Test Report DFS

FCC ID: C3K1797

Test Report

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FCCID_4311089

 DFS PORTION of FCC 47 CFR PART 15 SUBPART E
DFS PORTION of INDUSTRY CANADA RSS-247 ISSUE 2

         CERTIFICATION TEST REPORT

                      FOR

           WIRELESS INPUT DEVICE

             MODEL NUMBER: 1797

               FCC ID: C3K1797
                IC: 3048A-1797

        REPORT NUMBER: 12781776-E4V2

           ISSUE DATE: JUNE 04, 2019

                 Prepared for
             MICROSOFT CORP.
             1 MICROSOFT WAY
        REDMOND, WA 98052-8300, U.S.A.

                   Prepared by
         UL VERIFICATION SERVICES INC.
             47173 BENICIA STREET
           FREMONT, CA 94538, U.S.A.
               TEL: (510) 319-4000
               FAX: (510) 661-0888




             NVLAP LAB CODE 200065-0


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797

                                                 Revision History



            Issue
 Rev.       Date              Revisions                                                           Revised By
  V1        05/20/19          Initial Issue                                                       --
                              Section 3 – RF report reference updated
  V2        06/04/19                                                                              Henry Lau
                              Section 6.1.5/6.1.6 – Master Device Description




                                     Page 2 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                                    DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                                 IC: 3048A-1797

                                               TABLE OF CONTENTS
1.      ATTESTATION OF TEST RESULTS ..................................................................................4

2.      TEST METHODOLOGY ......................................................................................................5

3.      REFERENCE DOCUMENTS ...............................................................................................5

4.      FACILITIES AND ACCREDITATION ..................................................................................5

5.      CALIBRATION AND UNCERTAINTY .................................................................................5
     5.1.     MEASURING INSTRUMENT CALIBRATION ...............................................................5
     5.2.     SAMPLE CALCULATION .............................................................................................5
     5.3.     MEASUREMENT UNCERTAINTY ................................................................................5

6.      DYNAMIC FREQUENCY SELECTION ................................................................................6
     6.1. OVERVIEW ..................................................................................................................6
       6.1.1. LIMITS ...................................................................................................................6
       6.1.2. TEST AND MEASUREMENT SYSTEM ...............................................................10
       6.1.3. TEST AND MEASUREMENT SOFTWARE..........................................................12
       6.1.4. TEST ROOM ENVIRONMENT ............................................................................12
       6.1.5. SETUP OF EUT...................................................................................................13
       6.1.6. DESCRIPTION OF EUT ......................................................................................14
     6.2. RESULTS FOR 20 MHz BANDWIDTH .......................................................................16
       6.2.1. TEST CHANNEL .................................................................................................16
       6.2.2. RADAR WAVEFORM AND TRAFFIC ..................................................................16
       6.2.3. OVERLAPPING CHANNEL TESTS .....................................................................19
       6.2.4. MOVE AND CLOSING TIME ...............................................................................19
       6.2.5. 30-MINUTE NON-OCCUPANCY PERIOD ...........................................................23

7.      SETUP PHOTOS ...............................................................................................................24




                                     Page 3 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
       This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


1. ATTESTATION OF TEST RESULTS
COMPANY NAME:                      MICROSOFT CORP.
                                   1 MICROSOFT WAY
                                   REDMOND, WA 98052-8300, U.S.A.

EUT DESCRIPTION:                   WIRELESS INPUT DEVICE

MODEL:                             1797

SERIAL NUMBER:                     02630007526912

DATE TESTED:                       APRIL 29 and 30, 2019

                                         APPLICABLE STANDARDS
                              STANDARD                                                 TEST RESULTS
             DFS Portion of CFR 47 Part 15 Subpart E                                        Complies
       DFS Portion of INDUSTRY CANADA RSS-247 Issue 2                                       Complies

UL Verification Services Inc. tested the above equipment in accordance with the requirements
set forth in the above standards. The test results show that the equipment tested is capable of
demonstrating compliance with the requirements as documented in this report.

The results documented in this report apply only to the tested sample, under the conditions and
modes of operation as described herein. It is the manufacturer's responsibility to assure that
additional production units of this model are manufactured with identical electrical and
mechanical components. All samples tested were in good operating condition throughout the
entire test program. Measurement Uncertainties are published for informational purposes only
and were not taken into account unless noted otherwise.

This document may not be altered or revised in any way unless done so by UL Verification
Services Inc. and all revisions are duly noted in the revisions section. Any alteration of this
document not carried out by UL Verification Services Inc. will constitute fraud and shall nullify
the document. This report must not be used by the client to claim product certification,
approval, or endorsement by NVLAP, NIST, any agency of the Federal Government, or any
agency of the U.S. government.

Approved & Released For
UL Verification Services Inc. By:                               Prepared By:




HENRY LAU                                                       DOUG ANDERSON
Project Engineer                                                Test Engineer
CONSUMER TECHNOLOGY DIVISION                                    CONSUMER TECHNOLOGY DIVISION
UL Verification Services Inc.                                   UL Verification Services Inc.

                                     Page 4 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


2. TEST METHODOLOGY
The tests documented in this report were performed in accordance with the DFS portion of FCC
CFR 47 Part 2, FCC CFR 47 Part 15, FCC 06-96, FCC KDB 789033, KDB 905462 D02 and
D03 and RSS-247 Issue 2.


3. REFERENCE DOCUMENTS
Measurements of transmitter parameters as referenced in this report are documented in UL
Verification Services report number 12781776-E3V4.


4. FACILITIES AND ACCREDITATION
The test sites and measurement facilities used to collect data are located at 47173 and 47266
Benicia Street, and 47658 Kato Road, Fremont, California, USA. Specific facilities are also
identified in the test results sections.

The test sites and facilities are covered under FCC Test Firm Registration # 208313. Chambers
are covered under Industry Canada company address and respective code.

UL Verification Services Inc. is accredited by NVLAP, Laboratory Code 200065-0.


5. CALIBRATION AND UNCERTAINTY
   5.1.          MEASURING INSTRUMENT CALIBRATION
The measuring equipment utilized to perform the tests documented in this report has been
calibrated in accordance with the manufacturer's recommendations, and is traceable to
recognized national standards.


   5.2.          SAMPLE CALCULATION

Where relevant, the following sample calculation is provided:
      Field Strength (dBuV/m) = Measured Voltage (dBuV) + Antenna Factor (dB/m) +
      Cable Loss (dB) – Preamp Gain (dB)
      36.5 dBuV + 18.7 dB/m + 0.6 dB – 26.9 dB = 28.9 dBuV/m


   5.3.          MEASUREMENT UNCERTAINTY
Where relevant, the following measurement uncertainty level has been estimated for tests
performed on the apparatus:

                 PARAMETER                              UNCERTAINTY
 Time                                                       ± 0.02 %

The Uncertainty figure is valid to a confidence level of 95%.

                                     Page 5 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


6. DYNAMIC FREQUENCY SELECTION

   6.1.          OVERVIEW
       6.1.1. LIMITS


INDUSTRY CANADA

IC RSS-247 is closely harmonized with FCC Part 15 DFS rules. The deviations are as follows:

RSS-247 Issue 2

Note: For the band 5600–5650 MHz, no operation is permitted.

Until further notice, devices subject to this annex shall not be capable of transmitting in the band
5600–5650 MHz. This restriction is for the protection of Environment Canada weather radars
operating in this band.


FCC

§15.407 (h), FCC KDB 905462 D02 “COMPLIANCE MEASUREMENT PROCEDURES FOR
UNLICENSED-NATIONAL INFORMATION INFRASTRUCTURE DEVICES OPERATING IN
THE 5250-5350 MHz AND 5470-5725 MHz BANDS INCORPORATING DYNAMIC
FREQUENCY SELECTION” and KDB 905462 D03 “U-NII CLIENT DEVICES WITHOUT
RADAR DETECTION CAPABILITY”.




                                     Page 6 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797

Table 1: Applicability of DFS requirements prior to use of a channel
    Requirement                       Operational Mode
                                                               Client (without              Client (with
                                                  Master
                                                               radar detection)             radar 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
Requirement                              Operational Mode
                                         Master        Client                                       Client
                                                       (without DFS)                                (with DFS)
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


Additional requirements for                     Master Device or Client with               Client
devices with multiple bandwidth                 Radar DFS                                  (without DFS)
modes
U-NII Detection Bandwidth and                   All BW modes must be                       Not required
Statistical Performance Check                   tested
Channel Move Time and Channel                   Test using widest BW mode Test using the
Closing Transmission Time                       available                 widest BW 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 all 20
MHz channel blocks and a null frequency between the bonded 20 MHz channel blocks.




                                     Page 7 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797

Table 3: Interference Threshold values, Master or Client incorporating In-Service
Monitoring
Maximum Transmit Power                                              Value
                                                                    (see notes)
E.I.R.P. ≥ 200 mill watt                                            -64 dBm
E.I.R.P. < 200 mill watt and                                        -62 dBm
power spectral density < 10 dBm/MHz
E.I.R.P. < 200 mill watt that do not meet power spectral            -64 dBm
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.
Note 3: E.I.R.P. is based on the highest antenna gain. For MIMO devices refer to KDB
publication 662911 D01.



Table 4: DFS Response requirement values
Parameter                                                                             Value
Non-occupancy period                                                                  30 minutes
Channel Availability Check Time                                                       60 seconds
Channel Move Time                                                                     10 seconds (See Note 1)
Channel Closing Transmission Time                                                     200 milliseconds +
                                                                                      approx. 60 milliseconds
                                                                                      over remaining 10 second
                                                                                      period.
                                                                                      (See Notes 1 and 2)
U-NII Detection Bandwidth                                                             Minimum 100% of the U-
                                                                                      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.




                                     Page 8 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797

Table 5 – Short Pulse Radar Test Waveforms
Radar Pulse             PRI                                       Pulses                     Minimum           Minimum
Type Width             (usec)                                                               Percentage          Trials
        (usec)                                                                             of Successful
                                                                                             Detection
  0         1                  1428                                 18                      See Note 1         See Note
                                                                                                                  1
  1         1      Test A: 15 unique                                      60%                                     30
                 PRI values randomly
                 selected from the list           Roundup:
                  of 23 PRI values in   {(1/360) x (19 x 106 PRIusec)}
                        table 5a
                   Test B: 15 unique
                 PRI values randomly
                  selected within the
                  range of 518-3066
                      usec. With a
                 minimum increment
                 of 1 usec, 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 6 – Long Pulse Radar Test Signal
  Radar            Pulse        Chirp         PRI         Pulses      Number         Minimum              Minimum
 Waveform          Width        Width        (µsec)        per           of         Percentage             Trials
  Type             (µsec)       (MHz)                     Burst        Bursts      of Successful
                                                                                     Detection
      5           50-100         5-20        1000-          1-3          8-20          80%                    30
                                             2000



Table 7 – Frequency Hopping Radar Test Signal
 Radar      Pulse  PRI   Pulses Hopping       Hopping                                 Minimum                Minimum
Waveform Width (µsec)      per     Rate     Sequence                                Percentage of             Trials
  Type      (µsec)        Hop      (kHz)      Length                                 Successful
                                              (msec)                                  Detection
   6          1    333      9     0.333         300                                     70%                      30




                                     Page 9 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


       6.1.2. TEST AND MEASUREMENT SYSTEM


RADIATED METHOD SYSTEM BLOCK DIAGRAM



            Burst Generator
                                              10 MHz
                                            Frequency
           Signal Generator                 Reference                 Spectrum Analyzer


          RF OUT                                                                     RF IN
                       Common
                                                                                               Common
            Signal Generator
            Combiner/Divider                                                      Spectrum Analyzer
                                                                                   Combiner/Divider
              Port 1        Port 2
                                                 Step Attenuator                  Port 1         Port 2


                                                Isolator      Isolator
                                                                             Step Attenuator




                                 Monitoring
                                  Antenna




          Radar                                                                                 EUT
         Antenna                                                                              Antenna


                                                   3 meters




                                     Page 10 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


SYSTEM OVERVIEW

The short pulse and long pulse signal generating system utilizes the NTIA software. The Vector
Signal Generator has been validated by the NTIA. The hopping signal generating system
utilizes the CCS simulated hopping method and system, which has been validated by the DoD,
FCC and NTIA. The software selects waveform parameters from within the bounds of the signal
type on a random basis using uniform distribution.

The short pulse types 1, 2, 3 and 4, and the long pulse type 5 parameters are randomized at
run-time.

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
Frequency Hopping Radar Waveform Generating Subsystem of KDB 905462 D02. The
frequency of the signal generator is incremented in 1 MHz steps from F L 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. 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.


SYSTEM CALIBRATION

A 50-ohm load is connected in place of the spectrum analyzer, and the spectrum analyzer is
connected to a horn antenna via a coaxial cable, with the reference level offset set to (horn
antenna gain – coaxial cable loss). The signal generator is set to CW mode. The amplitude of
the signal generator is adjusted to yield a level of –64 dBm as measured on the spectrum
analyzer.

Without changing any of the instrument settings, the spectrum analyzer is reconnected to the
Common port of the Spectrum Analyzer Combiner/Divider. The Reference Level Offset of the
spectrum analyzer is adjusted so that the displayed amplitude of the signal is –64 dBm.

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 –64 dBm and the spectrum analyzer will still indicate the level as received by
the Master Device.




                                     Page 11 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                        DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                     IC: 3048A-1797


ADJUSTMENT OF DISPLAYED TRAFFIC LEVEL

A link is established between the Master and Slave and the distance between the units is
adjusted as needed to provide a suitable received level at the Master and Slave devices. The
audio test file is streamed from the Master device to the Slave device to generate WLAN traffic.
The traffic channel loading is the highest that the EUT is capable of producing. The monitoring
antenna is adjusted so that the WLAN traffic level, as displayed on the spectrum analyzer, is at
lower amplitude than the radar detection threshold.


TEST AND MEASUREMENT EQUIPMENT

The following test and measurement equipment was utilized for the tests documented in this
report:

                                 TEST EQUIPMENT LIST
                 Description               Manufacturer                     Model      ID No. Cal Due
    Spectrum Analyzer, PXA, 3Hz to 44GHz     Keysight                      N9030A       T459 01/24/20
  Signal Generator, MXG X-Series RF Vector    Agilent                      N5182B      T1633 02/08/20



        6.1.3. TEST AND MEASUREMENT SOFTWARE

The following test and measurement software was utilized for the tests documented in this report:

                                              TEST SOFTWARE LIST
                Name                           Version                Test / Function
          Aggregate Time-PXA                     3.1    Channel Loading and Aggregate Closing Time
               PXA Read                           3.1               Signal Generator Screen Capture
             SGXProject.exe                       1.7           Radar Waveform Generation and Download




        6.1.4. TEST ROOM ENVIRONMENT

The test room temperature and humidity shall be maintained within normal temperature of
15~35 °C and normal humidity 20~75% (relative humidity).

ENVIRONMENT CONDITION

 Parameter                Value
 Temperature              24.3 and 24.0 C
 Humidity                 35 and 35 %




                                     Page 12 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
    This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


       6.1.5. SETUP OF EUT

RADIATED METHOD EUT TEST SETUP




                   Master Device with                                        Slave Device
                  Embedded Audio File                                           (EUT)




                            LCD TV                                              Headset




          To Internet



SUPPORT EQUIPMENT

The following support equipment was utilized for the tests documented in this report:

                             PERIPHERAL SUPPORT EQUIPMENT LIST
          Description             Manufacturer Model     Serial Number                              FCC ID
         Master Device             Microsoft    1787     008786183517               C3K1802 and
                                                                                      C3K1803
          15" LCD TV                    Polaroid        TLX-01511C      02006           DoC
           Headset                       Sony           Not Marked No Serial Number     DoC




                                     Page 13 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


       6.1.6. DESCRIPTION OF EUT

The EUT operates over the 5250-5350 MHz and 5470-5725 MHz ranges.

The EUT is a Slave Device without Radar Detection.

The highest power level within these bands is 12.39 dBm EIRP in the 5250-5350 MHz band and
12.19 dBm EIRP in the 5470-5725 MHz band.

The EUT is constructed using one main and one sub antenna. Each has a respective peak gain
of 2.77 dBi and 4.02 dBi in the 5250-5350 MHz band and 3.82 dBi and 4.04 in the 5470-5725
MHz band. In addition, each has a respective minimum gain of 1.76 dBi and 3.08 dBi in the
5250-5350 MHz band and 2.74 dBi and 2.15 dBi in the 5470-5725 MHz band.

The rated output power of the Master unit is > 23dBm (EIRP). Therefore the required
interference threshold level is –64 dBm. After correction for procedural adjustments, the
required radiated threshold at the antenna port is –64 + 1 = -63 dBm.

The calibrated radiated DFS Detection Threshold level is set to –64 dBm. The tested level is
lower than the required level hence it provides a margin to the limit.

The EUT uses two transmitter/receiver chains, each connected to an antenna to perform
radiated tests.

WLAN traffic is generated by streaming the audio test file “5_GHz_Audio_Test_File.WAV” from
the Master to the Slave. The channel loading is the highest that the EUT is capable of
producing.

TPC is not required since the maximum EIRP is less than 500 mW (27 dBm).

The EUT utilizes the 802.11a/n architecture. One nominal channel bandwidth, 20 MHz, is
implemented.

The firmware installed in the EUT is revision 4.7.1774.0.

The firmware installed in the Master Device is revision 2.37.52428.52428. The DFS software
installed in the Master Device is version 1.1.50.1.




                                     Page 14 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


UNIFORM CHANNEL SPREADING

This is requirement not applicable to Slave Devices.



OVERVIEW OF MASTER DEVICE WITH RESPECT TO §15.407 (h) REQUIREMENTS

The Master Device is a 1787 that contains two different radio modules operating in the 5 GHz
band. Each radio module has its’ own separate FCC ID: C3K1802 and C3K1803. The minimum
antenna gain in for FCC ID C3k1802 is 6.3 dBi. The minimum antenna gain for FCC ID
C3K1803 is 4.7 dBi.

The rated output power of the Master unit is > 23dBm (EIRP). Therefore the required
interference threshold level is –64 dBm. After correction for procedural adjustments, the
required radiated threshold at the antenna port is –64 + 1 = -63 dBm.

The calibrated radiated DFS Detection Threshold level is set to –64 dBm. The tested level is
lower than the required level hence it provides a margin to the limit.

The firmware installed in the Master Device is revision 2.37.52428.52428. The DFS software
installed in the Master Device is version 1.1.50.1.




                                     Page 15 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


   6.2.          RESULTS FOR 20 MHz BANDWIDTH

       6.2.1. TEST CHANNEL

All tests were performed at a channel center frequency of 5500 MHz.


       6.2.2. RADAR WAVEFORM AND TRAFFIC


RADAR WAVEFORM




             SHORT PULSE RADAR TYPE 0 AT MASTER




                                     Page 16 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


TRAFFIC



             SLAVE TRAFFIC




                                     Page 17 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


CHANNEL LOADING



             CHANNEL LOADING




The level of traffic loading on the channel by the EUT is 11.70%

The channel loading is the highest the EUT is capable of producing.




                                     Page 18 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


       6.2.3. OVERLAPPING CHANNEL TESTS

RESULTS

These tests are not applicable.


       6.2.4. MOVE AND CLOSING TIME

REPORTING NOTES

The reference marker is set at the end of last radar pulse.

The delta marker is set at the end of the last WLAN transmission following the radar pulse. This
delta is the channel move time.

The aggregate channel closing transmission time is calculated as follows:

Aggregate Transmission Time =
(Number of analyzer bins showing transmission) * (dwell time per bin)

The observation period over which the aggregate time is calculated begins at (Reference
Marker + 200 msec) and ends no earlier than (Reference Marker + 10 sec).



RESULTS

                  Channel Move Time                                      Limit
                        (sec)                                            (sec)
                       0.1636                                              10

  Aggregate Channel Closing Transmission Time                            Limit
                    (msec)                                              (msec)
                       0                                                  60




                                     Page 19 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


MOVE TIME




             MOVE TIME




                                     Page 20 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


CHANNEL CLOSING TIME



             CLOSING TIME




                                     Page 21 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797


AGGREGATE CHANNEL CLOSING TRANSMISSION TIME

No transmissions are observed during the aggregate monitoring period.



             AGGREGATE CLOSING TIME




                                     Page 22 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 12781776-E4V2                                                                       DATE: JUNE 04, 2019
FCC ID: C3K1797                                                                                    IC: 3048A-1797



       6.2.5. 30-MINUTE NON-OCCUPANCY PERIOD

RESULTS

No EUT transmissions were observed on the test channel during the 30-minute observation
time.




             30-MINUTE NON-OCCUPANCY PERIOD




                                     Page 23 of 25
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 319-4000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.



Document Created: 2019-06-10 05:07:33
Document Modified: 2019-06-10 05:07:33

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