Test Report

FCC ID: ZNFQ720TS

Test Report

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FCCID_4287756

                                        PCTEST ENGINEERING LABORATORY, INC.
                                                        7185 Oakland Mills Road, Columbia, MD 21046 USA
                                                              Tel. 410.290.6652 / Fax 410.290.6654
                                                                      http://www.pctest.com

                                                               MEASUREMENT REPORT
                                                                       FCC PART 15.225 NFC

  Applicant Name:                                                                                Date of Testing:
  LG Electronics USA, Inc.                                                                       2/28 - 5/2/2019
  1000 Sylvan Avenue                                                                             Test Site/Location:
  Englewood Cliffs, NJ 07632                                                                     PCTEST Lab. Columbia, MD, USA
  United States                                                                                  Test Report Serial No.:
                                                                                                 1M1904010049-10.ZNF


  FCC ID:                                                            ZNFQ720TS
  APPLICANT:                                                         LG Electronics USA, Inc.




  Application Type:                                                  Certification
  Model:                                                             LM-Q720TS
  Additional Model(s):                                               LMQ720TS, Q720TS, LM-Q720MS, LMQ720MS, Q720MS
  EUT Type:                                                          Portable Handset
  Frequency:                                                         13.56MHz
  FCC Classification:                                                Low Power Communications Device Transmitter (DXX)
  FCC Rule Part(s):                                                  Part 15 Subpart C (15.225)
  Test Procedure(s):                                                 ANSI C63.10-2013




  This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report
  and was tested in accordance with the measurement procedures specified in ANSI C63.10-2013. Test results reported herein relate only to
  the item(s) tested.

  I attest to the accuracy of data. All measurements reported herein were performed by me or were made under my supervision and are
  correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the
  qualifications of all persons taking them.




                                                                                MEASUREMENT REPORT                                                              Approved by:
FCC ID: ZNFQ720TS
                                                                                   (CERTIFICATION)                                                              Quality Manager
Test Report S/N:                       Test Dates:                    EUT Type:
                                                                                                                                                                Page 1 of 28
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© 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


                                               T A B L E                       O F             C O N T E N T S

        1.0         Introduction ...................................................................................................................................... 3
                    1.1      Scope..................................................................................................................................................... 3
                    1.2      PCTEST Test Location .......................................................................................................................... 3
                    1.3      Test Facility / Accreditations .................................................................................................................. 3
        2.0         PRODUCT INFORMATION ............................................................................................................. 4
                    2.1      Equipment Description ........................................................................................................................... 4
                    2.2      Device Capabilities ................................................................................................................................ 4
                    2.3      Test Configuration ................................................................................................................................. 4
                    2.4      EMI Suppression Device(s)/Modifications.............................................................................................. 4
        3.0         DESCRIPTION OF TEST ................................................................................................................ 5
                    3.1      Evaluation Procedure ............................................................................................................................ 5
                    3.2      AC Line Conducted Emissions .............................................................................................................. 5
                    3.3      Radiated Emissions ............................................................................................................................... 6
                    3.4      Environmental Conditions ...................................................................................................................... 6
        4.0         ANTENNA REQUIREMENTS .......................................................................................................... 7
        5.0         MEASUREMENT UNCERTAINTY .................................................................................................. 8
        6.0         TEST EQUIPMENT CALIBRATION DATA ...................................................................................... 9
        7.0         TEST DATA ................................................................................................................................... 10
                    7.1      Summary ............................................................................................................................................. 10
                    7.2      Occupied Bandwidth Measurement ..................................................................................................... 11
                    7.3      Frequency Stability Test Data .............................................................................................................. 13
                    7.4      In-Band Radiated Spurious Emission Measurements .......................................................................... 16
                    7.5      Radiated Spurious Emission Measurements, Out-of-Band .................................................................. 19
                    7.6      Line Conducted Measurement Data .................................................................................................... 25
        8.0         CONCLUSION ............................................................................................................................... 28




                                                                                MEASUREMENT REPORT                                                                Approved by:
FCC ID: ZNFQ720TS
                                                                                   (CERTIFICATION)                                                                Quality Manager
Test Report S/N:                       Test Dates:                    EUT Type:
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© 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


1.0              INTRODUCTION

1.1           Scope
Measurement and determination of electromagnetic emissions (EMC) of radio frequency devices including
intentional and/or unintentional radiators for compliance with the technical rules and regulations of the Federal
Communications Commission and the Innovation, Science and Economic Development Canada.

1.2           PCTEST Test Location
These measurement tests were conducted at the PCTEST Engineering Laboratory, Inc. facility located at 7185
Oakland Mills Road, Columbia, MD 21046. The measurement facility is compliant with the test site requirements
specified in ANSI C63.4-2014.

1.3           Test Facility / Accreditations
Measurements were performed at PCTEST Engineering Lab located in Columbia, MD 21046, U.S.A.

•     PCTEST is an ISO 17025-2005 accredited test facility under the American Association for Laboratory
      Accreditation (A2LA) with Certificate number 2041.01 for Specific Absorption Rate (SAR), Hearing Aid
      Compatibility (HAC) testing, where applicable, and Electromagnetic Compatibility (EMC) testing for FCC and
      Innovation, Science, and Economic Development Canada rules.

•     PCTEST TCB is a Telecommunication Certification Body (TCB) accredited to ISO/IEC 17065-2012 by A2LA
      (Certificate number 2041.03) in all scopes of FCC Rules and ISED Standards (RSS).

•     PCTEST facility is a registered (2451B) test laboratory with the site description on file with ISED.




                                                                                MEASUREMENT REPORT                                                              Approved by:
FCC ID: ZNFQ720TS
                                                                                   (CERTIFICATION)                                                              Quality Manager
Test Report S/N:                       Test Dates:                    EUT Type:
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© 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


2.0              PRODUCT INFORMATION


2.1           Equipment Description
The Equipment Under Test (EUT) is the LG Portable Handset FCC ID: ZNFQ720TS. The test data contained in
this report pertains only to the emissions due to the NFC transmitter of the EUT.

Test Device Serial No.: 00819

2.2           Device Capabilities
This device contains the following capabilities:

850/1900 CDMA/EvDO Rev0/A, 1x Advanced (BC0, BC1, BC10), 850/1900 GSM/GPRS/EDGE, 850/1700/1900
WCDMA/HSPA, Multi-band LTE, 802.11b/g/n WLAN, 802.11a/n/ac UNII, Bluetooth (1x, EDR, LE), NFC

2.3           Test Configuration
The EUT was set to continuously transmit at 13.56MHz. This was performed using manufacturer software loaded
on the phone and a passive RFID tag to allow for continuous transmission. This device was tested in accordance
with the guidance of ANSI C63.10-2013. See Sections 3.2 and 3.3 of this test report for a description of the AC
line conducted emissions and radiated emissions test setups, respectively.

2.4           EMI Suppression Device(s)/Modifications
No EMI suppression device(s) were added and no modifications were made during testing.




                                                                                MEASUREMENT REPORT                                                              Approved by:
FCC ID: ZNFQ720TS
                                                                                   (CERTIFICATION)                                                              Quality Manager
Test Report S/N:                       Test Dates:                    EUT Type:
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© 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


3.0              DESCRIPTION OF TEST

3.1           Evaluation Procedure
The measurement procedure described in the American National Standard of Procedures for Compliance Testing
of Unlicensed Wireless Devices (ANSI C63.10-2013) was used in the measurement of the EUT.

Deviation from measurement procedure…………………………………………….....................................None

3.2           AC Line Conducted Emissions
The line-conducted facility is located inside a 10'x16'x9' shielded enclosure. The shielded enclosure is
manufactured by ETS Lindgren RF Enclosures. The shielding effectiveness of the shielded room is in accordance
with MIL-Std-285 or NSA 65-5. A 1m x 1.5m wooden table 80cm high is placed 40cm away from the vertical wall
and 80cm away from the sidewall of the shielded room. Two 10kHz-30MHz, 50/50H Line-Impedance
Stabilization Networks (LISNs) are bonded to the shielded room floor. Power to the LISNs is filtered by external
high-current high-insertion loss power line filters. The external power line filter is an ETS Lindgren Model LPRX-
4X30 (100dB Attenuation, 14kHz-18GHz) and the two EMI/RFI filters are ETS Lindgren Model LRW-2030-S1
(100dB Minimum Insertion Loss, 14kHz – 10GHz). These filters attenuate ambient signal noise from entering the
measurement lines. These filters are also bonded to the shielded enclosure.

The EUT is powered from one LISN and the support equipment is powered from the second LISN. If the EUT is a
DC-powered device, power will be derived from the source power supply it normally will be powered from and this
supply line(s) will be connected to the second LISN. All interconnecting cables more than 1 meter were shortened
to a 1 meter length by non-inductive bundling (serpentine fashion) and draped over the back edge of the test
table. All cables were at least 40cm above the horizontal reference groundplane. Power cables for support
equipment were routed down to the second LISN while ensuring that that cables were not draped over the second
LISN.

