Test Report (DFS)

FCC ID: B94SNPRC1950

Test Report

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FCCID_4469537

                                                               DFS Test Report

                       Report No.: RF190614E02-4 R1

                            FCC ID: B94SNPRC1950

                       Test Model: SNPRC-1950

                 Received Date: June 14, 2019

                         Test Date: July 19, 2019

                     Issued Date: Sep. 23, 2019


                         Applicant: HP Inc.

                          Address: 3390 East Harmony Road, MS 66 Fort Collins, CO 80528


                   Manufacturer: HP Singapore (Private) Limited


                        Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch
                                   Hsin Chu Laboratory
                    Lab Address: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300,
                                 Taiwan R.O.C.
            Test Location: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300,
                           Taiwan R.O.C.
       FCC Registration /
                           723255 / TW2022
      Designation Number:




This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted
only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this
report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product
unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you
provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided,
however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time
shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific
mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report
must not be used by the client to claim product certification, approval, or endorsement by TAF or any government agencies.

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Reference No.: 190614E02


                                                                    Table of Contents
Release Control Record .................................................................................................................................. 3
1          Certificate of Conformity...................................................................................................................... 4
2          EUT Information .................................................................................................................................... 5
     2.1      Operating Frequency Bands and Mode of EUT .................................................................................. 5
     2.2      EUT Software and Firmware Version .................................................................................................. 5
     2.3      Description of Available Antennas to the EUT .................................................................................... 5
     2.4      EUT Maximum Conducted Power ....................................................................................................... 6
     2.5      EUT Maximum EIRP Power ................................................................................................................ 6
     2.6      Transmit Power Control (TPC) ............................................................................................................ 6
     2.7      Statement of Manufacturer.................................................................................................................. 6
3.         U-NII DFS Rule Requirements ............................................................................................................. 7
     3.1      Working Modes and Required Test Items ........................................................................................... 7
     3.2      Test Limits and Radar Signal Parameters........................................................................................... 8
4.         Test & Support Equipment List .......................................................................................................... 11
     4.1      Test Instruments ................................................................................................................................. 11
     4.2      Description of Support Units .............................................................................................................. 11
5.         Test Procedure .................................................................................................................................... 12
     5.1      DFS Measurement System ............................................................................................................... 12
     5.2      Calibration of DFS Detection Threshold Level .................................................................................. 13
     5.3      Deviation from Test Standard ............................................................................................................ 13
     5.4      Conducted Test Setup Configuration ................................................................................................ 14
     5.4.1    Client without Radar Detection Mode ................................................................................................ 14
6.         Test Results ......................................................................................................................................... 15
     6.1      Summary of Test Results .................................................................................................................. 15
     6.2      Test Results ....................................................................................................................................... 16
     6.2.1    Test Mode: Device Operating In Client without Radar Detection Mode ............................................ 16
     6.2.2    Channel Closing Transmission and Channel Move Time.................................................................. 17
     6.2.3    Non-Occupancy Period ..................................................................................................................... 18
     6.2.4    Non-Associated Test.......................................................................................................................... 20
     6.2.5    Non- Co-Channel Test ....................................................................................................................... 20
7.         Information of the Testing Laboratories ........................................................................................... 21
8.         APPENDIX-A ........................................................................................................................................ 22




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                                                Release Control Record


Issue No.                  Description                                                 Date Issued
RF190614E02-4              Original release.                                           Sep. 18, 2019
RF190614E02-4 R1           Modify the applicant and manufacturer information.          Sep. 23, 2019




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1    Certificate of Conformity


             Product: 802.11a/b/g/n/ac (2.4 / 5 GHz) Wi-Fi radio + BT Radio Module

               Brand:




         Test Model: SNPRC-1950

     Sample Status: ENGINEERING SAMPLE

           Applicant: HP Inc.

      Manufacturer: HP Singapore (Private) Limited

           Test Date: July 19, 2019

          Standards: FCC Part 15, Subpart E (Section 15.407)

                          KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02

                          KDB 905462 D03 Clients Without Radar Detection New Rules v01r02



The above equipment has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd.,
Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data
evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts
of the measurements of the sample’s EMC characteristics under the conditions specified in this report.




      Prepared by :                                                      , Date:   Sep. 23, 2019
                                 Phoenix Huang / Specialist




     Approved by :                                                       , Date:   Sep. 23, 2019
                                     May Chen / Manager




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2       EUT Information

2.1         Operating Frequency Bands and Mode of EUT
                                Table 1: Operating Frequency Bands and Mode of EUT

                                                                         Operating Frequency Range
               Operational Mode
                                                           5250~5350MHz                      5470~5725MHz
Client without radar detection and ad hoc
                                                                                                    
                 function

2.2         EUT Software and Firmware Version
                                     Table 2: The EUT Software/Firmware Version

    No.        Product          Model No.                                Software/Firmware Version

            802.11a/b/g/n/ac
            (2.4 / 5 GHz)
    1                        SNPRC-1950            rt18821ds v1930.24.1201.2018_78237_COEX20190403-0000
            Wi-Fi radio + BT
            Radio Module



2.3         Description of Available Antennas to the EUT
                                             Table 3: Antenna List
                                               Internal Antenna
 Antenna                                          Ant. Net Gain Frequency range               Antenna       Connector
                  Brand              Model
   No.                                                 (dBi)         (GHz)                     Type           Type
                                                        3.5         2.4-2.5
        1        HP Inc.           SNPRC-1950                                                  PCB            None
                                                        4.5           5-6
                                            External Antenna
                                                   0.9                          2.4-2.5
        2        Yageo      ANTX300P002B24553                                                  PCB         i-pex(MHF)
                                                   2.3                        5.150-5.875
                                                              2.5               2.4-2.5
        3         Pulse             SZ0595D                                                    PIFA        i-pex(MHF)
                                                               3                4.9-5.9
                                                              0.9               2.4-2.5
        4        Yageo      ANTX200P002B24553                                                  PCB         i-pex(MHF)
                                                              2.3             5.150-5.875
                                                              2.5               2.4-2.5
        5         Pulse             SZ07751                                                    PIFA        i-pex(MHF)
                                                               3                4.9-5.9




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2.4        EUT Maximum Conducted Power
                                   Table 4: The Measured Conducted Output Power
CDD Mode

                                         Max. Power
   Frequency Band
        (MHz)                Output Power          Output Power
                                 (mW)                 (dBm)
      5250~5350                  156.675                21.95
      5470~5725                  164.816                22.17

2.5        EUT Maximum EIRP Power
                                          Table 5: The EIRP Output Power List
CDD Mode

                                     Max. EIRP Power
   Frequency Band
        (MHz)                Output Power          Output Power
                                 (mW)                 (dBm)
      5250~5350                  441.570                26.45
      5470~5725                  464.515                26.67



2.6        Transmit Power Control (TPC)

U-NII devices operating in the 5.25-5.35 GHz band and the 5.47-5.725 GHz band shall employ a TPC
mechanism. The U-NII device is required to have the capability to operate at least 6 dB below the mean EIRP
value of 30 dBm. A TPC mechanism is not required for systems with an e.i.r.p. of less than 500 mW.


  Applicable               EIRP                                     FCC 15.407 (h)(1)
                                            The TPC mechanism is required for system with an EIRP of
                         >500mW
                                                               above 500mW
                                               The TPC mechanism is not required for system with an
       √                 <500mW
                                                             EIRP of less 500mW

2.7        Statement of Manufacturer

Manufacturer statement confirming that information regarding the parameters of the detected Radar
Waveforms is not available to the end user. And the device doesn’t have Ad Hoc mode on DFS frequency
band.




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3. U-NII DFS Rule Requirements
3.1   Working Modes and Required Test Items
The manufacturer shall state whether the UUT is capable of operating as a Master and/or a Client. If the UUT
is capable of operating in more than one operating mode then each operating mode shall be tested separately.
See tables 6 and 7 for the applicability of DFS requirements for each of the operational modes.

                        Table 6: Applicability of DFS Requirements Prior To Use a Channel
                                                                         Operational Mode
                Requirement                                         Client without radar       Client with radar
                                                      Master
                                                                         detection                 detection
           Non-Occupancy Period                                              note                    
          DFS Detection Threshold                                       Not required                  
      Channel Availability Check Time                                   Not required            Not required
       U-NII Detection Bandwidth                        Not required             
Note: Regarding KDB 905462 D03 Client Without Radar Detection New Rules v01r02 section(b)(5/6),
If the client moves with the master, the device is considered compliant if nothing appears in the client
non-occupancy period test. For devices that shut down (rather than moving channels), no beacons
should appear. An analyzer plot that contains a single 30-minute sweep on the original channel.

                        Table 7: Applicability of DFS Requirements during Normal Operation

                                                                         Operational Mode
                Requirement                         Master or Client with               Client without radar
                                                      radar detection                        detection
          DFS Detection Threshold                                                          Not required
    Channel Closing Transmission Time                                                            
             Channel Move Time                                                                   
         U-NII Detection Bandwidth                                                         Not required


  Additional requirements for devices               Master or Client with               Client without radar
    with multiple bandwidth modes                     radar detection                        detection
U-NII Detection Bandwidth and Statistical           All BW modes must be
                                                                                             Not required
          Performance Check                                tested
Channel Move Time and Channel Closing                Test using widest BW             Test using the widest BW
         Transmission Time                              mode available                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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3.2      Test Limits and Radar Signal Parameters
Detection Threshold Values

        Table 8: DFS Detection Thresholds for Master Devices and Client Devices with Radar Detection
                                                                                 Value
             Maximum Transmit Power
                                                                         (See Notes 1, 2, and 3)
                 EIRP ≥ 200 milliwatt                                          -64 dBm
              EIRP < 200 milliwatt and
                                                                            -62 dBm
       power spectral density < 10 dBm/MHz
     EIRP < 200 milliwatt that do not meet the
                                                                            -64 dBm
        power spectral density requirement
Note 1: This is the level at the input of the receiver assuming a 0 dBi receive antenna.
Note 2: Throughout these test procedures an additional 1 dB has been added to the amplitude of the
test transmission waveforms to account for variations in measurement equipment. This will ensure
that the test signal is at or above the detection threshold level to trigger a DFS response.
Note3: EIRP is based on the highest antenna gain. For MIMO devices refer to KDB Publication
662911 D01.

                                      Table 9: DFS Response Requirement Values

                      Parameter                                                  Value
              Non-occupancy period                                 Minimum 30 minutes
          Channel Availability Check Time                               60 seconds
                                                                        10 seconds
                Channel Move Time
                                                                        See Note 1.
                                                          200 milliseconds + an aggregate of 60
         Channel Closing Transmission Time           milliseconds over remaining 10 second period.
                                                                    See Notes 1 and 2.
                                                      Minimum 100% of the U-NII 99% transmission
             U-NII Detection Bandwidth
                                                              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.




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Parameters of DFS Test Signals

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

                                      Table 10: Short Pulse Radar Test Waveforms


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

     0              1                   1428                      18           See Note 1      See Note 1


                                     Test A
                              15 unique PRI values
                                randomly selected
                              from the list of 23 PRI
                                     values                         1    .
                                                                   360
     1              1                                   Roundup                   60%               30
                              15 unique PRI values                 19 · 106
                               randomly selected                   PRIμsec
                               within the range of
                              518~3066μsec with
                               a minimum of 1μ
                               sec,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.




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                                           Table 11: Long Pulse Radar Test Waveform
                                                                                      Minimum
               Pulse          Chirp                     Number of                                        Minimum
  Radar                                       PRI                  Number of        Percentage of
               Width          Width                     Pulses Per                                       Number of
  Type                                       (µsec)                 Bursts           Successful
               (µsec)         (MHz)                       Burst                                            Trials
                                                                                      Detection
     5        50-100          5-20         1000-2000       1-3             8-20         80%                   30
Three subsets of trials will be performed with a minimum of ten trials per subset. The subset of trials differ in
where the Long Pulse Type 5 Signal is tuned in frequency.

a) the Channel center frequency
b) tuned frequencies such that 90% of the Long Pulse Type 5 frequency modulation is within the low edge of
the UUT Occupied Bandwidth
c) tuned frequencies such that 90% of the Long Pulse Type 5 frequency modulation is within the high edge of
the UUT Occupied Bandwidth

It include 10 trails for every subset, the formula as below,

For subset case 1: the center frequency of the signal generator will remain fixed at the center of the UUT
Channel.

For subset case 2: to retain 90% frequency overlap between the radar signal and the UUT Occupied
Bandwidth, the center frequency of the signal generator will vary for each of the ten trials in subset case 2.
The center frequency of the signal generator for each trial is calculated by:

   +(0.4∗                 [           ])

For subset case 3: to retain 90% frequency overlap between the radar signal and the UUT Occupied
Bandwidth, the center frequency of the signal generator will vary for each of the ten trials in subset case 3.
The center frequency of the signal generator for each trial is calculated by:

   −(0.4∗                 [           ])



                                     Table 12: Frequency Hopping Radar Test Waveform

                                                                          Hopping     Minimum
                 Pulse                                  Hopping                                          Minimum
  Radar                           PRI         Pulses                     Sequence   Percentage of
                 Width                                   Rate                                            Number of
  Type                          (µsec)        per Hop                      Length    Successful
                 (µsec)                                  (kHz)                                             Trials
                                                                           (msec)     Detection

     6              1            333             9        0.333            300          70%                   30




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4. Test & Support Equipment List

4.1      Test Instruments
                                              Table 13: Test Instruments List

DESCRIPTION &                                                            CALIBRATED       CALIBRATED
                                      MODEL NO.         SERIAL NO.
MANUFACTURER                                                             DATE             UNTIL
Spectrum Analyzer R&S                FSV40              100964           June 04, 2019    June 03, 2020
Vector Signal Generator Agilent N5182B                  MY53051263       Sep. 07, 2018    Sep. 06, 2019
DFS Control Box                 BV-DFS-CB               001              Nov. 30, 2018    Nov. 29, 2019


4.2      Description of Support Units
                                            Table 14: Support Unit Information

 No.                Product                        Brand             Model No.             FCC ID
         Wireless-AX6000 Dual Band
   1                                               ASUS              RT-AX88U         MSQ-RTAXHP00
                Gigabit Router
NOTE: This device was functioned as a             Master       Slave device during the DFS test.

                                        Table 15: Software/Firmware Information

 No.              Product                          Model No.                Software/Firmware Version

          Wireless-AX6000 Dual
  1.                                               RT-AX88U                          3.0.0.4.384
           Band Gigabit Router




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5. Test Procedure

5.1      DFS Measurement System

A complete DFS Measurement System consists of Radar signal generate system to generating the radar
waveforms in Table 10, 11 and 12. The traffic monitoring system is specified to the type of unit under test
(UUT).

Conducted Setup Configuration of DFS Measurement System

                        Control PC                                       Radar Signal generate system




                        Spectrum
                        Analyzer                                                  Attenuator




                          C/S




         Attenuator                            Attenuator                            C/S


                                     Traffic Monitoring Subsystem


        Support Unit                                                                Master /
                                                                                   Client with
                                                                                  DFS function




Channel Loading
System testing will be performed with channel-loading using means appropriate to the data types that are
used by the unlicensed device. The following requirements apply:

      The data file must be of a type that is typical for the device (i.e., MPEG-2,
a)    MPEG-4, WAV, MP3, MP4, AVI, etc.) and must generally be transmitting in a
      streaming mode.
      Software to ping the client is permitted to simulate data transfer but must have
b)    random ping intervals.
      Timing plots are required with calculations demonstrating a minimum channel
c)    loading of approximately 17% or greater.                                                   
      Unicast or Multicast protocols are preferable but other protocols may be used.
d)    The appropriate protocol used must be described in the test procedures.




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5.2      Calibration of DFS Detection Threshold Level

The measured channel is chosen from the operating channels of the UUT within the 5250-5350MHz or
5470-5725MHz and using the widest bandwidth mode available for the link. The radar signal was the same as
transmitted channels, and injected into the antenna port of AP (master) or Client Device with Radar Detection,
measured the channel closing transmission time and channel move time. The Master antenna gain is 0dBi
and the calibrated conducted detection threshold level is set to -64 dBm.



Conducted Setup Configuration of Calibration of DFS Detection Threshold Level


                           Control PC




                           Spectrum                                        Radar Signal generate system
                           Analyzer




                                      50Ω Load (Terminator)

                                                                                Attenuator

                                        C/S



   50Ω Load          Attenuator                               Attenuator           C/S

 (Terminator)




5.3      Deviation from Test Standard
No deviation.




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5.4       Conducted Test Setup Configuration

5.4.1     Client without Radar Detection Mode




                       Control PC




                       Spectrum                                          Radar Signal generate system
                        Analyzer




                                                                                  Attenuator

                          C/S




                                                                                     C/S         Master
         Attenuator                            Attenuator




        Client (UUT)        Notebook                                                            Notebook




The UUT is a U-NII Device operating in Client mode without radar detection. The radar test signals are
injected into the Master Device.




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6. Test Results

6.1      Summary of Test Results

       Clause                        Test Parameter                        Remarks        Pass/Fail
       15.407                   DFS Detection Threshold                  Not Applicable      NA
       15.407               Channel Availability Check Time              Not Applicable      NA
       15.407                      Channel Move Time                      Applicable        Pass
       15.407             Channel Closing Transmission Time               Applicable        Pass
       15.407                    Non- Occupancy Period                    Applicable        Pass
       15.407                  U-NII Detection Bandwidth                 Not Applicable      NA
       15.407                      Non-associated test                    Applicable        Pass
       15.407                     Non-Co-Channel test                     Applicable        Pass




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6.2      Test Results

6.2.1    Test Mode: Device Operating In Client without Radar Detection Mode

The radar test signals are injected into the Master Device.
This test was investigated for different bandwidth (20/40/80MHz).
The following plots was done on 80MHz as a representative

DFS Detection Threshold

 The Required detection threshold is -63dBm (= -64 +1).
 The conducted radar burst level is set lower than -63dBm.




                                                                              Radar signal




                                                                                   Noise Floor




                                                         Radar Signal 0




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6.2.2    Channel Closing Transmission and Channel Move Time

Radar Signal 0
802.11ac (VHT80)




                       Radar Signal




                                                                            Noise Floor




NOTE: T1 denotes the start of Channel Move Time upon the end of the last Radar burst. T2 denotes the data
transmission time of 200ms from T1. T3 denotes the end of Channel Move Time. T4 denotes the 10 second
from T1 to observe the aggregate duration of transmissions.




                                                                             Noise Floor




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




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6.2.3    Non-Occupancy Period

ASSOCIATED TEST

     1) Test results demonstrating an associated client link is established with the master on a test
     frequency.




     EUT (Client ) links with master on 5530MHz

     2) The client and DFS-certified master device are associated, and system testing will be performed
     with channel-loading for a non-occupancy period test.




     Client performed with channel-loading via master.




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     3). The device transmits one type of radar as specified in the DFS Order.




     Radar 0 is used to test during DFS testing.


     4) The test frequency has been monitored to ensure no transmission of any type has occurred for 30
     minutes;
     Note: If the client moves with the master, the device is considered compliant if nothing appears in the
     client non-occupancy period test. For devices that shut down (rather than moving channels), no
     beacons should appear;
     5) An analyzer plot that contains a single 30-minute sweep on the original test frequency.




                      Injected into Radar




                      Traffic Signal




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6.2.4    Non-Associated Test

Master was off.
During the 30 minutes observation time, The UUT did not make any transmissions in the DFS band after UUT
power up.




                                                                                 Noise Floor




6.2.5    Non- Co-Channel Test

The UUT was investigated after radar was detected the channel and made sure no co-channel operation with
radars.




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7. Information of the Testing Laboratories


 We, Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, were founded in 1988 to
 provide our best service in EMC, Radio, Telecom and Safety consultation. Our laboratories are accredited
 and approved according to ISO/IEC 17025.

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Report No.: RF190614E02-4 R1                          Page No. 21 / 22                 Report Format Version: 6.1.2
Cancels and replaces the report No.: RF190614E02-4 dated Sep. 18, 2019
Reference No.: 190614E02


8. APPENDIX-A

NON BEACON ON DFS BAND

     1) Test results demonstrating no any beacon on DFS band after power up.
     2) Observation time is 10min after power up.




     Client (UUT) no transmit on 802.11ac (VHT20) Client (UUT) no transmit on 802.11ac (VHT40)
     mode                                         mode




     Client (UUT) no transmit on 802.11ac (VHT80) mode



--- END ---




Report No.: RF190614E02-4 R1                          Page No. 22 / 22         Report Format Version: 6.1.2
Cancels and replaces the report No.: RF190614E02-4 dated Sep. 18, 2019
Reference No.: 190614E02



Document Created: 2019-10-03 08:53:59
Document Modified: 2019-10-03 08:53:59

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