HAC RF Emission Test Rpt

FCC ID: UZ7TC25AJ

Test Report

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        FCC HAC RF Emissions Test Report                                        Report No. : HA822209A




     Hearing Aid Compatibility (HAC)
       RF Emissions Test Report

                  APPLICANT            : Zebra Technologies Corporation
                  EQUIPMENT            : Touch Computer
                  BRAND NAME           : Zebra
                  MODEL NAME           : TC25AJ
                  FCC ID               : UZ7TC25AJ
                  M-RATING             : M3
                  STANDARD             : FCC 47 CFR §20.19
                                         ANSI C63.19-2011


     We, SPORTON INTERNATIONAL INC., would like to declare that the tested sample has been
     evaluated in accordance with the procedures and had been in compliance with the
     applicable technical standards.

     The test results in this report apply exclusively to the tested model / sample. Without
     written approval of SPORTON INTERNATIONAL INC., the test report shall not be
     reproduced except in full.




         Reviewed by: Eric Huang / Manager




         Approved by: Jones Tsai / Manager



                             SPORTON INTERNATIONAL INC.
No.52, Hwa Ya 1st Rd., Hwa Ya Technology Park, Kwei-Shan District, Taoyuan City, Taiwan (R.O.C.)




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             FCC HAC RF Emissions Test Report                                                                                                   Report No. : HA822209A

                                                                Table of Contents
1.    General Information ................................................................................................................................................... 4
2.    Administration Data ................................................................................................................................................... 5
3.    Applied Standards ..................................................................................................................................................... 5
4.    RF Audio Interference Level...................................................................................................................................... 5
5.    Air Interface and Operating Mode............................................................................................................................. 6
6.    Measurement System Specification ......................................................................................................................... 7
      6.1     E-Field Probe System ....................................................................................................................................... 7
      6.2     Data Storage and Evaluation ............................................................................................................................ 8
7.    RF Emissions Test Procedure................................................................................................................................... 9
8.    Test Equipment List ..................................................................................................................................................12
9.    Measurement System Validation .............................................................................................................................13
10.   Modulation Interference Factor................................................................................................................................14
11.   Low-power Exemption ..............................................................................................................................................15
12.   HAC RF Emission Test Results ................................................................................................................................16
13.   Uncertainty Assessment ..........................................................................................................................................17
14.   References .................................................................................................................................................................19

Appendix A. Plots of System Performance Check
Appendix B. Plots of RF Emission Measurement
Appendix C. DASY Calibration Certificate




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        FCC HAC RF Emissions Test Report                                           Report No. : HA822209A

                                       Revision History
    REPORT NO.               VERSION                    DESCRIPTION                     ISSUED DATE

     HA822209A               Rev. 01     Initial issue of report                         Apr. 03, 2018




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        FCC HAC RF Emissions Test Report                                           Report No. : HA822209A
1. General Information
                                    Product Feature & Specification
Applicant Name       Zebra Technologies Corporation
Equipment Name       Touch Computer
Brand Name           Zebra
Model Name           TC25AJ
FCC ID               UZ7TC25AJ
HW Version           DV
SW Version           90-06-05-N-00-E1
MFD Version          11JUL17
EUT Stage            Identical Prototype
Exposure category    General Population/Uncontrolled Exposure
Date Tested          2018/03/31
                     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
                     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
Frequency Band
                     LTE Band 12: 699.7 MHz ~ 715.3 MHz
                     LTE Band 17: 706.5 MHz ~ 713.5 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 ~ 5720 MHz
                     WLAN 5.8GHz Band: 5745 MHz ~ 5825 MHz
                     Bluetooth: 2402 MHz ~ 2480 MHz
                     GSM/GPRS/EGPRS
                     RMC/AMR 12.2Kbps
                     HSDPA
Mode                 HSUPA
                     LTE: QPSK, 16QAM
                     802.11a/b/g/n/ac HT20/HT40/VHT20/VHT40/VHT80
                     Bluetooth EDR/LE




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seorrow cas. _FCC HAC RF Emissions Test Report                                                    Report No. : HA822209A
  2. Administration Data
  Sporton Lab is accredited to ISO 17025 by Taiwan Accreditation Foundation (TAF code: 1190) and the FCC designation
  No. TW 1190 under the FCC 2.948(e) by Mutual Recognition Agreement (MRA) in FCC test.

                                                    Testing Laboratory
  ECSshc                               SPORTON INTERNATIONAL INC.
                                       No.52, Hwa Ya 1st Rd., Hwa Ya Technology Park, Kwei—Shan District, Taoyuan City,
         .         .                   Taiwan (R.0.C.)
  xoimiciammind                        TEL: +886—3—327—3456
                                       FAX: +886—3—328—4978
                                       Sporton Site No. :
  Test Site No.
                                       SARO4—HY
                                                          Applicant
 Company Name                         Motorola Mobility LLC
 Address                              222 W,Merchandise Mart Plaza, Chicago IL 60654 USA
                                                         Manufacturer
 Company Name                         Motorola Mobility LLC
 Address                              222 W,Merchandise Mart Plaza, Chicago IL 60654 USA




  3. Applied Standards
    +        FCC CFR47 Part 20.19
    +        ANSIC63.19—2011
    +        FCC KDB 285076 DO1 HAC Guidance v05
    +_       FCC KDB 285076 DO2 T Coil testing v03




  4. RF Audio Interference Level
  FCC wireless hearing aid compatibility rules ensure that consumers with hearing loss are able to access wireless
  communications services through a wide selection of handsets without experiencing disabling radio frequency (RF)
  interference or other technical obstacles.
  To define and measure the hearing aid compatibility of handsets, in CFR47 part 20.19 ANSI €63.19 is referenced.
  A handset is considered hearing aid—compatible for acoustic coupling if it meets a rating of at least M3 under ANSI
  C63.19, and A handset is considered hearing aid compatible for inductive coupling if it meets a rating of at least T3.
  According to ANSI €63.19 2011 version, for acoustic coupling, the RF electric field emissions of wireless
  communication devices should be measured and rated according to the emission level as below.

                                                                        E—field emissions
                   Categories

                                              50 to 55 dB (V/m)                     40 to 45 dB (V/m)
                  M2                          45 to 50 dB (V/m)                     35 to 40 dB (V/m)
                  M3                          40 to 45 dB (V/m)                     30 to 35 dB (V/m)
                  M4                            <40 dB (V/m)                          <30 dB (V/m)
                                Table 5.1 Telephone near—field categories in linear units




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            FCC HAC RF Emissions Test Report                                                         Report No. : HA822209A
5. Air Interface and Operating Mode
   Air                                          C63.19               Simultaneous               Name of Voice       Power
Interface       Band MHz            Type
                                                Tested                Transmitter                 Service          Reduction
                EDGE850                                                WLAN, BT                                        No
  GSM                                VD           Yes                                             Google Duo
                EDGE1900                                               WLAN, BT                                        No
                850 HSPA                                               WLAN, BT                                        No
                                                     (1)
WCDMA          1750 HSPA             VD           No                   WLAN, BT                   Google Duo           No
               1900 HSPA                                               WLAN, BT                                        No
                  Band 2                                               WLAN, BT                                        No
                  Band 4                                               WLAN, BT                                        No
   LTE
                  Band 5             VD           No(1)                WLAN, BT                   Google Duo           No
  (FDD)
                 Band 12                                               WLAN, BT                                        No
                 Band 17                                               WLAN, BT                                        No
                   2450                                            GSM,WCDMA,LTE                                       No
                   5200                                            GSM,WCDMA,LTE                                       No
  Wi-Fi            5300              VD           Yes              GSM,WCDMA,LTE                  Google Duo           No
                   5500                                            GSM,WCDMA,LTE                                       No
                   5800                                            GSM,WCDMA,LTE                                       No
   BT              2450               DT           No             GSM,WCDMA,LTE                       NA               No
Type Transport:
VO= Voice only
DT= Digital Transport only (no voice)
VD= CMRS and IP Voice Service over Digital Transport
Remark:
1. The air interface is exempted from testing by low power exemption that its average antenna input power plus its MIF is ≤17
    dBm, and is rated as M4




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seorrow cas. _FCC HAC RF Emissions Test Report                                                             Report No. : HA822209A
  6. Measurement System Specification

        Remote Control Box                         PC


                0                                         —==
                >                                         —=
                O
                T
          SignalLamps                                                                      Electo—Ortical Commerter (E0C)
           ~1lZ/
                                                                                                             oae

                                                                                           (Ost. Ling
                                             Measurement Server
                                                                                                          E—feld ort—feld Probe
          Light Beam                                                                                                 Device Under Test
                                                                 2x Serial +                                 =
                                                                 Digtal ¥O
                                                                                           Phantom~—
                                                                                                                   |~Device Holder
                                                                                                                   —




       Teach Pendant
        C——I                                  Robot Controller

         DO




                                                    Fig 5.1 System Configurations


  6.1 E—Field Probe System
  E—Field Probe Specification
  <ER3DV6>
  Construction               One dipole parallel, two dipoles normal to probe axis
                             Built—in shielding against static charges
  Calibration                In air from 100 MHz to 3.0 GHz
                             (absolute accuracy +6.0%, k=2)
  efEcsy                     100 MHz to 6 GHz;
                             Linearity: + 2.0 dB (100 MHz to 3 GHz)
  Directivity                + 0.2 dB in air (rotation around probe axis)
                             + 0.4 dB in air (rotation normal to probe axis)
  Dynamic Range              2 V/m to 1000 V/m
                             (M3 or better device readings fall well below diode
                             compression point)
  Linearity                  + 0.2 dB
  Dimensions                 Overall length: 330 mm (Tip: 16 mm)
                             Tip diameter: 8 mm (Body: 12 mm)                          —                                 —
                             Distance from probe tip to dipole centers: 2.5 mm        Fig 5.2     Photo of E—field Probe
  Probe Tip Description:
  HAC field measurements take place in the close near field with high gradients. Increasing the measuring distance from the
  source will generally decrease the measured field values (in case of the validation dipole approx. 10 9%&per mm}.




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seorrow cas. _FCC HAC RF Emissions Test Report                                                      Report No. : HA822209A
  6.2 Data Storage and Evaluation

  The DASY software stores the assessed data from the data acquisition electronics as raw data (in microvolt
  readings from the probe sensors), together with all the necessary software parameters for the data evaluation
  {probe calibration data, and device frequency and modulation data) in measurement files.


        Probe parameters :          — Sensitivity                       NOFM;: &ip; Aits Siz
                                    — Conversion factor                 ConvF;
                                    — Diode compression point           dep;
        Device parameters :         — Frequency                         f
                                    — Crest factor                      cf
        Media parameters :          — Conductivity                      0
                                    — Density                           p

        The formula for each channel can be given as :

                                                                    ,   _of
                                                     Vi:Ui+Ui W
                                                                               i

        with   V; = compensated signal of channel i, (i= x, y, z)
               U; = input signal of channel i, (i =x, y, z)
               cf = crest factor of exciting field (DASY parameter)
               dep; = diode compression point (DASY parameter)



        From the compensated input signals, the primary field data for each channel can be evaluated :

                                                                                   V
                                             E—field Probes : E; =
                                                                        Normp—ConvF


        with   V; = compensated signal of channel i, (i= x, y, z)
               Norm; = sensor sensitivity of channel i, (i=x, y, z), pV/(V/m)2 for E—field Probes
               ConvF = sensitivity enhancement in solution
               f = carrier frequency [GHz]
               E; = electric field strength of channel i in V/m



        The RSS value of the field components gives the total field strength (Hermitian magnitude) :


                                                    Eror =   _[E2 + EJ + E2

        The primary field data are used to calculate the derived field units.




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        FCC HAC RF Emissions Test Report                                                  Report No. : HA822209A
7. RF Emissions Test Procedure
Referenced from ANSI C63.19 -2011 section 5.5.1
a. Confirm the proper operation of the field probe, probe measurement system, and other instrumentation
   and the positioning system.
b. Position the WD in its intended test position.
c. Set the WD to transmit a fixed and repeatable combination of signal power and modulation characteristic
   that is representative of the worst case (highest interference potential) encountered in normal use.
   Transiently occurring start-up, changeover, or termination conditions, or other operations likely to occur
   less than 1% of the time during normal operation, may be excluded from consideration.
d. The center sub-grid shall be centered on the T-Coil mode perpendicular measurement point or the
   acoustic output, as appropriate. Locate the field probe at the initial test position in the 50 mm by 50 mm
   grid, which is contained in the measurement plane, refer to illustrated in Figure 8.2. If the field alignment
   method is used, align the probe for maximum field reception.
e. Record the reading at the output of the measurement system.
f. Scan the entire 50 mm by 50 mm region in equality spaced increments and record the reading at each
   measurement point, The distance between measurement points shall be sufficient to assure the
   identification of the maximum reading.
g. Identify the five contiguous sub-grids around the center sub-grid whose maximum reading is the lowest of
   all available choices. This eliminates the three sub-grids with the maximum readings. Thus, the six areas
   to be used to determine the WD's highest emissions are identified.
h. Identify the maximum reading within the non-excluded sub-grids identified in step g).
i. Indirect measurement method
j. The RF audio interference level in dB (V/m) is obtained by adding the MIF (in dB) to the maximum
   steady-state rms field-strength reading, in dB (V/m)
k. Compare this RF audio interference level with the categories in ANSI C63.19-2011 clause 8 and record
   the resulting WD category rating.
l. For the T-Coil perpendicular measurement location is ≥5.0 mm from the center of the acoustic output,
   then two different 50 mm by 50 mm areas may need to be scanned, the first for the microphone mode
   assessment and the second for the T-Coil assessment.
m. The second for the T-Coil assessment, with the grid shifted so that it is centered on the perpendicular
   measurement point. Record the WD category rating.




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        FCC HAC RF Emissions Test Report                                       Report No. : HA822209A




                             Figure 8.1 RF Emissions Flow Chart




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        FCC HAC RF Emissions Test Report                                         Report No. : HA822209A




                 Fig 8.2 EUT reference and plane for HAC RF emission measurements




                               Fig. 8.3 Gauge block with E-field probe




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         FCC HAC RF Emissions Test Report                                                      Report No. : HA822209A
8. Test Equipment List
                                                                                               Calibration
  Manufacturer          Name of Equipment           Type/Model   Serial Number
                                                                                       Last Cal.         Due Date
    SPEAG            2450MHz Calibration Dipole     CD2450V3         1186            Jan. 09, 2018     Jan. 08, 2019
    SPEAG            Data Acquisition Electronics     DAE4           854             May. 02, 2017     May. 01, 2018
    SPEAG              Isotropic E-Field Probe       EF3DV3          4047            Jan. 08, 2018     Jan. 07, 2019
    Gencom                  Thermometer                TE1         TM685-2           Mar. 21, 2017     Mar. 20, 2018
    SPEAG                Test Arch Phantom             N/A           N/A                 NCR                 NCR
    SPEAG                 Phone Positoiner             N/A           N/A                 NCR                 NCR
      R&S                   Base Station             CMW500         115793           Aug. 23, 2017     Aug. 22, 2019
     Anritsu              Signal Generator          MG3710A       6201502524         Dec. 07, 2017     Dec. 06, 2018
     Anritsu                Power Meter              ML2495A       1419002           May. 15, 2017     May. 14, 2018
     Anritsu               Power Sensor              MA2411B       1339124           May. 15, 2017     May. 14, 2018
      ATM             Dual Directional Coupler      C122H-10     P610410z-02             NCR                 NCR
     Woken                   Attenuator             WK0602-XX        N/A                 NCR                 NCR
       AR                  Power Amplifier            5S1G4         325228           Jul. 06, 2017      Jul. 05, 2018
Note:
1. NCR: “No-Calibration Required”




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            FCC HAC RF Emissions Test Report                                                   Report No. : HA822209A
9. Measurement System Validation
Each DASY system is equipped with one or more system validation kits. These units, together with the predefined
measurement procedures within the DASY software, enable the user to conduct the system performance check and
system validation. System validation kit includes a dipole, tripod holder to fix it underneath the test Arch and a
corresponding distance holder.
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
HAC 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.

<Test Setup>
1.   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.
2.   The center point of the probe element(s) is 15mm from the closest surface of the dipole elements.
3.   The calibrated dipole must be placed beneath the arch phantom. The equipment setup is shown below:
4.   The output power on dipole port must be calibrated to 20dBm (100mW) before dipole is connected.




                                                 Fig. 7.1 Setup Diagram

<Validation Results>
Comparing to the original E-field value provided by SPEAG, the verification data should be within its specification of
25 %. Table 6.1 shows the target value and measured value. 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.
Deviation = ((Average E-field Value) - (Target value)) / (Target value) * 100%
                                                                             Average
Frequency Input Power        Target Value     E-Field 1       E-Field 2                    Deviation
                                                                              Value                          Date
  (MHz)      (dBm)              (V/m)           (V/m)           (V/m)                        (%)
                                                                              (V/m)
     2450          20             87.3          90.91          92.81          91.86           5.22       Mar 31, 2018




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         FCC HAC RF Emissions Test Report                                                            Report No. : HA822209A
10. Modulation Interference Factor
The HAC Standard ANSI C63.19-2011 defines a new scaling using the Modulation Interference Factor (MIF).
For any specific fixed and repeatable modulated signal, a modulation interference factor (MIF, expressed in dB)
may be developed that relates its interference potential to its steady-state rms signal level or average power level.
This factor is a function only of the audio-frequency amplitude modulation characteristics of the signal and is the
same for field-strength and conducted power measurements. It is important to emphasize that the MIF is valid only
for a specific repeatable audio-frequency amplitude modulation characteristic. Any change in modulation
characteristic requires determination and application of a new MIF
The Modulation Interference factor (MIF, in dB) is added to the measured average E-field (in dBV/m) and converts it
to the RF Audio Interference level (in dBV/m). This level considers the audible amplitude modulation components in
the RF E-field. CW fields without amplitude modulation are assumed to not interfere with the hearing aid electronics.
Modulations without time slots and low fluctuations at low frequencies have low MIF values, TDMA modulations
with narrow transmission and repetition rates of few 100 Hz have high MIF values and give similar classifications as
ANSI C63.19-2011.
ER3D, EF3D and EU2D E-field probes have a bandwidth <10 kHz and can therefore not evaluate the RF envelope
in the full audio band. DASY52 is therefore using the indirect measurement method according to ANSI C63.19-2011
which is the primary method. These near field probes read the averaged E-field measurement. Especially for the
new high peak-to-average (PAR) signal types, the probes shall be linearized by PMR calibration in order to not
overestimate the field reading. Probe Modulation Response (PMR) calibration linearizes the probe response over
its dynamic range for specific modulations which are characterized by their UID and result in an uncertainty
specified in the probe calibration certificate. The MIF is characteristic for a given waveform envelope and can be
used as a constant conversion factor if the probe has been PMR calibrated.
The evaluation method for the MIF is defined in ANSI C63.19-2011 section D.7. An RMS demodulated RF signal is
fed to a spectral filter (similar to an A weighting filter) and forwarded to a temporal filter acting as a quasi-peak
detector. The averaged output of these filtering is scaled to a 1 kHz 80% AM signal as reference. MIF measurement
requires additional instrumentation and is not well suited for evaluation by the end user with reasonable uncertainty.
It may alliteratively be determined through analysis and simulation, because it is constant and characteristic for a
communication signal. DASY52 uses well-defined signals for PMR calibration. The MIF of these signals has been
determined by simulation and it is automatically applied.
The MIF measurement uncertainty is estimated as follows, declared by HAC equipment provider SPEAG, for
modulation frequencies from slotted waveforms with fundamental frequency and at least 2 harmonics within 10 kHz:
1.    0.2 dB for MIF: -7 to +5 dB
2.    0.5 dB for MIF: -13 to +11 dB
3.    1 dB for MIF: > -20 dB
MIF values applied in this test report were provided by the HAC equipment provider of SPEAG, and the worst
values for all air interface are listed below to be determine the Low-power Exemption.

                     UID                      Communication System Name                           MIF(dB)
                    10025                    EDGE-FDD (TDMA, 8PSK, TN 0)                            3.75
                    10225                         UMTS-FDD (HSPA+)                                 -20.39
                    10170                LTE-FDD(SC-FDMA,1RB,20MHz,16-QAM)                         -9.76
                    10061               IEEE 802.11b WiFi 2.4 GHz (DSSS, 11 Mbps)                  -2.02
                    10077            IEEE 802.11g WiFi 2.4 GHz (DSSS/OFDM, 54 Mbps)                 0.12
                    10427             IEEE 802.11n (HT Greeneld, 150 Mbps, 64-QAM)                 -13.44
                    10069              IEEE 802.11a/h WiFi 5 GHz (OFDM, 54 Mbps)                   -3.15
                    10616           IEEE 802.11ac WiFi (40MHz, MCS0, 90pc duty cycle)              -5.57




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        FCC HAC RF Emissions Test Report                              Report No. : HA822209A
11. Low-power Exemption
<Max Tune-up Limit>
                                         Average Power
               Frequency Band
                                             (dBm)
                          EDGE850            28.00
      GSM
                          EDGE1900           27.00
                            Band V           24.00
                           Band IV           24.00
    WCDMA
                            Band II          24.00
                            HSPA             24.00
                            Band 2           24.00
                            Band 4           24.00
    FDD LTE                 Band 5           24.00
                           Band 12           24.00
                           Band 17           24.00
                           802.11b           20.00
                           802.11g           20.00
  2.4GHz WLAN
                         802.11n-HT20        20.00
                         802.11n-HT40        16.00
                           802.11a           18.50
                         802.11n-HT20        18.50
                         802.11n-HT40        18.50
   5GHz WLAN
                        802.11ac-VHT20       18.50
                        802.11ac-VHT40       18.50
                        802.11ac-VHT80       18.50




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seorrow cas. _FCC HAC RF Emissions Test Report                                                  Report No. : HA822209A
  <Low Power Exe        on>




                                           28.00                   3.75              31.75
                                           27.00                   3.75              30.75
                                           24.00                —20.39                3.61
                                           24.00                   —9.76             14.24
                                           20.00                   —2.02             17.98
                                           20.00                   0.12              20.12
                                           20.00                —13.44                6.56                   No
                                            16.00               —13.44                2.56                   No
                                            16.50                  —5.57             10.93                   No
                                            16.50                  —5.57             10.93                   No
                                            18.50                  315               15.35                   No
                                            18.50               —13.44                5.06                   No
                                            18.50               —13.44                5.06                   No
                                            18.50                  —5.57             12.93                   No
                                            18.50                  5.57              12.93                   No
                                            18.50                  —5.57             12.93                   No

  General Note:
  1. EDGE data modes is not necessary due the GSM Voice mode is the worst case and already evaluation in the
      Bureau Veritas Consumer Products Services (H.K.) HAC report, FCC ID: UZ7ZTC25AJ, Report No.:
       SA170427C12..
  2.   According to ANSI C€63.19 2011—version, for the air interface technology of a device is exempt from testing
       when its average antenna input power plus its MIF is <17 dBm for any of its operating modes.
  3.    HAC RF rating is M4 for the air interface which meets the low power exemption.




  12. HAC RF Emission Test Results



         WLANZ.4GHz        802.11b 1Mbps                      20           —2.02     30.09         4.91           M3
         WLANZ.4GHz        802.11b 1Mbps                      20           —2.02     30.37         4.63           M3
         WLANZ.4GHz        802.11b 1Mbps                      20           —2.02     30.45         4.55           M3
         WLANZ.4GHz        802.11g 6Mbps                      17           0.12      29.05         5.95           M4
         WLANZ.4GHz        802.11g 6Mbps                      20           0.12      32.27         2.73           M3
         WLANZ.4GHz        802.11g 6Mbps                      15           0.12      27.65         7.35           M4

  Remark:
  1. The HAC measurement system applies MIF value onto the measured RMS E—field, which is indirect method in
     ANSI C63.19 2011 version, and reports the RF audio interference level.
  2. Phone Condition: Mute on; Backlight off; Max Volume


       Test Engineer : Steven Chang.




  SPORTON INTERNATIONAL INC.                                                       Page Number        : 16 of 19
  TEL : 886—3—327—3456                                                             Report Issued Date : Apr. 03, 2018
  FAX : 886—3—328—4978                                                             Report Version     : Rev. 01
  FCC ID : UZ7TC25AJ


         FCC HAC RF Emissions Test Report                                                  Report No. : HA822209A



13. Uncertainty Assessment
The component of uncertainly may generally be categorized according to the methods used to evaluate them.
The evaluation of uncertainly by the statistical analysis of a series of observations is termed a Type A
evaluation of uncertainty. The evaluation of uncertainty by means other than the statistical analysis of a series
of observation is termed a Type B evaluation of uncertainty. Each component of uncertainty, however
evaluated, is represented by an estimated standard deviation, termed standard uncertainty, which is
determined by the positive square root of the estimated variance.


The combined standard uncertainty of the measurement result represents the estimated standard deviation of
the result. It is obtained by combining the individual standard uncertainties of both Type A and Type B
evaluation using the usual “root-sum-squares” (RSS) methods of combining standard deviations by taking the
positive square root of the estimated variances. Expanded uncertainty is a measure of uncertainty that
defines an interval about the measurement result within which the measured value is confidently believed to
lie. It is obtained by multiplying the combined standard uncertainty by a coverage factor. For purpose of this
document, a coverage factor two is used, which corresponds to confidence interval of about 95 %. The DASY
uncertainty Budget is showed in Table 12.1.




SPORTON INTERNATIONAL INC.                                                    Page Number        : 17 of 19
TEL : 886-3-327-3456                                                          Report Issued Date : Apr. 03, 2018
FAX : 886-3-328-4978                                                          Report Version     : Rev. 01
FCC ID : UZ7TC25AJ


seorrow cas. _FCC HAC RF Emissions Test Report                                                     Report No. : HA822209A




  Probe Calibration                       .           Normal                                           £5.1 %
  Axial Isot                              .         Rectangular                                        42.7 %
  Sensor Displacement                               Rectangular                                        +9.5 %
  Boundary Effects                        .         Rectangular                                        £1.4%
  Phantom Boundary Effects                .         Rectangular                                        441 %
  Linearity                               .         Rectangular                                        +2.7 %
  Scaling    with PMR Calibration                   Rectangular                                       £5.77 %
  System Detection Limit                  .         Rectangular                                        +0.6 %
  Readout Electronics                     .           Normal                                           +0.3 %
  Response Time                           .         Rectangular                                        +0.5 %
  Integration Time                        .         Rectangular                                        £1.5%
  RF Ambient Conditions                   .         Rectangular                                        £1.7 %
  RF Reflections                                    Rectangular                                        +6.9 %
  Probe Positioner                        .         Rectangular                                        + 0.7 %
  Probe Positionin:                       .         Rectangular                                        42.7 %
  Extrap. and Interpolation               —         Rectangular                                        +0.6 %


  Device Positioning Vertical             .         Rectangular                                        +2.7 %
  Device Positioning Lateral              —         Rectangular                                        +0.6 %
  Device Holder and Phantom               .         Rectangular                                        41.4%
  Power Drift                             —         Rectangular                                        +2.9 %


  Phantom Thickness                       .         Rectangular                                        £1.4%
  Combined Standard Uncertainty                                                                      +16.30%
  Coverage Factor for 95 %                                                                              K=2




                              Table 12.1 Uncertainty Budget of HAC free field assessment
            Remark:
            Worst—Case uncertainty budget for HAC free field assessment according to ANSIC63.19 [1], [2]. The budgetis
            valid for the frequency range 700 MHz — 3 GHz and represents a worst case analysis.




  SPORTON INTERNATIONAL INC.                                                          Page Number        : 18 of 19
  TEL : 886—3—327—3456                                                                Report Issued Date : Apr. 03, 2018
  FAX : 886—3—328—4978                                                                Report Version     : Rev. 01
  FCC ID : UZ7TC25AJ


         FCC HAC RF Emissions Test Report                                            Report No. : HA822209A

14. References
 [1]   ANSI C63.19-2011, “American National Standard for Methods of Measurement of Compatibility
       between Wireless Communications Devices and Hearing Aids”, 27 May 2011.
 [2]   FCC KDB 285076 D01v05, “Equipment Authorization Guidance for Hearing Aid Compatibility”, Sep
       2017
 [3]   FCC KDB 285076 D02v03, “Guidance for performing T-Coil tests for air interfaces supporting voice
       over IP (e.g., LTE and WiFi) to support CMRS based telephone services”, Sep 2017
 [4]   SPEAG DASY System Handbook




SPORTON INTERNATIONAL INC.                                              Page Number        : 19 of 19
TEL : 886-3-327-3456                                                    Report Issued Date : Apr. 03, 2018
FAX : 886-3-328-4978                                                    Report Version     : Rev. 01
FCC ID : UZ7TC25AJ



Document Created: 2018-04-11 10:55:48
Document Modified: 2018-04-11 10:55:48

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