Test Report_HAC T

FCC ID: ZNFH740

Test Report

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FCCID_2752741

HAC T-COIL SIGNAL TEST REPORT CLASS II PERMISSIVE CHANGE FCC CFR47 PART 20.19 ANSI C63.19-2011 For GSM/WCDMA/LTE PHABLET + BLUETOOTH, DTS/UNII a/b/g/n and NFC FCC ID: ZNFH740 Model Name: LG-H740, LGH740, H740 Report Number: 15I21442-S2V1 Issue Date: 9/10/2015 Prepared for LG ELECTRONICS MOBILECOMM USA, INC. 1000 SYLVAN AVENUE ENGLEWOOD CLIFFS, NEW JERSEY 07632, USA Prepared by UL VERIFICATION SERVICES INC. 47173 BENICIA STREET FREMONT, CA 94538, U.S.A. TEL: (510) 771-1000 FAX: (510) 661-0888 NVLAP LAB CODE 200065-0

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 Revision History Rev. Date Revisions Revised By V1 9/10/2015 Initial Issue -- Page 2 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 Table of Contents 1. Attestation of Test Results ............................................................................................................. 4 2. Test Methodology ........................................................................................................................... 5 3. Facilities and Accreditation ........................................................................................................... 5 4. Calibration and Uncertainty ........................................................................................................... 5 4.1. Measuring Instrument Calibration .............................................................................................. 5 4.2. Measurement Uncertainty .......................................................................................................... 6 5. Test Procedures for all Technologies ........................................................................................... 7 6. Audio Level and Gain Measurements............................................................................................ 9 7. T-coil Measurement Criteria ......................................................................................................... 10 7.1. Frequency Response ............................................................................................................... 10 7.2. Signal to Noise......................................................................................................................... 11 8. Device Under Test......................................................................................................................... 12 8.1. Air Interfaces and Operating Mode .......................................................................................... 12 9. HAC (T-coil) Test Results ............................................................................................................. 13 9.1. Worst Case T-Coil Test Plot..................................................................................................... 14 Appendix .............................................................................................................................................. 15 15I21442-S2V1 HAC_T_App A Setup Photo ...................................................................................... 15 15I21442-S2V1 HAC_T_App B Frequency Response & SNR Test Plots ........................................... 15 15I21442-S2V1 HAC_T_App C Probe Cal. Certificates ...................................................................... 15 Page 3 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 1. Attestation of Test Results Applicant Name LG ELECTRONICS MOBILECOMM USA, INC. FCC ID ZNFH740 Model Name LG-H740, LGH740, H740 FCC 47 CFR § 20.19 ANSI C63.19-2011 Applicable Standards KDB 285076 D01 HAC Guidance TCB workshop updates HAC Rating T4 Date Tested 8/4/2015 to 8/5/2015 Test Results Pass UL Verification Services Inc. tested the above equipment in accordance with the requirements set forth in the above standards. All indications of Pass/Fail in this report are opinions expressed by UL Verification Services Inc. based on interpretations and/or observations of test results. Measurement Uncertainties were not taken into account and are published for informational purposes only. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Note: The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. This document may not be altered or revised in any way unless done so by UL Verification Services Inc. and all revisions are duly noted in the revisions section. Any alteration of this document not carried out by UL Verification Services Inc. will constitute fraud and shall nullify the document. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, any agency of the Federal Government, or any agency of any government (NIST Handbook 150, Annex A). This report is written to support regulatory compliance of the applicable standards stated above. Approved & Released By: Prepared By: Devin Chang AJ Newcomer Senior Engineer Laboratory Technician UL Verification Services Inc. UL Verification Services Inc. Page 4 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 2. Test Methodology The tests documented in this report were performed in accordance with ANSI C63.19-2011 Methods of Measurement of Compatibility between Wireless Communications Devices and Hearing Aids and FCC published procedure KDB 285076 D01 HAC Guidance v04 and TCB workshop updates 3. Facilities and Accreditation The test sites and measurement facilities used to collect data are located at 47173 Benicia Street 47266 Benicia Street SAR Lab C SAR Lab 2 UL Verification Services Inc. is accredited by NVLAP, Laboratory Code 200065-0. 4. Calibration and Uncertainty 4.1. Measuring Instrument Calibration The measuring equipment used to perform the tests documented in this report has been calibrated in accordance with the manufacturers’ recommendations, and is traceable to recognized national standards. Name of Equipment Manufacturer Type/Model Serial No. Cal. Due Date Robot - Six Axes Stäubli TX90 XL N/A N/A Robot Remote Control Stäubli CS8C N/A N/A DASY5 Measurement Server SPEAG SEUMS001BA 1041 N/A Probe Alignment Unit SPEAG LB (V2) 261 N/A Audio Magnetic Measuring Ins.I SPEAG AMMI 1127 N/A Coordinating SystemI SPEAG AMCC N/A N/A ABM Probe SPEAG AM1DV3 3083 1/15/2016 Data Acquisition Electronics SPEAG DAE4 1259 1/14/2016 Radio Communication Tester R&S CMU 500 125236 1/19/2016 Page 5 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 4.2. Measurement Uncertainty Measurement Uncertainty for Audio Band Magnetic Measurement Uncertainty Probe c c Std. Unc. Error Description values (%) Dist. Div. AMB1 AMB2 AMB1 (%) AMB2 (%) Probe Sensitivity Reference level 3.0 N 1 1.00 1.00 3.00 3.00 AMCC geometry 0.4 R 1.73 1.00 1.00 0.23 0.23 AMCC current 0.6 R 1.73 1.00 1.00 0.35 0.35 Probe positioning during calibration 0.1 R 1.73 1.00 1.00 0.06 0.06 Noise contribution 0.7 R 1.73 0.01 1.00 0.01 0.40 Frequency slope 5.9 R 1.73 0.10 1.00 0.34 3.41 Probe System Repeatability / drift 1.0 R 1.73 1.00 1.00 0.58 0.58 Linearity / Dynamic range 0.6 R 1.73 1.00 1.00 0.35 0.35 Acoustic noise 1.0 R 1.73 0.10 1.00 0.06 0.58 Probe angle 2.3 R 1.73 1.00 1.00 1.33 1.33 Spectral processing 0.9 R 1.73 1.00 1.00 0.52 0.52 Integration time 0.6 N 1.00 1.00 5.00 0.60 3.00 Field disturbation 0.2 R 1.73 1.00 1.00 0.12 0.12 Test Signal Reference signal spectral response 0.6 R 1.73 0.00 1.00 0.00 0.35 Positioning Probe positioning 1.9 R 1.73 1.00 1.00 1.10 1.10 Phantom positioning 0.9 R 1.73 1.00 1.00 0.52 0.52 EUT positioning 1.9 R 1.73 1.00 1.00 1.10 1.10 External Contributions RF interference 0.0 R 1.73 1.00 1.00 0.00 0.00 Test signal variation 2.0 R 1.73 1.00 1.00 1.15 1.15 Combined Std. Uncertainty (ABM field) 4.02 6.08 Expanded Std. Uncertainty (%) 8.04 12.15 Notes for table 1. N - Nomal 2. R - Rectangular 3. Div. - Divisor used to obtain standard uncertainty Page 6 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 5. Test Procedures for all Technologies ANSI C63.19-2011, Section 7 This document 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. In order 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 all measurement positions. 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 may be necessary. However, even then with a coaxial connection to a base station simulator or non-radiating load there may still be RF leakage from the WD, which may interfere with the desired measurement. Pre-measurement checks should be made to avoid this possibility. All measurements shall be done with the WD operating on battery power with an appropriate normal speech audio signal input level given in 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. Measurements shall be performed at two locations specified in 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 (ABM1) that is useful to a hearing aid T-Coil. The 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 flow chart in Figure 7.3 illustrates this three-stage, two orientation process. 1 2 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 as shown in Figure 7.1 or Figure 7.2. Confirm that equipment that requires calibration has been calibrated, and that the noise level meets the requirements given in 7.3.1. c. The drive level to the WD is set such that the reference input level specified in Table 7.1 is input to the base station simulator (or manufacturer’s test mode equivalent) in the 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 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.46 The same drive level will 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. d. Determine the magnetic measurement locations for the WD device (A.3), if not already specified by the manufacturer, as described in 7.4.4.1.1 and 7.4.4.2. 1 Audio Band Magnetic signal - desired (ABM1): Measured quantity of the desired magnetic signal 2 Audio Band Magnetic signal - undesired (ABM2): Measured quantity of the undesired magnetic signal, such as interference from battery current and similar non-signal elements. Page 7 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 e. At each measurement location, measure and record the desired T-Coil magnetic signals (ABM1 at fi) as described in 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 or half-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 7.3.1. f. At the measurement location for each orientation, measure and record the undesired broadband audio magnetic signal (ABM2) as specified in 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 Table 8.5. Test Setup Diagram USB USB AMMI Audio Coil Coil Probe PC Out Out In In EUT Audio In/Out Coil Monitor AMCC Base Station Coil In ----- For Cal Gain Page 8 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 6. Audio Level and Gain Measurements Establish a call and obtain the 1 kHz speech output signal at 3.14 dBm0 from the CMU200 using the Network Bitstream “Decoder Cal.” Perform a measurement job to measure the RMS Coil Signal. Note the voltage level and calculate the desired level for GSM/W-CDMA and CDMA, which are, according to ANSI C63.19-2011 Section 7.4.2.1, -16 dBm0 and -18 dBm0 respectively. To determine the appropriate audio level, use the following equation, where x dBm0 is the measured RMS Coil Signal: W-CDMA/GSM No correction gain factors were measured for W-CDMA/GSM due to the Rohde & Schwarz CMW500, Serial No. 125236, hosting a calibrated audio board. The gains used to measure W-CDMA/GSM are set to 100. Page 9 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 7. T-coil Measurement Criteria 7.1. Frequency Response The frequency response of the axial component of the magnetic field, measured in 1/3 octave bands, shall follow the response curve, over the frequency range 300 Hz to 3000 Hz. Figure 8.1 and Figure 8.2 provide the boundaries for the specified 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. Page 10 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 7.2. Signal to Noise This specifies the signal-to-noise quality requirement for the intended T-Coil signal from a WD. The worst signal to noise of the two T-Coil signal measurements, as determined in Clause 7, shall be used to determine the T-Coil mode category per Table 8.5. 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. So, the only criterion that can be measured is the RF immunity in T-Coil Mode. This is measured using the same procedure as for the audio coupling mode and at the same levels as specified in 6.4. Measurement locations and reference plane to be used for the T-coil measurements Page 11 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 8. Device Under Test Normal operation Held to head Back Cover ☐ Normal Battery Cover ☒ Normal Battery Cover with NFC ☐ Wireless Charger Battery Cover ☐ Wireless Charger Battery Cover with NFC ☐ The rechargeable battery is not user accessible. 8.1. Air Interfaces and Operating Mode Voice over digital Air- Bands Type HAC Power Simultaneous but not Tested Transport OTT Interface (MHz) Transport Tested Reduction Capability 850 VO Yes Yes – Wi-Fi/BT NA NA GSM 1900 GPRS/EDGE DT No Yes – Wi-Fi/BT Yes NA 850 VO Yes Yes - Wi-Fi/BT NA NA W-CDMA 1900 HSPA DT No Yes – Wi-Fi/BT Yes NA 700 850 LTE - FDD 1700 VD1 No Yes – Wi-Fi/BT Yes NA 1900 2300 (B30) 2450 5200 Wi-Fi 5300 VD1 No Yes – WWAN/BT NA NA 5500 5800 BT 2450 DT No Yes – WWAN/Wi-Fi NA NA Type Transport Note: VO=CMRS Voice Service 1. No Associated T-Coil measurement has been made in DT – Digital Transport accordance with 285076 D02 T-Coil testing for CMRS IP. VD=CMRS IP Voice Service and Digital Transport Page 12 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 9. HAC (T-coil) Test Results ABM1 Channel and Probe Frequency BWC Factor ABM SNR Plots Mode ≥ -16 dB T-Rating Frequency Orientation Response (dB) (dB) page # (A/m) GSM850 z (axial) 12.77 0.16 48.21 T4 1 190 Voice Coder Pass 836.6 MHz Speechcodec Low y (Transversal) -5.97 0.16 40.31 T4 2 GSM1900 z (axial) 13.15 0.16 55.63 T4 3 661 Voice Coder Pass 1880 MHz Speechcodec Low y (Transversal) -1.76 0.16 46.92 T4 4 W-CDMA Band V z (axial) 11.52 0.16 54.57 T4 5 4183 Voice Coder Pass 836.6 MHz Speechcodec Low y (Transversal) 1.83 0.16 51.70 T4 6 W-CDMA Band II z (axial) 8.98 0.16 53.95 T4 7 9400 Voice Coder Pass 1880 MHz Speechcodec Low y (Transversal) 1.70 0.16 51.48 T4 8 Note: The radial longitudinal (x axis) measurements are no longer required per ANSI C63.19-2011 Page 13 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 9.1. Worst Case T-Coil Test Plot Test Laboratory: UL Verification Services Inc., SAR Lab 2 Date: 8/4/2015 GSM 850 Communication System: UID 0, GPRS-FDD (TDMA, GMSK, 1 slot) (0); Frequency: 836.6 MHz; Duty Cycle: 1:8.00018 Phantom section: TCoil Section DASY5 Configuration: - Probe: AM1DV3 - 3083; ; Calibrated: 1/15/2015 - Sensor-Surface: 0mm (Fix Surface) - Electronics: DAE4 Sn1259; Calibrated: 1/14/2015 - Phantom: HAC Test Arch with AMCC; Type: SD HAC P01 BB - Measurement SW: DASY52, Version 52.8 (7);SEMCAD X Version 14.6.10 (7164) T-Coil scan (scan for ANSI C63.19-2007 & 2011 compliance)/General Scans ch 190/y (transversal) 4.2mm 50 x 50/ABM Interpolated SNR(x,y,z) (121x121x1): Interpolated grid: dx=1.000 mm, dy=1.000 mm Signal Type: Audio File (.wav) 48k_voice_1kHz_1s.wav Output Gain: 100 Measure Window Start: 300ms Measure Window Length: 1000ms BWC applied: 0.16 dB Device Reference Point: 0, 0, -6.3 mm Cursor: ABM1/ABM2 = 40.31 dB ABM1 comp = -5.97 dBA/m BWC Factor = 0.16 dB Location: -8.3, -8.3, 3.7 mm 0 dB = 1.000 = 0.00 dB Page 14 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 15I21442-S2V1 Issue Date: 9/10/2015 Appendix Refer to separated files for the following appendixes 15I21442-S2V1 HAC_T_App A Setup Photo 15I21442-S2V1 HAC_T_App B Frequency Response & SNR Test Plots 15I21442-S2V1 HAC_T_App C Probe Cal. Certificates END OF REPORT Page 15 of 15 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc.


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Document Modified: 2015-09-14 11:37:03
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