Sufficient time for the EUT, support equipment, and test equipment was allowed in order for them to warm up to
their normal operating condition. The RF output of the LISN was connected to the spectrum analyzer and
exploratory measurements were made to determine the frequencies producing the maximum emission from the
EUT. The spectrum was scanned from 150kHz to 30MHz with a spectrum analyzer. The detector function was set
to peak mode for exploratory measurements while the bandwidth of the analyzer was set to 10kHz. The EUT,
support equipment, and interconnecting cables were arranged and manipulated to maximize each emission. Once
the worst case emissions have been identified, the one EUT cable configuration/arrangement and mode of
operation that produced these emissions is used for final measurements on the same test site. The analyzer is set
to CISPR quasi-peak and average detectors with a 9kHz resolution bandwidth for final measurements.

Line conducted emissions test results are shown in Section 7.6. The EMI Receiver mode of the Agilent MXE was
used to perform AC line conducted emissions testing.




                                                                                MEASUREMENT REPORT                                                              Approved by:
FCC ID: ZNFQ720TS
                                                                                   (CERTIFICATION)                                                              Quality Manager
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© 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


3.3           Radiated Emissions
The radiated test facilities consisted of an indoor 3 meter semi-anechoic chamber used for final measurements
and exploratory measurements, when necessary. The measurement area is contained within the semi-anechoic
chamber which is shielded from any ambient interference. The test site inside the chamber is a 6m x 5.2m
elliptical, obstruction-free area in accordance with Figure 5.7 of Clause 5 in ANSI C63.4-2014. Absorbers are
arranged on the floor between the turn table and the antenna mast in such a way so as to maximize the reduction
of reflections for measurements above 1GHz. An 80cm tall test table made of Styrodur is placed on top of the turn
table. For measurements above 1GHz, an additional Styrodur pedestal is placed on top of the test table to bring
the total table height to 1.5m.

For all measurements, the spectrum was scanned through all EUT azimuths and from 1 to 4 meter receive
antenna height using a broadband antenna from 30MHz up to the upper frequency shown in 15.33 depending on
the highest frequency generated or used in the device or on which the device operates or tunes. For frequencies
above 1GHz, linearly polarized double ridge horn antennas were used. For frequencies below 30MHz, a
calibrated loop antenna was used. When exploratory measurements were necessary, they were performed at 1
meter test distance inside the semi-anechoic chamber using broadband antennas, broadband amplifiers, and
spectrum analyzers to determine the frequencies and modes producing the maximum emissions. Sufficient time
for the EUT, support equipment, and test equipment was allowed in order for them to warm up to their normal
operating condition. The test set-up was placed on top of the 1 x 1.5 meter table. The EUT, support equipment,
and interconnecting cables were arranged and manipulated to maximize each emission. Appropriate precaution
was taken to ensure that all emissions from the EUT were maximized and investigated. The system configuration,
mode of operation, turntable azimuth, and receive antenna height was noted for each frequency found.

Final measurements were made in the semi-anechoic chamber using calibrated, linearly polarized broadband and
horn antennas. The test setup was configured to the setup that produced the worst case emissions. The spectrum
analyzer was set to investigate all frequencies required for testing to compare the highest radiated disturbances
with respect to the specified limits. The turntable containing the EUT was rotated through 360 degrees and the
height of the receive antenna was varied 1 to 4 meters and stopped at the azimuth and height producing the
maximum emission. Each emission was maximized by changing the orientation of the EUT through three
orthogonal planes and changing the polarity of the receive antenna, whichever produced the worst-case
emissions.

3.4           Environmental Conditions
The temperature is controlled within range of 15oC to 35oC. The relative humidity is controlled within range of 10%
to 75%. The atmospheric pressure is monitored within the range 86-106kPa (860-1060mbar).




                                                                                MEASUREMENT REPORT                                                              Approved by:
FCC ID: ZNFQ720TS
                                                                                   (CERTIFICATION)                                                              Quality Manager
Test Report S/N:                       Test Dates:                    EUT Type:
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© 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


4.0           ANTENNA REQUIREMENTS

 Excerpt from §15.203 of the FCC Rules/Regulations:
 “An intentional radiator antenna shall be designed to ensure that no antenna other than that furnished by the
 responsible party can be used with the device. The use of a permanently attached antenna or of an antenna that
 uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of
 this section.”


      •   The antenna of the EUT are permanently attached.

      •   This unit was tested with its standard battery.


 Conclusion:
 The EUT complies with the requirement of §15.203.




                                                                                 MEASUREMENT REPORT                                                              Approved by:
  FCC ID: ZNFQ720TS
                                                                                    (CERTIFICATION)                                                              Quality Manager
  Test Report S/N:                      Test Dates:                    EUT Type:
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 © 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
 microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
 rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


5.0              MEASUREMENT UNCERTAINTY

The measurement uncertainties shown below were calculated in accordance with the requirements of
ANSI C63.10-2013. All measurement uncertainty values are shown with a coverage factor of k = 2 to indicate a
95% level of confidence. The measurement uncertainty shown below meets or exceeds the UCISPR measurement
uncertainty values specified in CISPR 16-4-2 and, thus, can be compared directly to specified limits to determine
compliance.


                                                  Contribution                                        Expanded Uncertainty (±dB)

                                      Line Conducted Disturbance                                                            3.09

                                    Radiated Disturbance (<1GHz)                                                            4.98




                                                                                MEASUREMENT REPORT                                                              Approved by:
FCC ID: ZNFQ720TS
                                                                                   (CERTIFICATION)                                                              Quality Manager
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© 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


  6.0              TEST EQUIPMENT CALIBRATION DATA

Test Equipment Calibration is traceable to the National Institute of Standards and Technology (NIST).
Measurements antennas used during testing were calibrated in accordance to the requirements of ANSI C63.5-
2017.

    Manufacturer                    Model                                   Description                             Cal Date        Cal Interval        Cal Due         Serial Number
       Agilent                    N9038A                             MXE EMI Receiver                              6/11/2018           Annual          6/11/2019         MY51210133
    Com-Power                      AL-130                       9kHz - 30MHz Loop Antenna                          10/10/2017          Biennial        10/10/2019          121034
       Espec                      ESX-2CA                          Environmental Chamber                           4/28/2018           Annual          4/28/2019           17620
    ETS-Lindgren                 3816/2NM                  Line Impedance Stabilization Network                    6/18/2018           Biennial        6/18/2020           114451
     Pasternack                   NMLC-2                   Line Conducted Emissions Cable (NM)                     8/23/2018           Annual          8/23/2019          NMLC-2
  Rohde & Schwarz                  ESU40                         EMI Test Receiver (40GHz)                          8/9/2018           Annual           8/9/2019           100348
  Rohde & Schwarz                  ESU26                        EMI Test Receiver (26.5GHz)                        5/21/2018           Annual          5/21/2019           100342
       Sunol                        JB5                         Bi-Log Antenna (30M - 5GHz)                        4/19/2018           Biennial        4/19/2020          A051107
                                             Table 6-1. Annual Test Equipment Calibration Schedule

  Note:

  For equipment listed above that has a calibration date or calibration due date that falls within the test date range,
  care was taken to ensure that this equipment was used after the calibration date and before the calibration due
  date.




                                                                                  MEASUREMENT REPORT                                                              Approved by:
  FCC ID: ZNFQ720TS
                                                                                     (CERTIFICATION)                                                              Quality Manager
  Test Report S/N:                       Test Dates:                    EUT Type:
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  © 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
  All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
  microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
  rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


7.0              TEST DATA

7.1           Summary

          Company Name:                                   LG Electronics USA, Inc.
          FCC ID:                                         ZNFQ720TS
          FCC Classification:                             Low Power Communications Device Transmitter (DXX)
          Frequencies Examined:                           13.56MHz

    FCC Part                                                                                                                          Test                 Test
                         RSS Section(s)                  Test Description                            Test Limit                                                           Reference
    Section(s)                                                                                                                      Condition             Result

 2.1049                  RSS-Gen [6.6]              Occupied Bandwidth                      N/A                                                             PASS            Section 7.2

                                                                                            15,848µV/m @ 30m
                                                                                            13.553 – 13.567 MHz

                                                                                            334µV/m @ 30m
 15.225                                                                                      13.410 – 13.553 MHz
                         RSS-210 [B.6]              In-Band Emissions                                                                                       PASS            Section 7.4
 (a)(b)(c)                                                                                  13.567 – 13.710 MHz
                                                                                                                                    RADIATED
                                                                                            106µV/m @ 30m
                                                                                            13.110 – 13.410 MHz
                                                                                            13.710 – 14.010 MHz

