Test Report HAC

FCC ID: IHDT56XC4

Test Report

Download: PDF
FCCID_3776470

        FCC HAC RF Emissions Test Report                                    Report No. : HA7D2018-02A




     Hearing Aid Compatibility (HAC)
       RF Emissions Test Report

                       APPLICANT             : Motorola Mobility LLC
                       EQUIPMENT             : Mobile Cellular Phone
                       BRAND NAME            : Motorola
                       MODEL NAME            : XT1921-2
                       FCC ID                : IHDT56XC4
                       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.)




SPORTON INTERNATIONAL INC.                                         Page Number        : 1 of 20
TEL : 886-3-327-3456                                               Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                               Report Version     : Rev. 01
FCC ID : IHDT56XC4


             FCC HAC RF Emissions Test Report                                                                                             Report No. : HA7D2018-02A

                                                                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.   Conducted RF Output Power (Unit: dBm) ...............................................................................................................16
13.   HAC RF Emission Test Results ................................................................................................................................17
14.   Uncertainty Assessment ..........................................................................................................................................18
15.   References .................................................................................................................................................................20

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




SPORTON INTERNATIONAL INC.                                                                                                  Page Number        : 2 of 20
TEL : 886-3-327-3456                                                                                                        Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                                                                        Report Version     : Rev. 01
FCC ID : IHDT56XC4


        FCC HAC RF Emissions Test Report                                       Report No. : HA7D2018-02A

                                       Revision History
    REPORT NO.               VERSION                    DESCRIPTION                     ISSUED DATE

   HA7D2018-02A              Rev. 01     Initial issue of report                        Feb. 23, 2018




SPORTON INTERNATIONAL INC.                                            Page Number        : 3 of 20
TEL : 886-3-327-3456                                                  Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                  Report Version     : Rev. 01
FCC ID : IHDT56XC4


        FCC HAC RF Emissions Test Report                                         Report No. : HA7D2018-02A
1. General Information
                                      Product Feature & Specification
Applicant Name       Motorola Mobility LLC
Equipment Name       Mobile Cellular Phone
Brand Name           Motorola
Model Name           XT1921-2
FCC ID               IHDT56XC4
HW Version           DVT1B
EUT Stage            Identical Prototype
Exposure category    General Population/Uncontrolled Exposure
Date Tested          2018/01/13
                     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
                     LTE Band 12: 699.7 MHz ~ 715.3 MHz
Frequency Band       LTE Band 14: 790.5 MHz ~ 795.5 MHz
                     LTE Band 17: 706.5 MHz ~ 713.5 MHz
                     LTE Band 30: 2307.5 MHz ~ 2312.5 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 ~ 5720 MHz
                     WLAN 5.8GHz Band: 5745 MHz ~ 5825 MHz
                     Bluetooth: 2402 MHz ~ 2480 MHz
                     GSM/GPRS/EGPRS
                     RMC/AMR 12.2Kbps
                     HSDPA
                     HSUPA
Mode                 DC-HSDPA
                     LTE: QPSK, 16QAM, 64QAM
                     WLAN 2.4GHz : 802.11b/g/n HT20
                     WLAN 5GHz : 802.11a/n HT20/HT40
                     Bluetooth BR/EDR/LE




SPORTON INTERNATIONAL INC.                                              Page Number        : 4 of 20
TEL : 886-3-327-3456                                                    Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                    Report Version     : Rev. 01
FCC ID : IHDT56XC4


seorrow cas. _FCC HAC RF Emissions Test Report                                                Report No. : HA7D2018—02A
  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,
         M         .                   Taiwan (R.0.C.)
  soimeimend                           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 D02 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 €C63.19 is referenced.
  A handset is considered hearing aid—compatible for acoustic coupling if it meets a rating of at least M3 under ANSI
  C©63.19, 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




  SPORTON INTERNATIONAL INC.                                                         Page Number         : 5 of 20
  TEL : 886—3—327—3456                                                               Report Issued Date : Feb. 23, 2018
  FAX : 886—3—328—4978                                                               Report Version      : Rev. 01
  FCC ID : IHDTSGXC4


