Test report DFS

FCC ID: 2AFZZ-XMSD2SG

Test Report

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FCCID_3897010

FCC DFS TEST REPORT Report No. : FZ850432 FCC DFS TEST REPORT FCC ID : 2AFZZ-XMSD2SG Equipment : Mobile Phone Brand Name : MI Model Name : M1804D2SG Applicant : Xiaomi Communications Co., Ltd. The Rainbow City of China Resources, NO. 68, Qinghe Middle Street, Haidian District, Beijing, China Manufacturer : Xiaomi Communications Co., Ltd. The Rainbow City of China Resources, NO. 68, Qinghe Middle Street, Haidian District, Beijing, China Standard : FCC Part 15 Subpart E The product was received on May 04, 2018 and testing was started from Jun. 05, 2018 and completed on Jun. 05, 2018. We, SPORTON INTERTIONAL INC. EMC & Wireless Communications Laboratory, would like to declare that the tested sample has been evaluated in accordance with the procedures given in FCC Part 15 Subpart E and shown compliance with the applicable technical standards. The report must not be used by the client to claim product certification, approval, or endorsement by TAF or any agency of government. The test results in this report apply exclusively to the tested model / sample. Without written approval of SPORTON INTERTIONAL INC. EMC & Wireless Communications Laboratory, the test report shall not be reproduced except in full. Approved by: Jones Tsai SPORTON INTERTIONAL INC. EMC & Wireless Communications Laboratory No. 52, Huaya 1st Rd., Guishan Dist., Taoyuan City, Taiwan (R.O.C.) TEL : 886-3-327-3456 Page Number : 1 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 Table of Contents History of this test report ................................................................................................................................. 3 Summary of Test Result................................................................................................................................... 4 1 General Description ................................................................................................................................... 5 1.1 Feature of Equipment Under Test .................................................................................................... 5 1.2 Modification of EUT .......................................................................................................................... 5 1.3 Testing Site ....................................................................................................................................... 5 1.4 Applied Standards ............................................................................................................................ 5 1.5 Support Unit used in test configuration and system ......................................................................... 5 2 Requirements and Parameters for DFS Test ........................................................................................... 6 2.1 Summary of Dynamic Frequency Selection Test ............................................................................. 6 2.2 Applicability of DFS Requirements ................................................................................................... 7 2.3 Interference Threshold values, Master or Client incorporating In-Service Monitoring ..................... 8 2.4 DFS Response requirement values .................................................................................................. 8 2.5 Short Pulse Radar Test Waveforms ................................................................................................. 9 3 Calibration Setup and DFS Test Results ............................................................................................... 10 3.1 Calibration of Radar Waveform ...................................................................................................... 10 3.2 In-Service Monitoring: Channel Move Time, Channel Closing Transmission Time and Non-Occupancy Period ................................................................................................................... 12 4 List of Measuring Equipment .................................................................................................................. 18 Appendix A. Setup Photographs TEL : 886-3-327-3456 Page Number : 2 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 History of this test report Report No. Version Description Issue Date FZ850432 01 Initial issue of report Jun. 12, 2018 TEL : 886-3-327-3456 Page Number : 3 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 Summary of Test Result Report Ref Std. Result Test Items Remark Clause Clause (PASS/FAIL) Channel Move Time Pass 0.5887 sec <200ms + 39.6 ms 3.2 7.8.3 Channel Closing Transmission time Pass (aggregate) Non-Occupancy Period and No transmission or Pass Client Beacon Test Beacons occurred Note: Since the product is client without radar detection function, only Channel Move Time, Channel Closing Transmission Time and Non-Occupancy Period Test are required to be performed. Reviewed by: Joseph Lin Report Producer: Polly Tsai TEL : 886-3-327-3456 Page Number : 4 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 1 General Description 1.1 Feature of Equipment Under Test GSM/WCDMA/LTE, Bluetooth, Wi-Fi 2.4GHz 802.11b/g/n, Wi-Fi 5GHz 802.11a/n/ac, and GNSS. Product Specification subjective to this standard WWAN: Coupling type (LDS) Antenna WLAN: Coupling type (LDS) Antenna Antenna Type Bluetooth: Coupling type (LDS) Antenna GPS/A-GPS/Glonass/BDS/Galileo/SBAS/VOIP: Coupling type (LDS) Antenna 1.2 Modification of EUT No modifications are made to the EUT during all test items. 1.3 Testing Site Test Site SPORTON INTERNATIONAL INC. No.52, Huaya 1st Rd., Guishan Dist., Taoyuan City, Taiwan (R.O.C.) Test Site Location TEL: +886-3-327-3456 FAX: +886-3-328-4978 Sporton Site No. Test Site No. DFS02-HY 1.4 Applied Standards According to the specifications of the manufacturer, the EUT must comply with the requirements of the following standards:  FCC Part 15 Subpart E  FCC KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02  FCC KDB 905462 D03 UNII Clients Without Radar Detection New Rules v01r02 Remark: All test items were verified and recorded according to the standards and without any deviation during the test. 1.5 Support Unit used in test configuration and system Item Equipment Trade Name Model Name FCC ID Data Cable Power Cord 1. WLAN AP Motorola AP-7532B UZ7AP7532 FW: WiNG v5.8 Unshielded, 1.8 m AC I/P: Unshielded, 1.2 m 2. Notebook Lenovo Edge E335 PPD-AR5B95 N/A DC O/P: Shielded, 1.8 m TEL : 886-3-327-3456 Page Number : 5 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 2 Requirements and Parameters for DFS Test 2.1 Summary of Dynamic Frequency Selection Test Bandwidth Test Items Limit and Channel 80MHz 5530MHz (CH106) Channel Move Time 10 sec 80MHz 200 ms + Channel Closing (CH106) aggregate of 60 ms over Transmission time 5530MHz remaining 10 s period Non-Occupancy Period and 30 minutes Client Beacon Test TEL : 886-3-327-3456 Page Number : 6 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 2.2 Applicability of DFS Requirements EUT is client and operates as client without radar detection function. Table 1: Applicability of DFS Requirements Prior to Use of a Channel Operational Mode Requirement Client Client With Master Without Radar Radar Detection 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 Operational Mode Client Client Requirement Master Without Radar With Radar Detection Detection 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 Client Beacon Test N/A Yes Yes Operational Mode Additional requirements for devices Master or Client with multiple bandwidth modes Client With Without Radar Detection Radar Detection U-NII Detection Bandwidth and All BW modes Not required Statistical Performance Check must be tested Test using the widest Channel Move Time and Channel Test