DFS test report

FCC ID: 2AN44-AHR-M8T

Test Report

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FCCID_3909537

DFS PORTION of FCC 47 CFR PART 15 SUBPART E

        CERTIFICATION TEST REPORT

                    FOR

     GENERAL CONSUMER HOME REBOT

         MODEL NUMBER: AHR-M8T

          FCC ID: 2AN44-AHR-M8T

      REPORT NUMBER: 11988903-E4V4

          ISSUE DATE: June 13, 2018

               Prepared for
           MAYFIELD ROBOTICS
          400 CONVENTION WAY
       REDWOOD CITY, CA 94063, U.S.A.

                 Prepared by
       UL VERIFICATION SERVICES INC.
           47173 BENICIA STREET
         FREMONT, CA 94538, U.S.A.
             TEL: (510) 771-1000
             FAX: (510) 661-0888




           NVLAP LAB CODE 200065-0


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T

                                                 Revision History



            Issue
 Rev.       Date              Revisions                                                Revised By
  V1        12/15/17          Initial Issue                                            Michael Heckrotte
                              Correction to FCC ID and EUT
  V2        1/11/18                                                                    Grace Rincand
                              Description
                              Updated Antenna Gains & EIRP –
  V3        6/11/18                                                                    Henry Lau
                              Section 6.1.6
  V4        6/13/18           Removed IC reference in section 6.1.6                    Edgard Rincand




                                     Page 2 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                                          DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T

                                               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.     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
     6.3. RESULTS FOR 40 MHz BANDWIDTH .......................................................................23
       6.3.1. TEST CHANNEL .................................................................................................23
       6.3.2. RADAR WAVEFORM AND TRAFFIC ..................................................................23
       6.3.3. OVERLAPPING CHANNEL TESTS .....................................................................26
       6.3.4. MOVE AND CLOSING TIME ...............................................................................26
       6.3.5. 30-MINUTE NON-OCCUPANCY PERIOD ...........................................................30

7.      SETUP PHOTOS ...............................................................................................................31




                                     Page 3 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
       This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


1. ATTESTATION OF TEST RESULTS
COMPANY NAME:                      MAYFIELD ROBOTICS
                                   400 CONVENTION WAY
                                   REDWOOD CITY, CA 94063, U.S.A.

EUT DESCRIPTION:                   GENERAL CONSUMER DEVICE

MODEL:                             AHR-M8T

SERIAL NUMBER:                     KR017420000002

DATE TESTED:                       NOVEMBER 17. 2017

                                         APPLICABLE STANDARDS
                              STANDARD                                                 TEST RESULTS
             DFS Portion of CFR 47 Part 15 Subpart E                                        Complies


UL Verification Services Inc. tested the above equipment in accordance with the requirements
set forth in the above standards. All indications of Pass/Fail in this report are opinions
expressed by UL Verification Services Inc. based on interpretations and/or observations of test
results. Measurement Uncertainties were not taken into account and are published for
informational purposes only. The test results show that the equipment tested is capable of
demonstrating compliance with the requirements as documented in this report.

Note: The results documented in this report apply only to the tested sample, under the
conditions and modes of operation as described herein. 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 any government.


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




MICHAEL HECKROTTE                                               HENRY LAU
PRINCIPAL ENGINEER                                              EMC ENGINEER
UL Verification Services Inc.                                   UL Verification Services Inc.




                                     Page 4 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


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.


3. REFERENCE DOCUMENTS
Measurements of transmitter parameters as referenced in this report are documented in UL
Report number 11988903-E5V1 FCC IC UNII WLAN REPORT.


4. FACILITIES AND ACCREDITATION
The test sites and measurement facilities used to collect data are located at 47173 Benicia
Street, Fremont, California, USA.

UL Verification Services, Inc. is accredited by NVLAP, Laboratory Code 200065-0. The full
scope of accreditation can be viewed at http://ts.nist.gov/standards/scopes/2000650.htm.


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.          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 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


6. DYNAMIC FREQUENCY SELECTION

   6.1.          OVERVIEW

       6.1.1. LIMITS



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 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T

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 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T

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 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T

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 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


       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 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


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 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. 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 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                               DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


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. Iperf is
utilized to generate WLAN traffic. 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 DFS tests documented in
this report:

                                           TEST EQUIPMENT LIST
            Description                      Manufacturer  Model                Serial Number          Cal Due
   Spectrum Analyzer, PXA, 3Hz to               Keysight  N9030A                 US51350187            06/22/18
               44GHz
 Signal Generator, MXG X-Series RF                 Agilent         N5182B        MY51350337            04/21/18
               Vector


        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                    3.0     Channel Loading and Aggregate Closing Time
         PXA Read                       3.0.0.9        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              24.9 C
 Humidity                 29 %




                                     Page 12 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
    This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


        6.1.5. SETUP OF EUT
RADIATED METHOD EUT TEST SETUP




SUPPORT EQUIPMENT
The following support equipment was utilized for the DFS tests documented in this report:
                              PERIPHERAL SUPPORT EQUIPMENT LIST
      Description          Manufacturer    Model        Serial Number                             FCC ID
   802.11ac Dual Band
                                              AIR-CAP3702E-A-
  Wireless Access Point         Cisco                                  FTX181570A6              LDK102087
                                                    K9
         (Master)
     P.O.E. Injector          Phihong         POE30U-560(G)           PHI170102N2                   DoC
  Notebook PC (Master)        Lenovo          Type 4236-B92         PB-HEXC4 12/05                  DoC
                                                                 11S42T4418Z1ZGWG08R
 AC Adapter (Master PC)        Lenovo             42T4418                                           DoC
                                                                          90M
      Power Dock          Mayfield Robotics      AHR-M8D                Cert Dock 4                 DoC
                              Dongguan
   AC Adapter (Dock)          Dongsong        DYS902-190473W       DYS902-190473-17502              DoC
                            Electronic Co.
   Notebook PC(EUT
                                 Dell              P54G                 G07HW A03            PPD-QCNFA364AH
       Console)
                              Lite-On
  AC Adapter (EUT PC)                           LA4SNM131           CN-0CDF57-LOC00                 DoC
                           Technology Co.
      Mobile Phone              Apple              A1660              F4GTD115HG6Y              BCG-3085A
   Ac Adapter(Phone)            Apple              A1385                 E199967                    DoC


Mobile phone was used to connect the EUT to the AP via “Gizmo Edge” App.




                                     Page 13 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


       6.1.6. DESCRIPTION OF EUT

For FCC 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 15.93 dBm EIRP in the 5250-5350 MHz band and
18.85 dBm EIRP in the 5470-5725 MHz band.

The only antenna assembly utilized with the EUT has a gain of 2.6 dBi in the 5250-5350 MHz
band and 3.3 dBi in the 5470-5725 MHz band.

Two integrated antennas are utilized to meet the diversity and MIMO operational requirements.

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 that meets or exceeds the minimum required loading was generated by
transferring a data stream from the Master Device to the Slave Device using iPerf version 2.0.5
software package.

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

The EUT utilizes the 802.11a/n architecture. Two nominal channel bandwidths are
implemented: 20 MHz and 40 MHz.

The software installed in the EUT is Ralink RT5x7xQA.exe with revisions RT5x7x_V1.0.8.0.

The software installed in the access point is AP3G2-K9W7-M Version 15.3(3)JAB.




                                     Page 14 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


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 Cisco Access Point, FCC ID: LDK102087. The minimum antenna gain
for the Master Device is 6 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.




                                     Page 15 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


   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 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


TRAFFIC



             SLAVE TRAFFIC




                                     Page 17 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


CHANNEL LOADING



             CHANNEL LOADING




The level of traffic loading on the channel by the EUT is 19.324%.




                                     Page 18 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


       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)
                              0.054                                        10


    Aggregate Channel Closing Transmission Time                          Limit
                             (msec)                                     (msec)
                               0.0                                         60




                                     Page 19 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


MOVE TIME



             MOVE TIME




                                     Page 20 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


CHANNEL CLOSING TIME



             CLOSING TIME




                                     Page 21 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


AGGREGATE CHANNEL CLOSING TRANSMISSION TIME

No transmissions are observed during the aggregate monitoring period.



             AGGREGATE CLOSING TIME




                                     Page 22 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


   6.3.          RESULTS FOR 40 MHz BANDWIDTH

       6.3.1. TEST CHANNEL

All tests were performed at a channel center frequency of 5510 MHz.


       6.3.2. RADAR WAVEFORM AND TRAFFIC


RADAR WAVEFORM




             SHORT PULSE RADAR TYPE 0 AT MASTER




                                     Page 23 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


TRAFFIC



             SLAVE TRAFFIC




                                     Page 24 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


CHANNEL LOADING



             CHANNEL LOADING




The level of traffic loading on the channel by the EUT is 29.324%.




                                     Page 25 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


       6.3.3. OVERLAPPING CHANNEL TESTS
RESULTS

These tests are not applicable.


       6.3.4. 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)
                              0.029                                        10


    Aggregate Channel Closing Transmission Time                          Limit
                             (msec)                                     (msec)
                               0.0                                         60




                                     Page 26 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


MOVE TIME



             MOVE TIME




                                     Page 27 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


CHANNEL CLOSING TIME



             CLOSING TIME




                                     Page 28 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


AGGREGATE CHANNEL CLOSING TRANSMISSION TIME

No transmissions are observed during the aggregate monitoring period.



             AGGREGATE CLOSING TIME




                                     Page 29 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.


REPORT NO: 11988903-E4V4                                                              DATE: June 13, 2018
FCC ID: 2AN44-AHR-M8T


       6.3.5. 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 30 of 32
UL VERIFICATION SERVICES INC.                                        FORM NO: CCSUP4701J
47173 BENICIA STREET, FREMONT, CA 94538, USA     TEL: (510) 771-1000    FAX: (510) 661-0888
   This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc.



Document Created: 2018-06-15 11:18:09
Document Modified: 2018-06-15 11:18:09

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