12. FCC Test Report DFS

FCC ID: TE7T2UPLUS

Test Report

Download: PDF
FCCID_4214073

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                         FCC DFS Test Report


                            This report concerns: Original Grant


          Project No.        :   18120004
          Equipment          :   AC600 High Gain Wireless Dual Band USB Adapter
          Test Model         :   Archer T2U Plus
          Series Model       :   N/A
          Applicant          :    TP—Link Technologies Co., Ltd.
          Address            :   Building 24 (floors 1,3,4,5) and 28 (floors1—4), Central
                                 Science and Technology Park,Nanshan Shenzhen,
                                 518057 China


          Date of Receipt    :   Dec. 04, 2018
          Date of Test       :   Dec. 05, 2018 ~Feb. 28, 2019
          Issued Date        :   Mar. 13, 2019
          Tested by          :    BTL Inc.




          Testing Engineer                   :          [AM           »   éfl

                                                               May Cai)


          Technical Manager                  :             ‘S‘Q&/w\          ]JJ\

                                                               (Steven Lu)



          Authorized Signatory               :           j«g&w’(          W

                                                               (Ethan Ma)




                 B TL                               I N C .
       No.3, Jinshagang 1st Road, Shixia, Dalang Town, Dongguan,
                           Guangdong, China.
          TEL: +86—769—8318—3000      FAX: +86—769—8319—6000
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                                             Certificate #5123.02

Report No.: BTL—FCCP—3—1812C004                                                           Page 1 of 24
                                                                                     Report Version: ROO


Declaration
BTL represents to the client that testing is done in accordance with standard procedures as applicable and
that test instruments used has been calibrated with standards traceable to international standard(s) and/or
national standard(s).
BTL's reports apply only to the specific samples tested under conditions. It is manufacture’s responsibility to
ensure that additional production units of this model are manufactured with the identical electrical and
mechanical components. BTL shall have no liability for any declarations, inferences or generalizations
drawn by the client or others from BTL issued reports.
The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP,
NIST, A2LA, or any agency of the U.S. Government.
This report is the confidential property of the client. As a mutual protection to the clients, the public and
ourselves, the test report shall not be reproduced, except in full, without our written approval.
BTL’s laboratory quality assurance procedures are in compliance with the ISO/IEC 17025 requirements, and
accredited by the conformity assessment authorities listed in this test report.
BTL is not responsible for the sampling stage, so the results only apply to the sample as received.
The information, data and test plan are provided by manufacturer which may affect the validity of results, so
it is manufacturer’s responsibility to ensure that the apparatus meets the essential requirements of applied
standards and in all the possible configurations as representative of its intended use.
Limitation
For the use of the authority's logo is limited unless the Test Standard(s)/Scope(s)/Item(s) mentioned in this
test report is (are) included in the conformity assessment authorities acceptance respective.




Report No.: BTL-FCCP-3-1812C004                                                                      Page 2 of 24
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                           Table of Contents              page

  REPORT ISSUED HISTORY                                             4
  1 . GENERAL SUMMARY                                               5
  2 . EUT INFORMATION                                               6
     2.1 EUT SPECIFICATION TABLE                                    6
     2.2 CONDUCTED OUTPUT POWER AND EIRP                            8
  3 .U-NII DFS RULE REQUIREMENTS                                    9
     3.1 WORKING MODES AND REQUIRED TEST ITEMS                      9
     3.2 TEST LIMITS AND RADAR SIGNAL PARAMETERS                   10
  4 . TEST INSTRUMENTS                                             13
  5 . DYNAMIC FREQUENCY SELECTION (DFS) TEST                       14
     5.1 DFS MEASUREMENT SYSTEM:                                   14
     5.2 CALIBRATION OF DFS DETECTION THRESHOLD LEVEL              18
     5.3 DEVIATION FROM TEST STANDARD                              18
  6 . TEST RESULTS                                                 19
     6.1 SUMMARY OF TEST RESULT                                    19
     6.2 TEST MODE: DEVICE OPERATING IN MASTER MODE.               19
     6.3 DFS DETECTION THRESHOLD                                   20
     6.4 CHANNEL CLOSING TRANSMISSION AND CHANNEL MOVE TIME WLAN TRAFFIC
                                                                   21
     6.5 NON- OCCUPANCY PERIOD                                     23
  7 . EUT TEST PHOTO                                               24




Report No.: BTL-FCCP-3-1812C004                                  Page 3 of 24
                                                             Report Version: R00


                              REPORT ISSUED HISTORY

        Report Version                   Description       Issued Date
             R00                        Original Issue.   Mar. 13, 2019




Report No.: BTL-FCCP-3-1812C004                               Page 4 of 24
                                                          Report Version: R00


 1. GENERAL SUMMARY

     Equipment      : AC600 High Gain Wireless Dual Band USB Adapter
     Brand Name     : tp-link
     Test Model     : Archer T2U Plus
     Series Model   : N/A
     Applicant      : TP-Link Technologies Co., Ltd.
     Manufacturer   : TP-Link Technologies Co., Ltd.
     Address        : Building 24 (floors 1,3,4,5) and 28 (floors1-4), Central Science and
                      Technology Park,Nanshan Shenzhen, 518057 China
     Date of Test   : Dec. 05, 2018 ~ Feb. 28, 2019
     Test Sample    : Engineering Sample No.: D181211067
     Standard(s)    : FCC Part 15, Subpart E (Section 15.407) / FCC 06-96
                      FCC KDB 789033 D02 General U-NII Test Procedures New Rules v02r01
                      FCC KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02
                      FCC KDB 905462 D03 UNII Clients Without Radar Detection New Rules
                      v01r02

  The above equipment has been tested and found compliance with the requirement of the relative
  standards by BTL Inc.
  The test data, data evaluation, and equipment configuration contained in our test report (Ref No.
  BTL-FCCP-3-1812C004) were obtained utilizing the test procedures, test instruments, test sites
  that has been accredited by the Authority of A2LA according to the ISO/IEC 17025 quality
  assessment standard and technical standard(s).

  Test results included in this report are only for the UNII-2A, UNII-2C DFS Slave part.




Report No.: BTL-FCCP-3-1812C004                                                        Page 5 of 24
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 2. EUT INFORMATION

  2.1 EUT SPECIFICATION TABLE

                                     Table 1: Specification of EUT

    Product Name                       AC600 High Gain Wireless Dual Band USB Adapter
    Brand Name                         tp-link
    Test Model                         Archer T2U Plus
    Series Model                       N/A
    Model Difference(s)                N/A
    Operational Mode                   Slave
    Operating FrequencyRange           5250 MHz~5350 MHz & 5470 MHz~5725 MHz
    Modulation                         OFDM

  Note: This device was functioned as a
    Master       Slave device without radar detection        Slave device with radar detection

  Note:
  1. For a more detailed features description, please refer to the manufacturer’s specifications or the
     user's manual.




Report No.: BTL-FCCP-3-1812C004                                                           Page 6 of 24
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  2. Channel List:

                 IEEE 802.11a
                                       IEEE 802.11n (HT40)
              IEEE 802.11n (HT20)                              IEEE 802.11ac (VHT80)
                                      IEEE 802.11ac (VHT40)
             IEEE 802.11ac (VHT20)
                    UNII-2A                 UNII-2A                  UNII-2A
                          Frequency              Frequency                 Frequency
              Channel                 Channel                  Channel
                            (MHz)                  (MHz)                     (MHz)
                52           5260       54          5270         58           5290
                56           5280       62          5310
                60           5300
                64           5320

                  IEEE 802.11a
                                       IEEE 802.11n (HT40)
              IEEE 802.11n (HT20)                              IEEE 802.11ac (VHT80)
                                      IEEE 802.11ac (VHT40)
             IEEE 802.11ac (VHT20)
                    UNII-2C                 UNII-2C                  UNII-2C
                          Frequency              Frequency                 Frequency
              Channel                 Channel                  Channel
                            (MHz)                  (MHz)                     (MHz)
                100          5500       102         5510         106          5530
                104          5520       110         5550         122          5610
                108          5540       118         5590
                112          5560       126         5630
                116          5580       134         5670
                120          5600
                124          5620
                128          5640
                132          5660
                136          5680
                140          5700

  3. Antenna Specification:

      Ant.           Brand      Model Name      Antenna Type     Connector     Gain (dBi)
       1                        3101502256         Dipole          I-PEX          4.45




Report No.: BTL-FCCP-3-1812C004                                                  Page 7 of 24
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  2.2 CONDUCTED OUTPUT POWER AND EIRP

                     Table 2: The Conducted Output Power and EIRP List

                                          Mode: TX (11a)
      Frequency        Max Couducted Output         Antenna    Max EIRP      Max EIRP
      Band (MHz)            Power (dBm)               Gain       (dBm)         (mW)

      5250~5350                   16.88               4.45       21.33        135.831

      5470~5725                   17.36               4.45       21.81        151.705


                                    Mode: TX (11n 40MHz)
      Frequency        Max Couducted Output         Antenna    Max EIRP      Max EIRP
      Band (MHz)            Power (dBm)               Gain       (dBm)         (mW)

      5250~5350                   16.88               4.45       21.33        135.831

      5470~5725                   17.44               4.45       21.89        154.525


                                   Mode: TX (11ac 80 MHz)
      Frequency        Max Couducted Output         Antenna    Max EIRP      Max EIRP
      Band (MHz)            Power (dBm)               Gain       (dBm)         (mW)

      5250~5350                   15.25               4.45       19.70        93.325

      5470~5725                   17.35               4.45       21.80        151.356




Report No.: BTL-FCCP-3-1812C004                                               Page 8 of 24
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 3. U—NII DFS RULE REQUIREMENTS

  3.1 WORKING MODES AND REQUIRED TEST ITEMS
  The manufacturer shall state whether the UUT is capable of operating as a Master and/or a Client.
  If the UUT is capable of operating in more than one operating mode then each operating mode
  shall be tested separately. See tables 3 and 4 for the applicability of DFS requirements for each of
  the operational modes.

                  Table 3: Applicability of DFS requirements prior to use a channel


                                                           Operational Mode
             Requirement
                                                            Client without     Client with radar
                                             Master
                                                            radar detection        detection
         Non—Occupancy Period                   v°                 v"                  v"
        DFS Detection Threshold                 ¥"            Not required             v"
    Channel Availability Check Time             v"            Not required        Not required
           Uniform Spreading                    v"            Not required        Not required
       U—NII Detection Bandwidth                v"            Not required             v"

                 Table 4: Applicability of DFS requirements during normal operation.


                                                           Operational Mode

             Requirsment                                    Client without Client with radar
                                             Master                     .                .
                                                            radar detection        detection
        DFS Detection Threshold                 ¥"            Not required             v"
     Channel Closing Transmission               w                  /                   w
                  Time
          Channel Move Time                     v°                 v"                  v"
       U—NII Detection Bandwidth                ¥"            Not required             v"




Report No.: BTL—FCCP—3—1812C004                                                            Page 9 of 24
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  3.2 TEST LIMITS AND RADAR SIGNAL PARAMETERS

  DETECTION THRESHOLD VALUES

           Table 5: DFS Detection Thresholds for Master Devices and Client Devices With
                                        Radar Detection.

                                                                         Value
            Maximum Transmit Power
                                                                 (See Notes 1 and 2)
                EIRP ≥ 200 milliwatt                                   -64 dBm
              EIRP < 200 milliwatt and
                                                                       -62 dBm
       power spectral density < 10 dBm/MHz
     EIRP < 200 milliwatt that do not meet the
                                                                        -64 dBm
        power spectral density requirement
  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.

  Note3: EIRP is based on the highest antenna gain. For MIMO devices refer to KDB Publication
  662911 D01.




Report No.: BTL-FCCP-3-1812C004                                                         Page 10 of 24
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                            Table 6: DFS Response Requirement Values


                    Parameter                                          Value

   Non-occupancy period                            Minimum 30 minutes
   Channel Availability Check Time                 60 seconds
   Channel Move Time                               10 seconds See Note 1.
                                                   200 milliseconds + an aggregate of 60
   Channel Closing Transmission Time               milliseconds over remaining 10 second
                                                   period. See Notes 1 and 2.
                                                   Minimum 100% of the UNII
   U-NII Detection Bandwidth                       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.




Report No.: BTL-FCCP-3-1812C004                                                       Page 11 of 24
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  PARAMETERS OF DFS TEST SIGNALS

  Step intervals of 0.1 microsecond for Pulse Width, 1 microsecond for PRI, 1 MHz for chirp width
  and 1 for the number of pulses will be utilized for the random determination of specific test
  waveforms.

                           Table 7: Short Pulse Radar Test Waveforms.




  A minimum of 30 unique waveforms are required for each of the Short Pulse Radar Types 2
  through 4. If more than 30 waveforms are used for Short Pulse Radar Types 2 through 4, then
  each additional waveform must also be unique and not repeated from the previous waveforms. If
  more than 30 waveforms are used for Short Pulse Radar Type 1, then each additional waveform
  is generated with Test B and must also be unique and not repeated from the previous waveforms
  in Tests A or B.




Report No.: BTL-FCCP-3-1812C004                                                     Page 12 of 24
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                              Table 7: Long Pulse Radar Test Waveform

                                                                          Minimum
            Pulse     Chirp                  Number                      Percentage      Minimum
   Radar                           PRI                    Number
            Width     Width                  of Pulses                       of          Number
   Type                           (µsec)                  of Bursts
            (µsec)    (MHz)                  per Burst                   Successful      of Trials
                                                                         Detection
       5      50-100      5-20     1000-2000       1-3         8-20          80%           30
  The parameters for this waveform are randomly chosen(The center frequency for each of the 30
  trials of the Bin 5 radar shall be randomly selected within 80% of the Occupied Bandwidth.) Thirty
  unique waveforms are required for the Long Pulse Radar Type waveforms. If more than 30
  waveforms are used for the Long Pulse Radar Type waveforms, then each additional waveform
  must also be unique and not repeated from the previous waveforms.

                         Table 8: Frequency Hopping Radar Test Waveform

                                                                         Minimum
            Pulse     Chirp                 Number                                       Minimum
   Radar                          PRI                    Number        Percentage of
            Width     Width                of Pulses                                     Number
   Type                          (µsec)                  of Bursts      Successful
            (µsec)    (MHz)                per Burst                                     of Trials
                                                                         Detection
     6         1        333         9        0.333         300              70%             30


 4. TEST INSTRUMENTS

                                   Table 9: Test Instruments List.

                                                                                      Calibration
   DESCRIPTION MANUFACTURER                  MODEL NO.               Serial No
                                                                                         Until
   EXA Spectrum
                            Agilent               N9010A           MY50520044        Mar. 11, 2019
      Analyzer
        Signal
                            Agilent               E4438C           MY49071316        Mar. 11, 2019
     Generator
      POWER
                         Mini-Circuits       ZFRSC-123-S+          331000910-1       Mar. 11, 2019
     SPLITTER
      POWER
                         Mini-Circuits       ZN4PD1-63-S+        SF9335D1045-1       Mar. 11, 2019
     SPLITTER
     Attenuator            WOKEN                 6SM3502           VAS1214NL         Feb. 12, 2020
    Wi-Fi Router            tp-link          Archer AX6000             N/A                N/A
  Note:
        (1) Calibration interval of instruments listed above is one year.
        (2) Wi-Fi Router’s FCC ID: TE7AX6000




Report No.: BTL-FCCP-3-1812C004                                                          Page 13 of 24
                                                                                      Report Version: R00


 5. DYNAMIC FREQUENCY SELECTION (DFS) TEST

  5.1 DFS MEASUREMENT SYSTEM:
  Test Precedure
  1. Master device and client device are set up by conduction method as the following
     configuration.
  2. The client device is connected to notebook and to access a IP address on wireless
     connection with the master device.
  3. Then the master device is connected to another notebook to access a IP address.
  4. Finally, let the two IP addresses run traffic with each other through the Run flow software “Lan
      test” to reach 17% channel loading as below
  Setup




Report No.: BTL-FCCP-3-1812C004                                                        Page 14 of 24
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  Channel Loading
                                     11a Mode




                                  11n 40MHz Mode




Report No.: BTL-FCCP-3-1812C004                       Page 15 of 24
                                                   Report Version: R00


                                      11ac 80MHz Mode




   Channel    Marker Delta               On Time    Total Time   Duty cycle    Limit
                              Number
    (MHz)        (ms)                     (ms)         (ms)         (%)         (%)
     5540        3.526            6      21.156       101.3        20.88       17.00
     5550        2.716            7      19.012       101.3        18.77       17.00
     5530        3.248            6      19.488       101.3        19.24       17.00




Report No.: BTL-FCCP-3-1812C004                                           Page 16 of 24
                                                                       Report Version: R00


  The hopping type 6 pulse parameters are fixed while the hopping sequence is based on the
  August 2005 NTIA Hopping Frequency List. The initial starting point randomized at run-time and
  each subsequent starting point is incremented by 475. Each frequency in the 100-length segment
  is compared to the boundaries of the EUT Detection Bandwidth and the software creates a
  hopping burst pattern in accordance with Section 7.4.1.3 Method #2 Simulated Freqeuncy
  Hopping Radar Waveform Generating Subsystem of FCC 06-96. The frequency of the signal
  generator is incremented in 1 MHz steps from FL to FH for each successive trial. This incremental
  sequence is repeated as required to generate a minimum of 30 total trials and to maintain a
  uniform frequency distribution over the entire Detection Bandwidth.

  The signal monitoring equipment consists of a spectrum analyzer set to display 8001 bins on the
  horizontal axis. The time-domain resolution is 2 msec / bin with a 16 second sweep time, meeting
  the 10 second short pulse reporting criteria. The aggregate ON time is calculated by multiplying
  the number of bins above a threshold during a particular observation period by the dwell time per
  bin, with the analyzer set to peak detection and max hold.

  Should multiple RF ports be utilized for the Master and/or Slave devices (for example, for diversity
  or MIMO implementations), additional combiner/dividers are inserted between the Master
  Combiner/Divider and the pad connected to the Master Device (and/or between the Slave
  Combiner/Divider and the pad connected to the Slave Device). Additional pads are utilized such
  that there is one pad at each RF port on each EUT.




Report No.: BTL-FCCP-3-1812C004                                                         Page 17 of 24
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  5.2 CALIBRATION OF DFS DETECTION THRESHOLD LEVEL
  A 50 ohm load is connected in place of the spectrum analyzer, and the spectrum analyzer is
  connected in place of the master device and the signal generator is set to CW mode. The
  amplitude of the signal generator is adjusted to yield a level of —82 dBm as measured on the
  spectrum analyzer.

  Without changing any of the instrument settings, the spectrum analyer is reconnected to the
  Common port of the Spectrum Analyzer Combiner/Divider. Measure the amplitude and calculate
  the difference from —82 dBm. Adjust the Reference Level Offset of the spectrum analyzer to this
  difference.
  The spectrum analyzer displays the level of the signal generator as received at the antenna ports
  of the Master Device. The interference detection threshold may be varied from the calibrated
  value of —82 dBm and the spectrum analyzer will still indicate the level as received by the Master
  Device.
  Set the signal generator to produce a radar waveform, trigger a burst manually and measure the
  level on the spectrum analyzer. Readjust the amplitude of the signal generator as required so that
  the peak level of the waveform is at a displayed level equal to the required or desired interference
  detection threshold. Separate signal generator amplitude settings are determined as required for
  each radar type.



                   ‘   Antenna Port RF Connections to Test Instrument Setup        ‘




                             |
                       Master Device
                                                                ol  Slave
                                                                    Device




                  Controller and Server,                       Host Computer,


                       with MPEG file                  with MPEG Player and Codec




  5.3 DEVIATION FROM TEST STANDARD
  No deviation.




Report No.: BTL—FCCP—3—1812C004                                                            Page 18 of 24
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 6. TEST RESULTS

  6.1 SUMMARY OF TEST RESULT


                                               Test Mode and
   Clause          Test Parameter                                       Remarks          Pass/Fail
                                                  Channel
    15.407    DFS Detection Threshold                 -               No Applicable          N/A
              Channel Availability Check
    15.407                                            -               Not Applicable         N/A
                         Time
    15.407       Channel Move Time         11ac 80MHz 5530 MHz          Applicable           Pass
                   Channel Closing
    15.407                                 11ac 80MHz 5530 MHz          Applicable           Pass
                  Transmission Time
    15.407     Non- Occupancy Period       11ac 80MHz 5530 MHz          Applicable           Pass
    15.407        Uniform Spreading                   -               Not Applicable         N/A
    15.407    U-NII Detection Bandwidth               -               Not Applicable         N/A

  6.2 TEST MODE: DEVICE OPERATING IN MASTER MODE.
  The EUT is slave equipment, it need a master device when testing.
  Master with injection at the Master. (Radar Test Waveforms are injected into the Master)




Report No.: BTL-FCCP-3-1812C004                                                         Page 19 of 24
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  6.3 DFS DETECTION THRESHOLD

  Calibration:

  The EUT is slave equipment and it with a max gain is 4.45 dBi.
  For a detection threshold level of -62dBm and the master antenna gain is 2.28 dBi, required
  detection threshold is -59.72 dBm (= -62+2.28).

  Note: Maximum Transmit Power is less than 200 milliwatt in this report, so detection threshold
  level is -62dBm.




                                         Radar Signal 0




Report No.: BTL-FCCP-3-1812C004                                                       Page 20 of 24
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  6.4 CHANNEL CLOSING TRANSMISSION AND CHANNEL MOVE TIME WLAN TRAFFIC

  TX (11n 80MHz Mode )

  Radar signal 0




  Note:   T0 denotes the Radar Injection Start.
          T1 denotes the start of Channel Move Time upon the end of the last Radar burst.
          T2 denotes the data transmission time of 200ms from T1.
          T3 denotes the end of Channel Move Time.




  Note: An expanded plot for the device vacates the channel in the required 500ms

Report No.: BTL-FCCP-3-1812C004                                                     Page 21 of 24
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                                    11ac 80MHz Mode
               Item               Measured Value(s)                Limit(s)
        Channel Move Time            0.2374941                       10
                                                      200 milliseconds + an aggregate of
        Channel Close Time               0.0          60 milliseconds over remaining 10
                                                                second period




Report No.: BTL-FCCP-3-1812C004                                                    Page 22 of 24
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  6.5 NON- OCCUPANCY PERIOD

  During the 30 minutes observation time, UUT did not make any transmissions on a channel after a
  radar signal was detected on that channel by either the Channel Availability Check or the
  In-Service Monitoring.


                                    TX (11ac 80MHz Mode)
                                 5530 Non-Occupancy perrod




Report No.: BTL-FCCP-3-1812C004                                                     Page 23 of 24
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   7. EUT TEST PHOTO




                                  End of Test Report
Report No.: BTL-FCCP-3-1812C004                           Page 24 of 24
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Document Created: 2019-03-28 13:51:25
Document Modified: 2019-03-28 13:51:25

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