SRS-XB402M_FCC-DFS Test Report

FCC ID: AK8SRSXB402

Test Report

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FCCID_4206037

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 FCC Dynamic Frequency Selection Test Report for Sony Corporation Wireless Speaker SRS-XB402M; SRS-XB402G FCC ID: AK8SRSXB402 Prepared for : Sony Corporation 1-7-1 Konan Minato-ku Tokyo, 108-0075 Japan Prepared By : Audix Technology (Shenzhen) Co., Ltd. No. 6, Kefeng Road, Science & Technology Park, Nanshan District , Shenzhen, Guangdong, China Tel: (0755) 26639496 Report Number : ACS-F19024 Date of Test : Jan.23, 2019 Date of Report : Mar.05, 2019 Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 1 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION ...............................................................................................................3 1.SUMMARY OF MEASUREMENTS AND RESULTS ..........................................................................4 2.GENERAL INFORMATION ...................................................................................................................5 2.1.Description of Device (EUT) ............................................................................................................5 2.2.Support Equipment ............................................................................................................................7 2.3.Test Channel......................................................................................................................................7 2.4.Description of Test Facility ...............................................................................................................8 2.5.Measurement Uncertainty .................................................................................................................8 3.TEST EQUIPMENT .................................................................................................................................9 4.WORKING MODES AND REQUIREMENT TEST ITEM ..................................................................10 4.1.Applicability of DFS Requirements Prior To Use A Channel ........................................................10 4.2.Applicability of DFS Requirements During Normal Operation......................................................10 5.DFS DETECTION THRESHOLOS AND RADAR TEST WAVEFORMS .........................................11 5.1.Interference Threshold Value, Master or Client Incorporating In-Service Monitoring ..................11 5.2.Radar Test Waveform Minimum Step ............................................................................................11 5.3.Short Pulse Radar Test Waveforms.................................................................................................12 5.4.Long Pulse Radar Test Waveforms .................................................................................................13 5.5.Frequency Hopping Pulse Radar Test Waveforms .........................................................................15 5.6.Conducted Calibration Setup ..........................................................................................................17 5.7.Radar Waveform Calibration Procedure .........................................................................................17 5.8.Calibration Deviation ......................................................................................................................17 5.9.Radar Waveform Calibration Result ...............................................................................................18 6.TEST SETUP AND TEST RESULT ......................................................................................................19 6.1.Test Setup ........................................................................................................................................19 6.2.Channel Move Time, Channel Closing Time, Non-Occupancy Period Measurement....................21 7.PHOTOGRAPHS OF MEASUREMENT ..............................................................................................25 7.1.Photographs of Slave Mode ............................................................................................................25 8.PHOTOS OF THE EUT .........................................................................................................................26 Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 2 of 31

