T56XD1 Mobile Cellular Phone Test Report HAC T-Coil Motorola Mobility LLC

Motorola Mobility LLC Mobile Cellular Phone

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FCC HAC T-Coil Test Report
Report No. : HA7D2318B
Hearing Aid Compatibility (HAC)
T-Coil Test Report
APPLICANT
: Motorola Mobility LLC
EQUIPMENT
: Mobile Cellular Phone
BRAND NAME
: Motorola
MODEL NAME
: XT1925-6, XT1925-12,
XT1925DL
FCC ID
: IHDT56XD1
T-RATING
: T3
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.
TEL : 886-3-327-3456
FAX : 886-3-328-4978
FCC ID : IHDT56XD1
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: Rev. 01
FCC HAC T-Coil Test Report
Report No. : HA7D2318B
Table of Contents
1.
2.
3.
4.
5.
6.
Attestation of Test Summary..................................................................................................................................... 4
General Information ................................................................................................................................................... 5
Administration Data ................................................................................................................................................... 6
Applied Standards ..................................................................................................................................................... 6
Air Interface and Operating Mode............................................................................................................................. 7
Measurement standards for T-Coil ........................................................................................................................... 8
6.1
Frequency Response ....................................................................................................................................... 8
6.2
T-Coil Signal Quality Categories ....................................................................................................................... 8
7. T-Coil Test Procedure ................................................................................................................................................ 9
7.1
Test Flow Chart................................................................................................................................................10
7.2
Test Setup Diagram ......................................................................................................................................... 11
7.3
Description of EUT Test Position .....................................................................................................................13
8. Test Equipment List ..................................................................................................................................................14
9. T-Coil testing for CMRS Voice ..................................................................................................................................15
9.1
GSM Tests Results ..........................................................................................................................................15
9.2
UMTS Tests Results ........................................................................................................................................15
9.3
CDMA Tests Results ........................................................................................................................................16
9.4
VoLTE Tests Results ........................................................................................................................................17
9.5
VoWiFi Tests Results .......................................................................................................................................19
10. T-Coil testing for OTT VoIP Calling ..........................................................................................................................20
11. Uncertainty Assessment ..........................................................................................................................................22
12. References .................................................................................................................................................................23
Appendix A. Plots of T-Coil Measurement
Appendix B. DASY Calibration Certificate
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FCC HAC T-Coil Test Report
Report No. : HA7D2318B
Revision History
REPORT NO.
VERSION
HA7D2318B
Rev. 01
SPORTON INTERNATIONAL INC.
TEL : 886-3-327-3456
FAX : 886-3-328-4978
FCC ID : IHDT56XD1
DESCRIPTION
Initial issue of report
ISSUED DATE
Feb. 09, 2018
Page Number
: 3 of 23
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Report Version
: Rev. 01
FCC HAC T-Coil Test Report
Report No. : HA7D2318B
1. Attestation of Test Summary
Air Interface
GSM CMRS Voice
OTT over EDGE
Frequency
Magnetic
Response
Intensity
T4
Pass
Pass
GSM1900
T4
Pass
Pass
Band MHz
T-Rating
GSM850
EDGE850
T4
Pass
Pass
EDGE1900
T4
Pass
Pass
Band 2
T4
Pass
Pass
Band 4
T4
Pass
Pass
Band 5
T4
Pass
Pass
Band 2
T4
Pass
Pass
Band 4
T4
Pass
Pass
Band 5
T4
Pass
Pass
BC0
T4
Pass
Pass
UMTS CMRS Voice
OTT over UMTS
CDMA CMRS Voice
OTT over CDMA
VoLTE
OTT over LTE
VoWiFI
OTT over WiFi
BC1
T4
Pass
Pass
BC10
T4
Pass
Pass
BC0
T4
Pass
Pass
BC1
T4
Pass
Pass
BC10
T4
Pass
Pass
Band 2
T4
Pass
Pass
Band 4
T4
Pass
Pass
Band 5
T4
Pass
Pass
Band 7
T4
Pass
Pass
Band 12
T4
Pass
Pass
Band 13
T4
Pass
Pass
Band 17
T4
Pass
Pass
Band 25
T4
Pass
Pass
Band 26
T4
Pass
Pass
Band 30
T4
Pass
Pass
Band 66
T4
Pass
Pass
Band 38
T4
Pass
Pass
Band 41
T4
Pass
Pass
Band 2
T4
Pass
Pass
Band 38
T4
Pass
Pass
2450
T3
Pass
Pass
5200
T3
Pass
Pass
5300
T3
Pass
Pass
5500
T3
Pass
Pass
5800
T3
Pass
Pass
2450
T4
Pass
Pass
5300
T4
Pass
Pass
Date Tested
2018/1/18 ~ 2018/2/7
The device is compliance with HAC limits specified in guidelines FCC 47CFR §20.19 and ANSI Standard ANSI C63.19.
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2. General Information
Product Feature & Specification
Applicant Name
Motorola Mobility LLC
Equipment Name
Mobile Cellular Phone
Brand Name
Motorola
Model Name
XT1925-6, XT1925-12, XT1925DL
FCC ID
IHDT56XD1
HW Version
DVT1-B
SW Version
ali_n-userdebug 8.0.0 OPS27.55 1276 intcfg,test-keys
EUT Stage
Identical Prototype
Exposure category
General Population/Uncontrolled Exposure
GSM850: 824.2 MHz ~ 848.8 MHz
GSM1900: 1850.2 MHz ~ 1909.8 MHz
WCDMA Band II: 1852.4 MHz ~ 1907.6 MHz
WCDMA Band IV: 1712.4 MHz ~ 1752.6 MHz
WCDMA Band V: 826.4 MHz ~ 846.6 MHz
CDMA2000 BC0: 824.7 MHz ~ 848.31 MHz
CDMA 2000 BC1: 1851.25 MHz ~ 1908.75 MHz
CDMA 2000 BC10: 817.9 MHz ~ 823.1 MHz
LTE Band 2: 1850.7 MHz ~ 1909.3 MHz
LTE Band 4: 1710.7 MHz ~ 1754.3 MHz
LTE Band 5: 824.7 MHz ~ 848.3 MHz
LTE Band 7: 2502.5 MHz ~ 2567.5 MHz
LTE Band 12: 699.7 MHz ~ 715.3 MHz
LTE Band 13: 779.5 MHz ~ 784.5 MHz
LTE Band 17: 706.5 MHz ~ 713.5 MHz
LTE Band 25: 1850.7 MHz ~ 1914.3 MHz
LTE Band 26: 814.7 MHz ~ 848.3 MHz
LTE Band 30: 2307.5 MHz ~ 2312.5 MHz
LTE Band 38: 2572.5 MHz ~ 2617.5 MHz
LTE Band 41: 2498.5 MHz ~ 2687.5 MHz
LTE Band 66: 1710.7 MHz ~ 1779.3 MHz
WLAN 2.4GHz Band: 2412 MHz ~ 2462 MHz
WLAN 5.2GHz Band: 5180 MHz ~ 5240 MHz
WLAN 5.3GHz Band: 5260 MHz ~ 5320 MHz
WLAN 5.5GHz Band: 5500 MHz ~ 5700MHz
WLAN 5.8GHz Band: 5745 MHz ~ 5825 MHz
Bluetooth: 2402 MHz ~ 2480 MHz
GSM/GPRS/EGPRS
RMC/AMR 12.2Kbps
HSDPA
HSUPA
DC-HSDPA
CDMA2000 : 1xRTT/1xEv-Do(Rev.0)/1xEv-Do(Rev.A)
LTE: QPSK, 16QAM, 64QAM
802.11a/b/g/n HT20/HT40
Bluetooth v4.2 with LE
Frequency Band
Mode
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3. 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
Test Site Location
Test Site No.
SPORTON INTERNATIONAL INC.
No.52, Hwa Ya 1st Rd., Hwa Ya Technology Park, Kwei-Shan District, Taoyuan City,
Taiwan (R.O.C.)
TEL: +886-3-327-3456
FAX: +886-3-328-4978
Sporton Site No. :
SAR04-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
4. Applied Standards
‧
FCC CFR47 Part 20.19
‧
ANSI C63.19-2011
‧
FCC KDB 285076 D01 HAC Guidance v05
‧
FCC KDB 285076 D02 T Coil testing v03
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5. Air Interface and Operating Mode
Air
Interface
Band MHz
GSM850
GSM
GSM1900
EDGE850
EDGE1900
Type
C63.19
Tested
VO
Yes
VD
Yes
850
UMTS
1750
850
CDMA
1900
EVDO
VO
Yes
LTE
(TDD)
WLAN, BT
CMRS Voice
WLAN, BT
Google Duo(1)
WLAN, BT
VD
Yes
VO
Yes
VD
Yes
WLAN, BT
CMRS Voice
No
No
No
No
No
Google Duo(1)
WLAN, BT
WLAN, BT
CMRS Voice
WLAN, BT
Google Duo(1)
WLAN, BT
No
No
No
No
Band 2
WLAN, BT
No
Band 4
WLAN, BT
No
Band 5
WLAN, BT
No
Band 7
WLAN, BT
No
Band 13
WLAN, BT
VD
Yes
VoLTE
Google Duo(1)
WLAN, BT
No
No
Band 17
WLAN, BT
Band 25
WLAN, BT
No
Band 26
WLAN, BT
No
Band 30
WLAN, BT
No
Band 66
WLAN, BT
Band 38
WLAN, BT
Band 41
VD
Yes
WLAN, BT
5500
5800
No
No
No
5200
5300
No
No
VoLTE
Google Duo(1)
2450
Wi-Fi
Power
Reduction
No
WLAN, BT
Band 12
LTE
(FDD)
Name of Voice
Service
Transmitter
WLAN, BT
1900
HSPA
Simultaneous
VD
Yes
GSM,WCDMA,CDMA,LTE
VoWiFi
Google Duo(1)
On
On
On
On
BT
2450
DT
No
GSM,WCDMA,CDMA,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. For protocols not listed in Table 7.1 of ANSI C63.19-2011 or the ANSI C63.19-2011 VoLTE interpretation, the average
speech level of −20 dBm0 should be used.
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6. Measurement standards for T-Coil
6.1 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 1.1 and Figure 1.2 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. 1.1 Magnetic field frequency response for WDs with field strength≤-15dB at 1 KHz
Fig. 1.2 Magnetic field frequency response for WDs with a field that exceeds –15 dB(A/m) at 1 kHz
6.2 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 1. 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 1 T-Coil Signal Quality Categories
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7. T-Coil Test Procedure
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.
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.
f. 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.)
g. 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.
h. 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).
i. 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.
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7.1 Test Flow Chart
Report No. : HA7D2318B
Fig. 2 T-Coil Signal Test flowchart
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FCC HAC T-Coil Test Report
7.2 Test Setup Diagram
Report No. : HA7D2318B
General Note:
1. Define the all applicable input audio level as below according to C63 and KDB 285076 D02v03:
- GSM input level: -16dBm0
- UMTS input level: -16dBm0
- CDMA input level: -18dBm0
- VoLTE input level: -16dBm0
- VoWiFi input level: -20dBm0
- OTT VoIP input Level: -20dBm0
2. For GSM / UMTS / CDMA test setup and input level, the correct input level definition is via a
communication tester CMU200’s “Decoder Cal” and “Codec Cal” with audio option B52 and B85 to set the
correct audio input levels.
3. CMU200 is able to output 1kHz audio signal equivalent to 3.14dBm0 at "Decoder Cal." confuguration, the
signal reference is used to adjust the AMMI gain setting to reach -16dBm0 for GSM/UMTS and -18dBm0
for CDMA. CMW500 input is calibrated and the relation between the analog input voltage and the internal
level in dBm0 can be determined
4. The test setup used for VoLTE over IMS and VoWiFi over IMS is via the callbox of CMW500 for T-coil
measurement, The data application unit of the CMW500 was used to simulate the IP multimedia
subsystem server. The CMW500 can be manually configured to ensure and control the speech input level
result is -16dBm0 for VoLTE, -20dBm0 for VoWiFi when the device during the IMS connection.
5. The test setup used for OTT VoIP call is via the data application unit on CMW500 connection to the
Internet, also connection to the other auxiliary VoIP unit which is used to configure the audio codec and
bit rate and also monitor the audio input level of -20dBm0.
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FCC HAC T-Coil Test Report
1.
2.
Report No. : HA7D2318B
The Required gain factor for the specific signal shall typically be multiplied by this factor to achieve approx. the same
level as for the 1kHz sine signal
The below calculation formula is an example and showing how to determine the input level for the air interface for the
device.

