WM524 WIFI Module Test Report DFS Shenzhen KeZhongLong Optoelectronic Technology Co., Ltd.

Shenzhen KeZhongLong Optoelectronic Technology Co., Ltd. WIFI Module

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:[email protected]
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
V1.0.3.0
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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Document ID3556373
Application IDtCcsXFLqzqRGiz0Qk+Xo2A==
Document DescriptionDFS Test Report
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeTest Report
Display FormatAdobe Acrobat PDF - pdf
Filesize140.41kB (1755109 bits)
Date Submitted2017-09-12 00:00:00
Date Available2017-09-12 00:00:00
Creation Date2017-09-07 01:52:32
Producing SoftwareMicrosoft Office Word 2007
Document Lastmod2017-09-07 01:52:32
Document TitleDFS Test Report
Document CreatorMicrosoft Office Word 2007

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Page Count                      : 28
Language                        : zh-CN
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Producer                        : Microsoft Office Word 2007
Creator                         : Microsoft Office Word 2007
Create Date                     : 2017:09:07 01:52:32
Modify Date                     : 2017:09:07 01:52:32

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