® A U D IX AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB4O2 TEST REPORT VERIFICATION Applicant : Sony Corporation Manufacturer * Sony Corporation Product * Wireless Speaker (A) Model No. : SRS—XB402M; SRS—XB402G (B) Test Voltage : AC 120V/60Hz Measurement Standards Used: FCC RULES AND REGULATIONS PART 15 Subpart E (FCC CFR 47 Part 15E, §15.407) The device described above was tested by Audix Technology (Shenzhen) Co., Ltd. to determine the maximum emission levels emanating from the device. The maximum emission levels were compared to the FCC Part 15 subpart E limits. The measurement results are contained in this test report and Audix Technology (Shenzhen) Co., Ltd. is assumed full responsibility for the accuracy and completeness of these measurements. Also, this report shows that the EUT to be technically compliant with the requirements of FCC Part 15E standards. This report applies to above tested sample only. This report shall not be reproduced in part without written approval of Audix Technology (Shenzhen) Co., Ltd. Date of Test : Jan.23, 2019 Report of date: Mar.05, 2019 Prepared by : /h27La A Reviewed by : é>/ Monica Liu / Assistant Sunny Lu / Deputy Manager 0 #4#4 (K») 4MA# AUD'X Audix Technology (Shenzhen) Co., Ltd. EMC # M # & 4 A & Stamp only for EMC Dept. Report Approved & Authorized Signer : Audix Technology (Shenzhen) Co., Iid.. Report No. ACS—F19024 Page 3 of31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 1. SUMMARY OF MEASUREMENTS AND RESULTS The EUT has been tested according to the applicable standards as referenced below. Description of Test Item Results Channel Availability Check Time N/A Channel Move Time PASS Non-Occupancy Period N/A Channel Closing Transmission Time PASS U-NII Detection Bandwidth N/A N/A is an abbreviation for Not Applicable, sine the product is client without radar detection function Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 4 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 2. GENERAL INFORMATION 2.1. Description of Device (EUT) Product : Wireless Speaker Model No. : SRS-XB402M; SRS-XB402G Only product application software difference between two models. Test Model : SRS-XB402M Radio : IEEE802.11a/b/g/n/ac; Bluetooth V3.0+EDR; Bluetooth V4.2 Operation : IEEE 802.11a: Frequency 5180MHz—5240MHz; 5260MHz—5320MHz 5500MHz—5700MHz; 5745MHz—5825MHz IEEE 802.11ac VHT20: 5180MHz—5240MHz; 5260MHz—5320MHz 5500MHz—5700MHz; 5745MHz—5825MHz IEEE 802.11ac VHT40: 5190MHz—5230MHz; 5270MHz—5310MHz 5510MHz—5670MHz; 5755MHz—5795MHz IEEE 802.11ac VHT80: 5210MHz, 5290MHz; 5530MHz—5610MHz; 5775MHz IEEE 802.11b: 2412MHz—2462MHz IEEE 802.11g: 2412MHz—2462MHz IEEE802.11n HT20: 2412MHz—2462MHz; 5180MHz—5240MHz; 5260MHz—5320MHz 5500MHz—5700MHz; 5745MHz—5825MHz IEEE802.11n HT40: 2422MHz—2452MHz; 5190MHz—5230MHz; 5270MHz—5310MHz 5510MHz—5670MHz; 5755MHz—5795MHz Bluetooth : 2402-2480MHz Modulation : IEEE 802.11b: DSSS(CCK,DQPSK,DBPSK) Technology IEEE 802.11a/g: OFDM(64QAM, 16QAM, QPSK, BPSK) IEEE 802.11ac VHT20, VHT40, VHT80: OFDM(16QAM, 64QAM, 256QAM, QPSK, BPSK) IEEE 802.11n HT20, HT40: OFDM (64QAM, 16QAM,QPSK,BPSK) Bluetooth V3.0+EDR: GFSK, π/4DQPSK,8-DPSK Bluetooth V4.2:GFSK Antenna : FPC Antenna, Assembly Gain Bluetooth Gain: 3.01dBi WIFI 2.4GHz Gain: 3.18dBi. WIFI 5GHz Gain: Band 1: 4.04dBi. Band 2: 4.66dBi. Band 3: 4.82dBi. Band 4: 4.91dBi. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 5 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 Applicant : Sony Corporation 1-7-1 Konan Minato-ku Tokyo, 108-0075 Japan Manufacturer : Sony Corporation 1-7-1 Konan Minato-ku Tokyo, 108-0075 Japan Power Adaptor : Manufacturer: Sony, M/N: AC-E0530 Input: 100-240V~50/60Hz, 0.5A Output: DC 5V, 3.0A DC Cable: Unshielded, Undetachable, 1.6m Date of Test : Jan.23, 2019 Date of Receipt : Dec.17, 2018 Sample Type : Prototype production Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 6 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 2.2. Support Equipment Item Manufacturer Model Remark FCC ID: LDK102073 AP Server CISCO AIR-AP1262N-A-K9 IC:2461B-102073 NCC ID: CCAI10LP092AT0 AP Server D-Link DIR-815A1 FCC ID: KA2IR815A1 IC: 4216A-IR815A1 2.3. Test Channel Frequency Band Channel No. Frequency 20MHz 5260-5320MHz 52 5260MHz (UNII Band II) 80MHz 58 5290MHz 20MHz 5500-5700MHz 100 5500MHz (UNII Band III) 80MHz 106 5530MHz Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 7 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 2.4. Description of Test Facility Site Description Name of Firm : Audix Technology (Shenzhen) Co., Ltd. No. 6, Kefeng Road, Science & Technology Park, Nanshan District, Shenzhen, Guangdong, China EMC Lab. : Certificated by Industry Canada Registration Number: IC 5183A-1 Valid Date: May.07, 2020 : Certificated by DAkkS, Germany Registration No: D-PL-12151-01-00 Valid Date: Dec.07, 2021 : Accredited by NVLAP, USA NVLAP Code: 200372-0 Valid Date: Mar.31, 2019 2.5. Measurement Uncertainty Test Item Uncertainty DFS Measurement 0.5ms Threshold 0.33dB Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 8 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 3. TEST EQUIPMENT Cal. Calibration Item Equipment Manufacturer Model No. Serial No. Last Cal. Interval unit Vector Signal 1. Rohode&Schwarz SMU200A 105064 Oct.14,18 1 Year CCIC Generation Signal 2. Rohode&Schwarz FSV7 102493 Oct.14,18 1 Year CCIC Analyzer Marvelous 3. Attenuator Microwave MVE2213-30 No.2 Oct.14,18 1 Year CCIC 4. Attenuator MCL VAT-20W2-2W 1527-01 Oct.14,18 1 Year CCIC 5. Attenuator MCL VAT-20W2-2W 1527-03 Oct.14,18 1 Year CCIC 6. Attenuator MCL VAT-20W2-2W 1527-02 Oct.14,18 1 Year CCIC Marvelous 7. Power Splitter MVE8576 No.1 Oct.14,18 1 Year CCIC Microwave Marvelous 8. Power Splitter MVE8576 No.2 Oct.14,18 1 Year CCIC Microwave DFS Analysis 9. Test Software Rohode&Schwarz 1EF59_1E N/A N/A N/A Tool Notes: NCR means no calibration required(calibrated with system). N/A means Not applicable. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 9 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 4. WORKING MODES AND REQUIREMENT TEST ITEM 4.1. Applicability of DFS Requirements Prior To Use A Channel Operational Mode Requirement Client without radar Client with radar Master detection detection Non-Occupancy Period    DFS Detection Threshold  Not required  Channel Availability Check Time  Not required Not required U-NII Detection Bandwidth  Not required  4.2. Applicability of DFS Requirements During Normal Operation Operational Mode Requirement Client without radar Client with radar Master detection detection DFS Detection Threshold  Not required  Channel Closing Transmission    Time Channel Move Time    U-NII Detection Bandwidth  Not required  Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 10 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 5. DFS DETECTION THRESHOLOS AND RADAR TEST WAVEFORMS 5.1. Interference Threshold Value, Master or Client Incorporating In-Service Monitoring Maximum Transmit Power Value (See Notes 1 and 2) E.I.R.P. ≥ 200 milliwatt -64dBm E.I.R.P < 200 milliwatt -62dBm Power spectral sensity < 10dBm/MHz E.I.R.P. < 200 milliwatt that do not meet -64dBm the power spectral sensity 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. The radar Detection Threshold, lowest antenna gain is the parameter of interference radar DFS detection threshold. 5.2. Radar Test Waveform Minimum Step Step intervals of 0.1 microsecond for Pulse Width, 1 microsecond for PRI, 1MHz for chirp width and 1 for the number of pulses will be utilized for the random determination of specific test waveforms. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 11 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 5.3. Short Pulse Radar Test Waveforms Minimum Percentage Minimum Radar Pulse Width PRI Number of Pulse of Successful number of Type (µsec) (µsec) Detection Trials 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 23 PRI values in Table 5a Test B: 15 unique PRI values randomly selected within the range of 518-3066 µsec, with a minimum incement of 1 µsec, 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. A minimum of 30 unique waveforms are required for each of the short pulse radar type 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 types 1, then each additional waveform generated with Test B and must also be unique and not repeated from the previous waveforms in Tests A or B. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 12 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 Used R&S SMU200A (Vector SG with two ARB) B11: Base-band Generator with ARB (16M samples) and Digital Modulation B13: Base-band Main Module B106: frequency range (100 kHz to 6 GHz) For selecting the waveform parameters from within the bounds of the signal type, system was random selection using uniform distribution. 