Audio Level at -16dBm0 = ((-16dBm0) – (3.14dBm0)) + X dBv
Calculated Gain at -16dBm0 = 10(( audio level at -16dBm0 – Y dBm0) / 20) * 10
Gatting setting at -16dBm0 = required gain factor * calculated gain
Gain Value
20* log(gain)
AMCC Coil In
(linear)
dB
(dBv RMS)
-2.39
10
20
-19.93
8.32
18.40
-21.53
Signal Type
1kHz sine
48k_voice_1kHz
48k_voice_300Hz ~ 3kHz
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Duration
(s)
Peak to RMS
(dB)
16.2
21.6
RMS
(dB)
-12.7
-18.6
Level
dBm0
3.14
-14.40
-16
Required Gain
Factor
4.33
8.48
Calculated
Gain Setting
8.32
36.02
70.53
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FCC HAC T-Coil Test Report
7.3 Description of EUT Test Position
Report No. : HA7D2318B
Fig.3 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.3 A typical EUT reference and plane for T-Coil measurements
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8. Test Equipment List
Calibration
Manufacturer
Name of Equipment
Type/Model
Serial Number
SPEAG
Audio Magnetic 1D Field Probe
AM1DV3
3093
SPEAG
Audio Magnetic 1D Field Probe
AM1DV3
3130
Nov. 21, 2017
Nov. 20, 2018
SPEAG
Data Acquisition Electronics
DAE4
1326
Sep. 15, 2017
Sep. 14, 2018
SPEAG
Data Acquisition Electronics
DAE4
854
May. 02, 2017
May. 01, 2018
SPEAG
Audio Magnetic Calibration Coil
AMCC
1049
NCR
NCR
SPEAG
Audio Measuring Instrument
AMMI
1041
NCR
NCR
SPEAG
Test Arch Phantom
N/A
N/A
NCR
NCR
Last Cal.
Due Date
May. 19, 2017
May. 18, 2018
SPEAG
Phone Positioner
N/A
N/A
NCR
NCR
Gencom
Thermometer
TE1
TM685-1
Mar. 21, 2017
Mar. 20, 2018
Gencom
Thermometer
TE1
TM685-2
Mar. 21, 2017
Mar. 20, 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
Note:
1. NCR: “No-Calibration Required”
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Page Number
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Report Issued Date : Feb. 09, 2018
Report Version
: Rev. 01
FCC HAC T-Coil Test Report
Report No. : HA7D2318B
9. T-Coil testing for CMRS Voice
General Note:
1. The middle channel of each frequency band is used for T-Coil testing according ANSI C63.19 2011.
2. For VoLTE or VoWiFi radio configuration investigation is choose either one codec and an investigation
was performed on all frequency band, data rates and modulations and RB configuration to determine the
radio configuration to be used for testing, the following tests results which the worst case configuration
would be remarked to be used for the testing for the handset.
3. Choose worst case from radio configuration investigation. After investigation was performed to determine
the audio codec configuration to be used for testing, the following tests results which the worst case
codec would be remarked to be used for the testing for the handset.
4. According to 3GPP 36.211 Table 4.2-2, the TDD LTE power class 3 supports uplink-downlink
configuration 0 to 6, an investigation was performed to determine the worst-case uplink-downlink
configuration and with the FDD LTE worst case radio configuration.
5. For VoWiFi codec selection, due to the same with VoLTE codec configuration, therefore, worst codec is
choose from VoLTE codec investigation to be used for others air interfaces testing of VoWiFi.
9.1 GSM Tests Results

Plot
No.
Air Interface
Mode
Channel
GSM850
CMRS Voice
189
GSM1900
CMRS Voice
661
Axial (Z)
-1.49
-38.59
Signal
Quality
(dB)
37.10
Transversal (Y)
-8.96
-46.32
37.36
T4
Axial (Z)
-4.08
-42.24
38.16
T4
Transversal (Y)
-7.31
-44.85
37.54
T4
Probe
Position
ABM1
ABM2
dB (A/m) dB (A/m)
Rating
T4
Frequency
Response
PASS
PASS
9.2 UMTS Tests Results

Codec
AMR 4.75Kbps
AMR 7.95Kbps
AMR 12.2Kbps
ABM 1 (dBA/m)
-1.79
-0.21
1.24
ABM 2 (dBA/m)
-41.45
-41.09
-39.72
Freq. Response
Pass
Pass
Pass
Signal Quality (dB)
39.66
40.88
40.96
Orientation
Band / Channel
Axial
Band 5 / 4182

Plot
No.
Air Interface
Mode
Channel
WCDMA II
AMR 4.75Kbps
9400
WCDMA IV
AMR 4.75Kbps
1413
WCDMA V
AMR 4.75Kbps
4182
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Axial (Z)
-1.00
-43.90
Signal
Quality
(dB)
42.90
Transversal (Y)
-4.76
-46.64
41.88
T4
Axial (Z)
-0.99
-43.39
42.40
T4
Transversal (Y)
-4.78
-46.75
41.97
T4
Axial (Z)
-1.01
-43.58
42.57
T4
Transversal (Y)
-4.79
-46.20
41.41
T4
Probe
Position
ABM1
ABM2
dB (A/m) dB (A/m)
Rating
T4
Frequency
Response
PASS
PASS
PASS
Page Number
: 15 of 23
Report Issued Date : Feb. 09, 2018
Report Version
: Rev. 01
FCC HAC T-Coil Test Report
Report No. : HA7D2318B
9.3 CDMA Tests Results

Codec
RC1 SO68
RC3 SO68
RC4 SO68
ABM 1 (dBA/m)
3.00
-0.71
-1.69
ABM 2 (dBA/m)
-39.93
-44.1
-45.03
Freq. Response
Pass
Pass
Pass
Signal Quality (dB)
42.93
43.39
43.34
Orientation
Band / Channel
Axial
BC0 / 384

Plot
No.
Air Interface
Mode
Channel
CDMA BC0
RC1 SO68
384
CDMA BC1
RC1 SO68
600
CDMA BC10
RC1 SO68
580
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Axial (Z)
-4.38
-51.10
Signal
Quality
(dB)
46.72
Transversal (Y)
-7.66
-48.65
40.99
T4
Probe
Position
ABM1
ABM2
dB (A/m) dB (A/m)
Rating
T4
Axial (Z)
-4.09
-51.25
47.16
T4
Transversal (Y)
-8.01
-49.96
41.95
T4
Axial (Z)
-4.44
-51.37
46.93
T4
Transversal (Y)
-7.58
-49.15
41.57
T4
Frequency
Response
PASS
PASS
PASS
Page Number
: 16 of 23
Report Issued Date : Feb. 09, 2018
Report Version
: Rev. 01
FCC HAC T-Coil Test Report
9.4 VoLTE Tests Results
Report No. : HA7D2318B

Air Interface
Bandwidth
(MHz)
Modulation
RB size
RB offset
LTE B2
LTE B2
LTE B2
LTE B2
LTE B2
LTE B2
LTE B2
LTE B2
LTE B2
20
20
20
20
15
10
1.4
QPSK
QPSK
QPSK
16QAM
QPSK
QPSK
QPSK
QPSK
QPSK
50
100
18900
18900
18900
18900
18900
18900
18900
18900
18900
LTE B38
LTE B38
LTE B38
LTE B38
LTE B38
LTE B38
LTE B38
20
20
20
20
20
20
20
QPSK
QPSK
QPSK
QPSK
QPSK
QPSK
QPSK
38000
38000
38000
38000
38000
38000
38000
-2.14
-2.05
-2.03
-2.05
-2.08
-2.09
-2.04
-2.02
-1.97
-36.65
-37.02
-37.14
-36.63
-37.85
-37.40
-36.90
-37.12
-37.04
Signal
Quality
(dB)
34.51
34.97
35.11
34.58
35.77
35.31
34.86
35.10
35.07
-1.63
-1.53
-1.48
-1.66
-1.49
-1.47
-1.50
-39.28
-39.46
-39.82
-39.35
-39.91
-39.81
-39.68
37.65
37.93
38.34
37.69
38.42
38.34
38.18
UL-DL
ABM1
channel Configuration dB (A/m)
ABM2
dB (A/m)

Codec
WB AMR
4.75Kbps
WB AMR
6.60Kbps
NB AMR
12.2Kbps
NB AMR
23.85Kbps
ABM 1 (dBA/m)
-3.28
-2.90
-3.13
-4.00
ABM 2 (dBA/m)
-39.54
-39.26
-39.38
-40.22
Freq. Response
Pass
Pass
Pass
Pass
Signal Quality (dB)
36.26
36.36
36.25
36.22
Orientation
Band / BW /
Channel
Axial
B2 / 20M / 18900

Codec
EVS SWB
9.6Kbps
EVS SWB
13.2Kbps
EVS WB
5.9Kbps
EVS WB
13.2Kbps
EVS NB
5.9Kbps
EVS NB
13.2Kbps
ABM 1 (dBA/m)
-3.71
-3.60
-3.36
-3.34
-3.21
-2.87
ABM 2 (dBA/m)
-40.33
-39.87
-39.77
-39.76
-39.72
-39.20
Freq. Response
Pass
Pass
Pass
Pass
Pass
Pass
Signal Quality (dB)
-3.71
36.27
36.41
36.42
36.51
36.33
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Orientation
Band / BW /
Channel
Axial
B2 / 20M /
18900
Page Number
: 17 of 23
Report Issued Date : Feb. 09, 2018
Report Version
: Rev. 01
FCC HAC T-Coil Test Report
Report No. : HA7D2318B

Plot
Air Interface
No.
Mode
Channel
LTE Band 2
20M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
18900
10
LTE Band 4
20M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
20175
11
LTE Band 5
10M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
20525
12
LTE Band 7
20M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
21100
13 LTE Band 12
10M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
23095
14 LTE Band 13
10M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
23230
15 LTE Band 17
10M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
23790
16 LTE Band 25
20M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
26340
17 LTE Band 26
15M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
26865
18 LTE Band 30
10M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
27710
19 LTE Band 66
20M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
132322
20 LTE Band 38
20M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
38000
21 LTE Band 41
20M_QPSK_1RB_0Offset_EVS WB
23.85Kbps
40620
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ABM1 ABM2 Signal
Frequency
dB
dB Quality
Rating Response
(A/m) (A/m) (dB)
Axial (Z)
-7.85 -46.56 38.71
T4
PASS
Transversal (Y) -12.90 -48.98 36.08
T4
Probe
Position
-43.32
36.52
T4
Transversal (Y) -13.62 -50.51
Axial (Z)
36.89
T4
-43.55
37.23
T4
Transversal (Y) -12.66 -48.48
35.82
T4
-43.62
37.34
T4
Transversal (Y) -13.65 -50.64
36.99
T4
-46.81
38.17
T4
Transversal (Y) -13.97 -50.72
36.75
T4
-44.17
36.27
T4
Transversal (Y) -12.75 -48.93
36.18
T4
-40.99
35.26
T4
Transversal (Y) -12.76 -49.21
36.45
T4
-42.07
36.28
T4
Transversal (Y) -11.86 -48.41
36.55
T4
-41.52
35.65
T4
Transversal (Y) -12.88 -50.26
37.38
T4
-42.33
36.50
T4
Transversal (Y) -11.94 -47.71
35.77
T4
-45.95
37.57
T4
Transversal (Y) -14.29 -50.00
35.71
T4
-42.15
40.65
T4
Transversal (Y) -10.22 -49.60
39.38
T4
-41.81
40.67
T4
Transversal (Y) -10.14 -49.06
38.92
T4
Axial (Z)
Axial (Z)
Axial (Z)
Axial (Z)
Axial (Z)
Axial (Z)
Axial (Z)
Axial (Z)
Axial (Z)
Axial (Z)
Axial (Z)
-6.80
-6.32
-6.28
-8.64
-7.90
-5.73
-5.79
-5.87
-5.83
-8.38
-1.50
-1.14
PASS
PASS
PASS
PASS
PASS
PASS
PASS
PASS
PASS
PASS
PASS
PASS
Page Number
: 18 of 23
Report Issued Date : Feb. 09, 2018
Report Version
: Rev. 01
FCC HAC T-Coil Test Report
9.5 VoWiFi Tests Results
Report No. : HA7D2318B

Air Interface
Bandwidth
802.11b
802.11b
802.11g
802.11g
ABM1
dB (A/m)
-8.12
ABM2
dB (A/m)
-35.92
Signal Quality
(dB)
27.80
-8.06
-36.38
28.32
6M
-7.98
-36.14
28.16
54M
-8.13
-36.79
28.66
-8.22
-36.86
28.64
MCS7
-8.16
-36.44
28.28
6M
40
-7.71
-39.17
31.46
Data rate
channel
20
1M
20
11M
20
20
802.11n
20
MCS0
802.11n
20
802.11a
20
802.11a
20
54M
40
-6.28
-38.81
32.53
802.11an-HT20
20
MCS0
40
-6.26
-39.07
32.81
802.11an-HT20
20
MCS7
40
-6.24
-39.07
32.83
802.11an-HT40
40
MCS0
40
-6.25
-38.94
32.69
802.11an-HT40
40
MCS7
40
-6.26
-38.07
31.81

Plot
No.
Air Interface
Mode
Channel
22
2.4GHz WLAN
802.11b_1M_EVS WB
23.85Kbps
23
5.2GHz WLAN
802.11a_6M_EVS WB
23.85Kbps
40
24
5.3GHz WLAN
802.11a_6M_EVS WB
23.85Kbps
60
25
5.5GHz WLAN
802.11a_6M_EVS WB
23.85Kbps
124
26
5.8GHz WLAN
802.11a_6M_EVS WB
23.85Kbps
149
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Axial (Z)
-8.65
-36.46
Signal
Quality
(dB)
27.81
Transversal (Y)
-16.37
-43.89
27.52
T3
Axial (Z)
-8.46
-39.45
30.99
T4
Transversal (Y)
-15.17
-43.82
28.65
T3
Axial (Z)
-7.91
-42.55
34.64
T4
Transversal (Y)
-15.50
-44.12
28.62
T3
Probe
Position
ABM1
ABM2
dB (A/m) dB (A/m)
Rating
T3
Axial (Z)
-7.95
-38.66
30.71
T4
Transversal (Y)
-15.30
-44.17
28.87
T3
Axial (Z)
-8.18
-39.04
30.86
T4
Transversal (Y)
-15.58
-43.67
28.09
T3
Frequency
Response
Pass
Pass
Pass
Pass
Pass
Page Number
: 19 of 23
Report Issued Date : Feb. 09, 2018
Report Version
: Rev. 01
FCC HAC T-Coil Test Report
Report No. : HA7D2318B
10. T-Coil testing for OTT VoIP Calling
General Notes:
1. The google Duo VoIP call software is pre-installed on this device and head-to-ear scenario should be
consideration, the google Duo only support OPUS audio codec and support 6Kbpa to 75Kbps bitrate.
According to KDB 285076 D02, all air interfaces via a data connection with google Duo VoIP calling would
be consideration to be tested.
2. The test setup used for OTT VoIP call is via the data application unit on CMW500 connection to the
Internet, also connection to the other auxiliary VoIP unit which is used to configure the audio codec and
bit rate and also monitor the audio input level of -20dBm0
3. According to VoLTE and VoWiFi radio configuration investigation, the worst case radio configuration is
used for OTT over LTE and OTT over WiFi testing.
4. Due to OTT service and CMRS IP service are all be established over the internet protocol for the voice
service, and on both services use the identical RF air interface for the WIFI and LTE, therefore according
to VOLTE and VoWiFi summary test results, the worst case air interface is used for OTT T-Coil testing
5. For OTT VoIP codec investigation test reduction, due to all air interface have the same codec
configuration, therefore, the codec investigation was choose UMTS B2 to determine the audio codec
configuration to be used for others air interfaces testing.

ABM 1 (dBA/m)
Bitrate
6Kbps
10.25
Bitrate
40Kbps
9.17
Bitrate
75Kbps
10.77
Codec
ABM 2 (dBA/m)
-35.69
-34.34
-32.85
Freq. Response
Pass
Pass
Pass
Signal Quality (dB)
45.94
43.51
43.62
Orientation
Band / Channel
Axial
UMTS B2 / 9400

Plot
No.
Air Interface
Mode
Channel
27
GSM850
EDGE 2 Tx slots
189
28
GSM1900
EDGE 2 Tx slots
661
29
WCDMA II
HSPA
9400
30
WCDMA IV
HSPA
1413
31
WCDMA V
HSPA
4182
32
CDMA BC0
EVOD
384
33
CDMA BC1
EVOD
600
34
CDMA BC10
EVOD
580
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Axial (Z)
ABM1
dB
(A/m)
9.90
ABM2
dB
(A/m)
-33.92
Signal
Quality
(dB)
43.82
Transversal (Y)
4.81
-38.35
43.16
T4
Axial (Z)
9.85
-33.92
43.77
T4
Transversal (Y)
3.12
-39.71
42.83
T4
Probe
Position
Rating
T4
Axial (Z)
9.17
-34.34
43.51
T4
Transversal (Y)
3.80
-39.13
42.93
T4
Axial (Z)
10.03
-33.66
43.69
T4
Transversal (Y)
3.50
-39.76
43.26
T4
Axial (Z)
8.93
-34.90
43.83
T4
Transversal (Y)
2.98
-39.87
42.85
T4
Axial (Z)
9.14
-34.40
43.54
T4
Transversal (Y)
2.30
-40.53
42.83
T4
Axial (Z)
10.75
-33.09
43.84
T4
Transversal (Y)
3.83
-39.17
43.00
T4
Axial (Z)
9.79
-34.33
44.12
T4
Transversal (Y)
3.77
-39.75
43.52
T4
Frequency
Response
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Page Number
: 20 of 23
Report Issued Date : Feb. 09, 2018
Report Version
: Rev. 01
FCC HAC T-Coil Test Report
Plot
No.
Air Interface
Mode
Channel
35
LTE Band 17
10M_QPSK_1RB_0offset
23790
36
LTE Band 41
20M_QPSK_1RB_0offset
40620
37
2.4GHz WLAN
802.11b 11Mbps
38
5.3GHz WLAN
802.11a 6Mbps
157
Report No. : HA7D2318B
Axial (Z)
ABM1
dB
(A/m)
10.65
ABM2
dB
(A/m)
-33.21
Signal
Quality
(dB)
43.86
Transversal (Y)
1.90
-41.32
43.22
T4
Probe
Position
Rating
T4
Axial (Z)
10.49
-39.65
50.14
T4
Transversal (Y)
1.80
-45.99
47.79
T4
Axial (Z)
5.22
-38.54
43.76
T4
Transversal (Y)
-2.32
-46.53
44.21
T4
Axial (Z)
9.30
-40.83
50.13
T4
Transversal (Y)
0.54
-45.48
46.02
T4
Frequency
Response
Pass
Pass
Pass
Pass
Remark:
1. Phone Condition: Mute on; Backlight off; Max Volume
2. The detail frequency response results please refer to appendix A.
3. Test Engineer:Aaron Chen and Steven Chang
SPORTON INTERNATIONAL INC.
TEL : 886-3-327-3456
FAX : 886-3-328-4978
FCC ID : IHDT56XD1
Page Number
: 21 of 23
Report Issued Date : Feb. 09, 2018
Report Version
: Rev. 01
FCC HAC T-Coil Test Report
Report No. : HA7D2318B
11. 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.
Error Description
Uncertainty
Value
(±%)
Probability
Distribution
Reference Level
3.0
Normal
AMCC Geometry
0.4
AMCC Current
Probe Positioning During
Calibrate
Noise Contribution
1.0
Frequency Slope
Ci
(ABM1)
Ci
(ABM2)
Standard
Uncertainty
(ABM1)
Standard
Uncertainty
(ABM2)
± 3.0 %
± 3.0 %
Rectangular
√3
± 0.2 %
± 0.2 %
Rectangular
√3
± 0.6 %
± 0.6 %
0.1
Rectangular
√3
± 0.1 %
± 0.1 %
0.7
Rectangular
√3
0.0143
± 0.0 %
± 0.4 %
5.9
Rectangular
√3
0.1
± 0.3 %
± 3.5 %
Repeatability / Drift
1.0
Rectangular
√3
± 0.6 %
± 0.6 %
Linearity / Dynamic Range
0.6
Rectangular
√3
± 0.4 %
± 0.4 %
Acoustic Noise
1.0
Rectangular
√3
0.1
± 0.1 %
± 0.6 %
Probe Angle
2.3
Rectangular
√3
± 1.4 %
± 1.4 %
Spectral Processing
0.9
Rectangular
√3
± 0.5 %
± 0.5 %
Integration Time
0.6
Normal
± 0.6 %
± 3.0 %
Field Disturbation
0.2
Rectangular
√3
± 0.1 %
± 0.1 %
√3
± 0.0 %
± 0.4 %
Divisor
Probe Sensitivity
Probe System
Test Signal
Reference Signal Spectral
Response
0.6
Rectangular
Probe Positioning
1.9
Rectangular
√3
± 1.1 %
± 1.1 %
Phantom Thickness
0.9
Rectangular
√3
± 0.5 %
± 0.5 %
EUT Positioning
1.9
Rectangular
√3
± 1.1 %
± 1.1 %
Positioning
External Contributions
RF Interference
0.0
Rectangular
√3
0.3
± 0.0 %
± 0.0 %
Test Signal Variation
2.0
Rectangular
√3
± 1.2 %
± 1.2 %
± 4.1 %
± 6.1 %
Combined Standard Uncertainty
Coverage Factor for 95 %
Expanded Uncertainty
K=2
± 8.1 %
± 12.3 %
Table 8.2 Uncertainty Budget of audio band magnetic measurement
SPORTON INTERNATIONAL INC.
TEL : 886-3-327-3456
FAX : 886-3-328-4978
FCC ID : IHDT56XD1
Page Number
: 22 of 23
Report Issued Date : Feb. 09, 2018
Report Version
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FCC HAC T-Coil Test Report
Report No. : HA7D2318B
12. 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.
TEL : 886-3-327-3456
FAX : 886-3-328-4978
FCC ID : IHDT56XD1
Page Number
: 23 of 23
Report Issued Date : Feb. 09, 2018
Report Version
: Rev. 01
Download: T56XD1 Mobile Cellular Phone Test Report HAC T-Coil Motorola Mobility LLC
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