J1 Audio Adapter HD RF Exposure Info Essential Products .

Essential Products . Audio Adapter HD

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         FCC SAR TEST REPORT                                                                 Report No. : FA820628




                       FCC SAR TEST REPORT

                 FCC ID             : 2ALBB-A11
                 Equipment          : Smartphone
                 Brand Name : Essential
                 Model Name : A11
                 Applicant    : Essential Products Inc.
                                380 Portage Ave., Palo Alto, CA 94306
                 Manufacturer : FIH Mobile Limited
                                No.4, Mingsheng St.,Tu-Cheng Dist., New
                                Taipei City 23679, Taiwan
                 Standard     : FCC 47 CFR Part 2 (2.1093)
                                ANSI/IEEE C95.1-1992
                                IEEE 1528-2013

      The product was received on Jul. 25, 2018 and testing was started from Jul. 30, 2018 and
      completed on Jul. 31, 2018. We, SPORTON INTERNATIONAL INC., would like to declare that
      the tested sample has been evaluated in accordance with the test procedures and has been
      in compliance with the applicable technical standards.

      The report must not be used by the client to claim product certification, approval, or
      endorsement by TAF or any agency of government.

      The test results in this variant report apply exclusively to the tested model / sample.
      Without     written    approval   of   SPORTON      INTERTIONAL       INC.   EMC       &   Wireless
      Communications Laboratory, the test report shall not be reproduced except in full.




           Approved by: Jones Tsai / Manager



  SPORTON INTERTIONAL INC. EMC & Wireless Communications Laboratory
                       No. 52, Huaya 1st Rd., Guishan Dist., Taoyuan City, Taiwan (R.O.C.)




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              FCC SAR TEST REPORT                                                                                                                  Report No. : FA820628

                                                                Table of Contents
1. Statement of Compliance ............................................................................................................................................. 4
2. Guidance Applied .......................................................................................................................................................... 4
3. Equipment Under Test (EUT) Information ................................................................................................................... 5
     3.1 General Information ............................................................................................................................................... 5
4. RF Exposure Limits....................................................................................................................................................... 6
     4.1 Uncontrolled Environment ...................................................................................................................................... 6
     4.2 Controlled Environment.......................................................................................................................................... 6
5. Specific Absorption Rate (SAR) ................................................................................................................................... 7
     5.1 Introduction ............................................................................................................................................................ 7
     5.2 SAR Definition ........................................................................................................................................................ 7
6. System Description and Setup .................................................................................................................................... 8
     6.1 E-Field Probe ......................................................................................................................................................... 9
     6.2 Data Acquisition Electronics (DAE) ........................................................................................................................ 9
     6.3 Phantom ................................................................................................................................................................10
     6.4 Device Holder........................................................................................................................................................ 11
7. Measurement Procedures ...........................................................................................................................................12
     7.1 Spatial Peak SAR Evaluation ................................................................................................................................12
     7.2 Power Reference Measurement............................................................................................................................13
     7.3 Area Scan .............................................................................................................................................................13
     7.4 Zoom Scan ............................................................................................................................................................14
     7.5 Volume Scan Procedures ......................................................................................................................................14
     7.6 Power Drift Monitoring...........................................................................................................................................14
8. Test Equipment List .....................................................................................................................................................15
9. System Verification ......................................................................................................................................................16
     9.1 Tissue Simulating Liquids ......................................................................................................................................16
     9.2 Tissue Verification .................................................................................................................................................17
     9.3 System Performance Check Results .....................................................................................................................18
10. Antenna Location .......................................................................................................................................................19
11. EUT with 60GHz Audio Adapter SAR Verification Results .....................................................................................20
     11.1 Head SAR ...........................................................................................................................................................20
     11.2 Hotspot SAR........................................................................................................................................................20
     11.3 Body Worn Accessory SAR .................................................................................................................................20
12. Uncertainty Assessment ...........................................................................................................................................21
13. References ..................................................................................................................................................................21
Appendix A. Plots of System Performance Check
Appendix B. Plots of High SAR Measurement
Appendix C. DASY Calibration Certificate
Appendix D. Test Setup Photos




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         FCC SAR TEST REPORT                                                    Report No. : FA820628



                                 History of this test report
    Report No.         Version                             Description              Issued Date

     FA820628            01      Initial issue of report                           Sep. 03, 2018




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seorronias. FCC SAR TEST REPORT                                                                     Report No. : FA820628
    1. Statement of Compliance
 The maximum results of Specific Absorption Rate (SAR) found during testing for Essential Products Inc.,
 Smartphone, A11, are as follows.


 <EUT with 60GHz Audio Adapter SAR verification>
                                                                          Highest SAR Summary
          Equipment              Frequency                Head                  Body—worn                 Hotspot
            MEES                   Band             (Separation Omm)        (Separation 10mm)       (Separation 10mm)
                                                                              1g SAR (Wkg)
            DTS                 2.4GHz WLAN                0.09                    0.02                     0.01
             XI                  5GHz WLAN                 0.05                    0.04                     0.04
                  Date of Testing:                                        2018/7/30 ~ 2018/7/31


 Sporton Lab is accredited to ISO 17025 by Taiwan Accreditation Foundation (TAF code: 1190) and the FCC
 designation No. TW1190 under the FCC 2.948(e) by Mutual Recognition Agreement (MRA) in FCC test. This
 device is in compliance with Specific Absorption Rate (SAR) for general population/uncontrolled exposure
  limits (1.6 W/kg) specified in FCC 47 CFR part 2 (2.1093) and ANSV/IEEE C95.1—1992, and had been tested in
 accordance with the measurement methods and procedures specified in IEEE 1528—2013 and FCC KDB
 publications


  Reviewed by: Eric Huang
  Report Producer: Wan Liu




 2. Guidance Applied
     The Specific Absorption Rate (SAR) testing specification, method, and procedure for this device is in accordance with
     the following standards:
      >      FCC 47 CFR Part 2 (2.1093)
             ANSVIEEE C95.1—1992
             IEEE 1528—2013
             FCC KDB 865664 D01 SAR Measurement 100 MHz to 6 GHz v01r04
             FCC KDB 865664 D02 SAR Reporting v01r02
             FCC KDB 447498 DO1 General RF Exposure Guidance v06
             FCC KDB 648474 D04 SAR Evaluation Considerations for Wireless Handsets v01r08
             FCC KDB 248227 D01 802.11 Wi—Fi SAR v02r02
             FCC KDB 941225 D06 Hotspot Mode SAR v02r01




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          FCC SAR TEST REPORT                                                                              Report No. : FA820628
3. Equipment Under Test (EUT) Information
3.1 General Information
                                                    Product Feature & Specification
Equipment Name                   Smartphone
Brand Name                       Essential
Model Name                       A11
FCC ID                           2ALBB-A11
IMEI Code                        001064000162326
                                 GSM850: 824.2 MHz ~ 848.8 MHz
                                 GSM1900: 1850.2 MHz ~ 1909.8 MHz
                                 WCDMA Band II: 1852.4 MHz ~ 1907.6 MHz
                                 WCDMA Band IV: 1712.4 MHz ~ 1752.6 MHz
                                 WCDMA Band V: 826.4 MHz ~ 846.6 MHz
                                 CDMA2000 BC0: 824.7 MHz ~ 848.31 MHz
                                 CDMA 2000 BC1: 1851.25 MHz ~ 1908.75 MHz
                                 CDMA 2000 BC10: 817.9 MHz ~ 823.1 MHz
                                 LTE Band 2: 1850.7 MHz ~ 1909.3 MHz
                                 LTE Band 4: 1710.7 MHz ~ 1754.3 MHz
                                 LTE Band 5: 824.7 MHz ~ 848.3 MHz
                                 LTE Band 7: 2502.5 MHz ~ 2567.5 MHz
                                 LTE Band 12: 699.7 MHz ~ 715.3 MHz
Wireless Technology and LTE Band 13: 779.5 MHz ~ 784.5 MHz
Frequency Range                  LTE Band 17: 706.5 MHz ~ 713.5 MHz
                                 LTE Band 25: 1850.7 MHz ~ 1914.3 MHz
                                 LTE Band 26: 814.7 MHz ~ 848.3 MHz
                                 LTE Band 30: 2307.5 MHz ~ 2312.5 MHz
                                 LTE Band 41: 2498.5 MHz ~ 2687.5 MHz
                                 LTE Band 66: 1710.7 MHz ~ 1779.3 MHz
                                 WLAN 2.4GHz Band: 2412 MHz ~ 2462 MHz
                                 WLAN 5.2GHz Band: 5180 MHz ~ 5240 MHz
                                 WLAN 5.3GHz Band: 5260 MHz ~ 5320 MHz
                                 WLAN 5.5GHz Band: 5500 MHz ~ 5700 MHz
                                 WLAN 5.8GHz Band: 5745 MHz ~ 5825 MHz
                                 Bluetooth: 2402 MHz ~ 2480 MHz
                                 NFC: 13.56 MHz
                                 802.11ad 60GHz
                                 GSM/GPRS/EGPRS/DTM
                                 RMC/AMR 12.2Kbps
                                 HSDPA
                                 HSUPA
                                 DC-HSDPA
                                 HSPA+ (16QAM uplink)
Mode                             CDMA2000 : 1xRTT/1xEv-Do(Rev.0)/1xEv-Do(Rev.A)
                                 LTE: QPSK, 16QAM, 64QAM
                                 WLAN 2.4GHz : 802.11b/g/n HT20/HT40
                                 WLAN 5GHz : 802.11a/n/ac HT20/HT40/VHT20/VHT40/VHT80
                                 Bluetooth BR/EDR/LE
                                 NFC:ASK
                                 802.11ad
HW Version                       DVT
SW Version                       NMF26X 99
GSM / (E)GPRS Dual Transfer
                                 Class A – EUT can support Packet Switched and Circuit Switched Network simultaneously.
mode
EUT Stage                        Identical Prototype
Remark:
1. The output power and tune-up limit is referred to FCC ID: 2ALBB-A11, sporton report no.: FA740822 and used for this SAR
    calculation.
2. In this C2PC filing is enable 60GHz function by SW, the system design that ensures that the two 60GHz transmitters only operate
    when audio adapter and phone are connected together via a proprietary interface.
3. For the 60GHz RF exposure analysis to justify compliance with RF exposure limits for the 2AL60GHz transmitter was subject to
    FCC guidance through the FCC KDB system, and presents on the report (FCC ID: 2ALBB-J1).
4. Since the EUT has the additional 60GHz audio adapter (FCC ID: 2ALBB-J1) that can be collocated to use for taking photography,
    therefore additional consider when the 60GHz audio adapter attached on the handset may influence the SAR characteristics of
    transmitters in the handset.
5. Since 60GHz antenna is close to the 2 WLAN antennas on the upper part of the phone, according to FCC request, we additionally
    check the WLAN SAR when the audio adapter (FCC ID: 2ALBB-J1) is attached on the phone.
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          FCC SAR TEST REPORT                                                                      Report No. : FA820628
4. RF Exposure Limits
4.1 Uncontrolled Environment
Uncontrolled Environments are defined as locations where there is the exposure of individuals who have no knowledge or
control of their exposure. The general population/uncontrolled exposure limits are applicable to situations in which the
general public may be exposed or in which persons who are exposed as a consequence of their employment may not be
made fully aware of the potential for exposure or cannot exercise control over their exposure. Members of the general
public would come under this category when exposure is not employment-related; for example, in the case of a wireless
transmitter that exposes persons in its vicinity.


4.2 Controlled Environment
Controlled Environments are defined as locations where there is exposure that may be incurred by persons who are
aware of the potential for exposure, (i.e. as a result of employment or occupation). In general, occupational/controlled
exposure limits are applicable to situations in which persons are exposed as a consequence of their employment, who
have been made fully aware of the potential for exposure and can exercise control over their exposure. The exposure
category is also applicable when the exposure is of a transient nature due to incidental passage through a location where
the exposure levels may be higher than the general population/uncontrolled limits, but the exposed person is fully aware
of the potential for exposure and can exercise control over his or her exposure by leaving the area or by some other
appropriate means.


                             Limits for Occupational/Controlled Exposure (W/kg)




                        Limits for General Population/Uncontrolled Exposure (W/kg)




     1.   Whole-Body SAR is averaged over the entire body, partial-body SAR is averaged over any 1gram 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.




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         FCC SAR TEST REPORT                                                                            Report No. : FA820628
5. Specific Absorption Rate (SAR)
5.1 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 techniques or numerical
    modeling. The standard recommends limits for two tiers of groups, occupational/controlled and general
    population/uncontrolled, based on a person’s awareness and ability to exercise control over his or her exposure. In
    general, occupational/controlled exposure limits are higher than the limits for general population/uncontrolled.


5.2 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 (ρ). The equation description is as
    below:

                                                        𝐝 𝐝𝐖    𝐝 𝐝𝐖
                                              𝐒𝐀𝐑 =       (   )= (    )
                                                        𝐝𝐭 𝐝𝐦   𝐝𝐭 𝛒𝐝𝐯
    SAR is expressed in units of Watts per kilogram (W/kg)

                                                              𝛔|𝐄|𝟐
                                                        𝐒𝐀𝐑 =
                                                                𝛒
    Where: σ is the conductivity of the tissue, ρ is the mass density of the tissue and E is the RMS electrical field strength.




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         FCC SAR TEST REPORT                                                              Report No. : FA820628
6. System Description and Setup
The DASY system used for performing compliance tests consists of the following items:




     A standard high precision 6-axis robot with controller, teach pendant and software. An arm extension for
      accommodating the data acquisition electronics (DAE).
     An isotropic Field probe optimized and calibrated for the targeted measurement.
     A data acquisition electronics (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.
     The Electro-optical converter (EOC) performs the conversion from optical to electrical signals for the
      digital communication to the DAE. To use optical surface detection, a special version of the EOC is
      required. The EOC signal is transmitted to the measurement server.
     The function of the measurement server is to perform the time critical tasks such as signal filtering,
      control of the robot operation and fast movement interrupts.
     The Light Beam used is for probe alignment. This improves the (absolute) accuracy of the probe
      positioning.
     A computer running WinXP or Win7 and the DASY5 software.
     Remote control and teach pendant as well as additional circuitry for robot safety such as warning lamps,
      etc.
     The phantom, the device holder and other accessories according to the targeted measurement.




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seorron ias._FCC SAR TEST REPORT                                                                            Report No. : FA820628
  6.1 E—Field Probe
  The SAR measurement is conducted with the dosimetric probe (manufactured by SPEAG).The probe is specially
  designed and calibrated for use in liquid with high permittivity. The dosimetric probe has special calibration in liquid at
  different frequency. This probe has a built in optical surface detection system to prevent from collision with phantom.


  <ES3DV3 Probe>
  Construction              Symmetric design with triangular core
                            Interleaved sensors
                            Built—in shielding against static charges
                            PEEK enclosure material (resistant to organic
                            solvents, e.g., DGBE)
  Frequency                 10 MHz — 4 GHz;
                            Lingarity: +0.2 dB (30 MHz — 4 GHz)
  Directivity               £0.2 dB in TSL (rotation around probe axis)
                            20.3 dB in TSL (rotation normal to probe axis)
  Dynamic Range             5 uW/g —>100 mWig;
                            Linearity: +0.2 dB
  Dimensions                Overall length: 337 mm (tip: 20 mm)
                            Tip diameter: 3.9 mm (body: 12 mm)
                            Distance from probetip to dipole centers: 3.0 mm


  <EX3DV4 Probe>
  Construction              Symmetric design with triangular core
                            Built—in shielding against static charges
                            PEEK enclosure material (resistant to organic
                            solvents, e.g., DGBE)
  Frequency                 10 MHz —>6 GHz
                            Lingarity: +0.2 dB (30 MHz — 6 GHz)
  Directivity               20.3 dB in TSL (rotation around probe axis)
                            £0.5 dB in TSL (rotation normal to probe axis)
  Dynamic Range             10 uW/g —>100 mW/g                                                          4
                            Linearity: +0.2 dB (noise: typically <1 uW/g)                           4
  Dimensions                Overall length: 337 mm (tip: 20 mm
                            Tip diameter: 2.5 mm (body: 12 mm)
                            Typical distance from probetip to dipole centers: 1
                            mm



  6.2 Data Acquisition Electronics (DAE)
  The data acquisition electronics (DAE) consists of a highly sensitive
  electrometer—grade     preamplifier   with   auto—zeroing,    a   channel    and
  gain—switching multiplexer, a fast 16 bit AD—converter and a command
  decoder and control logic unit. Transmission to the measurement server is
  accomplished through an optical downlink for data and status information as
 well as an optical uplink for commands and the clock.
  The input impedance of the DAE is 200 MOhm; the inputs are symmetrical
  and floating. Common mode rejection is above 80 dB.                                     Fig 5.1           Photo of DAE




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      FCC SAR TEST REPORT                                                                            Report No. : FA820628
6.3 Phantom
<SAM Twin Phantom>
Shell Thickness              2 ± 0.2 mm;
                             Center ear point: 6 ± 0.2 mm
Filling Volume               Approx. 25 liters
Dimensions                   Length: 1000 mm; Width: 500 mm; Height:
                             adjustable feet
Measurement Areas            Left Hand, Right Hand, Flat Phantom




The bottom plate contains three pair of bolts for locking the device holder. The device holder positions are adjusted to the
standard measurement positions in the three sections. A white cover is provided to tap the phantom during off-periods to
prevent water evaporation and changes in the liquid parameters. On the phantom top, three reference markers are
provided to identify the phantom position with respect to the robot.



<ELI Phantom>
Shell Thickness          2 ± 0.2 mm (sagging: <1%)
Filling Volume           Approx. 30 liters
Dimensions               Major ellipse axis: 600 mm
                         Minor axis: 400 mm




The ELI phantom is intended for compliance testing of handheld and body-mounted wireless devices in the frequency
range of 30 MHz to 6 GHz. ELI4 is fully compatible with standard and all known tissue simulating liquids.




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      FCC SAR TEST REPORT                                                                            Report No. : FA820628
6.4 Device Holder
<Mounting Device for Hand-Held Transmitter>
In combination with the Twin SAM V5.0/V5.0c or ELI phantoms, the Mounting Device for Hand-Held Transmitters enables
rotation of the mounted transmitter device to specified spherical coordinates. At the heads, the rotation axis is at the ear
opening. Transmitter devices can be easily and accurately positioned according to IEC 62209-1, IEEE 1528, FCC, or
other specifications. The device holder can be locked for positioning at different phantom sections (left head, right head,
flat). And upgrade kit to Mounting Device to enable easy mounting of wider devices like big smart-phones, e-books, small
tablets, etc. It holds devices with width up to 140 mm.




                          Mounting Device for Hand-Held
                                                               Mounting Device Adaptor for Wide-Phones
                                  Transmitters




<Mounting Device for Laptops and other Body-Worn Transmitters>
The extension is lightweight and made of POM, acrylic glass and foam. It fits easily on the upper part of the mounting
device in place of the phone positioned. The extension is fully compatible with the SAM Twin and ELI phantoms.




                                                Mounting Device for Laptops




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           FCC SAR TEST REPORT                                                                         Report No. : FA820628
7. Measurement Procedures
   The measurement procedures are as follows:

   <Conducted power measurement>
   (a) For WWAN power measurement, use base station simulator to configure EUT WWAN transmission in conducted
       connection with RF cable, at maximum power in each supported wireless interface and frequency band.
   (b) Read the WWAN RF power level from the base station simulator.
   (c) For WLAN/BT power measurement, use engineering software to configure EUT WLAN/BT continuously
       transmission, at maximum RF power in each supported wireless interface and frequency band
   (d) Connect EUT RF port through RF cable to the power meter, and measure WLAN/BT output power

   <SAR measurement>
   (a) Use base station simulator to configure EUT WWAN transmission in radiated connection, and engineering
       software to configure EUT WLAN/BT continuously transmission, at maximum RF power, in the highest power
       channel.
   (b) Place the EUT in the positions as Appendix D demonstrates.
   (c) Set scan area, grid size and other setting on the DASY software.
   (d) Measure SAR results for the highest power channel on each testing position.
   (e) Find out the largest SAR result on these testing positions of each band
   (f) Measure SAR results for other channels in worst SAR testing position if the reported 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


7.1 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 DASY 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 (SEMCAD). 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 (A/D values and
            measurement parameters)
     (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 3-D 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




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      FCC SAR TEST REPORT                                                                           Report No. : FA820628
7.2 Power Reference Measurement
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.


7.3 Area Scan
The area scan is used as a fast scan in two dimensions to find the area of high field values, before doing a fine
measurement around the hot spot. The sophisticated interpolation routines implemented in DASY software can find the
maximum found in the scanned area, within a range of the global maximum. The range (in dB0 is specified in the
standards for compliance testing. For example, a 2 dB range is required in IEEE standard 1528 and IEC 62209 standards,
whereby 3 dB is a requirement when compliance is assessed in accordance with the ARIB standard (Japan), if only one
zoom scan follows the area scan, then only the absolute maximum will be taken as reference. For cases where multiple
maximums are detected, the number of zoom scans has to be increased accordingly.
Area scan parameters extracted from FCC KDB 865664 D01v01r04 SAR measurement 100 MHz to 6 GHz.




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       FCC SAR TEST REPORT                                                                          Report No. : FA820628
7.4 Zoom Scan
Zoom scans are used assess the peak spatial SAR values within a cubic averaging volume containing 1 gram and 10
gram of simulated tissue. The zoom scan measures points (refer to table below) within a cube shoes base faces are
centered on the maxima found in a preceding area scan job within the same procedure. When the measurement is done,
the zoom scan evaluates the averaged SAR for 1 gram and 10 gram and displays these values next to the job’s label.
Zoom scan parameters extracted from FCC KDB 865664 D01v01r04 SAR measurement 100 MHz to 6 GHz.




7.5 Volume Scan Procedures
The volume scan is used for assess overlapping SAR distributions for antennas transmitting in different frequency bands.
It is equivalent to an oversized zoom scan used in standalone measurements. The measurement volume will be used to
enclose all the simultaneous transmitting antennas. For antennas transmitting simultaneously in different frequency bands,
the volume scan is measured separately in each frequency band. 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. When all volume scan were completed, the software, SEMCAD postprocessor can combine and
subsequently superpose these measurement data to calculating the multiband SAR.

7.6 Power Drift Monitoring
All SAR testing is under the EUT install full charged battery and transmit maximum output power. In DASY 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 drifts more than 5%, the SAR will be
retested.




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             FCC SAR TEST REPORT                                                                   Report No. : FA820628
8. Test Equipment List
                                                                                                      Calibration
Manufacturer            Name of Equipment           Type/Model         Serial Number
                                                                                             Last Cal.            Due Date
  SPEAG          2450MHz System Validation Kit        D2450V2               929            Mar. 01, 2018     Feb. 28, 2019
  SPEAG            5GHz System Validation Kit        D5GHzV2                1006           Sep. 26, 2017     Sep. 25, 2018
  SPEAG            Data Acquisition Electronics        DAE4                 854            Jun. 14, 2018     Jun. 13, 2019
  SPEAG                Dosimetric E-Field Probe       EX3DV4                3925           May. 31, 2018     May. 30, 2019
 RCPTWN                     Thermometer                HTC-1              TM685-1          Mar. 16, 2018     Mar. 15, 2019
  SPEAG                     Device Holder               N/A                 N/A                 N/A                 N/A
   Anritsu                Signal Generator           MG3710A            6201502524         Dec. 07, 2017     Dec. 06, 2018
   Agilent              ENA Network Analyzer          E5071C            MY46316648         Jan. 17, 2018     Jan. 16, 2019
  SPEAG                  Dielectric Probe Kit         DAK-3.5               1126           Sep. 26, 2017     Sep. 25, 2018
 LINE SEIKI              Digital Thermometer      DTM3000-spezial           3169           Sep. 06, 2017     Sep. 05, 2018
   Anritsu                  Power Meter               ML2495A             1419002          May. 18, 2018     May. 17, 2019
   Anritsu                  Power Sensor              MA2411B             1339124          May. 18, 2018     May. 17, 2019
   Anritsu                  Power Meter               ML2495A             1218006          Oct. 06, 2017     Oct. 05, 2018
   Anritsu                  Power Sensor              MA2411B             1207363          Oct. 06, 2017     Oct. 05, 2018
   Agilent               Spectrum Analyzer            E4408B            MY44211028         Aug. 23, 2017     Aug. 22, 2018
   Anritsu               Spectrum Analyzer            MS2830A           6201396378         Jun. 23, 2018     Jun. 22, 2019
Mini-Circuits              Power Amplifier            ZVE-8G+             D120604          Mar. 12, 2018     Mar. 11, 2019
Mini-Circuits              Power Amplifier           ZHL-42W+           QA1344002          Mar. 12, 2018     Mar. 11, 2019
    ATM                Dual Directional Coupler      C122H-10           P610410z-02                      Note 1
   Woken                     Attenuator 1           WK0602-XX               N/A                          Note 1
     PE                      Attenuator 2            PE7005-10              N/A                          Note 1
     PE                      Attenuator 3            PE7005- 3              N/A                          Note 1
General Note:
 1.  Prior to system verification and validation, the path loss from the signal generator to the system check source and
     the power meter, which includes the amplifier, cable, attenuator and directional coupler, was measured by the
     network analyzer. The reading of the power meter was offset by the path loss difference between the path to the
     power meter and the path to the system check source to monitor the actual power level fed to the system check
     source.




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         FCC SAR TEST REPORT                                                               Report No. : FA820628
9. System Verification
9.1 Tissue Simulating Liquids
    For the measurement of the field distribution inside the SAM phantom with DASY, the phantom must be
    filled with around 25 liters of homogeneous body tissue simulating liquid. For head SAR testing, the liquid
    height from the ear reference point (ERP) of the phantom to the liquid top surface is larger than 15 cm,
    which is shown in Fig. 10.1. For body SAR testing, the liquid height from the center of the flat phantom to
    the liquid top surface is larger than 15 cm, which is shown in Fig. 10.2.




      Fig 10.1Photo of Liquid Height for Head SAR           Fig 10.2 Photo of Liquid Height for Body SAR




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seorron cas. FCC SAR TEST REPORT                                                            Report No. : FA820628
   9.2 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.




          750                 41.1           .        1.4
          835                 40.3           .        1.4
          900                 40.3           .        1.4
    1800, 1900, 2000          55.2                    0.3
         2450                 55.0                     0
         2600                 54.8                    0.1


          750                 51.7                    0.9        0.1
          835                 50.8                    0.9        0.1
          900                 50.8                    0.9        0.1
    1800, 1900, 2000          70.2   0                0.4         0
         2450                 68.6   0                 0          0
         2600                 68.1   0                0.1         0


  Simulating Liquid for 5GHz, Manufactured by SPEAG

                   Water                          64~78%
                Mineral oil                       11~18%
                Emulsifiers                       9~15%
             Additives and Sait                    2~8%



  <Tissue Dielectric Parameter Check Results>



                                                                                                        2018/7/30
                                                                                                        2018/7/30
                                                                                                        2018/7/30
                                                                                                        2018/7/31
                                                                                                        2018/7/30
                                                                                                        2018/7/31
                                                                                                        2018/7/30
                                                                                                        2018/7/31




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       FCC SAR TEST REPORT                                                                           Report No. : FA820628
9.3 System Performance Check Results
Comparing to the original SAR value provided by SPEAG, 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 check can meet the variation criterion and the plots can be referred to Appendix A of this report.
                           Input                                           Measured Targeted Normalized
          Frequency Tissue         Dipole             Probe            DAE                              Deviation
  Date                     Power                                            1g SAR 1g SAR     1g SAR
            (MHz)    Type            S/N               S/N             S/N                                 (%)
                           (mW)                                             (W/kg)   (W/kg)    (W/kg)
2018/7/30    2450    HSL    250  D2450V2-929     EX3DV4 - SN3925 DAE4 Sn854 12.60     52.20     50.4      -3.45
2018/7/30     2450     MSL   250   D2450V2-929   EX3DV4 - SN3925 DAE4 Sn854       13.10      52.30      52.4       0.19
2018/7/30     5250     HSL   100   D5GHzV2-1006 EX3DV4 - SN3925 DAE4 Sn854         8.01      78.30      80.1       2.30
2018/7/31     5250     MSL   100   D5GHzV2-1006 EX3DV4 - SN3925 DAE4 Sn854         7.61      77.00      76.1       -1.17
2018/7/30     5600     HSL   100   D5GHzV2-1006 EX3DV4 - SN3925 DAE4 Sn854         9.09      85.00      90.9       6.94
2018/7/31     5600     MSL   100   D5GHzV2-1006 EX3DV4 - SN3925 DAE4 Sn854         7.78      80.10      77.8       -2.87
2018/7/30     5750     HSL   100   D5GHzV2-1006 EX3DV4 - SN3925 DAE4 Sn854         8.29      78.50      82.9       5.61
2018/7/31     5750     MSL   100   D5GHzV2-1006 EX3DV4 - SN3925 DAE4 Sn854         7.50      75.10       75        -0.13




            Fig 8.3.1 System Performance Check Setup                                      Fig 8.3.2 Setup Photo




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         FCC SAR TEST REPORT                                                                        Report No. : FA820628
10. Antenna Location



                                                   Top Side
                                                     71.12m
                                                        m
                                                                                      2.4GHz WLAN
                                                                                        Antenna 1

                                    5GHz WLAN
                                     Antenna 1
                                                                 Sibeam SB6212


                                                                  Audio Adapter




                       Right                         159mm                             Left
                       Side                                                            Side

                         141.52mm




                                                              2.4GHz/5GHz WLAN / BT
                                             NFC                    Antenna 2


                                                     WWAN Antenna                                     Back View

                                                    Bottom Side




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seorrow cas. _FCC SAR TEST REPORT                                                                                                  Report No. : FA820628
  11. EUT with 60GHz Audio Adapter SAR Verification Results

  WLAN Note:
  1. When the audio adapter is attached on the phone, only spot check 2.4GHz WLAN ANT 1 and 5GHz WLAN ANT 1, due to
        both antennas location are close to the audio adapter
  2.    The 2.4GHz WLAN head SAR worst case is left tilted but when the audio adapter attached on the phone and try to position
        on the titled with 15 degree for the head exposure condition, the audio reviver location of device can‘t touch the center of the
        ear of the head phantom, therefore, spot check is selected right check position perform
  3.    When the audio adapter attached on the phone and the audio adapter is located on the 2.4GHz WLAN ANT 1, therefore the
        audio adapter directly touch flat phantom to do body—worm SAR spot check for the WLANZ.4GHz back surface.
  4.    SAR test position for the "top side", the audio adapter will touch the phantom while the phone is 32mm from the phantom,
        and SAR test is not so representative. We additionally verify the "left side" to check the SAR level change when the audio
        adapter is attached.
  5.    Additional SAR spot check on the left and right side to compare SAR impact by audio adapter attachment


  11.1 Head SAR
  <WLAN SAR>

                                                                                    Average Tune—Up Tune—up |Duty        (;Du;ye   ioolsoo oeliete ieols
                                             AoSs        Gap                Freq.
                                                                                     Power    Limit Scaling Cycle          Y        blallin P SZ t ie ET
                                            uied                      °/.   (MHz)
                                                                                    Cfiie
       WLANZ.4GHz]     802.11b 1Mbps       Right Cheek   Omm      1         2412     14.45   1450    1.012     100       1.000     —0.15     0.091    0.092
       WLANSGHz      |802.11n—HT40 MCSO|    Left Cheek   Omm|    62         s810     1144    1150    1.014    |89.77]    1.114      0.08     0.039    0.044
 ro




       WLANSGHz      |802.11n—HT4OMCSO|    LeftCheek     |Omm|   110        5580     11.47   11.50   1.007    |88.77]    1.114      0.09     0.034    0.038
 w




       WLANSGHz      |802.11n—HT4OMCSO|    LeftCheek     |Omm|   151        8755     11.48   11.50   1.005    |89.77]    1.114     —0.16|    0.040    0.045
 a




  11.2 Hotspot SAR
  <WLAN SAR>



  5    WLANZ.4GHz]      802.11b 1Mbps       Top Side
  6    WLANZ.4GHz]     802.11b 1Mbps        Left Side
  7    WLANSGHz      |802.11n—HT40 MCSO       Back
  8    WLANSGHz      |802.11n—HT40 MCSO    Right Side
  9    WLANSGHz      |802.11n—HT40 MCSO       Back
 10    WLANSGHz      |802.11n—HT40 MCSO    Right Side



  11.3 Body Worn Accessory SAR
  <WLAN SAR>
                                                                                    Average Tune—Up Tune—up Dut          Duty      Power Measured (Reported
                                              l          Eca                         3   h    hh P Scali i fe Iy         uEL        Drift   SAR      pSAF!
                                            foAdrtynt    (mm)                         ower    imit   caling     Cycle Scaling        y      1g       RF]
                                                                                    Ccoo             ie                                     c        o
 11    |WLANZ4GHz      802.11b tMbps          Back       Omm      1         2412     14.45   14.50   1.012     100       1.000     —0.07     0.017    0.017
 12    WLANSGHz      |802.1 tn—HT40 MCSO      Back       10mm|   62         5810     1144     11.5   1.014    |89.77]    1.114     —0.03     0.011    0.012
 18    WLANSGHz      |802.1 tn—HT40 MCSO      Back       1Omm|   102        5510     11.48    11.5   1.005    |89.77]    1.114     —0.06     0.029    0.032
 14    WLANSGHz      |802.1 tn—HT40 MCSO      Back       10mm]   151        5755     11.48   11.50   1.005    |89.77]    1.114     —0.17     0.033    0.037



           Test Engineer : White Huang


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         FCC SAR TEST REPORT                                                                   Report No. : FA820628
12. Uncertainty Assessment
    Per KDB 865664 D01 SAR measurement 100MHz to 6GHz, when the highest measured 1-g SAR within a frequency
    band is < 1.5 W/kg and the measured 10-g SAR within a frequency band is < 3.75 W/kg. The expanded SAR
    measurement uncertainty must be ≤ 30%, for a confidence interval of k = 2. If these conditions are met, extensive
    SAR measurement uncertainty analysis described in IEEE Std 1528-2013 is not required in SAR reports submitted
    for equipment approval. For this device, the highest measured 1-g SAR is less 1.5W/kg. Therefore, the measurement
    uncertainty table is not required in this report.




13. References
       [1]   FCC 47 CFR Part 2 “Frequency Allocations and Radio Treaty Matters; General Rules and
             Regulations”
       [2]   ANSI/IEEE Std. C95.1-1992, “IEEE Standard for Safety Levels with Respect to Human Exposure
             to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz”, September 1992
       [3]   IEEE Std. 1528-2013, “IEEE Recommended Practice for Determining the Peak Spatial-Average
             Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices:
             Measurement Techniques”, Sep 2013
       [4]   SPEAG DASY System Handbook
       [5]   FCC KDB 248227 D01 v02r02, “SAR Guidance for IEEE 802.11 (WiFi) Transmitters”, Oct 2015.
       [6]   FCC KDB 447498 D01 v06, “Mobile and Portable Device RF Exposure Procedures and
             Equipment Authorization Policies”, Oct 2015
       [7]   FCC KDB 648474 D04 v01r03, “SAR Evaluation Considerations for Wireless Handsets”, Oct
             2015.
       [8]   FCC KDB 941225 D06 v02r01, "SAR Evaluation Procedures for Portable Devices with Wireless
             Router Capabilities", Oct 2015.
       [9]   FCC KDB 865664 D01 v01r04, "SAR Measurement Requirements for 100 MHz to 6 GHz", Aug
             2015.
       [10] FCC KDB 865664 D02 v01r02, “RF Exposure Compliance Reporting and Documentation
             Considerations” Oct 2015.




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Document Created: 2019-03-21 21:23:48
Document Modified: 2019-03-21 21:23:48
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