                                                                                            Emissions outside of the
                                                                                            specified band (13.110 –
 15.225 (d)                                                                                 14.010 MHz) must meet
                         RSS-Gen [8.9]              Out-of-Band Emissions                                                                                   PASS            Section 7.5
 15.209                                                                                     the radiated limits
                                                                                            detailed in 15.209 (RSS-
                                                                                            Gen [8.9])

                                                    Frequency Stability                     ± 0.01% of Operating                   Temperature
 15.225 (e)              RSS-210 [B.6]                                                                                                                      PASS            Section 7.3
                                                    Tolerance                               Frequency                               Chamber


                                                    AC Conducted Emissions                  < FCC 15.207 limits                      LINE
 15.207                  RSS-Gen [8.8]                                                                                                                      PASS            Section 7.6
                                                    150kHz – 30MHz                          (RSS-Gen)                             CONDUCTED

                                                               Table 7-1. Summary of Test Results

Note:

This unit was tested with its standard battery.




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All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


7.2           Occupied Bandwidth Measurement
§2.1049; RSS-Gen (6.6)

Test Overview and Limit

The bandwidth is measured with a spectrum analyzer connected to the receive antenna while the EUT is
operating in transmission mode at the appropriate frequency.

Test Procedure Used

ANSI C63.10-2013 – Section 6.9.2

Test Settings

      1. Spectrum analyzer frequency is set to the nominal EUT channel center frequency.

      2. RBW = 1 – 5% OBW

      3. VBW ≥ 3 x RBW

      4. Reference level set to keep signal from exceeding maximum input mixer level for linear operation.

      5. Detector = Peak

      6. Trace mode = max hold

      7. Sweep = auto couple

      8. The trace was allowed to stabilize



Test Notes

None.




                                                                                                                     Agilent
                                                                EUT
                                                                                                                 Spectrum Analyzer


                                                  Figure 7-1. Test Instrument & Measurement Setup




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microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
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                                                      Frequency                                                     Bandwidth

                                                       13.56MHz                                                      1718.2kHz
                                                      Table 7-2. Occupied Bandwidth Measurement




                                                                       Figure 7-2. Bandwidth Plot




                                                                                MEASUREMENT REPORT                                                              Approved by:
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© 2019 PCTEST Engineering Laboratory, Inc.                                                                                                                                    V 9.0 02/01/2019
All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from PCTEST Engineering Laboratory, Inc. If you have any questions about this international copyright or have an enquiry about obtaining additional
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


7.3           Frequency Stability Test Data
§15.225; RSS-210 (B.6)

Test Overview and Limit

Frequency stability testing is performed in accordance with the guidelines of ANSI C63.10-2013. The frequency
stability of the transmitter is measured by:

a.)       Temperature: The temperature is varied from -20°C to +50°C in 10°C increments using an environmental
          chamber.

b.)       Primary Supply Voltage: The primary supply voltage is varied from 85% to 115% of the nominal value for
          non hand-carried battery and AC powered equipment. For hand-carried, battery-powered equipment,
          primary supply voltage is reduced to the battery operating end point which shall be specified by the
          manufacturer.

For Part 15.225, the frequency stability of the transmitter shall be maintained within ±0.01% of the center
frequency.

Test Procedure Used

ANSI C63.10-2013 – Section 6.8

Test Settings

      1. The carrier frequency of the transmitter is measured at room temperature (20°C to provide a reference).
      2. The equipment is turned on in a “standby” condition for fifteen minutes before applying power to the
         transmitter. Measurement of the carrier frequency of the transmitter is made within one minute after
         applying power to the transmitter.
      3. Frequency measurements are made at 10°C intervals ranging from -20°C to +50°C. A period of at least
         one half-hour is provided to allow stabilization of the equipment at each temperature level.

Test Setup

The EUT was connected via an RF cable to a spectrum analyzer with the EUT placed inside an environmental
chamber.

Test Notes

None.




                                                                                MEASUREMENT REPORT                                                              Approved by:
FCC ID: ZNFQ720TS
                                                                                   (CERTIFICATION)                                                              Quality Manager
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Frequency Stability Test Data
§15.225; RSS-210 (B.6)



                           OPERATING FREQUENCY:                                             13,560,000                        Hz
                               REFERENCE VOLTAGE:                                                3.87                          VDC

                                           DEVIATION LIMIT:                          ± 0.01 % = 1356Hz


                               VOLTAGE                      POWER               TEMP              FREQUENCY                   Freq. Dev.            Deviation
                                 (%)                         (VDC)               (o C)               (Hz)                        (Hz)                  (%)

                                   100 %                       3.87           + 20 (Ref)             13,560,184                      184            0.0013569
                                   100 %                                          - 30               13,559,976                      -24            -0.0001770
                                   100 %                                          - 20               13,560,301                      301            0.0022198

                                   100 %                                          - 10               13,559,927                      -73            -0.0005383
                                   100 %                                             0               13,560,126                      126            0.0009292
                                   100 %                                          + 10               13,559,804                     -196            -0.0014454

                                   100 %                                          + 20               13,559,861                     -139            -0.0010251
                                   100 %                                          + 30               13,560,284                      284            0.0020944
                                   100 %                                          + 40               13,560,221                      221            0.0016298

                                   100 %                                          + 50               13,560,086                       86            0.0006342
                         BATT. ENDPOINT                        3.40               + 20               13,559,745                     -255            -0.0018805
                                                           Table 7-3. Frequency Stability Test Data




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Frequency Stability Test Data
§15.225; RSS-210 (B.6)


                                                                               Frequency Stability

                                                  0.03




                                                  0.02




                                                  0.01
                                Deviation (ppm)




                                                  0.00




                                                  -0.01




                                                  -0.02




                                                  -0.03




                                                                                        Temperature (°C)



                                                                    Figure 7-3. Frequency Stability Plot




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7.4           In-Band Radiated Spurious Emission Measurements
§15.225(a)(b)(c); RSS-210 (B.6)

Test Overview and Limit

The EUT was tested from 13.110 – 14.010 MHz. All in-band radiated spurious emissions are measured with a
spectrum analyzer connected to a loop antenna while the EUT is operating at appropriate frequencies. Only the
radiated emissions of the configuration that produced the worst case emissions are reported in this section.

All in-band emissions appearing in a restricted band as specified in Section 15.225 of the Title 47 CFR
must not exceed the limits shown in Table 7-4.


                                         Frequency                                  Field Strength                         Measured Distance
                                           [MHz]                                        [V/m]                                 [Meters]

                                       13.553-13.567 MHz                                    15,848                                        30

                                   13.410-13.553 MHz and
                                                                                              334                                         30
                                     13.567-13.710 MHz

                                   13.110-13.410 MHz and
                                                                                              106                                         30
                                     13.710-14.010 MHz
                                                                       Table 7-4. Radiated Limits

Test Procedures Used

ANSI C63.10-2013 – Section 6.4.7

Test Settings

             1. RBW = 9kHz
             2. VBW ≥ 3 x RBW
             3. Detector = peak
             4. Sweep time = auto couple
             5. Trace mode = max hold
             6. Trace was allowed to stabilize




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Test Setup
The EUT and measurement equipment were set up as shown in the diagram below.




                                                                  Figure 7-4. Radiated Test Setup

Test Notes:

1. All emissions lying in restricted bands specified in §15.225 and RSS-210 are below the limit shown in Table
      7-4.
2. All measurements were performed using a loop antenna. The antenna was positioned in three orthogonal
      positions (X front, Y side, Z top) and the position with the highest emission level was recorded.
3. The EUT was positioned in three orthogonal planes to determine the orientation resulting in the worst case
       emissions.
4. Measurements were performed at 3m and the data was extrapolated to the specified measurement distance
       of 30m using the square of an inverse linear distance extrapolation factor (40 dB/decade) as specified in
       §15.31(f)(2). Extrapolation Factor = 20 log10(30/3)2 = 40dB.
5. The spectrum was investigated from 9kHz up to 30MHz using the loop antenna. Only the emissions shown in
       the table below were found to be significant.
6. All measurements were recorded using a spectrum analyzer employing a quasi-peak detector.
7. The "-" shown in the following RSE tables are used to denote a noise floor measurement.

Sample Calculation

      o      Field Strength Level [dBV/m] = Analyzer Level [dBm] + 107 + AFCL [dB/m]
      o      AFCL [dB/m] = Antenna Factor [dB/m] + Cable Loss [dB]
      o      Margin [dB] = Field Strength Level [dBV/m] – Limit [dBV/m]



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In-Band Radiated Spurious Emission Measurements
§15.225(a)(b)(c); RSS-210 (B.6)


           Frequency:                                           13.56MHz

           Measurement Distance:                                3 Meters



                          Ant. Antenna Turntable                                                             3m Field 30m Field
     Frequency                                                                Level           AFCL                                                Limit          Limit             Margin
                          Pol.   Height Azimuth                                                              Strength Strength
       [MHz]                                                                 [dBm]           [dB/m]                                              [µV/m]        [dBµV/m]             [dB]
                         [X/Y/Z]  [cm]  [degree]                                                            [dBµV/m] [dBµV/m]

          13.39               X            100                10             -93.01            14.82            28.81           -11.19           106.00            40.51           -51.69

          13.54               X            100                10             -91.60            14.77            30.17            -9.83           334.00            50.47           -60.30

          13.55               X            100                10             -85.91            14.77            35.86            -4.14           334.00            40.00           -16.59

          13.56               X            100                10             -78.51            14.77            43.26             3.26         15848.00            43.52           -24.20

          13.57               X            100                10             -85.85            14.76            35.91            -4.09           334.00            43.52           -24.99

          13.67               X            100                10             -93.43            14.73            28.30           -11.70           334.00            46.02           -22.23

          13.73               X            100                10             -93.70            14.71            28.01           -11.99           106.00            40.51           -52.50
                                                          Table 7-5. In-Band Radiated Measurements




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7.5           Radiated Spurious Emission Measurements, Out-of-Band
§15.209 §15.225(d); RSS-Gen (8.9)

Test Overview and Limit

The EUT was tested from 9kHz up to the 1GHz excluding the band 13.110 – 14.010 MHz. All measurements up
to 960MHz were recorded with a spectrum analyzer employing a quasi-peak detector.

All out-of-band emissions appearing in a restricted band as specified in Section 15.225 of the Title 47
CFR must not exceed the limits shown in Table 7-6 per Section 15.209.

                                                                                  Field Strength                           Measured Distance
                                        Frequency
                                                                                      [V/m]                                   [Meters]
                                   0.009 – 0.490 MHz                                 2400/F (kHz)                                        300
                                   0.490 – 1.705 MHz                                24000/F (kHz)                                         30
                                   1.705 – 30.00 MHz                                         30                                           30
                                   30.00 – 88.00 MHz                                        100                                            3
                                   88.00 – 216.0 MHz                                        150                                            3
                                   216.0 – 960.0 MHz                                        200                                            3
                                    Above 960.0 MHz                                         500                                            3
                                                           Table 7-6. Radiated Limits – Out of band

Test Procedures Used

ANSI C63.10-2013 – Section 6.5.4

Test Settings

             1. Analyzer center frequency was set to the frequency of the radiated spurious emission of interest
             2. RBW = 9kHz for emissions below 30MHz and 100kHz for emissions between 30MHz and 1GHz
             3. VBW ≥ 3 x RBW
             4. Detector = peak
             5. Sweep time = auto couple
             6. Trace mode = max hold
             7. Trace was allowed to stabilize




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Test Setup
The EUT and measurement equipment were set up as shown in the diagram below.




                                                          Figure 7-5. Radiated Test Setup < 30MHz




                                                          Figure 7-6. Radiated Test Setup > 30MHz




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Test Notes:

      1. All measurements were recorded using a spectrum analyzer employing a quasi-peak detector for
             emissions below 960MHz.
      2. A loop antenna was used to investigate emissions below 30MHz.
      3. Both Vertical and Horizontal polarities of the receive antenna were evaluated with the worst case
             emissions being reported. Below 30MHz the loop antenna was positioned in 3 orthogonal planes (X front,
             Y side, Z top) to determine the orientation resulting in the worst case emissions.
      4. The EUT was positioned in three orthogonal planes to determine the orientation resulting in the worst
             case emissions.
      5. The spectrum is measured from 9kHz to the 10th harmonic and the worst-case emissions are reported.
      6. No spurious emissions levels were found to be greater than the level of the fundamental.
      7. The "-" shown in the following RSE tables are used to denote a noise floor measurement.

Sample Calculation

o      Field Strength Level [dBV/m] = Analyzer Level [dBm] + 107 + AFCL [dB/m]
o      AFCL [dB/m] = Antenna Factor [dB/m] + Cable Loss [dB]
o      Margin [dB] = Field Strength Level [dBV/m] – Limit [dBV/m]




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Radiated Spurious Emission Measurements, Out-of-Band
§15.209 §15.225(d); RSS-Gen (8.9)




                                              Plot 7-1. Radiated Spurious Plot 9kHz – 30MHz (Pol. X)




                                              Plot 7-2. Radiated Spurious Plot 9kHz – 30MHz (Pol. Y)




                                              Plot 7-3. Radiated Spurious Plot 9kHz – 30MHz (Pol. Z)
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                                                    Plot 7-4. Radiated Spurious Plot 30MHz – 1GHz




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Radiated Spurious Emission Measurements, Out-of-Band
§15.209 §15.225(d); RSS-Gen (8.9)


  Tx Frequency                                         13.56MHz

  Measurement Distance:                                3 Meters



                                         Ant.         Antenna Turntable                                                           3m Field
                 Frequency                                                                      Level             AFCL                       Limit                       Margin
                                         Pol.          Height  Azimuth                                                            Strength
                   [MHz]                                                                       [dBm]             [dB/m]                    [dBµV/m]                       [dB]
                                        [H/V]           [cm]  [degree]                                                           [dBµV/m]

                      40.68                 V                -                   -             -68.87             -16.61             21.52             40.00             -18.48

                      54.24                 V                -                   -             -71.64             -22.18             13.18             40.00             -26.82

                      67.80                 V                -                   -             -70.80             -21.26             14.94             40.00             -25.06

                      81.36                 V                -                   -             -70.42             -21.60             14.98             40.00             -25.02

                      94.92                 V                -                   -             -71.25             -20.26             15.49             43.52             -28.04

                     108.48                 V                -                   -             -72.11             -16.98             17.91             43.52             -25.61
                                                                     Table 7-7. Radiated Measurements




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7.6           Line Conducted Measurement Data
§15.207; RSS-Gen (8.8)

Test Overview and Limit

All AC line conducted spurious emissions are measured with a receiver connected to a grounded LISN while the
EUT is operating at its maximum duty cycle, at maximum power, and at the appropriate frequencies. All data rates
and modes were investigated for conducted spurious emissions. Only the conducted emissions of the
configuration that produced the worst case emissions are reported in this section.

All conducted emissions must not exceed the limits shown in the table below, per Section 15.207 and
RSS-Gen (8.8).


                             Frequency of emission                                              Conducted Limit (dBV)
                                    (MHz)
                                                                                     Quasi-peak                                      Average
                                          0.15 – 0.5                                  66 to 56*                                      56 to 46*
                                           0.5 – 5                                       56                                             46
                                            5 – 30                                       60                                             50
                                                                     Table 7-8. Conducted Limits

*Decreases with the logarithm of the frequency.

Test Procedures Used

ANSI C63.10-2013, Section 6.2

Test Settings

             Quasi-Peak Field Strength Measurements

             1. Analyzer center frequency was set to the frequency of the spurious emission of interest
             2. RBW = 9kHz (for emissions from 150kHz – 30MHz)
             3. Detector = quasi-peak
             4. Sweep time = auto couple
             5. Trace mode = max hold
             6. Trace was allowed to stabilize
             Average Field Strength Measurements

             1. Analyzer center frequency was set to the frequency of the spurious emission of interest
             2. RBW = 9kHz (for emissions from 150kHz – 30MHz)
             3. Detector = RMS
             4. Sweep time = auto couple
             5. Trace mode = max hold
             6. Trace was allowed to stabilize



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Test Setup

The EUT and measurement equipment were set up as shown in the diagram below.




                                                  Figure 7-7. Test Instrument & Measurement Setup

Test Notes

1.        All modes of operation were investigated and the worst-case emissions are reported using mid channel.
          The emissions found were not affected by the choice of channel used during testing.
2.        The limit for an intentional radiator from 150kHz to 30MHz are specified in 15.207 and RSS-Gen (8.8).
3.        Corr. (dB) = Cable loss (dB) + LISN insertion factor (dB)
4.        QP/AV Level (dBV) = QP/AV Analyzer/Receiver Level (dBV) + Corr. (dB)
5.        Margin (dB) = QP/AV Limit (dBV) - QP/AV Level (dBV)
6.        Traces shown in plot are made using a peak detector.
7.        Deviations to the Specifications: None.
8.        EUT was tested with the antenna terminated.




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                                                            Plot 7-5. Line-Conducted Test Plot (L1)




                                                             Plot 7-6. Line-Conducted Test Plot (N)



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8.0              CONCLUSION


   The data collected relate only to the item(s) tested and show that the LG Portable Handset
   FCC ID: ZNFQ720TS has been tested to show compliance with Part 15 Subpart C (15.225) of the FCC Rules.




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Document Created: 2019-05-22 23:51:17
Document Modified: 2019-05-22 23:51:17

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