5.4. Long Pulse Radar Test Waveforms Minimum Pulse Chirp Number Radar PRI Number of Percentage of Minimum Width Width of Pulse Type (µsec) Bursts Successful of Trials (µsec) (MHz) Per Burst Detection 5 50-100 5-20 1000-2000 1-3 8-20 80% 30 The parameters for this waveform are randomly chosen. Thirty unique waveforms are required for the Long Pulse radar test signal. If more 30 waveforms are used for the Long Pulse radar test signal, then each additional waveform must also be unique and not repeated from the previous waveforms. Each waveform is defined as following: (1) The transmission period for the Long Pulse Radar test signal is 12 seconds. (2) There are a total of 8 to 20 Bursts in the 12 second period, with the number of Bursts being randomly chosen. This number is Burst_Count. (3) Each Burst consists of 1 to 3 pulses, with the number of pulses being randomly chosen. Each Burst within the 12 second sequence may have a different number of pulses. (4) The pulse width is between 50 and 100 microseconds, with the pulse width being randomly chosen. Each pulse within a Burst will have the some pulse width. Pulses in different Bursts may have different pulse widths. (5) Each pulse has a linear FM chirp between 5 and 20MHz, with the chirp width being randomly chosen. Each pulse within a Burst will have the same chirp width. Pulses in different Burst may have different chirp widths. The chirp is centered on the pulse. For example, with a radar frequency of 5300MHz and a 20MHz chirped signal, the chirp starts at 5290MHz and ends at 5310MHz. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 13 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 (6) If more than one pulse is present in a Burst, the time between the pulses will be between 1000 and 2000 microseconds, with the time being randomly chosen. If three pulses are present in a Burst, the time between the first and second pulses is chosen independently of the time between the second and third pulses. (7) The 12 second transmission period is divided into even intervals. The number of intervals is equal to Burst_Count. Each interval is of length (12000000/Burst_Count) microseconds. Each interval contains one Burst. The start time for the Burst, relative to the beginning of the interval, is between 1 and [(12000000/Burst_Count)-(Total Burst length)+(One Random PRI interval)] microseconds, with the start time being randomly chosen. The step interval for the start time is 1 microsecond. The start time for each Burst is chosen independently. A representative example of a Long Pulse radar test waveform: (1) The total test signal length is 12 seconds. (2) 8 Bursts are randomly generated for the Burst_Count. (3) Burst 1 has 2 randomly generated pulses. (4) The pulse width (for both pulses) is randomly selected to be 75 microseconds. (5) The PRI is randomly selected to be at 1213 microseconds. (6) Bursts 2 through 8 are generated using steps 3-5. (7) Each Burst is contained in even intervals of 1500000 microseconds. The starting location for Pulse 1. Burst 1 is randomly generated (1 to 1500000 minus the total Burst 1 length + 1 random PRI interval) at the 325001 microsecond step. Bursts 2 through 8 randomly fall in successive 1500000 microsecond intervals (i.e. Burst 2 falls in the 1500001-3000000 microsecond range). Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 14 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 Used R&S SMU200A (Vector SG with two ARB) Path A/Path B Two B11: Base-band Generator with ARB (16M samples) and Digital Modulation B13: Base-band Main Module B106: frequency range (100 kHz to 6 GHz) For selecting the waveform parameters from within the bounds of the signal type, system was random selection using uniform distribution. 5.5. Frequency Hopping Pulse Radar Test Waveforms Hopping Minimum Pulse Radar PRI Pulses Per Hopping Rate Sequence Percentage of Minimum Width Type (µsec) Hop (kHz) Length Successful of Trials (µsec) (ms) Detection 6 1 333 9 0.333 300 70% 30 For the Frequency Hopping Radar Type, the same Burst parameters are used for each waveform. The hopping sequence is different for each waveform and a 100-length segment is selected from the hopping sequence defined by the following algorithm: The first frequency in a hopping sequence is selected randomly from the group of 475 integer frequencies form 5250-5274MHz. Next, the frequency that was just chosen is removed from the group and a frequency is randomly selected from the remaining 474 frequencies in the group. This process continues until all 475 frequencies are chosen for the set. For selection of random frequency, the frequencies remaining within the group are always treated as equally likely. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 15 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 Used R&S SMU200A (Vector SG with two ARB) B11: Base-band Generator with ARB (16M samples) and Digital Modulation B13: Base-band Main Module B106: frequency range (100 kHz to 6 GHz) For selecting the waveform parameters from within the bounds of the signal type, system was random selection using uniform distribution. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 16 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 5.6. Conducted Calibration Setup Master ATT 30dB Radar Test Signal Generator 2-Way 2-Way ATT 10dB Splitter/ ATT 10dB Splitter/ ATT 10dB Combiner Combiner Spectrum Analyzer (with EUT 10 dB internal (Client) Attenuation) 5.7. Radar Waveform Calibration Procedure The measured frequency is 5260MHz &5290MHz for Band II, 5500MHz & 5530MHz for Band III. 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 calibrated conducted detection threshold level is set to -62dBm. The tested level is lower than required level hence it provides margin to the limit. 5.8. Calibration Deviation There is no deviation with the original standard. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 17 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 5.9. Radar Waveform Calibration Result DFS detection threshold level and the burst of pulses on the Channel frequency UNII Band II UNII Band III 20MHz 20MHz 80MHz 80MHz Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 18 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 6. TEST SETUP AND TEST RESULT 6.1. Test Setup 6.1.1.Test Setup Diagram Following is the test setup for generated the radar waveforms and used to monitor UNII device. Master ATT 30dB Radar Test Signal Generator 2-Way 2-Way ATT 10dB Splitter/ ATT 10dB Splitter/ ATT 10dB Combiner Combiner Spectrum Analyzer (with UUT 10 dB internal (Client) Attenuation) 6.1.2.Test Setup Operation System testing was performed with the designated test file that streams full motion video from the Access Point to Client in full motion video mode using the media player with the V2.61 Codec package. This file is used by IP and Frame based systems for loading the test channel during the in-service compliance testing of the U-NII device. The waveform parameters from within the bounds of the signal type are selected randomly using uniform distribution. A spectrum analyzer is used as a monitor to verify that the EUT has vacated the Channel within the (Channel Closing Transmission Time and Channel Move Time, and does not transmit on a Channel during the Non-Occupancy Period after the detection and Channel move. It is also used to monitor EUT transmissions during the Channel Availability Check Time. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 19 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 6.1.3. Test Setup for Data Traffic Plot UNII Band II UNII Band III 20MHz 20MHz 80MHz 80MHz Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 20 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 6.2. Channel Move Time, Channel Closing Time, Non-Occupancy Period Measurement 6.2.1.Limit Parameter Value 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. Note 1: The instant that the Channel Move Time and the Channel Closing Transmission Time begins is as follows: a. For the Short Pulse Radar Test Signals this instant is the end of the Burst. b. For the Frequency Hopping radar Test Signal, this instant is the end of the last radar Burst generated. c. For the Long Pulse Radar Test Signal this instant is the end of the 12 second period defining the Radar Waveform. 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. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 21 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 6.2.2. Test Procedures 6.2.2.1.When a radar Burst with a level equal to the DFS Detection Threshold + 1dB is generated on the operating channel of the U-NII device. A U-NII device operating as a Client Device will associate with the Master of channel. Stream the MPEG test file from the Master Device to the Client Device on the selected channel for entire period of the test. At time to the radar waveform generator sends a Burst of pulses for each of the radar types at Detection Threshold + 1dB. 6.2.2.2.Observe the transmissions of the EUT at the end of the radar Burst on the Operating channel. Measure and record the transmissions from the EUT during the observation time [Channel Move Time]. One 10 Second plot bee reported for the short Pulse Radar type 1-4 and one for the Long Pulse Radar Type test in a 22 second plot. The plot for the Short Pulse Radar types start at the end of the radar burst. The Channel Move Time will be calculated based on the plot of the short Pulse Radar Type. The Long Pulse Radar Type plot show the device ceased transmissions within the 10 second window after detection has occurred. The plot for the Long Pulse Radar type should start at the beginning of the 12 second waveform. 6.2.2.3.Observe the transmissions of the EUT at the end of the radar Burst on the Operating channel. Measure and record the transmissions from the EUT during the observation time [Channel Move Time]. One 10 Second plot bee reported for the short Pulse Radar type 1-4 and one for the Long Pulse Radar Type test in a 22 second plot. The plot for the Short Pulse Radar types start at the end of the radar burst. The Channel Move Time will be calculated based on the plot of the short Pulse Radar Type. The Long Pulse Radar Type plot show the device ceased transmissions within the 10 second window after detection has occurred. The plot for the Long Pulse Radar type should start at the beginning of the 12 second waveform. 6.2.2.4.Measure the EUT for more than 30 minutes following the channel close/move time to verify that the EUT does not resume only transmissions on this channel. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 22 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 6.2.3. Test Result Applicability of DFS Requirement During Normal Operation 6.2.3.1.Channel Closing Transmission Time & Channel Move Time (PASS) UNII Band II 20MHz 80MHz Test Date：Jan.23, 2019 Test Date：Jan.23, 2019 Channel move time < 10 S Channel move time < 10 S Channel Closing Transmission Time Calculated Channel Closing Transmission Time Calculated Sweep Time(S) sec 12 Sweep Time(S) sec 12 Sweep points (P) 32001 Sweep points (P) 32001 Number of Sweep points in 10 sec (N) 13 Number of Sweep points in 10 sec (N) 13 Channel Closing Time (C) 4.87ms Channel Closing Time (C) 4.87ms Channel closing time is calculated from C=N* Channel closing time is calculated from C=N* dwell; where dwell is the occupancy time per dwell; where dwell is the occupancy time per sweep point calculated by the formula: sweep point calculated by the formula: dwell=S/P. N is the number of sweep points dwell=S/P. N is the number of sweep points indicating transmission after S1; where S1 is indicating transmission after S1; where S1 is the radar signal detected. the radar signal detected. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 23 of 31

AUDIX Technology (Shenzhen) Co., Ltd. FCC ID: AK8SRSXB402 UNII Band III 20MHz 80MHz Test Date：Jan.23, 2019 Test Date：Jan.23, 2019 Channel move time < 10 S Channel move time < 10 S Channel Closing Transmission Time Calculated Channel Closing Transmission Time Calculated Sweep Time(S) sec 12 Sweep Time(S) sec 12 Sweep points (P) 32001 Sweep points (P) 32001 Number of Sweep points in 10 sec (N) 3 Number of Sweep points in 10 sec (N) 8 Channel Closing Time (C) 1.12ms Channel Closing Time (C) 3.00ms Channel closing time is calculated from C=N* Channel closing time is calculated from C=N* dwell; where dwell is the occupancy time per dwell; where dwell is the occupancy time per sweep point calculated by the formula: sweep point calculated by the formula: dwell=S/P. N is the number of sweep points dwell=S/P. N is the number of sweep points indicating transmission after S1; where S1 is indicating transmission after S1; where S1 is the radar signal detected. the radar signal detected. Audix Technology (Shenzhen) Co., ltd.. Report No. ACS-F19024 Page 24 of 31


Document Created: 2019-03-05 17:06:45
Document Modified: 2019-03-05 17:06:45
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