DFS Test Report

FCC ID: ZNFX420MM

Test Report

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FCCID_4293465

                                        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 15.407 DFS

    Applicant Name:                                                                              Date of Testing:
    LG Electronics USA, Inc.                                                                     04/11/2019 - 04/29/2019
    1000 Sylvan Avenue                                                                           Test Site/Location:
    Englewood Cliffs, NJ 07632                                                                   PCTEST Lab. Columbia, MD, USA
    United States                                                                                Test Report Serial No.:
                                                                                                 1M1904050055-09-R1.ZNF


    FCC ID:                                                            ZNFX420MM
    APPLICANT:                                                         LG Electronics USA, Inc.


    Application Type:                                                  Certification
    Model:                                                             LM-X420MM
    Additional Model(s):                                               LMX420MM, X420MM
    EUT Type:                                                          Client Only Device, No Radar Detection Capability
    Max. RF Output Power:                                              58.345 mW (17.66 dBm) Conducted
                                                                       (802.11a UNII Band 2A)
                                                                       52.360 mW (17.19 dBm) Conducted
                                                                       (802.11a UNII Band 2C)
    Frequency Range:                                                   5260 – 5320 MHz (UNII-2A Band)
                                                                       5500 – 5720 MHz (UNII-2C Band)
    FCC Classification:                                                Unlicensed National Information Infrastructure (UNII)
    FCC Rule Part(s):                                                  Part 15.407(UNII)
    Test Procedure(s):                                                 KDB 905462 D02 v02

    This revised Test Report (S/N: 1M1904050055-09-R1.ZNF) supersedes and replaces the previously issued test report (S/N:
    1M1904050055-09.ZNF) on the same subject device for the same type of testing as indicated. Please discard or destroy the previously
    issued test report(s) and dispose of it accordingly.

    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 KDB 905462 D02 v02 Compliance Measurement
    Procedures for Unlicensed-National Information Infrastructure Devices Operating in the 5.25 – 5.35 GHz and 5.47 – 5.725 GHz Bands
    Incorporating Dynamic Frequency Selection. 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: ZNFX420MM
                                                                                   (CERTIFICATION)                                                               Quality Manager
 Test Report S/N:                      Test Dates:                    EUT Type:
                                                                                                                                                                 Page 1 of 14
 1M1904050055-09-R1.ZNF                04/11/2019 - 04/29/2019 Portable Handset
© 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      Evaluation Procedure ........................................................................................................................................... 3
             1.3      Summary of Test Results ..................................................................................................................................... 3
2.0          PRODUCT INFORMATION.......................................................................................................................... 4
             2.1      Equipment Description ......................................................................................................................................... 4
             2.2      EUT Capabilities ................................................................................................................................................... 4
             2.3      Modifications ........................................................................................................................................................ 4
3.0          DESCRIPTION OF DYNAMIC FREQUENCY SELECTION TEST .............................................................. 5
             3.1      Applicability .......................................................................................................................................................... 5
             3.2      Requirements ....................................................................................................................................................... 5
             3.3      DFS Detection Threshold Values ......................................................................................................................... 7
             3.4      Parameters of DFS Test Signals .......................................................................................................................... 8
             3.5      Procedure ............................................................................................................................................................. 9
4.0          TEST EQUIPMENT .................................................................................................................................... 10
             4.1      Additional Equipment.......................................................................................................................................... 10
5.0          TEST RESULTS ......................................................................................................................................... 11
6.0          CONCLUSION ............................................................................................................................................ 14




                                                                                 MEASUREMENT REPORT                                                                 Approved by:
 FCC ID: ZNFX420MM
                                                                                    (CERTIFICATION)                                                                 Quality Manager
 Test Report S/N:                      Test Dates:                     EUT Type:
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 1M1904050055-09-R1.ZNF                04/11/2019 - 04/29/2019 Portable Handset
© 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 I N T R O D U C T I O N

1.1              Scope
This report has been prepared to demonstrate compliance with the requirements for Dynamic Frequency Selection
(DFS) as stated in KDB 905462 D02 v02.                 Testing was performed on the LG Portable Handset
FCC ID: ZNFX420MM. As of July 20, 2007 all devices operating in the 5250 – 5350 MHz and/or the 5470 – 5725
MHz bands must comply with the DFS requirements. As the EUT does not have radar detection capability it was
evaluated as a Client Only Device. All test results reported herein are applicable to the sample selected for testing.
The unit used for testing was supplied by LG Electronics USA, Inc..

1.2              Evaluation Procedure
Conducted test methodology was used for the DFS evaluation procedure of the EUT. No deviations to the test
procedure and test methods occurred during the evaluation of the EUT.

1.3              Summary of Test Results
The EUT was found to be compliant with the requirements for DFS as required for a Client Device per Part
15.407(h), RSS-247 and KDB 905462 D02 v02. The following table lists the measured parameters. The actual data
and plots can be found in Section 5 and 6 of this report.


                                         Parameter                                               Measured                                       Limit                         Result
    5470 – 5725 MHz
     UNII – 2C Band




                      Channel Move Time                                               4.03 s                                     10 seconds                                    Pass

                                                                                                                                 200ms + aggregate of
                                                                                      < 200ms
                      Channel Closing Transmission Time                                                                          60ms over remaining                           Pass
                                                                                      + 0.25 ms (aggregate)
                                                                                                                                 10 second period
                                                                           Monitored for 30
                                                                                                  No client transmission
                      Client beacon test                                   minutes with no client                                                                              Pass
                                                                                                  occurred
                                                                           transmission
                                                             Table 1-1. DFS Test Results Summary




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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 P R O D U C T I N F O R M A T I O N

2.1          Equipment Description
The Equipment Under Test (EUT) is the LG Portable Handset FCC ID: ZNFX420MM.

             Mode of Operation:

                                   Master Device
                                   Client Device (No radar detection)
                                   Client Device with Radar Detection



     Parameters of EUT:

                                             5260 – 5320 MHz
     Frequency
                                             5500 – 5720 MHz


                                             58.345 mW (17.66 dBm) Conducted (802.11a UNII Band 2A)
     Output Power:
                                             52.360 mW (17.19 dBm) Conducted (802.11a UNII Band 2C)


     Modulation:                             OFDM

     Channel Bandwidth:                      20, 40, 80 MHz
                                                                    Table 2-1. Parameters of EUT

Test Device Serial No.: 11892

2.2          EUT Capabilities
This device contains the following capabilities:

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          Modifications
No modifications to the EUT were required in order to comply with the DFS specifications.




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 FCC ID: ZNFX420MM
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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 D E S C R I P T I O N O F D Y N A M I C F R E Q U E N C Y S E L E C T I O N T E S T

3.1          Applicability
The following table from KDB 905462 D02 v02 lists the applicable requirements for the DFS testing. The device
evaluated in this report is considered a client device without radar detection capability.

                 Requirement                                                        Operational Mode

                                                                                                           Client Without                   Client With Radar
                                                                                      Master
                                                                                                          Radar Detection                       Detection
                 Non-Occupancy Period                                                    Yes                 Not required                               Yes

                 DFS Detection Threshold                                                 Yes                 Not required                               Yes
                 Channel Availability Check Time                                         Yes                 Not required                        Not required
                 Uniform Spreading                                                       Yes                 Not required                        Not required

                 U-NII Detection Bandwidth                                               Yes                 Not required                               Yes
                                                                      Table 3-1. DFS Applicability


        Requirement
                                                                                    Operational Mode

                                                                                                                        Client                               Client
                                                                                          Master                    Without Radar                          With Radar
                                                                                                                      Detection                            Detection

        DFS Detection Threshold                                                              Yes                      Not required                                Yes

        Channel Closing Transmission Time                                                    Yes                              Yes                                 Yes

        Channel Move Time                                                                    Yes                              Yes                                 Yes

        U-NII Detection Bandwidth                                                            Yes                      Not required                                Yes

        Client Beacon Test                                                                   N/A                              Yes                                 Yes
                                               Table 3-2. DFS Applicability During Normal Operation

3.2          Requirements
Per KDB 905462 D02 v02 the following are the requirements for Client Devices:

a) A Client Device will not transmit before having received appropriate control signals from a Master Device.
b) A Client Device will stop all its transmissions whenever instructed by a Master Device to which it is associated
   and will meet the Channel Move Time and Channel Closing Transmission Time requirements.




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                                                                                   (CERTIFICATION)                                                               Quality Manager
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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.


     The Client Device will not resume any transmissions until it has again received control signals from a Master
     Device.
c) If a Client Device is performing In-Service Monitoring and detects a Radar Waveform above the DFS Detection
    Threshold, it will inform the Master Device. This is equivalent to the Master Device detecting the Radar
    Waveform and d) through f) of section 5.1.1 apply.
d) Irrespective of Client Device or Master Device detection the Channel Move Time and Channel Closing
   Transmission Time requirements remain the same.


Channel Move Time and Channel Closing Transmission Time requirements are listed in the following table.

Parameter                                                                                                           Value

Non-occupancy period                                                                                                Minimum 30 minutes

Channel Availability Check Time                                                                                      60 seconds

                                                                                                                    10 seconds
Channel Move Time
                                                                                                                    See Note 1.
Channel Closing Transmission Time                                                                                   200 milliseconds + an
                                                                                                                    aggregate of 60 milliseconds over
                                                                                                                    remaining 10 second period.
                                                                                                                    See Notes 1 and 2.
                                                                                                                    Minimum 100% of the U-
U-NII Detection Bandwidth                                                                                           NII 99% transmission
                                                                                                                    power bandwidth. See Note 3.
Note 1: Channel Move Time and the Channel Closing Transmission Time should be performed with Radar
Type 0. The measurement timing begins at the end of the Radar Type 0 burst.
Note 2: The Channel Closing Transmission Time is comprised of 200 milliseconds starting at the beginning of
the Channel Move Time plus any additional intermittent control signals required to facilitate a Channel move
(an aggregate of 60 milliseconds) during the remainder of the 10 second period. The aggregate duration of
control signals will not count quiet periods in between transmissions.
Note 3: During the U-NII Detection Bandwidth detection test, radar type 0 should be used. For each frequency
step the minimum percentage of detection is 90 percent. Measurements are performed with no data traffic.
                                      Table 3-3: DFS Response Requirements




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 FCC ID: ZNFX420MM
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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          DFS Detection Threshold Values
The DFS detection thresholds are defined for Master devices and Client Devices with In-service monitoring. These
detection thresholds are listed in the following table.

                                                                                                                            Value
      Maximum Transmit Power
                                                                                                                            (See Notes 1 and 2)

      ≥ 200 milliwatt                                                                                                       -64 dBm

      < 200 milliwatt                                                                                                       -62 dBm
      Note 1: This is the level at the input of the receiver assuming a 0 dBi receive antenna.

      Note 2: Throughout these test procedures an additional 1 dB has been added to the amplitude of
      the test transmission waveforms to account for variations in measurement equipment. This will
      ensure that the test signal is at or above the detection threshold level to trigger a DFS response.
          Table 3-4: Detection Thresholds for Master Devices and Client Devices with Radar Detection




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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.


3.4          Parameters of DFS Test Signals
As the EUT is a Client Device with no Radar Detection only one type radar pulse is required for the testing. Radar
Pulse type 1 was used in the evaluation of the Client device for the purpose of measuring the Channel Move Time
and the Channel Closing Transmission Time. Table 3-5 lists the parameters for the Short Pulse Radar Waveforms.
A plot of the Radar Pulse Type 1 used for testing is included in Section 5.0 of this report.


                                                                                                                                         Minimum
                                   Pulse                                                                                                                             Minimum
                                                                        PRI                                  Number                    Percentage of
     Radar Type                    Width                                                                                                                             Number of
                                                                       (μsec)                               of Pulses                   Successful
                                   (μsec)                                                                                                                              Trials
                                                                                                                                         Detection

              0                         1                                1425                                     18                      See Note 1                 See Note 1

                                                        Test A: 15 unique PRI                                              1
                                                                                                      𝑅𝑜𝑢𝑛𝑑𝑢𝑝
                                                       values randomly selected                                           360
                                                         from the list of 23 PRI                          19 ∙ 10
                                                           values in Table 5a                         ∙
                                                                                                          𝑃𝑅𝐼
                                                         Test B: 15 unique PRI
              1                         1              values randomly selected                                                                60%                          30
                                                        within the range of 518-
                                                           3066 μsec, with a
                                                        minimum increment of 1
                                                          μsec, excluding PRI
                                                       values selected in Test A
              2                       1-5                             150-230                                  23-29                           60%                          30

              3                      6-10                             200-500                                  16-18                           60%                          30

              4                     11-20                             200-500                                  12-16                           60%                          30

     Aggregate (Radar Types 1-4)                                                                                                               80%                         120
     Note 1: Short Pulse Radar Type 0 should be used for the detection bandwidth test, channel move time,
     and channel closing time tests.
                            Table 3-5: Parameters for Short Pulse Radar Waveforms

                                                                                                                                       Minimum
                              Pulse                 Chirp                                   Number                                                                Minimum
           Radar                                                           PRI                                  Number               Percentage of
                              Width                 Width                                  of Pulses                                                              Number of
           Type                                                          (μsec)                                 of Bursts             Successful
                              (μsec)                (MHz)                                  per Burst                                                                Trials
                                                                                                                                       Detection
                                                             1000-
               5             50 - 100               5 - 20               1-3       8 - 20       80%                                                                      30
                                                             2000
                                             Table 3-6. Parameters for Long Pulse Radar Waveforms




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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
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                                                                                                                                      Minimum
                                                                                                             Hopping                                            Minimum
                                Pulse                                  Pulses           Hopping                                      Percentage
             Radar                                     PRI                                                   Sequence                                           Number
                                Width                                   per              Rate                                            of
             Type                                    (μsec)                                                   Length                                               of
                                (μsec)                                  Hop              (kHz)                                       Successful
                                                                                                              (msec)                                             Trials
                                                                                                                                      Detection
                  6                  1                 333                  9              0.333                  300                      70%                        30
                                     Table 3-7. Parameters for Frequency Hopping Radar Waveforms

3.5          Procedure
KDB 905462 D02 v02 describes a radiated test setup and a conducted test setup. The conducted test setup was
used for this testing. Figure 3-1 shows the typical test setup. In Band 2A, one channel selected between 5260
and 5350 MHz is chosen for the testing. In Band 2C, one channel selected between 5500 and 5720 MHz was
chosen for testing.




                                                         Figure 3-1. Conducted Test Setup for DFS

      1. The “Aeroflex PXI DFS Radar Simulator and Analyzer Test Suite” is setup to provide a simulated radar
         pulse at the frequency that the Master and Client are operating. A Type 0 radar pulse was used.
      2. The Client Device (EUT) is set up per the diagram in Figure 3-1 and communications between the Master
         device and the Client is established.
      3. An MPEG or data file that is typical for the device is streamed from the Master to the Client to properly load
         the network.
      4. The “Aeroflex PXI DFS Radar Simulator and Analyzer Test Suite” is set to record and display 12 seconds
         of time, starting from where the simulated radar is generated. This time domain plot captures any
         transmissions occurring up to and after 10sec. Aggregate time is computed to ensure compliance. (Note:
         the channel may be different since the Master and Client have changed channels due to the detection of
         the initial radar pulse.)
      5. After the initial radar burst the channel is monitored for 30 minutes to ensure no transmissions or beacons
         occur. A second monitoring setup is used to verify that the Master and Client have both moved to different
         channels.




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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.


4.0 T E S T E Q U I P M E N T

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-
2006.

     Manufacturer                       Model                                  Description                            Cal Date       Cal Interval       Cal Due         Serial Number
        Aeroflex                    PXI 82531                           PXI RF Synthesizer                           2/18/2019         Biennial        2/18/2021          1082329
         Agilent                     N9038A                             MXE EMI Receiver                             6/11/2018         Annual          6/11/2019         MY51210133
    Solar Electronics           8012‐50‐R‐24‐BNC               Line Impedance Stabilization Network                  8/14/2017         Biennial        8/14/2019           310233
                                             Table 4-1. 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.

4.1          Additional Equipment

The following equipment was used in support of the DFS testing.


                       Device            Manufacturer                    Model/Description                         Description                         S/N:

                                                                                 WEA453e                          Access Point                2XLU060011P
                       Master                Samsung
                                                                                 WEC8050                             Controller               2XGV250016L

                                                                    Table 4-2. Support Equipment




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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
rights to this report or assembly of contents thereof, please contact INFO@PCTEST.COM.


5.0 T E S T R E S U L T S

Channel Loading Notes:
Per KDB 905462 D02 v02, timing plots are required with calculations demonstrating a minimum channel loading
of approximately 17% or greater. For example, you can zero span the spectrum analyzer and approximate the
transmission time.




                                                          Figure 5-1. Band 2C Pulse Width / Period


                                     Channel Loading = Pulse Width / Period = 166 µs / 312 µs = 53.21 %




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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
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Move Time and Aggregate Time Notes:
      1. Trigger Threshold was configured to only capture client pulses. The pulses shown in the plots below
         have been determined to be from the Master AP.
      2. Marker Info and Aggregate time results are shown on the right side of the plots below.




                                                Figure 5-2. Band 2C Move Time and Aggregate Time




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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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            Figure 5-3. Band 2C Client Beacon Test – Monitoring live spectrum – Elapse time 30 minutes




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6.0 C O N C L U S I O N

The data collected relate only to the item(s) tested and show that the LG Portable Handset
FCC ID: ZNFX420MM is in compliance with the DFS requirements for a Client Device without radar detection in
accordance with Part 15.407 of the FCC Rules.




                                                                                MEASUREMENT REPORT                                                               Approved by:
 FCC ID: ZNFX420MM
                                                                                   (CERTIFICATION)                                                               Quality Manager
 Test Report S/N:                      Test Dates:                    EUT Type:
                                                                                                                                                                 Page 14 of 14
 1M1904050055-09-R1.ZNF                04/11/2019 - 04/29/2019 Portable Handset
© 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
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Document Created: 2019-05-29 02:29:55
Document Modified: 2019-05-29 02:29:55

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