TestRpt_HAC_T-Coil

FCC ID: PY7-57442Z

Test Report

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FCCID_3652034

FCC HAC T-Coil Test Report Report No. : HA760712-01B Hearing Aid Compatibility (HAC) T-Coil Test Report APPLICANT : Sony Mobile Communications Inc. BRAND NAME : Sony FCC ID : PY7-57442Z 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 shown the 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 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B Table of Contents 1. Attestation of Test Results ........................................................................................................................................ 4 2. Administration Data ................................................................................................................................................... 4 3. General Information ................................................................................................................................................... 5 3.1 Description of Equipment Under Test (EUT) ..................................................................................................... 5 3.2 Air Interface and Operating Mode..................................................................................................................... 6 3.3 Applied Standards ............................................................................................................................................ 6 4. HAC T-Coil .................................................................................................................................................................. 7 4.1 T-Coil Coupling Field Intensity .......................................................................................................................... 7 4.2 T-Coil Frequency Response ............................................................................................................................. 7 4.3 T-Coil Signal Quality Categories ....................................................................................................................... 9 5. Measurement System Specification ........................................................................................................................10 5.1 System Configuration ......................................................................................................................................10 5.2 Test Arch Phantom ..........................................................................................................................................10 5.3 AMCC .............................................................................................................................................................. 11 5.4 AM1D Probe .................................................................................................................................................... 11 5.5 AMMI ...............................................................................................................................................................12 5.6 System Hardware ............................................................................................................................................12 5.7 Cabling of System for GSM / UMTS ................................................................................................................13 5.8 Test Equipment List .........................................................................................................................................14 5.9 Probe Calibration in AMCC ..............................................................................................................................15 5.10 Reference Input of Audio Signal Spectrum ......................................................................................................16 5.11 Establish Reference Level for GSM / UMTS ...................................................................................................17 6. T-Coil Test Procedure ...............................................................................................................................................18 6.1 Test Process and Flow Chart ...........................................................................................................................18 6.2 Description of EUT Test Position .....................................................................................................................21 7. HAC T-Coil Test Results ...........................................................................................................................................22 7.1 Magnitude Result.............................................................................................................................................22 8. Uncertainty Assessment ..........................................................................................................................................23 9. References .................................................................................................................................................................24 Appendix A. Plots of T-Coil Measurement Appendix B. DASY Calibration Certificate Appendix C. Test Setup Photos SPORTON INTERNATIONAL INC. Page Number : 2 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B Revision History REPORT NO. VERSION DESCRIPTION ISSUED DATE HA760712-01B Rev. 01 Initial issue of report Nov. 02, 2017 SPORTON INTERNATIONAL INC. Page Number : 3 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 1. Attestation of Test Results Applicant Name Sony Mobile Communications Inc. Brand Name Sony FCC ID PY7-57442Z RQ3005WMD4 S/N CQ300004NY HW Version A SW Version 1.14 EUT Stage Production Unit Exposure category General Population/Uncontrolled Exposure HAC Rating T4 Date Tested 2017/08/21 ~ 2017/10/09 Test Result Pass The device is compliance with HAC limits specified in guidelines FCC 47CFR §20.19 and ANSI Standard ANSI C63.19. 2. Administration Data Sporton Lab is accredited to ISO 17025 by Taiwan Accreditation Foundation (TAF code: 1190) and the FCC designation No. TW1190 under the FCC 2.948(e) by Mutual Recognition Agreement (MRA) in FCC test. Testing Laboratory Test Site SPORTON INTERNATIONAL INC. No.52, Hwa Ya 1st Rd., Hwa Ya Technology Park, Kwei-Shan District, Taoyuan City, Taiwan (R.O.C.) Test Site Location TEL: +886-3-327-3456 FAX: +886-3-328-4978 Sporton Site No. : Test Site No. SAR04-HY Applicant Company Name Sony Mobile Communications Inc. Address 4-12-3 Higashi-Shinagawa, Shinagawa-ku, Tokyo, 140-0002, Japan Manufacturer Company Name Sony Mobile Communications Inc. Address 4-12-3 Higashi-Shinagawa, Shinagawa-ku, Tokyo, 140-0002, Japan SPORTON INTERNATIONAL INC. Page Number : 4 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 3. General Information 3.1 Description of Equipment Under Test (EUT) Wireless Frequency Operating Mode Technologies ．GSM Voice 850 Multi-Slot Class: ．GPRS (GMSK) GSM 1900 Class 33 ．EDGE (8PSK) Does device support dual transfer mode? (Yes) ．AMR / RMC 12.2Kbps Band 2 ．HSDPA W-CDMA (UMTS) Band 4 ．HSUPA Band 5 ．DC-HSDPA Band 2 Band 4 Band 5 ．QPSK Band 7 ．16QAM LTE Band 12 ．64QAM Band 13 ．Rel 11 Carrier Aggregation Downlink only Band 17 Band 25 Band 66 ．11b 2.4GHz: ．11g 2412 MHz ~ 2462 MHz ．11n (HT20) ．11ac (VHT20) ．11a WiFi 5GHz: ．11n (HT20) 5.2GHz: 5180 MHz ~ 5240 MHz ．11n (HT40) 5.3GHz: 5260 MHz ~ 5320 MHz ．11ac (VHT20) 5.5GHz: 5500 MHz ~ 5720 MHz ．11ac (VHT40) 5.8GHz: 5745 MHz ~ 5825 MHz ．11ac (VHT80) Bluetooth 2.4GHz ．BR / EDR / LE NFC 13.56MHz ．ASK Remark : 1. This product have two samples, the different between these samples are had memory / usb connector / fingerprint / battery / speaker / antenna switch, sample1 as the main tested, sample2 will spot-check worst case of GSM and WCDMA Band found in sample1. SPORTON INTERNATIONAL INC. Page Number : 5 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 3.2 Air Interface and Operating Mode Air C63.19 Simultaneous Power Interface Band MHz Type OTT Tested Transmitter Reduction 850 WLAN, BT NA No VO Yes GSM 1900 WLAN, BT NA No GPRS/EDGE DT No WLAN, BT Yes No 850 WLAN, BT NA No 1750 VO Yes WLAN, BT NA No WCDMA 1900 WLAN, BT NA No HSPA DT No WLAN, BT Yes No Band 2 WLAN, BT No Band 4 WLAN, BT No Band 5 WLAN, BT No Band 7 WLAN, BT No LTE Band 12 DT No WLAN, BT Yes No Band 13 WLAN, BT No Band 17 WLAN, BT No Band 25 WLAN, BT No Band 66 WLAN, BT No 2450 GSM, WCDMA,LTE No 5200 GSM, WCDMA,LTE No WLAN 5300 DT No GSM, WCDMA,LTE Yes No 5500 GSM, WCDMA,LTE No 5800 GSM, WCDMA,LTE No BT 2450 DT No GSM, WCDMA,LTE NA No VO=CMRS Voice Service DT=Digital Transport 3.3 Applied Standards ‧ FCC CFR47 Part 20.19 ‧ ANSI C63.19 2011-version ‧ FCC KDB 285076 D01 HAC Guidance v04r01 ‧ FCC KDB 285076 D02 T Coil testing for CMRS IP v02 SPORTON INTERNATIONAL INC. Page Number : 6 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 4. HAC T-Coil 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 C63.19, and A handset is considered hearing aid compatible for inductive coupling if it meets a rating of at least T3. For inductive coupling, the wireless communication devices should be measured as below. 