using widest BW BW mode available Closing Transmission Time 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. TEL : 886-3-327-3456 Page Number : 7 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 2.3 Interference Threshold values, Master or Client incorporating In-Service Monitoring Maximum Transmit Power Value (see notes 1 and 2) ≥ 200 milliwatt -64 dBm < 200 milliwatt -62 dBm 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, The Interference Detection Threshold is the ( -62dBm) + (0) [dBi]+ 1 dB= -61 dBm. 2.4 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. Channel Closing Transmission Time 200 milliseconds + an aggregate of 60 milliseconds over remaining 10 second period. See Notes 1 and 2. U-NII Detection Bandwidth Minimum 100% of the 99% power bandwidth See Note 3. Note 1: The instant that the Channel Move Time and the Channel Closing Transmission Time begins is as follows: • For the Short pulse radar Test Signals this instant is the end of the Burst. • For the Frequency Hopping radar Test Signal, this instant is the end of the last radar Burst generated. • For the Long Pulse radar Test Signal this instant is the end of the 12 second period defining the radar transmission. 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 Channel changes (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 is used and for each frequency step the minimum percentage of detection is 90%. Measurements are performed with no data traffic. TEL : 886-3-327-3456 Page Number : 8 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 2.5 Short Pulse Radar Test Waveforms As the EUT is a Client Device with no Radar Detection, only one type radar pulse is required for the testing. Radar Pulse type 0 was used in the evaluation of the Client device for the purpose of measuring the Channel Move Time and the Channel Closing Transmission Time. Minimum Pulse Radar Percentage of Minimum Width PRI (µsec) Number of Pulses Type Successful Trials (µsec) Detection 0 1 1428 18 60% 30 Test A 1 1 60% 30 Test B 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 Test A: 15 unique PRI values randomly selected from the list of 23 PRI values in Table 5a Test B: 15 unique PRI values randomly selected within the range of 518-3066 μsec, with a minimum increment of 1 μsec, excluding PRI values selected in Test A A minimum of 30 unique waveforms are required for each of the short pulse radar types 2 through 4. For short pulse radar type 1, the same waveform is used a minimum of 30 times. 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. The aggregate is the average of the percentage of successful detections of short pulse radar types 1-4. TEL : 886-3-327-3456 Page Number : 9 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 3 Calibration Setup and DFS Test Results 3.1 Calibration of Radar Waveform 3.1.1 Radar Waveform Calibration Procedure The Interference Radar Detection Threshold Level is (-62dBm) + (0) [dBi]+ 1 dB= -61dBm that had been taken into account the output power range and antenna gain. The following equipment setup was used to calibrate the radiated Radar Waveform. A vector signal generator was utilized to establish the test signal level for radar type 0. During this process there were no transmissions by either the Master or Client Device. The spectrum analyzer was switched to the zero span (Time Domain) at the frequency of the Radar Waveform generator. Peak detection was used. The spectrum analyzer resolution bandwidth (RBW) and video bandwidth (VBW) were set to 3 MHz to measure the type 0 radar waveform. The spectrum analyzer had offset to compensate and RF cable loss. The vector signal generator amplitude was set so that the power level measured at the spectrum analyzer was (-62dBm) + (0) [dBi]+ 1 dB= -61 dBm. Capture the spectrum analyzer plots on short pulse radar waveform. 3.1.2 Conducted Setup 3.1.3 Calibration Deviation There is no deviation with the original standard. TEL : 886-3-327-3456 Page Number : 10 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 3.1.4 Radar Waveform Calibration Result <80MHz / 5530MHz> Radar Type 0 Radar / DFS detection threshold level and the burst of pulses on the Channel frequency TEL : 886-3-327-3456 Page Number : 11 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 3.2 In-Service Monitoring: Channel Move Time, Channel Closing Transmission Time and Non-Occupancy Period 3.2.1 Limit of In-Service Monitoring The EUT has In-Service Monitoring function to continuously monitor the radar signals, If radar is detected, it must leave the channel (Shutdown). The Channel Move Time to cease all transmissions on the current Channel upon detection of a Radar Waveform above the DFS Detection Threshold within 10 sec. The total duration of 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 Channel changes (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. Non-Occupancy Period time is 30 minute during which a Channel will not be utilized after a Radar Waveform is detected on that Channel. The non-associated Client Beacon Test is during the 30 minutes observation time. The EUT should not make any transmissions in the DFS band after EUT power up. TEL : 886-3-327-3456 Page Number : 12 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 3.2.2 Test Procedures 1. The radar pulse generator is setup to provide a pulse at frequency that the Master and Client are operating. A type 0 radar pulse with a 1us pulse width and a 1428 us PRI is used for the testing. 2. The vector signal generator is adjusted to provide the radar burst (18 pulses) at a level of approximately -62dBm at the antenna of the Master device. 3. A trigger is provided from the pulse generator to the DFS monitoring system in order to capture the traffic and the occurrence of the radar pulse. 4. A U-NII device operating as a Client Device will associate with the Master at Channel. The MPEG file “TestFile.mpg” specified by the FCC is streamed from the “file computer” through the Master to the Client Device and played in full motion video using Media Player Classic Ver. 6.4.8.6 in order to properly load the network for the entire period of the test. 5. 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. At time T0 the Radar Waveform generator sends a Burst of pulse of the radar waveform at Detection Threshold + 1dB. 6. 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 12 seconds plot is reported for the Short Pulse Radar Types 0. 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 zoom in 600ms plot of the Short Pulse Radar Type. 7. Measurement of the aggregate duration of the Channel Closing Transmission Time method. With the spectrum analyzer set to zero span tuned to the center frequency of the EUT operating channel at the radar simulated frequency, peak detection, and max hold, the dwell time per bin is given by: Dwell (0.4ms)= S (12000ms) / B (30000); where Dwell is the dwell time per spectrum analyzer sampling bin, S is the sweep time and B is the number of spectrum analyzer sampling bins. An upper bound of the aggregate duration of the intermittent control signals of Channel Closing Transmission Time is calculated by: C (ms)= N X Dwell (0.4 ms); where C is the Closing Time, N is the number of spectrum analyzer sampling bins (intermittent control signals) showing a U-NII transmission and Dwell is the dwell time per bin. 8. Measure the EUT for more than 30 minutes following the channel move time to verify that no transmissions or beacons occur on this Channel. 9. The test frequency , bandwidth and data rate as following table: BW / Channel Test Data Rate 80MHz / 5530MHz MCS0 TEL : 886-3-327-3456 Page Number : 13 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 3.2.3 Test Setup Conducted Setup Photo 3.2.4 Test Deviation There is no deviation with the original standard. TEL : 886-3-327-3456 Page Number : 14 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

seovc«s. FCC DFS TEST REPORT Report No. : FZ850432 3.2.5 Result of Channel Move Time, Channel Closing Transmission Time and Non—Occupancy Period for Client Beacon Test Test Mode : Client without radar detection Temperature : 24~26°C Test Engineer : |PH Yang Relative Humidity : [45~50% BW / Test Item Test Result Limit Pass/Fail Channel Channel Move Time 0.5887 s < 10s Pass BOMHz / Channel Closing Transmission Time 200ms + 39.6 ms < 260ms Pass 5530MHz Non—Occupancy Period > 30 > 30 min Pass Note: 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 seconds period. The aggregate duration of control signals will not count quiet periods in between transmissions. TEL : 886—3—327—3456 Page Number : 15 of 18 FAX : 886—3—328—4978 Issued Date : Jun. 12, 2018 Report Template No.: BUS—FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 3.2.6 Channel Move Time, Channel Closing Transmission Time and Non-Occupancy Period for Client Beacon Test Plots <80MHz / 5530MHz> In-Service Monitoring Channel Move Time & Channel Closing Transmission Time Non-associated test Non-Occupancy Period Master was off. (beacon test) Note: Dwell (0.4 ms)= Sweep Time (12000 ms) / Sweep Point Bins (30000) Channel Closing Transmission Time (200 + 39.6 ms) = 200 + Number (99) X Dwell (0.4 ms) < 260ms TEL : 886-3-327-3456 Page Number : 16 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 3.2.7 Data Traffic and Noise Floor Plots EUT data traffic (Client) Noise Floor (No transmission) TEL : 886-3-327-3456 Page Number : 17 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01

FCC DFS TEST REPORT Report No. : FZ850432 4 List of Measuring Equipment Calibration Instrument Manufacturer Model No. Serial No. Characteristics Test Date Due Date Remark Date Signal Rohde & DFS SMJ100A 101375 100kHz~6GHz Jan. 23, 2018 Jun. 05, 2018 Jan. 22, 2019 Generator Schwarz (DFS02-HY) Spectrum DFS Keysight N9010A MY56070412 10Hz~7GHz Aug. 08, 2017 Jun. 05, 2018 Aug. 07, 2018 Analyzer (DFS02-HY) 3Way SMA ST108-0010 Calibration Calibration DFS Power Divider Woken 2G~8GHz Jun. 05, 2018 Power Divider (#4) from System from System (DFS02-HY) 2Way SMA Calibration Calibration DFS Power Divider MTJ MD10007 0.5G~6GHz Jun. 05, 2018 Power Divider from System from System (DFS02-HY) 4Way SMA 0120A020560 Calibration Calibration DFS Power Divider Woken 0.5G~6GHz Jun. 05, 2018 Power Divider 02D from System from System (DFS02-HY) MTJ SBF405-105F Calibration Calibration DFS RF Cable MTJ-30cm-01 30 kHz~18GHz Jun. 05, 2018 Cooperstion LEX from System from System (DFS02-HY) MTJ SBF405-105F Calibration Calibration DFS RF Cable MTJ-30cm-02 30 kHz~18GHz Jun. 05, 2018 Cooperstion LEX from System from System (DFS02-HY) MTJ SBF405-105F Calibration Calibration DFS RF Cable MTJ-30cm-03 30 kHz~18GHz Jun. 05, 2018 Cooperstion LEX from System from System (DFS02-HY) MTJ SBF405-105F Calibration Calibration DFS RF Cable MTJ-30cm-04 30 kHz~18GHz Jun. 05, 2018 Cooperstion LEX from System from System (DFS02-HY) MTJ SBF405-105F Calibration Calibration DFS RF Cable MTJ-30cm-05 30 kHz~18GHz Jun. 05, 2018 Cooperstion LEX from System from System (DFS02-HY) MTJ SBF405-105F Calibration Calibration DFS RF Cable MTJ-30cm-06 30 kHz~18GHz Jun. 05, 2018 Cooperstion LEX from System from System (DFS02-HY) Calibration Calibration DFS RF Cable Woken S05(100cm) 161202-04 30 kHz~18GHz Jun. 05, 2018 from System from System (DFS02-HY) Calibration Calibration DFS RF Cable Woken S05(100cm) 161202-05 30 kHz~18GHz Jun. 05, 2018 from System from System (DFS02-HY) TEL : 886-3-327-3456 Page Number : 18 of 18 FAX : 886-3-328-4978 Issued Date : Jun. 12, 2018 Report Template No.: BU5-FZ15EDFS Version 1.1 Report Version : 01


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Document Modified: 2019-10-10 00:17:05
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