertainty E.4.1 5.00 N 1 Output power Variation - SAR E.2.9 12.02 R 1 drift measurement SAR scaling E6.5 0.0 R 1 1 1.15 1.15 1 0.03 0.03 1 2.89 2.89 1 0.03 0.03 1 5.00 5.00 1 6.94 6.94 1 0.0 0.0 Phantom and Tissue Parameters Phantom Uncertainty (Shape and E.3.1 0.05 R 1 thickness tolerances) 1 0.03 0.03 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 27 of 37 Reference No.: WTX21X05045645W Page 28 of 37 Uncertainty in SAR correction for E3.2 1.9 R 1 0.84 1.10 0.90 deviations in permittivity and conductivity Liquid conductivity - deviation E.3.2 5.00 R 0.64 0.43 1.85 1.24 from target value Liquid conductivity - E.3.3 5.00 N 0.64 0.43 3.20 2.15 measurement uncertainty Liquid permittivity - deviation E.3.2 0.37 R 0.6 0.49 0.13 0.10 from target value Liquid permittivity - E.3.3 10.00 N 0.6 0.49 6.00 4.90 measurement uncertainty Combined Standard Uncertainty RSS 12.98 12.53 Expanded Uncertainty K=2 25.32 24.43 (95% Confidence interval) 10.2 Uncertainty for System Performance Check a Uncertainty Component Measurement System Probe calibration b c d e= f(d,k) f g h= c*f/e i= c*g/e k Sec. Tol Prob. Div. Ci (1g) Ci (10g) 1g Ui 10g Ui Vi (+- %) Dist. (+-%) (+-%) E.2.1 7.0 N 1 1 7.00 7.00 Axial Isotropy E.2.2 2.5 R (1_Cp)^1/2 (1_Cp)^1/2 1.02 1.02 Hemispherical Isotropy E.2.2 4.0 R (Cp)^1/2 (Cp)^1/2 1.63 1.63 Boundary effect E.2.3 1.0 R 1 1 0.58 0.58 Linearity E.2.4 5.0 R 1 1 2.89 2.89 System detection limits E.2.5 1.0 R 1 1 0.58 0.58 Modulation response E.2.5 0 R 0 0 0.0 0.0 Readout Electronics E.2.6 0.02 N 1 1 0.02 0.02 Reponse Time E.2.7 3.0 R 1 1 1.73 1.73 Integration Time E.2.8 2.0 R 1 1 1.15 1.15 RF ambient Conditions Noise E.6.1 3.0 R 1 1 1.73 1.73 RF ambient Conditions - E.6.1 3.0 R 1 Reflections Probe positioner Mechanical E.6.2 2.0 R 1 Tolerance Probe positioning with respect to E.6.3 0.05 R 1 Phantom Shell Extrapolation, interpolation and E.5.2 5.0 R 1 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 28 of 37 1 1.73 1.73 1 1.15 1.15 1 0.03 0.03 1 2.89 2.89 Reference No.: WTX21X05045645W Page 29 of 37 integration Algoritms for Max. SAR Evaluation Dipole Dipole axis to liquid Distance 8,E.4.2 1.00 N 1 1 0.58 0.58 Input power and SAR drift 8,6.6.2 12.02 R 1 1 6.94 6.94 measurement Deviation of experimental dipole E.6.4 5.5 R 1 1 3.20 3.20 from numerical dipole Phantom and Tissue Parameters Phantom Uncertainty (Shape and E.3.1 0.05 R 1 1 0.03 0.03 thickness tolerances) Uncertainty in SAR correction for E3.2 2.0 R 1 0.84 1.10 1.10 deviations in permittivity and conductivity Liquid conductivity - deviation E.3.2 5.00 R 0.64 0.43 1.85 1.24 from target value Liquid conductivity - E.3.3 5.00 N 0.64 0.43 3.20 2.15 measurement uncertainty Liquid permittivity - deviation E.3.2 0.37 R 0.6 0.49 0.13 0.10 from target value Liquid permittivity - E.3.3 10.00 N 0.6 0.49 6.00 4.90 measurement uncertainty Combined Standard Uncertainty RSS 12.00 11.50 Expanded Uncertainty K=2 23.39 22.43 (95% Confidence interval) Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 29 of 37 Reference No.: WTX21X05045645W Page 30 of 37 Annex A. Plots of System Performance Check MEASUREMENT 1 Type: Validation measurement (Fast, 75.00 %) Measurement duration: 12 minutes 21 seconds E-field Probe: SSE2 - SN 18/21 EPGO356; ConvF: 2.62; Calibrated: 2021-07-16 A. Experimental conditions Area Scan Zoom Scan Phantom Device Position Band Signal dx=8mm dy=8mm dx=8mm dy=8mm dz=5mm Validation plane Dipole CW2450 Duty Cycle 1:1 B. SAR Measurement Results Frequency (MHz) Relative Permittivity (real part) Conductivity (S/m) Power Variation (%) Ambient Temperature Liquid Temperature 2450.000000 52.0102128 1.910255 1.369745 21.1 21.2 SURFACE SAR VOLUME SAR Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 30 of 37 Reference No.: WTX21X05045645W Page 31 of 37 Maximum location: X=0.00, Y=0.00 SAR 10g (W/Kg) SAR 1g (W/Kg) 6.119522 12.592360 Z (mm) SAR (W/Kg) 0.00 0.0000 4.00 13.1911 Z Axis Scan 9.00 14.00 11.7951 9.2945 19.00 8.5400 24.00 6.3712 29.00 4.6225 3D screen shot Hot spot position Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 31 of 37 Reference No.: WTX21X05045645W Page 32 of 37 Annex B. Plots of SAR Measurement MEASUREMENT 1 Type: Phone measurement (Complete) Date of measurement: 2021-05-25 Measurement duration: 12 minutes 3 seconds A. Experimental conditions Area Scan Zoom Scan Phantom Device Position Band Channels Signal B. SAR Measurement Results Frequency (MHz) Relative Permittivity (real part) Conductivity (S/m) Power Variation (%) Ambient Temperature Liquid Temperature SURFACE SAR dx=8mm dy=8mm dx=8mm dy=8mm dz=5mm Flat Plane Right WiFi_802.11b High Duty Cycle 1:1 2462.000000 52.009561 1.914230 2.403721 21.1 21.2 VOLUME SAR Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 32 of 37 Reference No.: WTX21X05045645W Page 33 of 37 Maximum location: X=16.00, Y=-30.00 SAR Peak: 1.57 W/kg SAR 10g (W/Kg) 0.465130 SAR 1g (W/Kg) 0.898287 Z (mm) SAR (W/Kg) 0.00 1.5750 4.00 0.9812 9.00 0.5239 14.00 0.2778 19.00 0.1525 3D screen shot Hot spot position Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 33 of 37 Reference No.: WTX21X05045645W Annex C. EUT Photos EUT View 1 Page 34 of 37 EUT View 2 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 34 of 37 Reference No.: WTX21X05045645W Antenna View Page 35 of 37 WIFI ANT Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 35 of 37 Reference No.: WTX21X05045645W Annex D. Test Setup Photos Body mode Exposure Conditions Test distance: 0mm Page 36 of 37 Body Right Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 36 of 37 Reference No.: WTX21X05045645W Page 37 of 37 Annex E. Calibration Certificate Please refer to the exhibit for the calibration certificate ***** END OF REPORT ***** Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 37 of 37
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