1) Magnetic signal strength in the audio band 2) Magnetic signal frequency response through the audio band 3) Magnetic signal to noise 4.1 T-Coil Coupling Field Intensity When measured as specified in this standard, the T-Coil signal shall be ≥ –18 dB (A/m) at 1 kHz, in a 1/3 octave band filter for all orientations. 4.2 T-Coil Frequency Response The frequency response of the perpendicular component of the magnetic field, measured in 1/3 octave bands, shall follow the response curve specified in this sub-clause, over the frequency range 300 Hz to 3000 Hz. Figure 4.1 and Figure 4.2 provide the boundaries as a function of frequency. These response curves are for true field-strength measurements of the T-Coil signal. Thus, the 6 dB/octave probe response has been corrected from the raw readings. Fig. 4.1 Magnetic field frequency response for WDs with field strength≤-15dB at 1 KHz SPORTON INTERNATIONAL INC. Page Number : 7 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B Fig. 4.2 Magnetic field frequency response for WDs with a field that exceeds –15 dB(A/m) at 1 kHz SPORTON INTERNATIONAL INC. Page Number : 8 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 4.3 T-Coil Signal Quality Categories This section provides the signal quality requirement for the intended T-Coil signal from a WD. Only the RF immunity of the hearing aid is measured in T-Coil mode. It is assumed that a hearing aid can have no immunity to an interference signal in the audio band, which is the intended reception band for this mode. A device is assessed beginning by determining the category of the RF environment in the area of the T-Coil source. The RF measurements made for the T-Coil evaluation are used to assign the category T1 through T4. The limitation is given in Table 4.3. This establishes the RF environment presented by the WD to a hearing aid. Telephone parameters WD signal quality Category ((signal + noise) to noise ratio in dB) Category T1 0 to 10 dB Category T2 10 to 20 dB Category T3 20 to 30 dB Category T4 > 30 dB Table 4.3 T-Coil Signal Quality Categories SPORTON INTERNATIONAL INC. Page Number : 9 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 5. Measurement System Specification 5.1 System Configuration Fig. 5.1 T-Coil setup with HAC Test Arch and AMCC 5.2 Test Arch Phantom Construction : Enables easy and well defined positioning of the phone and validation dipoles as well as simple teaching of the robot. Dimensions : 370 x 370 x 370 mm Fig. 5.2 Photo of Arch Phantom SPORTON INTERNATIONAL INC. Page Number : 10 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 5.3 AMCC The Audio Magnetic Calibration coil is a Helmholtz Coil designed for calibration of the AM1D probe. The two horizontal coils generate a homogeneous magnetic field in the z direction. The DC input resistance is adjusted by a series resistor to approximately 50Ohm, and a shunt resistor of 10 Ohm permits monitoring the current with a scale of 1:10. Port description Signal Connector Resistance Coil In BNC typically 50 Ohm Coil Monitor BNO 10Ohm ±1%(100mV corresponding to 1 A/m) Specification Dimensions 370 x 370 x 196 mm, according to ANSI C63.19 5.4 AM1D Probe The AM1D probe is an active probe with a single sensor. It is fully RF-shielded and has a rounded tip 6mm in diameter incorporating a pickup coil with its center offset 3mm from the tip and the sides. The symmetric signal preamplifier in the probe is fed via the shielded symmetric output cable from the AMMI with a 48V “phantom” voltage supply. The 7-pin connector on the back in the axis of the probe does not carry any signals. It is mounted to the DAE for the correct orientation of the sensor. If the probe axis is tilted 54.7 degree from the vertical, the sensor is approximately vertical when the signal connector is at the underside of the probe (cable hanging downwards). Specification Frequency Range 0.1 ~ 20 kHz (RF sensitivity <-100dB, fully RF shielded ) Sensitivity <-50dB A/m @ 1 kHz Pre-amplifier 40 dB, symmetric Dimensions Tip diameter/ length: 6/ 290 mm, sensor according to ANSI-C63.19 SPORTON INTERNATIONAL INC. Page Number : 11 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 5.5 AMMI Fig. 5.3 AMMI front panel The Audio Magnetic Measuring Instrument (AMMI) is a desktop 19-inch unit containing a sampling unit, a waveform generator for test and calibration signals, and a USB interface. Specification Sampling rate 48 kHz/24 bit Dynamic range 85 dB Test signal generation User selectable and predefined (vis PC) Calibration Auto-calibration/full system calibration using AMCC with monitor output Dimensions 482 x 65 x 270 mm 5.6 System Hardware DAE The data acquisition electronics (DAE) consists of a highly sensitive electrometer-grade preamplifier with auto-zeroing, a channel and gain-switching multiplexer, a fast 16 bit AD-converter and a command decoder and control logic unit. Robot The SPEAG DASY system uses the high precision robots (DASY5: TX90XL) type from Stäubli SA (France). For the 6-axis controller system, the robot controller version (DASY5: CS8c) from Stäubli is used. SPORTON INTERNATIONAL INC. Page Number : 12 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 5.7 Cabling of System for GSM / UMTS The principal cabling of the T-Coil setup is shown in Fig. 5.4 All cables provided with the basic setup have a length of approximately 5 m. Fig. 5.4 T-Coil setup cabling SPORTON INTERNATIONAL INC. Page Number : 13 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 5.8 Test Equipment List Calibration Manufacturer Name of Equipment Type/Model Serial Number Last Cal. Due Date SPEAG Audio Magnetic 1D Field Probe AM1DV3 3130 Nov. 16, 2016 Nov. 15, 2017 SPEAG Data Acquisition Electronics DAE4 1399 Nov. 17, 2016 Nov. 16, 2017 SPEAG Data Acquisition Electronics DAE4 778 May. 22, 2017 May. 21, 2018 SPEAG Audio Magnetic Calibration Coil AMCC 1049 NCR NCR SPEAG Audio Measuring Instrument AMMI 1041 NCR NCR Gencom Thermometer TE1 TM685-1 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 CMU200 116457 May. 23, 2017 May. 22, 2018 Table 5.1 Test Equipment List Note: 1. NCR: “No-Calibration Required” SPORTON INTERNATIONAL INC. Page Number : 14 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 5.9 Probe Calibration in AMCC The probe sensitivity at 1 kHz is 0.06556 V/(A/m) (-23.66 dBV/(A/m)) was calibrated by AMCC coil for verification of setup performance. The evaluated probe sensitivity was able to be compared to the calibration of the AM1D probe. The frequency response and sensitivity was shown in Fig. 5.5. The probe signal is represented after application of an ideal integrator. The green curve represents the current though the AMCC, the blue curve the integrated probe signal. The DIFFERENCE between the two curves is equivalent to the frequency response of the probe system and shows the characteristics. The probe/system complies with the frequency response and linearity requirements in C63.19 according to the SPEAG’s calibrated report as shown in Annex B (AM1D probe: SPAM100AF) (1)The frequency response has been tested within +/- 0.5 dB of ideal differentiator from 100 Hz to 10 kHz. (2)The linearity has also been tested within 0.1dB from 5 dB below limitation to 16 dB above noise level. The AMCC coil is qualified according to certificate report, SDHACPO02A as shown in Annex B. Fig. 5.5 The frequency response and sensitivity of AM1D probe SPORTON INTERNATIONAL INC. Page Number : 15 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 5.10 Reference Input of Audio Signal Spectrum With the reference job "use as reference" in the beginning of a procedure, measure the spectrum of the current when applied to the AMCC, i.e. the input magnetic field spectrum, as shown below Fig. 5.6 and Fig. 5.7. For this, the delay of the window shall be set to a multiple of the signal period and at least 2s. From the measurement on the device, using the same signal, the postprocessor deducts the input spectrum, so the result represents the net EUT response. Fig. 5.6 Audio signal spectrum of the broadband signal (48kHz_voice_300Hz~3 kHz) Fig. 5.7 Audio signal spectrum of the narrowband signal (48kHz_voice_1kHz) SPORTON INTERNATIONAL INC. Page Number : 16 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 5.11 Establish Reference Level for GSM / UMTS According to ANSI C63.19:2011 section 7.4.2.1, the normal speech input level for HAC T-coil tests shall be set to -16 dBm0 for GSM and UMTS (WCDMA), and to -18 dBm0 for CDMA. This technical note shows a possibility to evaluate and set the correct level with the HAC T-Coil setup with a Rohde&Schwarz communication tester CMU200 with audio option B52 and B85. Establish a call from the CMU200 to a wireless device. Select CMU200 Network Bitstream ”Decoder Cal” to have a 1 kHz signal with a level of 3.14 dBm0 at the speech output. Run the measurement job and read the voltage level at the multi-meter display “Coil signal”. Read the RMS voltage corresponding to 3.14 dBm0 and note it. Determine the 1 kHz input level to generate the desired signal level of -16 dBm 0. Select CMU200 Network Bit stream “Codec Cal” to loop the input via the codec to the output. Run the measurement job (AMMI 1 kHz signal with gain 10 inserted) and read the voltage level at the multimeter display “Coil signal”. With Gain 10 setting, the measurement signal difference to the desired signal level of -16 dBm 0. GSM/UMTS Calculations< 2017/8/21> 3.14 dBm0 = -2.5 dBV  -16 dBm0 = -21.64 dBV Gain 10 = -19.86 dBV -21.64 - (-19.86) = -1.78 dB 10* [10 ^ ((-1.78) / 20)] = 10 x 0.815 = 8.15 Required Gain Factor = 10^(-RMS(dB)/20) Gain Setting = Required Gain Factor * 8.15 GSM/UMTS Calculations< 2017/10/9> 3.14 dBm0 = -2.48 dBV  -16 dBm0 = -21.62 dBV Gain 10 = -19.87 dBV -21.62 - (-19.87) = -1.75 dB 10* [10 ^ ((-1.75) / 20)] = 10 x 0.818 = 8.18 Required Gain Factor = 10^(-RMS(dB)/20) Gain Setting = Required Gain Factor * 8.18 Note: Calculated Gain Setting = Resulting Gain * Required Gain Factor The predefined signal types have the following differences / factors compared to the 1 kHz sine signal: < 2017/8/21> Peak to Required Calculated Adjusted Duration RMS Gain Gain Signal Type RMS Gain (s) (dB) (1) (2) (dB) Factor Setting Setting 48k_voice_1kHz 1 16.2 -12.7 4.33 35.28 35.36 GSM/UMTS 48k_voice_300Hz ~ 3kHz 2 21.6 -18.6 8.48 69.09 69.78 < 2017/10/9> Peak to Required Calculated Adjusted Duration RMS Signal Type RMS Gain Gain Gain (s) (dB) (1) (2) (dB) Factor Setting Setting 48k_voice_1kHz 1 16.2 -12.7 4.33 35.40 35.48 GSM/UMTS 48k_voice_300Hz ~ 3kHz 2 21.6 -18.6 8.48 69.33 70.03 Remark: (1) The gain for the specific signal shall typically be multiplied by this factor to achieve approx. the same level as for the 1kHz sine signal (2) If the measurement for each signal type with calculated gain setting does not meet the desired level, the gain setting will be manually adjusted until the desired level is obtained. SPORTON INTERNATIONAL INC. Page Number : 17 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 6. T-Coil Test Procedure 6.1 Test Process and Flow Chart Referenced to ANSI C63.19-2011, Section 7.4 This section describes the procedures used to measure the ABM (T-Coil) performance of the WD. In addition to measuring the absolute signal levels, the A-weighted magnitude of the unintended signal shall also be determined. To assure that the required signal quality is measured, the measurement of the intended signal and the measurement of the unintended signal must be made at the same location for each measurement position. In addition, the RF field strength at each measurement location must be at or below that required for the assigned category. Measurements shall not include undesired properties from the WD's RF field; therefore, use of a coaxial connection to a base station simulator or non-radiating load, there might still be RF leakage from the WD, which can interfere with the desired measurement. Pre-measurement checks should be made to avoid this possibility. All measurements shall be performed with the WD operating on battery power with an appropriate normal speech audio signal input level given in ANSI C63.19-2011 Table 7.1. If the device display can be turned off during a phone call, then that may be done during the measurement as well, Measurement shall be performed at two locations specified in ANSI C63.19-2011 A.3, with the correct probe orientation for a particular location, in a multistage sequence by first measuring the field intensity of the desired T-Coil signal the same location as the desired ABM or T-Coil signal (ABM1), and the ratio of desired to undesired magnetic components (ABM2) must be measured at the same location as the desired ABM or T-Coil signal (ABM1), and the ratio of desired to undesired ABM signals must be calculated. For the perpendicular field location, only the ABM1 frequency response shall be determined in a third measurement stage. The following steps summarize the basic test flow for determining ABM1 and ABM2. These steps assume that a sine wave or narrowband 1/3 octave signal can be used for the measurement of ABM1. a) A validation of the test setup and instrumentation may be performed using a TMFS or Helmholtz coil Measure the emissions and confirm that they are within the specified tolerance. b) Position the WD in the test setup and connect the WD RF connector to a base station simulator or a non-radiating load. Confirm that equipment that requires calibration has been calibrated, and that the noise level meets the requirements given in ANSI C63.19-2011 clause 7.3.1. c) The drive level to the WD ise set such that the reference input level specified in ANSI C63.19-2011 Table 7.1 is input to the base station simulator (or manufacturer's test mode equivalent) in 1 kHz, 1/3 octave band. This drive level shall be used for the T-Coil signal test (ABM1) at f = 1 kHz. Either a sine wave at 1025 Hz or a voice-like signal, band-limited to the 1 kHz 1/3 octave, as defined in ANSI C63.19-2011 clause 7.4.2, shall be used for the reference audio signal. If interference is found at 1025 Hz an alternative nearby reference audio signal frequency may be used. The same drive level shall be used for the ABM1 frequency response measurements at each 1/3 octave band center frequency. The WD volume control may be set at any level up to maximum, provided that a signal at any frequency at maximum modulation would not result in clipping or signal overload. SPORTON INTERNATIONAL INC. Page Number : 18 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B d) Determine the magnetic measurement locations for the WD device (A.3), if not already specified by the manufacturer, as described in ANSI C63.19-2011 clause 7.4.4.1.1 and 7.4.4.2. e) At each measurement location, measure and record the desired T-Coil magnetic signals (ABM1 at fi) as described in ANSI C63.19-2011 clause 7.4.4.2 in each individual ISO 266-1975 R10 standard 1/3 octave band. The desired audio band input frequency (fi) shall be centered in each 1/3 octave band maintaining the same drive level as determined in item c) and the reading taken for that band. Equivalent methods of determining the frequency response may also be employed, such as fast Fourier transform (FFT) analysis using noise excitation or input-output comparison using simulated speech. The full-band integrated probe output, as specified in D.9, may be used, as long as the appropriate calibration curve is applied to the measured result, so as to yield an accurate measurement of the field magnitude. (The resulting measurement shall be an accurate measurement in dB A/m.) All Measurements of the desired signal shall be shown to be of the desired signal and not of an undesired signal. This may be shown by turning the desired signal ON and OFF with the probe measuring the same location. If the scanning method is used the scans shall show that all measurement points selected for the ABM1 measurement meet the ambient and test system noise criteria in ANSI C63.19-2011 clause 7.3.1. f) At the measurement location for each orientation, measure and record the undesired broadband audio magnetic signal (ABM2) as specified in ANSI C63.19-2011 clause 7.4.4.4 with no audio signal applied (or digital zero applied, if appropriate) using A-weighting and the half-band integrator. Calculate the ratio of the desired to undesired signal strength (i,e., signal quality). g) Obtain the data from the postprocessor, SEMCAD, and determine the category that properly classifies the signal quality based on ANSI C63.19-2011 Table 8.5. SPORTON INTERNATIONAL INC. Page Number : 19 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B  Confirm calibration of test equipment  Configure and validate the test setup  Establish WD reference level  Scan for measurement locations  Position and orient probe  Measure desired audio band signal Strength  Measure undesired audio band signal Strength  Calculate signal strength  Calculate signal quality  Measure frequency response N Both y z locations measured? Y Intensity and frequency N response compliant ? Y  Determine and record signal quality category Done Fig. 6.1 Test Flow Chart SPORTON INTERNATIONAL INC. Page Number : 20 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 6.2 Description of EUT Test Position Fig.6.2 illustrate the references and reference plane that shall be used in a typical EUT emissions measurement. The principle of this section is applied to EUT with similar geometry. Please refer to Appendix C for the setup photographs.  The area is 5 cm by 5 cm.  The area is centered on the audio frequency output transducer of the EUT.  The area is in a reference plane, which is defined as the planar area that contains the highest point in the area of the phone that normally rests against the user’s ear. It is parallel to the centerline of the receiver area of the phone and is defined by the points of the receiver-end of the EUT handset, which, in normal handset use, rest against the ear.  The measurement plane is parallel to, and 10 mm in front of, the reference plane. Fig 6.2 A typical EUT reference and plane for T-Coil measurements SPORTON INTERNATIONAL INC. Page Number : 21 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 7. HAC T-Coil Test Results 7.1 Magnitude Result Telephone parameters WD signal quality Category ((signal + noise) to noise ratio in dB) Category T1 0 to 10 dB Category T2 10 to 20 dB Category T3 20 to 30 dB Category T4 > 30 dB The Table 7.1 shows testing result in position coordinates which are defined as deviation from earpiece center in millimeters. Signal strength measurement scans are presented in appendix A. ABM1 ABM2 Plot Probe SNR T Frequency Air Interface Mode Channel Sample (dB (dB No. Position (dB) Rating Response A/m) A/m) Axial (Z) 8.90 -29.85 38.75 T4 1 GSM850 Voice(speech codec/handset low) 189 Sample 1 PASS Transversal (Y) -1.95 -46.44 44.49 T4 Axial (Z) 9.75 -31.75 41.50 T4 2 GSM850 Voice(speech codec/handset low) 189 Sample 2 PASS Transversal (Y) -5.58 -46.33 40.75 T4 Axial (Z) 8.92 -34.21 43.13 T4 3 GSM1900 Voice(speech codec/handset low) 661 Sample 1 PASS Transversal (Y) -0.15 -46.87 46.72 T4 Axial (Z) 11.22 -45.68 56.90 T4 4 WCDMA II Voice(speech codec low) 9400 Sample 1 PASS Transversal (Y) 10.51 -45.37 55.88 T4 Axial (Z) 11.18 -45.12 56.30 T4 5 WCDMA IV Voice(speech codec low) 1413 Sample 1 PASS Transversal (Y) 9.57 -46.00 55.57 T4 Axial (Z) 11.40 -46.92 58.32 T4 6 WCDMA IV Voice(speech codec low) 1413 Sample 2 PASS Transversal (Y) 8.32 -46.92 55.24 T4 Axial (Z) 11.10 -45.92 57.02 T4 7 WCDMA V Voice(speech codec low) 4182 Sample 1 PASS Transversal (Y) 11.49 -45.86 57.35 T4 Remark: 1. There is no special HAC mode software on this EUT. 2. The detail frequency response results please refer to appendix A. 3. Test Engineer：Tom Jiang and Nick Yu SPORTON INTERNATIONAL INC. Page Number : 22 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 8. Uncertainty Assessment 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 8.2. Uncertainty Standard Standard Probability Ci Ci Error Description Value Divisor Uncertainty Uncertainty Distribution (ABM1) (ABM2) (±%) (ABM1) (ABM2) Probe Sensitivity Reference Level 3.0 Normal 1 1 1 ± 3.0 % ± 3.0 % AMCC Geometry 0.4 Rectangular √3 1 1 ± 0.2 % ± 0.2 % AMCC Current 1.0 Rectangular √3 1 1 ± 0.6 % ± 0.6 % Probe Positioning During 0.1 Rectangular √3 1 1 ± 0.1 % ± 0.1 % Calibrate Noise Contribution 0.7 Rectangular √3 0.0143 1 ± 0.0 % ± 0.4 % Frequency Slope 5.9 Rectangular √3 0.1 1 ± 0.3 % ± 3.5 % Probe System Repeatability / Drift 1.0 Rectangular √3 1 1 ± 0.6 % ± 0.6 % Linearity / Dynamic Range 0.6 Rectangular √3 1 1 ± 0.4 % ± 0.4 % Acoustic Noise 1.0 Rectangular √3 0.1 1 ± 0.1 % ± 0.6 % Probe Angle 2.3 Rectangular √3 1 1 ± 1.4 % ± 1.4 % Spectral Processing 0.9 Rectangular √3 1 1 ± 0.5 % ± 0.5 % Integration Time 0.6 Normal 1 1 5 ± 0.6 % ± 3.0 % Field Disturbation 0.2 Rectangular √3 1 1 ± 0.1 % ± 0.1 % Test Signal Reference Signal Spectral 0.6 Rectangular √3 0 1 ± 0.0 % ± 0.4 % Response Positioning Probe Positioning 1.9 Rectangular √3 1 1 ± 1.1 % ± 1.1 % Phantom Thickness 0.9 Rectangular √3 1 1 ± 0.5 % ± 0.5 % EUT Positioning 1.9 Rectangular √3 1 1 ± 1.1 % ± 1.1 % External Contributions RF Interference 0.0 Rectangular √3 1 0.3 ± 0.0 % ± 0.0 % Test Signal Variation 2.0 Rectangular √3 1 1 ± 1.2 % ± 1.2 % Combined Standard Uncertainty ± 4.1 % ± 6.1 % Coverage Factor for 95 % K=2 Expanded Uncertainty ± 8.1 % ± 12.3 % Table 8.2 Uncertainty Budget of audio band magnetic measurement SPORTON INTERNATIONAL INC. Page Number : 23 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z

FCC HAC T-Coil Test Report Report No. : HA760712-01B 9. 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 D01v04r01, “Equipment Authorization Guidance for Hearing Aid Compatibility”, Apr 2016 [3] FCC KDB 285076 D02v02, “Guidance for Performing T-Coil tests for Air Interfaces Supporting Voice over IP”, Apr 2016 [4] SPEAG DASY System Handbook SPORTON INTERNATIONAL INC. Page Number : 24 of 24 TEL : 886-3-327-3456 Report Issued Date : Nov. 02, 2017 FAX : 886-3-328-4978 Report Version : Rev. 01 FCC ID : PY7-57442Z


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Document Modified: 2017-11-15 19:49:19
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