WM524 WIFI Module Test Report DFS Shenzhen KeZhongLong Optoelectronic Technology Co., Ltd.
Shenzhen KeZhongLong Optoelectronic Technology Co., Ltd. WIFI Module
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FCC ID Filing: 2AF2K-WM524
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RADIO DFS TEST REPORT Report No: STS1708150W03 Issued for Shenzhen KeZhongLong Optoelectronic Technology Co., Ltd. 3/F, B5 Bldg., XinFu Industrial Zone, ChongQing Road, FuYong Street, BaoAn District Shenzhen, Guangdong, China Product Name: WIFI Module Brand Name: N/A Model Name: WM524 Series Model: N/A FCC ID: Test Standard: 2AF2K-WM524 FCC Part 15.407 Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from STS, All Test Data Presented in this report is only applicable to presented Test sample. Shenzhen STS Test Services Co., Ltd. 1/F., Building B, Zhuoke Science Park, No.190, Chongqing Road, Fuyong Street, Bao’an District, Shenzhen, Guangdong, China TEL: +86-755 3688 6288 FAX: +86-755 3688 6277 E-mail:firstname.lastname@example.org Page 2 of 28 Report No.: STS1708150W03 TEST REPORT CERTIFICATION Applicant’s name ................. : Shenzhen KeZhongLong Optoelectronic Technology Co., Ltd. 3/F, B5 Bldg., XinFu Industrial Zone, ChongQing Road, FuYong Address ................................. : Street, BaoAn District Shenzhen, Guangdong, China Manufacture's Name ............ : Shenzhen KeZhongLong Optoelectronic Technology Co., Ltd. 3/F, B5 Bldg., XinFu Industrial Zone, ChongQing Road, FuYong Address ................................. : Street, BaoAn District Shenzhen, Guangdong, China Product description Product name ........................ : WIFI Module Trademark ............................ : N/A Model and/or type reference : WM524 Series Model： N/A Standards ............................. : FCC Part 15.407 905462 D02 UNII DFS Compliance Procedures New Rules v02, 905462 D03 Client Without DFS New Rules v01r02 This device described above has been tested by STS, and the test results show that the equipment under test (EUT) is in compliance with the FCC&IC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of STS, this document may be altered or revised by STS, personal only, and shall be noted in the revision of the document. Test procedure Date of Test ........................................... : Date (s) of performance of tests ............. : 18 Aug. 2017~28 Aug. 2017 Date of Issue .......................................... : 30 Aug. 2017 Test Result.............................................. : Pass Testing Engineer (Sean she) Technical Manager (Hakim.hou) Authorized Signatory : (Vita Li) Page 3 of 28 Report No.: STS1708150W03 Table of Contents 1. SUMMARY OF TEST RESULTS 1.1 TEST FACTORY 1.2 MEASUREMENT UNCERTAINTY 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT 2.2 TEST CONDITIONS AND CHANNEL 2.3 DFS MEASUREMENT INSTRUMENTATION 2.4 EQUIPMENTS LIST FOR ALL TEST ITEMS 10 3. DFS PARAMETERS 11 3.1 DFS PARAMETERS 11 3.2 RADAR WAVEFORM CALIBRATION 15 3.3 DFS –TEST RESULTS 19 Page 4 of 28 Report No.: STS1708150W03 Revision History Rev. Issue Date Report NO. Effect Page Contents 00 30 Aug. 2017 STS1708150W03 ALL Initial Issue Page 5 of 28 Report No.: STS1708150W03 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02 Part 15.407 Operational Mode Requirement RESULTS Master Client Non-Occupancy Period Yes Yes Pass DFS Detection Threshold Yes Not required Not required Channel Availability Check Time Yes Not required Not required Channel Closing Transmission Time Yes Yes Pass Channel Move Time Yes Yes Pass U-NII Detection Bandwidth Yes Not required Not required Channel Loading Yes Yes Pass 1.1 TEST FACTORY Shenzhen STS Test Services Co., Ltd. Add. : 1/F., Building B, Zhuoke Science Park, No.190, Chongqing Road, Fuyong Street, Bao’an District, Shenzhen, Guangdong, China CNAS Registration No.: L7649 FCC Registration No.: 625569; IC Registration No.: 12108A 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %。 No. Item Uncertainty DFS Threshold (radiated) ±1.50dB DFS Threshold (conducted) ±1.45dB Temperature ±0.5°C Humidity ±2% Page 6 of 28 Report No.: STS1708150W03 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Equipment WIFI Module Brand Name N/A Model Name WM524 Series Model N/A Model Difference N/A The EUT is WIFI Module 802.11a/n/ac(HT20):5260 MHz -5320 MHz 802.11a/n/ac(HT40):5270 MHz -5310 MHz Operation Frequency: 802.11ac(HT80) 5290MHz 802.11a/n/ac(HT20):5500 MHz -5700 MHz 802.11a/n/ac(HT40):5510 MHz -5670 MHz Product Description 802.11ac(HT80) 5775MHz Channel List Modulation Type: OFDM/DBPSK/DAPSK Number Of Please see Note 2. Channel Antenna Ant A:1dBi Gain(Peak) Ant B:1dBi Based on the application, features or specification exhibited in User’s Manual, the EUT is considered as an ITE/Computing Device. More details of EUT technical specification, please refer to the User’s Manual. Refer to below Sub-class H01 Power Rating DC 5V Hardware version number Software version number V1.0 V184.108.40.206 Note: 1 For a more detailed features description, please refer to the manufacturer’s specifications or . the User’s Manual. Page 7 of 28 Report No.: STS1708150W03 Channel Frequency (MHz) 52 5260 Channel Frequency (MHz) 54 5270 Channel List for 802.11a/n/ac (HT20) Frequency Cha Frequency Channel (MHz) nnel (MHz) 56 5280 60 5300 Channel List for 802.11n/ac (HT40) Frequency Chan Frequency Channel (MHz) nel (MHz) 62 Channel Frequency (MHz) 64 5320 Channel Frequency (MHz) Channel Frequency (MHz) 5310 Channel List for 802.11a/n/ac (HT20) Frequency Chan Frequency Channel (MHz) nel (MHz) Channel Frequency (MHz) 100 5500 104 5520 108 5540 112 5560 116 5580 120 5600 124 5620 128 5640 132 5660 136 5680 140 5700 Channel Channel List for 802.11 n/ac (HT40) Frequency Channel (MHz) 102 5510 134 5670 110 Frequency (MHz) 5550 For 802.11ac (HT80) Channel Freq.(MHz) Channel Freq.(MHz) 58 5290 106 5530 122 5610 Page 8 of 28 Report No.: STS1708150W03 3.EQUIPMENT UNDER TEST (EUT) DETAILS The manufacturer declared values for the EUT operational characteristics that affect DFS are as follows Operating Modes (5250 – 5350 MHz, 5470 – 5725 MHz) Master Device Client Device (no In Service Monitoring, no Ad-Hoc mode)(without radar detection capability) Client Device with In-Service Monitoring Antenna Gains / EIRP (5250 – 5350 MHz, 5470 – 5725 MHz) 5250 – 5350 MHz 5300MHz (a) 5290MHz(HT80) Lowest Antenna Gain (dBi) Highest Antenna Gain (dBi) DFS Detection Threshold (dBm) -62 5470 – 5725 MHz 5580MHz (a) 5610MHz(HT80) Lowest Antenna Gain (dBi) Highest Antenna Gain (dBi) DFS Detection Threshold (dBm) -62 Channel Protocol IP Based Frame Based OTHER_____________________ The EUT did not require modifications during testing in order to comply with the requirements of the standard(s) referenced in this test report. 2.2 TEST CONDITIONS AND CHANNEL Normal Test Conditions Temperature 15°C – 35°C Relative Humidity 20% - 75% Supply Voltage DC 5V Note: (1) The measurements are performed at the lowest available channels. Page 9 of 28 Report No.: STS1708150W03 2.3 DFS MEASUREMENT INSTRUMENTATION a. RADAR GENERATION SYSTEM An Agilent PSG is used as the radar-generating source. The integral arbitrary waveform generators are programmed using Agilent’s “Pulse Building” software and Elliott custom software to produce the required waveforms, with the capability to produce both unmodulated and modulated (FM Chirp) pulses. Where there are multiple values for a specific radar parameter then the software selects a value at random and, for FCC tests,the software verifies that the resulting waveform is truly unique. With the exception of the hopping waveforms required by the FCC’s rules (see below),the radar generator is set to a single frequency within the radar detection bandwidth of the EUT. Frequency hopping radar waveforms are simulated using a time domain model. A randomly hopping sequence algorithm (which uses each channel in the hopping radar’s range once in a hopping sequence) generates a hop sequence. A segment of the first 100 elements of the hop sequence are then examined to determine if it contains one or more frequencies within the radar detection bandwidth of the EUT. If it does not then the first element of the segment is discarded and the next frequency in the sequence is added. The process repeats until a valid segment is produced. The radar system is then programmed to produce bursts at time slots coincident with the frequencies within the segment that fall in the detection bandwidth. The frequency of the generator is stepped in 1 MHz increments across the EUT’s detection range. The radar signal level is verified during testing using a CW signal with the AGC function switched on. Correction factors to account for the fact that pulses are generated with the AGC functions switched off are measured annually and an offset is used to account for this in the software.The generator output is connected to the coupling port of the conducted set-up or to the radar-generating antenna. b. CHANNEL MONITORING SYSTEM Channel monitoring is achieved using a spectrum analyzer and digital storage oscilloscope. The analyzer is configured in a zero-span mode, center frequency set to the radar waveform’s frequency or the center frequency of the EUT’s operating channel. The IF output of the analyzer is connected to one input of the oscilloscope and analyzer. A signal generator output is set to send either the modulating signal directly or a pulse gate with an output pulse co-incident with each radar pulse. This output is connected to a second input on the oscilloscope and the oscilloscope displays both the channel traffic (via the if input) and the radar pulses on its display. For in service monitoring tests the analyzer sweep time is set to > 20 seconds and the oscilloscope is configured with a data record length of 10 seconds for the short duration and frequency hopping waveforms, 20 seconds for the long duration waveforms. Both instruments are set for a single acquisition sequence. The analyzer is triggered 500ms before the start of the waveform and the oscilloscope is triggered directly by the modulating pulse train. Timing measurements for aggregate channel transmission time and channel move time are made from the oscilloscope data, with the end of the waveform clearly identified by the pulse train on one trace. The analyzer trace data is used to confirm that the last transmission occurred within the 10-second record of the Page 10 of 28 Report No.: STS1708150W03 oscilloscope. If necessary the record length of the oscilloscope is expanded to capture the last transmission on the channel prior to the channel move. Channel availability check time timing plots are made using the analyzer. The analyzer is triggered at start of the EUT’s channel availability check and used to verify that the EUT does not transmit when radar is applied during the check time. The analyzer detector and oscilloscope sampling mode is set to peak detect for all plots. 2.4 EQUIPMENTS LIST FOR ALL TEST ITEMS Kind of Equipment Manufacturer Type No. Serial No. Last calibration Calibrated until Signal Generator Agilent N5182A MY46240556 2016.10.23 2017.10.22 Signal Analyzer Agilent N9020A MY49100060 2016.10.23 2017.10.22 Coupler Rio tinto in overseas ZFSC-2-11 15542 2016.10.23 2017.10.22 Coupler Rio tinto in overseas ZN2PD-9G SF078500430 2016.10.23 2017.10.22 Attenuator HP 8494B DC-18G 2016.10.23 2017.10.22 Wireless N600 Dual Band Gigabit Cloud Router D-Link DIR-826L N.C.R N.C.R N.C.R Note: Wireless N600 Dual Band Gigabit Cloud Router is the master that was used in the testing, which FCC ID is KA2IR826LMO1 Page 11 of 28 3. DFS PARAMETERS 3.1 DFS PARAMETERS Table 1: Applicability of DFS Requirements Prior to Use of a Channel Table 2: Applicability of DFS requirements during normal operation Report No.: STS1708150W03 Page 12 of 28 Report No.: STS1708150W03 Table 3: DFS Detection Thresholds for Master Devices and Client Devices With Radar Detection Table 4: DFS Response Requirement Values Page 13 of 28 Table 5 – Short Pulse Radar Test Waveforms Table 5a - Pulse Repetition Intervals Values for Test A Report No.: STS1708150W03 Page 14 of 28 Report No.: STS1708150W03 The aggregate is the average of the percentage of successful detections of Short Pulse Radar Types 1-4. For example, the following table indicates how to compute the aggregate of percentage of successfuldetections. Long Pulse Radar Test Waveform Table 6 – Long Pulse Radar Test Waveform Figure 1 provides a graphical representation of the Long Pulse Radar Test Waveform. Table 7 – Frequency Hopping Radar Test Waveform Page 15 of 28 Report No.: STS1708150W03 3.2 RADAR WAVEFORM CALIBRATION 1. The following equipment setup was used to calibrate the conducted Radar Waveform. A spectrum analyzer was used to establish the test signal level for each radar type. 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) mode at the frequency of the Radar Waveform generator. Peak detection was utilized. The spectrum analyzer resolution bandwidth (RBW) and video bandwidth (VBW) were set to 3 MHz. The signal generator amplitude was set so that the power level measured at the spectrum analyzer was -62dBm and -64dBm. Calibration signal result Type 1 Page 16 of 28 Type 2 Type 3 Report No.: STS1708150W03 Page 17 of 28 Type 4 Type 5 Report No.: STS1708150W03 Page 18 of 28 Type 6 Report No.: STS1708150W03 Page 19 of 28 Report No.: STS1708150W03 3.3 DFS –TEST RESULTS 3.3.1 TEST RESULTS– FCC Part 15.407 CLIENT DEVICE FCC Part 15.407 Client Device Test Result Summary Description Radar Type Channel closing transmission time Channel move time Radar Frequency Measured Value 5300 20ms 5290 20ms 5300 4.076s 5290 4.089s Requirement Test Data Status <260ms 3.3.4 Complies <10s 3.3.4 Complies Requirement Test Data Status <260ms 3.3.4 Complies <10s 3.3.4 Complies FCC Part 15.407 Client Device Test Result Summary Description Radar Type Channel closing transmission time Channel move time Radar Frequency Measured Value 5580 20ms 5610 20ms 5580 6.028s 5610 6.054s Notes: 1) Tests were performed using the conduction test method. 2) Channel availability check, detection threshold and non-occupancy period are not applicable to client devices. 3.3.2 DFS MEASUREMENT METHODS a. DFS – CHANNEL CLOSING TRANSMISSION TIME AND CHANNEL MOVE TIME 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. 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. b.DFS – CHANNEL NON-OCCUPANCY AND VERIFICATION OF PASSIVE SCANNING Non-occupancy Period. A channel that has been flagged as containing a radar system, either by a channel availability check or in-service monitoring, is subject to a non-occupancy period of at least 30 minutes. The non-occupancy period starts at the time when the radar system is detected. c. CHANNEL AVAILABILITY CHECK TIME Page 20 of 28 Report No.: STS1708150W03 Channel Availability Check Time. A U-NII device shall check if there is a radar system already operating on the channel before it can initiate a transmission on a channel and when it has to move to a new channel. The U-NII device may start using the channel if no radar signal with a power level greater than the interference threshold values listed in paragraph (h)(2) of this section, is detected within 60 seconds. d. CONTROL (TPC) Compliance with the transmit power control requirements for devices is demonstrated through measurements showing multiple power levels and manufacturer statements explaining how the power control is implemented. e. DETECTION PROBABILITY / SUCCESS RATE 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. Minimum 100% of the U-NII 99% transmission power bandwidth. f. 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 g. 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: a) The data file must be of a type that is typical for the device (i.e., MPEG-2, MPEG-4, WAV, MP3, MP4, AVI, etc.) and must generally be transmitting in a streaming mode. b) Software to ping the client is permitted to simulate data transfer but must have random ping intervals. c) Timing plots are required with calculations demonstrating a minimum channel loading of approximately 17% or greater. For example, channel loading can be estimated by setting the spectrum analyzer for zero span and approximate the Time On/ (Time On + Off Time). This can be done with any appropriate channel BW and modulation type. 3.3.3 DFS CONDUCTION TEST METHOD Page 21 of 28 Report No.: STS1708150W03 a. The signal level of the simulated waveform is set to a reference level equal to the threshold level (plus 1dB if testing against FCC requirements). Lower levels may also be applied on request of the manufacturer. The signal level is verified by measuring the CW signal level at the coupling point to the RDD antenna port. The radar signal level is calculated from the measured level, R (dBm) and the lowest gain antenna assembly intended for use with the RDD If both master and client devices have radar detection capability then the radar level at the non RDD is verified to be at least 20dB below the threshold level to ensure that any responses are due to the RDD detecting radar. The antenna connected to the channel monitoring subsystem is positioned to allow both master and client transmissions to be observed, with the level of the EUT’s transmissions between 6 and 10dB higher than those from the other device. b.Set-up B is a set-up whereby the UUT is an RLAN device operating in slave mode, with or without RadarInterference Detection function. This set-up also contains an RLAN device operating in master mode. The radar test signals are injected into the master device. The UUT (slave device)is associated with the master device.Figure 5 shows an example for Set-up B. The set-up usedshall be documented in the test report. Page 22 of 28 Report No.: STS1708150W03 3.3.4 DFS Test Data 5250 – 5350 MHz (a)Channel move time & Channel Closing Transmission Time for Type 1 radar. Radar Signal EUT Transmission Channel Closing Transmission Time Note: Dwell (20 ms)= Sweep Time (20000 ms) / Sweep Point Bins (1000) Channel Closing Transmission Time (200 + 60 ms) = 200 + Number (1) X Dwell (20 ms) < 260ms (HT80) Channel move time & Channel Closing Transmission Time for Type 1 radar. Radar Signal Channel Closing Transmission Time EUT Transsmission Note: Dwell (20 ms)= Sweep Time (20000 ms) / Sweep Point Bins (1000) Channel Closing Transmission Time (200 + 20 ms) = 200 + Number (1) X Dwell (20 ms) < 260ms Page 23 of 28 Report No.: STS1708150W03 (a) Channel Non-Occupancy Period for Type 1 radar. Radar Signal EUT Transmission Non-Occupancy Period 30min (HT80) Channel Non-Occupancy Period for Type 1 radar. Radar Signal EUT Transmision Non-Occupancy Period 30min Page 24 of 28 Report No.: STS1708150W03 5470 – 5725 MHz (a)Channel move time & Channel Closing Transmission Time for Type 1 radar. Radar Signal EUT Transmission Channel Closing Transmission Time Note: Dwell (20 ms)= Sweep Time (20000 ms) / Sweep Point Bins (1000) Channel Closing Transmission Time (200 + 60 ms) = 200 + Number (1) X Dwell (20 ms) < 260ms (HT80) Channel move time & Channel Closing Transmission Time for Type 1 radar. Radar Signal EUT Transsmission Channel Closing Transmission Time Note: Dwell (20 ms)= Sweep Time (20000 ms) / Sweep Point Bins (1000) Channel Closing Transmission Time (200 + 20 ms) = 200 + Number (1) X Dwell (20 ms) < 260ms Page 25 of 28 Report No.: STS1708150W03 (a) Channel Non-Occupancy Period for Type 1 radar. Radar Signal EUT Transmission Non-Occupancy Period 30min (HT80) Channel Non-Occupancy Period for Type 1 radar. Radar Signal EUT Transmision Non-Occupancy Period 30min Page 26 of 28 Channel Loading-20MHz 17%
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