Test Report_DFS

FCC ID: R9C-CPH1941

Test Report

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FCCID_4496220

3UL Report No.: BTL—FCCP—6—1909C 106 FCC DFS Test Report FCC ID: R9C—CPH1941 This report concerns: Original Grant Project No. 1909C106 Equipment Mobile Phone Brand Name OPPO Test Model CPH1941 Series Model N/A Applicant GuangDong Oppo Mobile Telecommunications Corp., Ltd. Address NO. 18 HaiBin Road, WuSha village, Chang An Town, DongGuan City,Guangdong,China. Manufacturer GuangDong Oppo Mobile Telecommunications Corp., Ltd. Address NO. 18 HaiBin Road, WuSha village, Chang An Town, DongGuan City,Guangdong,China. Factory GuangDong Oppo Mobile Telecommunications Corp., Ltd. Address NO. 18 HaiBin Road, WuSha village, Chang An Town, DongGuan City,Guangdong,China. Date of Receipt Sep. 19, 2019 Date of Test Sep. 19, 2019 ~ Oct. 16, 2019 Issued Date Oct. 24, 2019 Report Version ROO Test Sample Engineering Sample No.: DG2019091939 Standard(s) FCC Part 15, Subpart E (Section 15.407) / FCC 06—96 FCC KDB 789033 DO2 General U—NIl Test Procedures New Rules v02r01 FCC KDB 905462 DO2 UNII DFS Compliance Procedures New Rules vO2 FCC KDB 905462 DO3 UNII Clients Without Radar Detection New Rules v01r02 The above equipment has been tested and found compliance with the requirement of the e relative standards by BTL Inc. $ 5 [Prepared by : Paul Li T2 eez z"/ xn‘ oa*, "yi>x [Acer ED) S‘Q&/o\x\ ].M SifNy® ACCREDITED Approved by : Steven Lu Certificate #5123.02 Add: No.3, Jinshagang 1st Road, Shixia, Dalang Town,Dongguan, Guangdong, China. Tel: +86—769—8318—3000 Web: www.newbtl.com Page 1 of 20

Report No.: BTL-FCCP-6-1909C106 Declaration BTL represents to the client that testing is done in accordance with standard procedures as applicable and that test instruments used has been calibrated with standards traceable to international standard(s) and/or national standard(s). BTL's reports apply only to the specific samples tested under conditions. It is manufacture’s responsibility to ensure that additional production units of this model are manufactured with the identical electrical and mechanical components. BTL shall have no liability for any declarations, inferences or generalizations drawn by the client or others from BTL issued reports. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, A2LA, or any agency of the U.S. Government. This report is the confidential property of the client. As a mutual protection to the clients, the public and ourselves, the test report shall not be reproduced, except in full, without our written approval. BTL’s laboratory quality assurance procedures are in compliance with the ISO/IEC 17025 requirements, and accredited by the conformity assessment authorities listed in this test report. BTL is not responsible for the sampling stage, so the results only apply to the sample as received. The information, data and test plan are provided by manufacturer which may affect the validity of results, so it is manufacturer’s responsibility to ensure that the apparatus meets the essential requirements of applied standards and in all the possible configurations as representative of its intended use. Limitation For the use of the authority's logo is limited unless the Test Standard(s)/Scope(s)/Item(s) mentioned in this test report is (are) included in the conformity assessment authorities acceptance respective. Please note that the measurement uncertainty is provided for informational purpose only and are not use in determining the Pass/Fail results. Page 2 of 20

Report No.: BTL-FCCP-6-1909C106 Table of Contents page REPORT ISSUED HISTORY 4 1 . EUT INFORMATION 5 1.1 EUT SPECIFICATION TABLE 5 1.2 CONDUCTED OUTPUT POWER AND EIRP 7 2 . U-NII DFS RULE REQUIREMENTS 8 2.1 WORKING MODES AND REQUIRED TEST ITEMS 8 2.2 TEST LIMITS AND RADAR SIGNAL PARAMETERS 9 3 . TEST INSTRUMENTS 11 4 . DYNAMIC FREQUENCY SELECTION (DFS) TEST 12 4.1 DFS MEASUREMENT SYSTEM 12 4.2 CALIBRATION OF DFS DETECTION THRESHOLD LEVEL 15 4.3 DEVIATION FROM TEST STANDARD 15 5 . TEST RESULTS 16 5.1 SUMMARY OF TEST RESULT 16 5.2 TEST MODE: DEVICE OPERATING IN MASTER MODE 16 5.3 DFS DETECTION THRESHOLD 17 5.4 CHANNEL CLOSING TRANSMISSION AND CHANNEL MOVE TIME WLAN TRAFFIC 18 5.5 NON-OCCUPANCY PERIOD 20 Page 3 of 20

Report No.: BTL-FCCP-6-1909C106 REPORT ISSUED HISTORY Report Version Description Issued Date R00 Original Issue. Oct. 24, 2019 Page 4 of 20

Report No.: BTL-FCCP-6-1909C106 1. EUT INFORMATION 1.1 EUT SPECIFICATION TABLE Table 1: Specification of EUT Equipment Mobile Phone Brand Name OPPO Test Model CPH1941 Series Model N/A Model Difference(s) N/A Hardware Version 11 Software Version ColorOS V6.0.1 Firmware Version TBD 1. DC Voltage supplied from AC/DC adapter. 1# Model: OP52KAUH 2# Model: OP52JAUH 3# Model: OP52YAUH 2. Supplied from Li-ion Polymer battery. Power Source 1# Factory / Model: NVT / BLP727 (NA-P727-92) 2# Factory / Model: Desay / BLP727 (DA-P727-923) 3# Factory / Model: Sunwoda / BLP727 (XA-P727-922) 4# Factory / Model: Desay / BLP727 (DD-P727-918) 5# Factory / Model: Desay / BLP727 (DA-P727-931) 3. Supplied from USB port. 1. I/P:100-240V~ 50/60Hz 0.4A O/P:5V − − − 2A Power Rating 2. 3.87Vdc, 5000mAh/19.35Wh 3. DC 5V Operational Mode Client UNII-2A: 5250 MHz ~ 5350 MHz Operation Frequency Bands UNII-2C: 5470 MHz ~ 5725 MHz Modulation Type OFDM Note: This device was functioned as a Master Client device without radar detection Client device with radar detection Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications or the user's manual. Page 5 of 20

Report No.: BTL-FCCP-6-1909C106 2. Channel List: IEEE 802.11a IEEE 802.11n (HT40) IEEE 802.11n (HT20) IEEE 802.11ac (VHT80) IEEE 802.11ac (VHT40) IEEE 802.11ac (VHT20) UNII-2A UNII-2A UNII-2A Frequency Frequency Frequency Channel Channel Channel (MHz) (MHz) (MHz) 52 5260 54 5270 58 5290 56 5280 62 5310 60 5300 64 5320 IEEE 802.11a IEEE 802.11n (HT40) IEEE 802.11n (HT20) IEEE 802.11ac (VHT80) IEEE 802.11ac (VHT40) IEEE 802.11ac (VHT20) UNII-2C UNII-2C UNII-2C Frequency Frequency Frequency Channel Channel Channel (MHz) (MHz) (MHz) 100 5500 102 5510 106 5530 104 5520 110 5550 122 5610 108 5540 118 5590 112 5560 126 5630 116 5580 134 5670 120 5600 124 5620 128 5640 132 5660 136 5680 140 5700 3. Antenna Specification: Ant. Brand Model Name Antenna Type Connector Gain (dBi) 1 N/A N/A Internal N/A -3 Page 6 of 20

Report No.: BTL-FCCP-6-1909C106 1.2 CONDUCTED OUTPUT POWER AND EIRP Table 2: The Maximum Output Power and e.i.r.p. List TX A Mode Frequency Band Max. Output Power Max. e.i.r.p. Max. e.i.r.p. Antenna Gain (MHz) (dBm) (dBm) (mW) 5250~5350 17.98 -3 14.98 31.477 5470~5725 14.42 -3 11.42 13.868 TX N (HT40) Mode Frequency Band Max. Output Power Max. e.i.r.p. Max. e.i.r.p. Antenna Gain (MHz) (dBm) (dBm) (mW) 5250~5350 16.82 -3 13.82 24.099 5470~5725 13.95 -3 10.95 12.445 TX AC (VHT80) Mode Frequency Band Max. Output Power Max. e.i.r.p. Max. e.i.r.p. Antenna Gain (MHz) (dBm) (dBm) (mW) 5250~5350 16.76 -3 13.76 23.768 5470~5725 14.19 -3 11.19 13.152 Page 7 of 20

3UL Report No.: BTL—FCCP—6—1909C 106 2. U—NIl DFS RULE REQUIREMENTS 2.1 WORKING MODES AND REQUIRED TEST ITEMS The manufacturer shall state whether the UUT is capable of operating as a Master and/or a Client. If the UUT is capable of operating in more than one operating mode then each operating mode shall be tested separately. See tables 3 and 4 for the applicability of DFS requirements for each of the operational modes. Table 3: Applicability of DFS requirements prior to use a channel Operational Mode Requirement — — — — Master Client without Client with radar radar detection detection Non—Occupancy Period v" v" v" DFS Detection Threshold v" Not required v" Channel Availability Check Time v" Not required Not required Uniform Spreading ¥" Not required Not required U—NIl Detection Bandwidth v" Not required v" Table 4: Applicability of DFS requirements during normal operation. Operational Mode Requirement — — — — Master Client without Client with radar radar detection detection DFS Detection Threshold ¥" Not required v" Channel Closing Transmission w P P Time Channel Move Time v" v" v" U—NIl Detection Bandwidth v" Not required v" Page 8 of 20

Report No.: BTL-FCCP-6-1909C106 2.2 TEST LIMITS AND RADAR SIGNAL PARAMETERS DETECTION THRESHOLD VALUES Table 5: DFS Detection Thresholds for Master Devices and Client Devices With Radar Detection. Value Maximum Transmit Power (See Notes 1 and 2) e.i.r.p. ≥ 200 milliwatt -64 dBm e.i.r.p. < 200 milliwatt and -62 dBm power spectral density < 10 dBm/MHz e.i.r.p. < 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 6: DFS Response Requirement Values Parameter Value Non-occupancy period Minimum 30 minutes Channel Availability Check Time 60 seconds Channel Move Time 10 seconds See Note 1. 200 milliseconds + an aggregate of 60 Channel Closing Transmission Time milliseconds over remaining 10 second period. See Notes 1 and 2. Minimum 100% of the UNII U-NII Detection Bandwidth 99% transmission power bandwidth. See Note 3. Note 1: Channel Move Time and the Channel Closing Transmission Time should be performed with Radar Type 0. The measurement timing begins at the end of the Radar Type 0 burst. Note 2: The Channel Closing Transmission Time is comprised of 200 milliseconds starting at the beginning of the Channel Move Time plus any additional intermittent control signals required to facilitate a Channel move (an aggregate of 60 milliseconds) during the remainder of the 10 second period. The aggregate duration of control signals will not count quiet periods in between transmissions. Note 3: During the U-NII Detection Bandwidth detection test, radar type 0 should be used. For each frequency step the minimum percentage of detection is 90 percent. Measurements are performed with no data traffic. Page 9 of 20

Report No.: BTL-FCCP-6-1909C106 PARAMETERS OF DFS TEST SIGNALS Step intervals of 0.1 microsecond for Pulse Width, 1 microsecond for PRI, 1 MHz for chirp width and 1 for the number of pulses will be utilized for the random determination of specific test waveforms. Table 7: Short Pulse Radar Test Waveforms. A minimum of 30 unique waveforms are required for each of the Short Pulse Radar Types 2 through 4. If more than 30 waveforms are used for Short Pulse Radar Types 2 through 4, then each additional waveform must also be unique and not repeated from the previous waveforms. If more than 30 waveforms are used for Short Pulse Radar Type 1, then each additional waveform is generated with Test B and must also be unique and not repeated from the previous waveforms in Tests A or B. Page 10 of 20

Report No.: BTL-FCCP-6-1909C106 Table 8: Long Pulse Radar Test Waveform Minimum Pulse Chirp Number Number Minimum Radar PRI Percentage of Width Width of Pulses of Number Type (µsec) Successful (µsec) (MHz) per Burst Bursts of Trials Detection 5 50-100 5-20 1000-2000 1-3 8-20 80% 30 The parameters for this waveform are randomly chosen（The center frequency for each of the 30 trials of the Bin 5 radar shall be randomly selected within 80% of the Occupied Bandwidth.） Thirty unique waveforms are required for the Long Pulse Radar Type waveforms. If more than 30 waveforms are used for the Long Pulse Radar Type waveforms, then each additional waveform must also be unique and not repeated from the previous waveforms. Table 9: Frequency Hopping Radar Test Waveform Minimum Pulse Chirp Number Minimum Radar PRI Number Percentage of Width Width of Pulses Number Type (µsec) of Bursts Successful (µsec) (MHz) per Burst of Trials Detection 6 1 333 9 0.333 300 70% 30 3. TEST INSTRUMENTS Table 10: Test Instruments List. CALIBRATION DESCRIPTION MANUFACTURER MODEL NO. SERIAL NO UNTIL EXA Spectrum Agilent N9010A MY50520044 Mar. 10, 2020 Analyzer Signal Agilent E4438C MY49071316 Mar. 10, 2020 Generator POWER Mini-Circuits ZFRSC-123-S+ 331000910-1 Mar. 10, 2020 SPLITTER POWER Mini-Circuits ZN4PD1-63-S+ SF9335D1045-1 Mar. 10, 2020 SPLITTER Attenuator WOKEN 6SM3502 VAS1214NL Feb. 12, 2020 Wi-Fi Router tp-link Archer AX6000 N/A N/A Note: (1) Calibration interval of instruments listed above is one year. (2) Wi-Fi Router’s FCC ID: TE7AX6000 Page 11 of 20

Report No.: BTL-FCCP-6-1909C106 4. DYNAMIC FREQUENCY SELECTION (DFS) TEST 4.1 DFS MEASUREMENT SYSTEM Test Precedure 1. Master device and client device are set up by conduction method as the following configuration. 2. The client device is connected to notebook and to access a IP address on wireless connection with the master device. 3. Then the master device is connected to another notebook to access a IP address. 4. Finally, let the two IP addresses run traffic with each other through the Run flow software “Lan test” to reach 17% channel loading as below Setup Page 12 of 20

Report No.: BTL-FCCP-6-1909C106 Channel Loading TX AC (VHT80) Mode Frequency Marker Delta On Time Total Time Duty cycle Limit Number (MHz) (ms) (ms) (ms) (%) (%) 5530 0.1824 95 17.328 101.3 17.11 17.00 Page 13 of 20

Report No.: BTL-FCCP-6-1909C106 The hopping type 6 pulse parameters are fixed while the hopping sequence is based on the August 2005 NTIA Hopping Frequency List. The initial starting point randomized at run-time and each subsequent starting point is incremented by 475. Each frequency in the 100-length segment is compared to the boundaries of the EUT Detection Bandwidth and the software creates a hopping burst pattern in accordance with Section 7.4.1.3 Method #2 Simulated Freqeuncy Hopping Radar Waveform Generating Subsystem of FCC 06-96. The frequency of the signal generator is incremented in 1 MHz steps from FL to FH for each successive trial. This incremental sequence is repeated as required to generate a minimum of 30 total trials and to maintain a uniform frequency distribution over the entire Detection Bandwidth. The signal monitoring equipment consists of a spectrum analyzer set to display 8001 bins on the horizontal axis. The time-domain resolution is 2 msec / bin with a 16 second sweep time, meeting the 10 second short pulse reporting criteria. The aggregate ON time is calculated by multiplying the number of bins above a threshold during a particular observation period by the dwell time per bin, with the analyzer set to peak detection and max hold. Should multiple RF ports be utilized for the Master and/or Slave devices (for example, for diversity or MIMO implementations), additional combiner/dividers are inserted between the Master Combiner/Divider and the pad connected to the Master Device (and/or between the Slave Combiner/Divider and the pad connected to the Slave Device). Additional pads are utilized such that there is one pad at each RF port on each EUT. Page 14 of 20

PV 3 L L Report No.: BTL—FCCP—6—1909C 106 4.2 CALIBRATION OF DFS DETECTION THRESHOLD LEVEL A 50 ohm load is connected in place of the spectrum analyzer, and the spectrum analyzer is connected in place of the master device and the signal generator is set to CW mode. The amplitude of the signal generator is adjusted to yield a level of —82 dBm as measured on the spectrum analyzer. Without changing any of the instrument settings, the spectrum analyer is reconnected to the Common port of the Spectrum Analyzer Combiner/Divider. Measure the amplitude and calculate the difference from —82 dBm. Adjust the Reference Level Offset of the spectrum analyzer to this difference. The spectrum analyzer displays the level of the signal generator as received at the antenna ports of the Master Device. The interference detection threshold may be varied from the calibrated value of —82 dBm and the spectrum analyzer will still indicate the level as received by the Master Device. Set the signal generator to produce a radar waveform, trigger a burst manually and measure the level on the spectrum analyzer. Readjust the amplitude of the signal generator as required so that the peak level of the waveform is at a displayed level equal to the required or desired interference detection threshold. Separate signal generator amplitude settings are determined as required for each radar type. f j ‘ Antenna Port RF Connections to Test Instrument Setup ‘ Master Device Controller and Server, Host Computer, with MPEG file with MPEG Player and Codec 4.3 DEVIATION FROM TEST STANDARD No deviation. Page 15 of 20

Report No.: BTL-FCCP-6-1909C106 5. TEST RESULTS 5.1 SUMMARY OF TEST RESULT Clause Test Parameter Test Mode and Channel Remarks Pass/Fail 15.407 DFS Detection Threshold - No Applicable N/A Channel Availability Check 15.407 - Not Applicable N/A Time TX AC (VHT80) Mode 15.407 Channel Move Time 5530 MHz Applicable Pass Channel Closing TX AC (VHT80) Mode 15.407 5530 MHz Applicable Pass Transmission Time TX AC (VHT80) Mode 15.407 Non- Occupancy Period 5530 MHz Applicable Pass 15.407 Uniform Spreading - Not Applicable N/A 15.407 U-NII Detection Bandwidth - Not Applicable N/A 5.2 TEST MODE: DEVICE OPERATING IN MASTER MODE The EUT is slave equipment, it need a master device when testing. Master with injection at the Master. (Radar Test Waveforms are injected into the Master) Page 16 of 20

Report No.: BTL-FCCP-6-1909C106 5.3 DFS DETECTION THRESHOLD Calibration: The EUT is slave equipment and it with the lowest gain is -3 dBi. For a detection threshold level of -62dBm and the master antenna gain is 2.28 dBi, required detection threshold is -59.72 dBm (= -62+2.28). Note: Maximum Transmit Power is more than 200 milliwatt in this report, so detection threshold level is -62dBm. Radar Signal 0 Page 17 of 20

Report No.: BTL-FCCP-6-1909C106 5.4 CHANNEL CLOSING TRANSMISSION AND CHANNEL MOVE TIME WLAN TRAFFIC TX AC (VHT80) Mode Radar signal 0 Note: T0 denotes the Radar Injection Start. T1 denotes the start of Channel Move Time upon the end of the last Radar burst. T2 denotes the data transmission time of 200ms from T1. T3 denotes the end of Channel Move Time. Note: An expanded plot for the device vacates the channel in the required 500ms Page 18 of 20

Report No.: BTL-FCCP-6-1909C106 TX AC (VHT80) Mode Item Measured Value(s) Limit(s) Channel Move Time 0.2374941 10 200 milliseconds + an aggregate of Channel Close Time 0.0 60 milliseconds over remaining 10 second period Page 19 of 20

Report No.: BTL-FCCP-6-1909C106 5.5 NON-OCCUPANCY PERIOD During the 30 minutes observation time, UUT did not make any transmissions on a channel after a radar signal was detected on that channel by either the Channel Availability Check or the In-Service Monitoring. TX AC (VHT80) Mode 5530 Non-Occupancy period End of Test Report Page 20 of 20


Document Created: 2019-11-04 13:33:28
Document Modified: 2019-11-04 13:33:28
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