            FCC HAC RF Emissions Test Report                                                    Report No. : HA7D2018-02A
5. Air Interface and Operating Mode
   Air                                          C63.19               Simultaneous               Name of Voice       Power
Interface       Band MHz            Type
                                                Tested                Transmitter                 Service          Reduction
                 GSM850                                                WLAN, BT                                        No
                                     VO           Yes                                            CMRS Voice
                GSM1900                                                WLAN, BT                                        No
  GSM
                EDGE850                                                WLAN, BT
                                     VD           Yes                                             Google Duo           No
                EDGE1900                                               WLAN, BT
                   850                                                 WLAN, BT                                        No
                   1750              VO           No(1)                WLAN, BT                  CMRS Voice            No
WCDMA
                   1900                                                WLAN, BT                                        No
                                                     (1)
                  HSPA               VD           No                   WLAN, BT                   Google Duo           No
                  Band 2                                               WLAN, BT                                        No
                  Band 4                                               WLAN, BT                                        No
                  Band 5                                               WLAN, BT                                        No
                 Band 12                                               WLAN, BT                     VoLTE              No
   LTE
                                     VD           No(1)                                               /
  (FDD)          Band 14                                               WLAN, BT                                        No
                                                                                                  Google Duo
                 Band 17                                               WLAN, BT                                        No
                 Band 30                                               WLAN, BT                                        No
                 Band 66                                               WLAN, BT                                        No
                   2450                                            GSM,WCDMA,LTE                                       No
                   5200                                            GSM,WCDMA,LTE                    VoWiFi             No
  Wi-Fi            5300              VD           No(1)            GSM,WCDMA,LTE                      /                No
                   5500                                            GSM,WCDMA,LTE                  Google Duo           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




SPORTON INTERNATIONAL INC.                                                             Page Number        : 6 of 20
TEL : 886-3-327-3456                                                                   Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                                   Report Version     : Rev. 01
FCC ID : IHDT56XC4


seorrow cas. _FCC HAC RF Emissions Test Report                                                      Report No. : HA7D2018—02A
  6. Measurement System Specification

         Remote Control Box                         PC


                0                                          <=
                >                                          G=
                O
                T
          SignalLamps                                                                      Electo—Ortical Commerter (E0C)
           M¥ lgy»
                                                                                                             oae

                                                                                           (Ost. Ling
                                              Measurement Server
                                                                                                          E—feld ort—feld Probe
           Light Beam                                                                                                Device Under Test
                                                                  2x Serial +                                =
                                                                  Digtal ¥O
                                                                                           Phatom~—
                                                                                                                   |~Device Holder
                                                                                                                   4




        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}.




  SPORTON INTERNATIONAL INC.                                                           Page Number                     : 7 of 20
  TEL : 886—3—327—3456                                                                 Report Issued Date : Feb. 23, 2018
  FAX : 886—3—328—4978                                                                 Report Version                  : Rev. 01
  FCC ID : IHDTSGXC4


seorrow cas. _FCC HAC RF Emissions Test Report                                                   Report No. : HA7D2018—02A
  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
                                     — 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) :


                                                     Erop =   [EZ + Ef + E2

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




  SPORTON INTERNATIONAL INC.                                                            Page Number         : 8 of 20
  TEL : 886—3—327—3456                                                                  Report Issued Date : Feb. 23, 2018
  FAX : 886—3—328—4978                                                                  Report Version      : Rev. 01
  FCC ID : IHDTSGXC4


        FCC HAC RF Emissions Test Report                                              Report No. : HA7D2018-02A
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.




SPORTON INTERNATIONAL INC.                                                   Page Number        : 9 of 20
TEL : 886-3-327-3456                                                         Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                         Report Version     : Rev. 01
FCC ID : IHDT56XC4


        FCC HAC RF Emissions Test Report                                   Report No. : HA7D2018-02A




                             Figure 8.1 RF Emissions Flow Chart




SPORTON INTERNATIONAL INC.                                        Page Number        : 10 of 20
TEL : 886-3-327-3456                                              Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                              Report Version     : Rev. 01
FCC ID : IHDT56XC4


        FCC HAC RF Emissions Test Report                                     Report No. : HA7D2018-02A




                 Fig 8.2 EUT reference and plane for HAC RF emission measurements




                               Fig. 8.3 Gauge block with E-field probe




SPORTON INTERNATIONAL INC.                                          Page Number        : 11 of 20
TEL : 886-3-327-3456                                                Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                Report Version     : Rev. 01
FCC ID : IHDT56XC4


         FCC HAC RF Emissions Test Report                                                   Report No. : HA7D2018-02A
8. Test Equipment List
                                                                                                 Calibration
 Manufacturer         Name of Equipment               Type/Model   Serial Number
                                                                                         Last Cal.         Due Date
    SPEAG          835MHz Calibration Dipole          CD835V3          1045            Sep. 27, 2017     Sep. 26, 2018
    SPEAG          1880MHz Calibration Dipole         CD1880V3         1038            Sep. 27, 2017     Sep. 26, 2018
    SPEAG          Data Acquisition Electronics         DAE4           778             May. 22, 2017     May. 21, 2018
    SPEAG            Isotropic E-Field Probe           ER3DV6          2480            Dec. 15, 2017     Dec. 14, 2018
    WonDer                Thermometer                  WD-5016       TM560-1           Mar. 17, 2017     Mar. 16, 2018
    SPEAG              Test Arch Phantom                 N/A           N/A                 NCR                 NCR
    SPEAG               Phone Positoiner                 N/A           N/A                 NCR                 NCR
    Anritsu               Power Meter                  ML2495A       1419002           May. 15, 2017     May. 14, 2018
    Anritsu              Power Sensor                  MA2411B       1339124           May. 15, 2017     May. 14, 2018
    Anritsu             Signal Generator              MG3710A       6201502524         Dec. 07, 2017     Dec. 06, 2018
      R&S                 Base Station                 CMU200         116457           May. 23, 2017     May. 22, 2018
      R&S                 Base Station                 CMW500         157119           Jun. 18, 2017     Jun. 17, 2018
      ATM           Dual Directional Coupler          C122H-10      P610410z-02            NCR                 NCR
    Woken                  Attenuator                WK0602-XX         N/A                 NCR                 NCR
  Mini-Circuits          Power Amplifier               ZVE-8G+       D120604           Mar. 09, 2017     Mar. 08, 2018
  Mini-Circuits          Power Amplifier              ZHL-42W+      QA1344002          Mar. 09, 2017     Mar. 08, 2018

                                               Table 8.1 Test Equipment List
Note:
1. NCR: “No-Calibration Required”




SPORTON INTERNATIONAL INC.                                                         Page Number        : 12 of 20
TEL : 886-3-327-3456                                                               Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                               Report Version     : Rev. 01
FCC ID : IHDT56XC4


         FCC HAC RF Emissions Test Report                                                  Report No. : HA7D2018-02A
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%
                                                E-Field       E-Field        Average
 Frequency      Input Power Target Value                                                   Deviation
                                              above high     above low        Value                          Date
   (MHz)           (dBm)       (V/m)                                                         (%)
                                               end (V/m)     end (V/m)        (V/m)
     835             20           106.8          113.4         112.4          112.9           5.71       Jan 13, 2018
     1880            20            90            91.53         92.45          91.99           2.21       Jan 13, 2018




SPORTON INTERNATIONAL INC.                                                        Page Number        : 13 of 20
TEL : 886-3-327-3456                                                              Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                              Report Version     : Rev. 01
FCC ID : IHDT56XC4


         FCC HAC RF Emissions Test Report                                                      Report No. : HA7D2018-02A
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)
                    10021                        GSM-FDD(TDMA,GMSK)                              3.63
                    10025                    EDGE-FDD (TDMA, 8PSK, TN 0)                         3.75
                    10460                      UMTS-FDD(WCDMA, AMR)                              -25.43
                    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




SPORTON INTERNATIONAL INC.                                                            Page Number        : 14 of 20
TEL : 886-3-327-3456                                                                  Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                                  Report Version     : Rev. 01
FCC ID : IHDT56XC4


        FCC HAC RF Emissions Test Report                               Report No. : HA7D2018-02A
11. Low-power Exemption
<Max Tune-up Limit>
                  Mode                  Average Power (dBm)
                             GSM850            33.50
                             EDGE850           26.00
        GSM
                             GSM1900           31.00
                          EDGE1900             25.50
                             Band V            24.00
      WCDMA                  Band IV           24.00
                              Band II          24.00
                              Band 2           24.00
                              Band 4           24.00
                              Band 5           24.00
                             Band 12           24.00
      FDD LTE
                             Band 14           24.00
                             Band 17           24.00
                             Band 30           24.00
                             Band 66           24.00
                             802.11b           18.50
    2.4GHz WLAN              802.11g           11.00
                         802.11n-HT20          9.00
                             802.11a           16.00
     5GHz WLAN           802.11n-HT20          11.00
                         802.11n-HT40          10.00




SPORTON INTERNATIONAL INC.                                    Page Number        : 15 of 20
TEL : 886-3-327-3456                                          Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                          Report Version     : Rev. 01
FCC ID : IHDT56XC4


          FCC HAC RF Emissions Test Report                                                   Report No. : HA7D2018-02A

<Low Power Exemption>
                              Max Average
                                                        Worst Case               Power +                 C63.19 test
      Air Interface           Antenna Input
                                                         MIF (dB)                MIF(dB)                  required
                              Power (dBm)
        GSM850                    33.50                     3.63                  37.13                     Yes
       EDGE850                    26.00                     3.75                  29.75                     No(1)
       GSM1900                    31.00                     3.63                  34.63                     Yes
       EDGE1900                   25.50                     3.75                  29.25                     No(1)
        WCDMA                     24.00                    -25.43                 -1.43                      No
     WCDMA - HSPA                 24.00                    -20.39                 3.61                       No
       LTE - FDD                  24.00                    -9.76                  14.24                      No
        802.11b                   18.50                    -2.02                  16.48                      No
        802.11g                   11.00                     0.12                  11.12                      No
     802.11n-HT20                 9.00                     -13.44                 -4.44                      No
        802.11a                   16.00                    -3.15                  12.85                      No
     802.11an-HT20                11.00                    -13.44                 -2.44                      No
     802.11an-HT40                10.00                    -13.44                 -3.44                      No

General Note:
1.   EDGE data modes is not necessary due the GSM Voice mode is the worst case.
2.   According to ANSI C63.19 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. Conducted RF Output Power (Unit: dBm)
                                              Average Antenna Input Power(dBm)
                   Band                                  GSM850                                GSM1900
                  Channel                     128           189          251         512          661                810
            Frequency (MHz)                   824.2        836.4        848.8       1850.2       1880.0             1909.8
         GSM (GMSK, 1 Tx slot)                33.10        33.42        33.41       30.77        30.86              30.62




SPORTON INTERNATIONAL INC.                                                         Page Number        : 16 of 20
TEL : 886-3-327-3456                                                               Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                               Report Version     : Rev. 01
FCC ID : IHDT56XC4


seorrow cas. _FCC HAC RF Emissions Test Report                                       Report No. : HA7D2018—02A
  13. HAC RF Emission Test Results



    4       GSM850                 GSM Voice         128        33.48     3.63     42.36       2.64          M3
    2       GSM850                 GSM Voice         189        33.42     3.63     41.77       3.28          M3
    3       GSM850                 GSM Voice         251         33.11    3.63     41.94       3.06          M3
    4      GSM1900                 GSM Voice         512        29.64     3.63     32.97       2.03          M3
    5      GSM1900                 GSM Voice         661        30.72     3.63     32.62       2.38          M3
    6      GSM1900                 GSM Voice         810        29.50     3.63     34.20       0.80          M3

  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 : Nick Yu.




  SPORTON INTERNATIONAL INC.                                                Page Number         : 17 of 20
  TEL : 886—3—327—3456                                                      Report Issued Date : Feb. 23, 2018
  FAX : 886—3—328—4978                                                      Report Version      : Rev. 01
  FCC ID : IHDTSGXC4


         FCC HAC RF Emissions Test Report                                              Report No. : HA7D2018-02A



14. 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        : 18 of 20
TEL : 886-3-327-3456                                                          Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                          Report Version     : Rev. 01
FCC ID : IHDT56XC4


seorrow cas. _FCC HAC RF Emissions Test Report                                                    Report No. : HA7D2018—02A




  Probe Calibration                       .           Normal                                           5.1 %
  Axial Isotr                             .         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         : 19 of 20
  TEL : 886—3—327—3456                                                                Report Issued Date : Feb. 23, 2018
  FAX : 886—3—328—4978                                                                Report Version      : Rev. 01
  FCC ID : IHDTSGXC4


         FCC HAC RF Emissions Test Report                                        Report No. : HA7D2018-02A

15. 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        : 20 of 20
TEL : 886-3-327-3456                                                    Report Issued Date : Feb. 23, 2018
FAX : 886-3-328-4978                                                    Report Version     : Rev. 01
FCC ID : IHDT56XC4



Document Created: 2018-04-07 21:24:34
Document Modified: 2018-04-07 21:24:34

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC