Test report DFS

FCC ID: 2AFZZ-XME1A

Test Report

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FCCID_3886680

             FCC RF Test Report                                                     Report No. : FZ842002




  DYNAMIC FREQUENCY SELECTION
                               DFS Test Report
       APPLICANT                :   Xiaomi Communications Co., Ltd.
       EQUIPMENT                :   Mobile Phone
       BRAND NAME               :   MI
       MODEL NAME               :   M1803E1A
       FCC ID                   : 2AFZZ-XME1A
       STANDARD                 : FCC Part 15 Subpart E
       CLASSIFICATION           : (NII) Unlicensed National Information Infrastructure

       The product was received on Apr. 20, 2018 and completely tested on May 30, 2018. We,
       SPORTON INTERNATIONAL INC., would like to declare that the tested sample has been
       evaluated in accordance with the procedures and shown to be compliant with the applicable
       technical standards.
       The test results in this report apply exclusively to the tested model / sample. Without written
       approval of SPORTON INTERNATIONAL INC., the test report shall not be reproduced except
       in full.




         Reviewed by: Joseph Lin / Supervisor




           Approved by: Jones Tsai / Manager


                               SPORTON INTERNATIONAL INC.
                  st
No. 52, Hwa Ya 1 Rd., Hwa Ya Technology Park, Kwei-Shan District, Tao Yuan City, Taiwan, R.O.C.




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  TEL : 886-3-327-3456                                                    Report Issued Date : Jun. 11, 2018
  FAX : 886-3-328-4978                                                    Report Version     : Rev. 01
  FCC ID : 2AFZZ-XME1A


             FCC RF Test Report                                                                                               Report No. : FZ842002




                                                 TABLE OF CONTENTS

1   GENERAL DESCRIPTION .......................................................................................................................... 5
    1.1      Applicant ........................................................................................................................................... 5
    1.2      Manufacturer ..................................................................................................................................... 5
    1.3      Feature of Equipment Under Test .................................................................................................... 5
    1.4      Product Specification of Equipment Under Test ............................................................................... 6
    1.5      Modification of EUT .......................................................................................................................... 6
    1.6      Testing Site ....................................................................................................................................... 7
    1.7      Applied Standards ............................................................................................................................ 7
    1.8      Support Unit used in test configuration and system ......................................................................... 7
2   REQUIREMENTS AND PARAMETERS FOR DFS TEST .......................................................................... 8
    2.1      Applicability of DFS Requirements ................................................................................................... 8
    2.2      Interference Threshold values, Master or Client incorporating In-Service Monitoring ................... 10
    2.3      DFS Response requirement values ................................................................................................ 11
    2.4      Short Pulse Radar Test Waveforms ............................................................................................... 12
3   CALIBRATION SETUP AND DFS TEST RESULTS ................................................................................ 13
    3.1      Calibration of Radar Waveform ...................................................................................................... 13
    3.2      In-Service Monitoring: Channel Move Time, Channel Closing Transmission Time and
             Non-Occupancy Period ................................................................................................................... 15
4   LIST OF MEASURING EQUIPMENT ........................................................................................................ 21

APPENDIX A. SETUP PHOTOGRAPHS




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         FCC RF Test Report                                                Report No. : FZ842002




                                 REVISION HISTORY

  REPORT NO.       VERSION                         DESCRIPTION                     ISSUED DATE

    FZ842002        Rev. 01   Initial issue of report                               Jun. 11, 2018




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           FCC RF Test Report                                                       Report No. : FZ842002




     SUMMARY OF DYNAMIC FREQUENCY SELECTION TEST

                 Bandwidth
    UNII                            Description         Measured                  Limit                Result
                and Channel


                                Channel Move Time        0.6593s                 10 sec                 Pass

                   80MHz                                 <200ms +            200 ms +
U-NII Band 2C                     Channel Closing
                  (CH106)                                  52ms       aggregate of 60 ms over           Pass
5500-5700MHz                     Transmission time
                  5530MHz                              (aggregate)     remaining 10 s period
                                  Non-Occupancy       No transmission
                                  Period and Client     or Beacons          30 minutes                  Pass
                                    Beacon Test          occurred
    Note: Since the product is client without radar detection function, only Channel Move Time, Channel
    Closing Transmission Time and Non-Occupancy Period Test are required to be performed.




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1 General Description
1.1     Applicant
      Xiaomi Communications Co., Ltd.
      The Rainbow City of China Resources,NO.68,Qinghe Middle Street,Haidian District,Beijing,China


1.2     Manufacturer
      Xiaomi Communications Co., Ltd.
      The Rainbow City of China Resources,NO.68,Qinghe Middle Street,Haidian District,Beijing,China


1.3     Feature of Equipment Under Test
                                                 Product Feature
      Equipment                                    Mobile Phone
      Brand Name                                   MI
      FCC ID                                       2AFZZ-XME1A
                                                   CDMA/EV-DO/GSM/GPRS/EGPRS/WCDMA/HSPA/
                                                   DC-HSDPA/HSPA+(16QAM uplink is not
                                                   supported)/LTE/NFC
                                                   WLAN 2.4GHz 802.11b/g/n HT20
      EUT supports Radios application
                                                   WLAN 5GHz 802.11a/n HT20/HT40
                                                   WLAN 5GHz 802.11ac VHT20/VHT40/VHT80
                                                   Bluetooth v3.0 + EDR/Bluetooth v4.0 LE/ Bluetooth v4.2
                                                   LE/ Bluetooth v5.0 LE
      HW Version                                   P2
      SW Version                                   MIUI 9
      EUT Stage                                    Identical Prototype
      Remark:
      1. The above EUT's information was declared by manufacturer. Please refer to the specifications or
         user's manual for more detailed description.
      2. There are two types of EUT, the difference between two samples is for memory, the sample 1 is
         6+64GB capacity and the sample 2 is 6+128GB capacity. According to the difference, we only
         choose sample 1 to perform full test.




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1.4     Product Specification of Equipment Under Test
                             Product Specification subjective to this standard
  DFS Function                            Client without radar detection function
                                          5260 MHz ~ 5320 MHz
  Tx/Rx Channel Frequency Range
                                          5500 MHz ~ 5700 MHz
                                          <5260 MHz ~ 5320 MHz>
                                          802.11a
                                          802.11n HT20
                                          802.11n HT40
                                          802.11ac VHT20
                                          802.11ac VHT40
                                          802.11ac VHT80
  EUT support WLAN function
                                          <5500 MHz ~ 5700 MHz >
                                          802.11a
                                          802.11n HT20
                                          802.11n HT40
                                          802.11ac VHT20
                                          802.11ac VHT40
                                          802.11ac VHT80
                                          802.11a/n : OFDM (BPSK / QPSK / 16QAM / 64QAM)
  Type of Modulation
                                          802.11ac : OFDM (BPSK / QPSK / 16QAM / 64QAM / 256QAM)

1.5     Modification of EUT
      No modifications are made to the EUT during all test items.




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1.6       Testing Site
       Test Site               SPORTON INTERNATIONAL INC.
                               No.52, Huaya 1st Rd., Guishan Dist.,
                               Taoyuan City, Taiwan (R.O.C.)
       Test Site Location
                               TEL: +886-3-327-3456
                               FAX: +886-3-328-4978
                                                            Sporton Site No.
       Test Site No.
                                                               DFS02-HY



1.7       Applied Standards
      According to the specifications of the manufacturer, the EUT must comply with the requirements of the
      following standards:
           FCC Part 15 Subpart E
           FCC KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02
           FCC KDB 905462 D03 UNII Clients Without Radar Detection New Rules v01r02


      Remark: All test items were verified and recorded according to the standards and without any deviation
      during the test.



1.8 Support Unit used in test configuration and system
      Item Equipment Trade Name          Model Name         FCC ID      HW / FW Version        Power Cord

       1.   WLAN AP      Motorola    AP-7532B            UZ7AP7532     FW: WiNG v5.8        Unshielded, 1.8 m
                                                                                            AC I/P:
                                                                                            Unshielded, 1.2 m
       2.   Notebook     Lenovo      Edge E335           PPD-AR5B95 N/A
                                                                                            DC O/P:
                                                                                            Shielded, 1.8 m




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          FCC RF Test Report                                                             Report No. : FZ842002


2 Requirements and Parameters for DFS Test
2.1     Applicability of DFS Requirements
      EUT is client and operates as client without radar detection function.

          Table 1: Applicability of DFS Requirements Prior to Use of a Channel

                                                                       Operational Mode

                                                                               Client             Client With
                    Requirement
                                                        Master           Without Radar               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

             U-NII Detection Bandwidth                    Yes             Not required                 Yes



           Table 2: Applicability of DFS requirements during normal operation

                                                                       Operational Mode
                                                                               Client                 Client
                    Requirement
                                                        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




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                                                                       Operational Mode
       Additional requirements for devices                 Master or
                                                                                             Client
          with multiple bandwidth modes                   Client With
                                                                                 Without Radar Detection
                                                       Radar Detection
          U-NII Detection Bandwidth and                 All BW modes
                                                                                         Not required
          Statistical Performance Check                 must be tested
                                                                                     Test using the widest
         Channel Move Time and Channel               Test using widest BW
                                                                                     BW mode available
              Closing Transmission Time                 mode available
                                                                                           for the link
                    All other tests                  Any single BW mode                  Not required
       Note
       Frequencies selected for statistical performance check (Section 7.8.4) should include
       several frequencies within the radar detection bandwidth and frequencies near the edge of
       the radar detection bandwidth. For 802.11 devices it is suggested to select frequencies in
       each of the bonded 20 MHz channels and the channel center frequency.




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2.2 Interference Threshold values, Master or Client incorporating
    In-Service Monitoring
                  Maximum Transmit Power                                Value (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.
     The radar Detection Threshold, lowest antenna gain is the parameter of Interference radar DFS
     detection threshold, The Interference Detection Threshold is the ( -62dBm) + (0) [dBi]+ 1 dB= -61 dBm.




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2.3 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.
      Channel Closing Transmission Time             200 milliseconds + an aggregate of 60 milliseconds over
                                                    remaining 10 second period. See Notes 1 and 2.
      U-NII Detection Bandwidth                     Minimum 100% of the 99% power bandwidth
                                                    See Note 3.
      Note 1: The instant that the Channel Move Time and the Channel Closing Transmission Time begins
      is as follows:
         • For the Short pulse radar Test Signals this instant is the end of the Burst.
         • For the Frequency Hopping radar Test Signal, this instant is the end of the last radar Burst
         generated.
         • For the Long Pulse radar Test Signal this instant is the end of the 12 second period defining the
         radar transmission.
      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 Channel changes (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 is used and for each
      frequency step the minimum percentage of detection is 90%. Measurements are performed with no
      data traffic.




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2.4 Short Pulse Radar Test Waveforms
     As the EUT is a Client Device with no Radar Detection, only one type radar pulse is required for the
     testing. Radar Pulse type 0 was used in the evaluation of the Client device for the purpose of
     measuring the Channel Move Time and the Channel Closing Transmission Time.


                                                                              Minimum
                 Pulse
       Radar                                                                Percentage of          Minimum
                 Width       PRI (µsec)        Number of Pulses
       Type                                                                  Successful               Trials
                 (µsec)
                                                                              Detection
         0          1          1428                    18                         60%                   30



                               Test A
         1          1                                                            60%                   30
                               Test B



         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


     Test A: 15 unique PRI values randomly selected from the list of 23 PRI values in Table 5a
     Test B: 15 unique PRI values randomly selected within the range of 518-3066 μsec, with a minimum
     increment of 1 μsec, excluding PRI values selected in Test A


     A minimum of 30 unique waveforms are required for each of the short pulse radar types 2 through 4.
     For short pulse radar type 1, the same waveform is used a minimum of 30 times. 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.


     The aggregate is the average of the percentage of successful detections of short pulse radar types 1-4.




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3 Calibration Setup and DFS Test Results
3.1 Calibration of Radar Waveform
3.1.1 Radar Waveform Calibration Procedure
       The Interference Radar Detection Threshold Level is (-62dBm) + (0) [dBi]+ 1 dB= -61dBm that had
       been taken into account the output power range and antenna gain. The following equipment setup
       was used to calibrate the radiated Radar Waveform. A vector signal generator was utilized to
       establish the test signal level for radar type 0. During this process there were no transmissions by
       either the Master or Client Device. The spectrum analyzer was switched to the zero span (Time
       Domain) at the frequency of the Radar Waveform generator. Peak detection was used. The spectrum
       analyzer resolution bandwidth (RBW) and video bandwidth (VBW) were set to 3 MHz to measure the
       type 0 radar waveform. The spectrum analyzer had offset to compensate and RF cable loss. The
       vector signal generator amplitude was set so that the power level measured at the spectrum analyzer
       was (-62dBm) + (0) [dBi]+ 1 dB= -61 dBm. Capture the spectrum analyzer plots on short pulse radar
       waveform.


3.1.2 Conducted Setup




3.1.3 Calibration Deviation
       There is no deviation with the original standard.




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3.1.4 Radar Waveform Calibration Result
                                    <80MHz / 5530MHz> Radar Type 0
          Radar / DFS detection threshold level and the burst of pulses on the Channel frequency




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3.2 In-Service Monitoring: Channel Move Time, Channel Closing
    Transmission Time and Non-Occupancy Period
3.2.1 Limit of In-Service Monitoring
       The EUT has In-Service Monitoring function to continuously monitor the radar signals, If radar is
       detected, it must leave the channel (Shutdown). The Channel Move Time to cease all transmissions
       on the current Channel upon detection of a Radar Waveform above the DFS Detection Threshold
       within 10 sec. The total duration of 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 Channel changes (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.
       Non-Occupancy Period time is 30 minute during which a Channel will not be utilized after a Radar
       Waveform is detected on that Channel. The non-associated Client Beacon Test is during the 30
       minutes observation time. The EUT should not make any transmissions in the DFS band after EUT
       power up.




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 seonton cas.    FCC RF Test Report                                                         Report No. : FZ842002


3.2.2 Test Procedures
            1.    The radar pulse generator is setup to provide a pulse at frequency that the Master and Client are
                  operating. A type 0 radar pulse with a 1us pulse width and a 1428 us PRI is used for the testing.
                  The vector signal generator is adjusted to provide the radar burst (18 pulses) at a level of
                  approximately —62dBm at the antenna of the Master device.
                  A trigger is provided from the pulse generator to the DFS monitoring system in order to capture
                  the traffic and the occurrence of the radar pulse.
                  A U—NII device operating as a Client Device will associate with the Master at Channel. The
                  MPEG file "TestFile.mpg" specified by the FCC is streamed from the "file computer" through the
                  Master to the Client Device and played in full motion video using Media Player Classic Ver.
                  6.4.8.6 in order to properly load the network for the entire period of the test.
                  When a radar Burst with a level equal to the DFS Detection Threshold + 1dB is generated on the
                  Operating Channel of the U—NIl device. At time TO the Radar Waveform generator sends a Burst
                  of pulse of the radar waveform at Detection Threshold + 1dB.
                  Observe the transmissions of the EUT at the end of the radar Burst on the Operating Channel.
                  Measure and record the transmissions from the EUT during the observation time (Channel Move
                  Time). One 12 seconds plot is reported for the Short Pulse Radar Types 0. The plot for the Short
                  Pulse Radar Types start at the end of the radar burst. The Channel Move Time will be calculated
                  based on the zoom in 600ms plot of the Short Pulse Radar Type.
                  Measurement of the aggregate duration of the Channel Closing Transmission Time method.
                  With the spectrum analyzer set to zero span tuned to the center frequency of the EUT operating
                  channel at the radar simulated frequency, peak detection, and max hold, the dwell time per bin is
                  given by: Dwell (0.4ms)= S (12000ms) / B (30000); where Dwell is the dwell time per spectrum
                  analyzer sampling bin, S is the sweep time and B is the number of spectrum analyzer sampling
                  bins. An upper bound of the aggregate duration of the intermittent control signals of Channel
                  Closing Transmission Time is calculated by: C (ms)= N X Dwell (0.4 ms); where C is the Closing
                  Time, N is the number of spectrum analyzer sampling bins (intermittent control signals) showing
                  a U—NII transmission and Dwell is the dwell time per bin.
                  Measure the EUT for more than 30 minutes following the channel move time to verify that no
                  transmissions or beacons occur on this Channel.
                  The test frequency , bandwidth and data rate as following table:

                               BW / Channel                                    Test Data Rate
                  RHakRasIAIE. / ffRRRESIM
                                                                                     MCSO
                                  YF. MHz




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3.2.3 Test Setup
       Conducted Setup Photo




3.2.4 Test Deviation
       There is no deviation with the original standard.




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 seomovc«s. FCC RF Test Report                                                          Report No. : FZ842002


3.2.5     Result of Channel Move Time, Channel Closing Transmission Time and
Non—Occupancy Period for Client Beacon Test
Test Mode :            Client without radar detection              Temperature :              24~26°C
Test Engineer : |PH Yang                                            Relative Humidity :       |50~55%


     BW /                         Test Item                   Test Result                 Limit          Pass/Fail
   Channel

 HRkAHKE                     Channe! Move Time                  0.6593 s                < 10s                   Pass
IIMAYE. / 4#      Channel Closing Transmission Time          200ms + 52 ms            < 260ms                   Pass

 RkiRzs)                    Non—O
                             on—Occupancy Period
                                           Perio                  > 30                 > 30 min
                                                                                              mi                P ass
 FMJ%. MHz                            pancy
Note: 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 seconds period. The aggregate duration of
control signals will not count quiet periods in between transmissions.




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3.2.6 Channel Move Time, Channel Closing Transmission Time and Non-Occupancy
Period for Client Beacon Test Plots
                                 <80MHz / 5530MHz> In-Service Monitoring
                                       Channel Move Time &
                                Channel Closing Transmission Time




                                                                   Non-associated test
             Non-Occupancy Period
                                                             Master was off. (beacon test)




Note:
Dwell (0.4 ms)= Sweep Time (12000 ms) / Sweep Point Bins (30000)
Channel Closing Transmission Time (200 + 52 ms) = 200 + Number (130) X Dwell (0.4 ms) < 260ms




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3.2.7 Data Traffic and Noise Floor Plots
                                 EUT data traffic (Client)




                              Noise Floor (No transmission)




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  4 List of Measuring Equipment
                                                                           Calibration
 Instrument     Manufacturer   Model No.    Serial No.   Characteristics                  Test Date      Due Date      Remark
                                                                              Date

  Signal          Rohde &                                                                                                DFS
                               SMJ100A       101375      100kHz~6GHz       Jan. 23, 2018 May 30, 2018 Jan. 22, 2019
 Generator        Schwarz                                                                                             (DFS02-HY)

  Spectrum                                                                                                               DFS
                  Keysight       N9010A    MY56070412     10Hz~7GHz        Aug. 08, 2017 May 30, 2018 Aug. 07, 2018
  Analyzer                                                                                                            (DFS02-HY)
                               3Way SMA
                                           ST108-0010                                                                    DFS
Power Divider      Woken         Power                     2G~8GHz             NCR       May 30, 2018      NCR
                                              (#4)                                                                    (DFS02-HY)
                                Divider
                               SMA 2Way
                                                                                                                         DFS
Power Divider      Woken        Power      STI08-0011     2GHz-18GHz           NCR       May 30, 2018      NCR
                                                                                                                      (DFS02-HY)
                                Divider
                               2Way SMA
                                                                                                                         DFS
Power Divider       MTJ          Power      MD10007       0.5G~6GHz            NCR       May 30, 2018      NCR
                                                                                                                      (DFS02-HY)
                                Divider
                               4Way SMA
                                        0120A0205600                                                                     DFS
Power Divider      Woken         Power                    0.5G~6GHz            NCR       May 30, 2018      NCR
                                             2D                                                                       (DFS02-HY)
                                Divider
  NCR: No Calibration Required




  SPORTON INTERNATIONAL INC.                                                             Page Number        : 21 of 21
  TEL : 886-3-327-3456                                                                   Report Issued Date : Jun. 11, 2018
  FAX : 886-3-328-4978                                                                   Report Version     : Rev. 01
  FCC ID : 2AFZZ-XME1A



Document Created: 2018-06-11 18:53:31
Document Modified: 2018-06-11 18:53:31

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