DFS Test Report

FCC ID: RD7-7822UNCUS

Test Report

Download: PDF
FCCID_4081397

(& \ntl Report Number: 1810FR14 DFS Test Report Applicant : NETSCOUT Systems Inc. Product Type : 11ac Wireless Dual—Band Selectable USB Adapter Trade Name : NETSCOUT Model Number : EW—7822UNC — US Applicable Standard _: FCC 47 CFR PART 15 SUBPART E ANSI €63.10:2013 Receive Date : Sep. 03, 2018 Test Period : Sep. 25, 2018 Issue Date : Nov. 01, 2018 Issue by A Test Lab Techno Corp. tm & S 2 No. 140—1, Changan Street, Bade District, ifi{fi @ y—mg ° Tacyuan City 33465, Taiwan (R.0.C) TfoyS wrrmenis Tel : +886—3—2710188 / Fax : +886—3—2710190 Taiwan Accreditation Foundation accreditation number: 1330 Test Firm MRA designation number: TWOO010 Note: This report shall not be reproduced except in full, without the written approval of A Test Lab Techno Corp. This document may be altered or revised by A Test.Lab Techno Corp. personnel only, and shall be noted in the revision section of the document. The client should not use it to claim product endorsement by TAF, or any government agencies.. The test results in the report.only apply to the tested sample. 1 of 21

Report Number: 1810FR14 Revision History Rev. Issue Date Revisions Revised By 00 Nov. 01, 2018 Initial Issue Janet Chao 2 of 21

@l Report Number: 1810FR14 Verification of Compliance Issued Date: Nov. 01, 2018 Applicant NETSCOUT Systems Inc. Product Type 11ac Wireless Dual—Band Selectable USB Adapter Trade Name NETSCOUT Model Number EW—7822UNC — US FCC ID RD7—7822UNCUS EUT Rated Voltage DC 5 V Test Voltage 120 Vac / 60 Hz Applicable Standard FCC 47 CFR PART 15 SUBPART E ANSI C€63.10:2013 Test Result Complied Performing Lab. N/z & A Test Lab Techno Corp. iitg;% (TA\_D No. 140—1, Changan Street, Bade District, 8MRA _‘ Taoyuan City 33465, Taiwan (R.O0.C) Adas im_ Tel : +886—3—2710188 / Fax : +886—3—2710190 Taiwan Accreditation Foundation accreditation number: 1330 http:/Avww.atl—lab.com.tw/e—index.htm A Test Lab Techno Corp. tested the above equipment in accordance with the requirements set forth in the above standards. All indications of Pass/Fail in this report are opinions expressed by A Test Lab Techno Corp. based on interpretations and/or observations of test results. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Approved By : zly ‘;/ [A Reviewed By Efl’f@ Ou Y@Tg &0 Lz* (Manager) (Fly Lu) (Testing Engineer) (Eric Ou Yang) 3 of 21

Report Number: 1810FR14 TABLE OF CONTENTS 1 EUT Description .......................................................................................................................... 5 2 Test Methodology ....................................................................................................................... 7 3 Dynamic Frequency Selection ................................................................................................... 8 3.1. Limits .................................................................................................................................... 8 3.2. Test and Measurement System .......................................................................................... 12 3.3. Test Instruments ................................................................................................................. 13 4 Test Methodology ..................................................................................................................... 14 4.1. Mode of Operation .............................................................................................................. 14 4.2. EUT Test Step..................................................................................................................... 14 4.3. Test Site Environment ......................................................................................................... 14 5 Test Results............................................................................................................................... 15 5.1. Radar Waveforms and Traffic ............................................................................................. 15 5.2. Channel Move Time and Channel Closing Transmission Time ........................................... 19 5.3. Non-Occupancy Period....................................................................................................... 20 5.4. Non-Associated Test ........................................................................................................... 21 4 of 21

@l Report Number: 1810FR 14 1 EUT Description NETSCOUT Systems Inc Applcant 310 Liffeton Road, Westford, Massachusetts, 01886—4105, United States Menutacturer EDIM®X TEcHNoL 06y c0 . LtD No 278. Xinhu 1st Road Neihu Dist, Teipei City, Tewen (R.0.C.} Product Type 1120 Wreless Dusl—Band Selectable USB Adapter Trade Name NEtscout Model Number Ew—reazuNc—us reeio Ror—re22uncus Frequency Band Frequency fihoRange Number Chomarsof U—NII Band IFA 52605820 a EEE 802110 U—NII Band iC |___se00—5700 s EEE 802.11n 5 GHz 20 tite |U—NIl Band tA $260—5320 a Operate Frequency /IEEE 802.ttee 20 Mz (u—NiI8end TLC 5500 —5700 s EEE 802.11n 5 GHz 40 titz. |U—NIl Band tA $270—Se10 2 11EEE 802. 118040 Wz U—Nil Band I+C sero—sero 3 U—NI Band ThA s2eo 1 IEEE 802.1 18e 80 MHz U—NII Band I—C seeo 1 Medulation Type orom Equipment Type Client devices Antenna Model Type Frequency Mex. Gain ic — U—NII Band ThA ase ANTO viermteapaes Merenste (Main) Anterna U—NII Band I—C 165 Antenna information — U—NII Band ThA 151 ANU eviermteazaes Morente (Aux) Antern® U—NIIBend IC 3.07 U—NII Band I+A 1.05 cant U—NI Band tC —0.10 [Antenns Delvery Reference section 3.1 Frequency Stabiity + 20 pom Specifention Operate Temp.Range a— «40 °c 5 of 21

@l Report Number: 1810FR 14 tems Description Communication Mode NP Based (Load Based) CFrame Based TPC Function Mikle CWithout TPC Westher Band (5600 — 5650 MHz) C¥ $600 — 5650 Mz NVthout 5600 — 5650 MHz Beamforming Function RNVth Geamforming CWWithout Beemforming Coutdoor eecess point indoor acsess point Equipment Type CF ied pointo—point access points RCiient devices CMaster CCientwith reder detection ICent without radar detection Opersting mode CAHoo Cndge CvesH TestAP FoC ID preisioosie Nete DFS controls (nardware or softwere} related to radar detection are NOT accessible t the user. Menufacturerstatement confiming thatinformation regarding the paremeters of the detected Redar Wave frms is not available tothe end user. 6 of 21

Report Number: 1810FR14 2 Test Methodology The tests documented in this report were performed in accordance with ANSI C63.10-2013, FCC CFR 47 Part 2, FCC CFR 47 Part 15. The tests documented in this report were performed in accordance with FCC KDB request:  FCC KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02  FCC KDB 905462 D03 UNII Clients Without Radar Detection New Rules v01r02 7 of 21

(K\fl-‘tl Report Number: 1810°R 14 3 Dynamic Frequency Selection 3.1. Limits §15.407 (h) and FCC KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02 Compliance measurement procedures for unlicensed—national information infrastructure deveies operating in the 5250—5350 MHZ and 5470—5725 MHZ bands incorporating dynamic frequency selection Table 1: Applicability of DFS Requirements Prior to Use of a Channel Operstional Mose Requirement Clent Cient Master (without redar (with redar detection) detection ) Non—Occupancy Period Yes Notrequired Yes DFS Detection Threshald Yes Notrequired Yes Chamel Availabiity Check Time Yes Notrequired Notrequired U—Hl Detection Bandwicth Yes Notrequired Yes Table 2: Applicability of DFS requirements during normal operation Operational Mode Requirement Master Device or Client With Redar Detection Client without Redar Detection DFS Detection Threshold Yes Notrequired Channel Closing Transmission Time Yes Yes Chamnel Move Time Yes Yes U—hill Detection Bandwicth Yes Notrequired Additional requirements for devices with Master Device or Client mutisle bandwicth modes WWith Redar Detection Cent wihout Redar Detection U—Hl Detection Statisical Bandwicth Performance and Chack All BW modes must be tested Not required Channel Mave Time and Channel Test using widest BW mode Test using the widest BW mode Closing Trensmission Time available available forthe lnk All other tests Any single BW mode Notrequired Note Frequencies selected for statistical performance check (Section 7 8.4) should include several requencies within the redar detection bandvidth and frequencies neer the edge of the rader detection bandwicth. For 802.11 devices itis suggested to select frequencies in all 20 MHz channel blocks and a nul frequencies between the bonded 20 Wz channel blocks 8 of 21

Report Number: 1810FR14 Table 3: DFS Detection Thresholds for Master Devices and Client Devices With Radar Detection Maximum Transmit Power Value (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 power spectral -64 dBm density requirement Note 1: This is the level at the input of the receiver assuming a 0 dBi receive antenna. Note 2: Throughout these test procedures an additional 1 dB has been added to the amplitude of the test transmission waveforms to account for variations in measurement equipment. This will ensure that the test signal is at or above the detection threshold level to trigger a DFS response. Note 3: EIRP is based on the highest antenna gain. For MIMO devices refer to FCC KDB Publication 662911 D01. Table 4: 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 milliseconds over Channel Closing Transmission Time remaining 10 second period. See Notes 1 and 2. Minimum 100 % of the U-NII 99 % transmission power U-NII Detection Bandwidth 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. 9 of 21

Report Number: 1810FR14 Table 5: Short Pulse Radar Test Waveforms Minimum Minimum Pulse Width PRI Number of Percentage of Radar Type Number of (μsec) (μsec) Pulses Successful Trials Detection 0 1 1428 18 See Note 1 See Note 1 1 1 Test A: 15 unique 60 % 30 PRI values randomly selected from the list 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 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. 10 of 21

Report Number: 1810FR14 Table 5a: Pulse Repetition Intervals Values for Test A Pulse Repetition Frequency Pulse Repetition Frequency Pulse Repetition Interval Number (Pulses Per Second) (Microseconds) 1 1930.5 518 2 1858.7 538 3 1792.1 558 4 1730.1 578 5 1672.2 598 6 1618.1 618 7 1567.4 638 8 1519.8 658 9 1474.9 678 10 1432.7 698 11 1392.8 718 12 1355 738 13 1319.3 758 14 1285.3 778 15 1253.1 798 16 1222.5 818 17 1193.3 838 18 1165.6 858 19 1139 878 20 1113.6 898 21 1089.3 918 22 1066.1 938 23 326.2 3066 Table 6 – Long Pulse Radar Test Signal Pulses Pulse Chirp Minimum Percentage Radar Minimum Bursts per Width Width PRI (µsec) of Successful Waveform Trials Burst (µsec) (MHz) Detection 5 8-20 1-3 50-100 5-20 1000-2000 80 % 30 Table 7 – Frequency Hopping Radar Test Signal Pulse Burst Pulses Hopping Minimum Percentage Radar PRI Minimum Width Length per Rate of Successful Waveform (µsec) Trials (µsec) (ms) Hop (kHz) Detection 6 1 333 300 9 0.333 70 % 30 11 of 21

(&\“_/tl Report Number: 1810FR14 3.2. Test and Measurement System 3.2.1. Setup for Client with injection at the Master Example Radiated Setup where UUT is a Client and Radar Test Waveforms are injected into the Master Radar Test 1O Signal Generator Master Oe Lw Spitter 2viey s amoe}—»| Spitter [atne II Combiner Combiner Spectrum UUT Analyzer (Client) (wih 10 dBintenal Afrvaton) Tested System Details The types for all equipments, plus descriptions of all cables used in the tested system (including inserted cards) are: Product Manufacturer Model No. ID 1. Netgear Access Point Netgear R7800 FCC : PY35100319 3.2.2. System Calibration The short pulse types 0,1,2, 3 and 4, and the long pulse type 5 parameters are randomized at run—time. The hopping type 6 pulse parameters are fixed while the hopping sequence is based on the May 2014 NTIA Hopping Frequency List. The initial starting point randomized at run—time and each subsequent starting point is incremented by 475. Each frequency in the 100—length segment is compared to the boundaries of the EUT Detection Bandwidth and the software creates a hopping burst pattern in accordance with Section 7.4.1.3 Method #2 Simulated Frequency Hopping Radar Waveform Generating Subsystem of FCC KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02 The frequency of the signal generator is incremented in 1 MHz steps from FL to FH for each successive trial. This incremental sequenceis repeated as required to generate a minimum of 30 total trials and to maintain a uniform frequency distribution over the entire Detection Bandwidth. The signal monitoring equipment consists of a spectrum analyzer. The aggregate ON time is calculated by multiplying the number of bins above a threshold during a particular observation period by the dwell time per bin, with the analyzer set to peak detection and max hold. 12 of 21

Report Number: 1810FR14 3.2.3. System Calibration The Interference Radar Detection Threshold Level is (-64 dBm), The above equipment setup was used to calibrate the radiated Radar Waveform. A vector signal generator was utilized to establish the test signal level for each radar type. During this process there were replace 50 ohm terminal form Master and Client device and 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 at least 3 MHz. The vector signal generator amplitude was set so that the power level measured at the spectrum analyzer was (-64 dBm). Capture the spectrum analyzer plots on short pulse radar types, long pulse radar type and hopping radar waveform. 3.2.4. Adjustment of Displayed Traffic Level A link is established between the Master and Slave and the distance between the units is adjusted as needed to provide a suitable received level at the Master and Slave devices. Software to ping the client is permitted to simulate data transfer but must have random ping intervals. The monitoring antenna is adjusted so that the WLAN traffic level, as displayed on the spectrum analyzer, is at lower amplitude than the radar detection threshold. 3.3. Test Instruments Test Period: Sep. 25, 2018 Equipment Manufacturer Model Number Serial Number Cal. Date Remark Spectrum Analyzer Agilent N9030A MY53120541 01/02/2018 1 year (3 Hz~50 GHz) Signal Generator Agilent N5182B MY53050382 05/24/2018 1 year Note N.C.R. = No Calibration Request. 13 of 21

Report Number: 1810FR14 4 Test Methodology 4.1. Mode of Operation Decision of Test ATL has verified the construction and function in typical operation. All the test modes were carried out with the EUT in normal operation, which was shown in this test report and defined as: Test Mode Mode 1: IEEE 802.11ac 80 MHz Continuous TX mode IEEE 802.11ac 80 MHz Continuous TX mode Unless otherwise noted, all tests were performed with the radar burst at the channel center frequency of 5530 MHz. 4.2. EUT Test Step 1. Setup the EUT shown on 3.2.1 2. Turn on the power of all equipment. 3. Turn on Wi-Fi function link to Notebook. 4. The EUT is operated in the engineering mode to fix the TX frequency for the purposes of measurement. 4.3. Test Site Environment Items Required (IEC 60068-1) Actual Temperature (C) 15-35 26 Humidity (%RH) 25-75 60 Barometric pressure (mbar) 860-1060 990 14 of 21

Report Number: 1810FR14 5 Test Results 5.1. Radar Waveforms and Traffic Mode 1: IEEE 802.11ac 80 MHz Continuous TX mode _ 5530 MHz Short Pulse Radar Type 0 Short Pulse Radar Type 1A 15 of 21

Report Number: 1810FR14 Mode 1: IEEE 802.11ac 80 MHz Continuous TX mode _ 5530 MHz Short Pulse Radar Type 1B Short Pulse Radar Type 2 16 of 21

Report Number: 1810FR14 Mode 1: IEEE 802.11ac 80 MHz Continuous TX mode _ 5530 MHz Short Pulse Radar Type 3 Short Pulse Radar Type 4 17 of 21

Report Number: 1810FR14 Mode 1: IEEE 802.11ac 80 MHz Continuous TX mode _ 5530 MHz Short Pulse Radar Type 5 Short Pulse Radar Type 6 18 of 21

Report Number: 1810FR14 5.2. Channel Move Time and Channel Closing Transmission Time 5.2.1. Reporting Notes The reference marker is set at the end of last radar pulse. The delta marker is set at the end of the last WLAN transmission following the radar pulse. This delta is the channel move time. The aggregate channel closing transmission time is calculated as follows: Aggregate Transmission Time = (Number of analyzer bins showing transmission) * (dwell time per bin) The 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. Results Frequency Channel Move Time Limit Radar Type (MHz) (sec) (sec) 5530 Type 0 0.493 10 Frequency Aggregate Channel Closing Transmission Time Limit Radar Type (MHz) (msec) (msec) 5530 Type 0 2.9999 60 Mode 1: IEEE 802.11ac 80 MHz Continuous TX mode _ 5530 MHz Channel Move and Closing Time 19 of 21

Report Number: 1810FR14 5.3. Non-Occupancy Period Mode 1: IEEE 802.11ac 80 MHz Continuous TX mode _ 5530 MHz Note: Non-Occupancy Period time is 30 minute during which a Channel will not be utilized after a Radar Waveform is detected on that Channel. 20 of 21

Report Number: 1810FR14 5.4. Non-Associated Test Mode 1: IEEE 802.11ac 80 MHz Continuous TX mode _ 5530 MHz Type1 Note: 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. 21 of 21


Document Created: 2018-11-13 09:18:17
Document Modified: 2018-11-13 09:18:17
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC