Realme Chongqing Mobile Telecommunications Corp., Ltd. RMX3951 2AUYFRMX3951 2AUYFRMX3951 rmx3951
Report No.: BL-SZ2460066-605
TEST REPORT
Applicant:
Address: Equipment Type: Model Name: Brand Name: FCC ID: Test Standard: Sample Arrival Date: Test Date: Date of Issue:
Realme Chongqing Mobile Telecommunications Corp., Ltd. No.178 Yulong Avenue, Yufengshan, Yubei District, Chongqing, China Mobile Phone
RMX3951
realme
2AUYFRMX3951 47 CFR Part 15 Subpart E (refer to section 3.1) Jun. 03, 2024
Jun. 04, 2024 - Jun. 05, 2024
Jul. 04, 2024
ISSUED BY: Shenzhen BALUN Technology Co., Ltd.
Tested by: Si Xiao
Checked by: Ye Hongji
Approved by: Liao Jianming (Technical Director)
_______________
_______________
_______________
Tel: +86-755-66850100
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Report No.: BL-SZ2460066-605
Version Rev. 01
Issue Date Jul. 04, 2024
Revision History
Revisions Initial Issue
TABLE OF CONTENTS
1 GENERAL INFORMATION ......................................................................................................... 4
1.1
Test Laboratory .............................................................................................................. 4
1.2
Test Location.................................................................................................................. 4
2 PRODUCT INFORMATION ......................................................................................................... 5
2.1
Applicant Information...................................................................................................... 5
2.2
Manufacturer Information ............................................................................................... 5
2.3
General Description for Equipment under Test (EUT) ................................................... 5
2.4
Technical Information ..................................................................................................... 6
3 SUMMARY OF TEST RESULTS................................................................................................. 7
3.1
Test Standards ............................................................................................................... 7
3.2
Test Verdict .................................................................................................................... 7
3.3
Measurement Uncertainty .............................................................................................. 7
4 GENERAL TEST CONFIGURATIONS ........................................................................................ 8
4.1
Test Environments ......................................................................................................... 8
4.2
Test Equipment List........................................................................................................ 8
4.3
Test Software List........................................................................................................... 8
4.4
Description of Test Setup ............................................................................................... 9
5 TEST ITEMS.............................................................................................................................. 10
5.1
DFS .............................................................................................................................. 10
ANNEX A TEST RESULT ............................................................................................................. 20
A.1
CHANNEL CLOSING TRANSMISSION AND CHANNEL MOVE TIME....................... 20
A.2
NON-OCCUPANCY PERIOD ...................................................................................... 24
ANNEX B TEST SETUP PHOTOS ............................................................................................... 26
ANNEX C EUT EXTERNAL PHOTOS .......................................................................................... 26
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Report No.: BL-SZ2460066-605 ANNEX D EUT INTERNAL PHOTOS ........................................................................................... 26
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Report No.: BL-SZ2460066-605
1 GENERAL INFORMATION
1.1 Test Laboratory
Name Address Phone Number
Shenzhen BALUN Technology Co., Ltd. Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China +86 755 6685 0100
1.2 Test Location
Name Location Accreditation Certificate
Shenzhen BALUN Technology Co., Ltd. Block B, 1/F, Baisha Science and Technology Park, Shahe Xi
Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1/F, Building B, Ganghongji High-tech Intelligent Industrial Park,
No. 1008, Songbai Road, Yangguang Community, Xili Sub-district, Nanshan District, Shenzhen, Guangdong Province, P. R. China The laboratory is a testing organization accredited by FCC as a accredited testing laboratory. The designation number is CN1196.
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2 PRODUCT INFORMATION
2.1 Applicant Information
Applicant Address
Realme Chongqing Mobile Telecommunications Corp., Ltd. No.178 Yulong Avenue, Yufengshan, Yubei District, Chongqing, China
2.2 Manufacturer Information
Manufacturer Address
Realme Chongqing Mobile Telecommunications Corp., Ltd. No.178 Yulong Avenue, Yufengshan, Yubei District, Chongqing, China
2.3 General Description for Equipment under Test (EUT)
EUT Name Model Name Under Test Series Model Name Description of Model name differentiation Hardware Version Software Version Dimensions (Approx.) Weight (Approx.) EUT ID IMEI Number
Mobile Phone RMX3951 N/A
N/A
11 realme UI 5.0 about 165.6×76.1×7.79(mm) about 190g S38 S38: IMEI1: 862456070034278 IMEI2:862456070034260
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2.4 Technical Information
2G Network GSM/GPRS/EDGE 850/1900 MHz
3G Network WCDMA/HSDPA/HSUPA/HSPA+ Band 2/4/5
4G Network LTE FDD Band 2/4/5/7/12/13/17/26/66
LTE TDD Band 38/41
LTE CA Uplink (UL): CA_7C, CA_38C, CA_41C
LTE Downlink (DL): CA_2C, CA_7B, CA_7C, CA_38C, CA_41C,
CA_41A-41A, CA_7A-7A, CA_2A-38A, CA_5A-41A, CA_5A-66A,
CA_7A-66A, CA_2A-2A, CA_2A-5A, CA_2A-7A, CA_2A-12A,
CA_4A-5A, CA_4A-7A, CA_5A-7A, CA_12A-66A, CA_66A-66A,
CA_4A-4A, CA_26A-41A, CA_5A-38A, CA_2A-4A, CA_38A-66A,
CA_26A-38A, CA_2A-66A, CA_7A-26A
5G Network
Network and Wireless connectivity
SA: NR n5/n7/n38/n41/n66 NSA UL (EN-DC): DC_7A_n5A, DC_66A_n5A, DC_2A_n7A, DC_4A_n7A, DC_5A_n7A, DC_7A_n7A, DC_66A_n7A,
DC_2A_n66A, DC_5A_n66A, DC_7A_n66A, DC_66A_n66A,
DC_2A_n38A, DC_4A_n38A, DC_5A_n38A, DC_38A_n38A,
DC_66A_n38A, DC_2A_n41A, DC_4A_n41A, DC_26A_n41A,
DC_41A_n41A, DC_66A_n41A
DL(EN-DC): DC_7C_n5A, DC_7C_n66A, DC_5A-66A_n66A,
DC_7A-66A_n66A, DC_2A-5A_n66A, DC_5A-7A_n7A, DC_5A-
7A_n66A, DC_66A-66A_n5A, DC_66A-66A_n7A
NR CA Downlink (DL): CA_n5A-n7A, CA_n7B
Bluetooth (BR+EDR+BLE)
2.4G WIFI 802.11b, 802.11g, 802.11n(HT20/40) and VHT(20/40)
5G WIFI 802.11a, 802.11n(HT20/40) and 802.11ac(VHT20/40/80)
U-NII-1/2A/2C/3, GPS, GLONASS, BDS, Galileo, NFC
The requirement for the following technical information of the EUT was tested in this report:
Frequency Range
5250 MHz to 5350 MHz, 5470 MHz to 5725 MHz
Mobile
Product Type
Portable
Fix Location
Maximum Output Power
5250 MHz to 5350 MHz: 32.06 mW 5470 MHz to 5725 MHz: 13.65 mW
Antenna Type
IFA Antenna
Antenna Gain
5250 MHz to 5350 MHz: -1.56 dBi 5470 MHz to 5725 MHz: -0.10 dBi
Note: This device (Client) is without radar detection, then the manufacturer statement
confirming that information regarding the parameters of the detected Radar Waveforms is not
available to the end user. And the device doesn't have Ad Hoc mode on DFS frequency band.
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Report No.: BL-SZ2460066-605
3 SUMMARY OF TEST RESULTS
3.1 Test Standards
No.
Identity
Document Title
1 47 CFR Part 15 Subpart E Unlicensed National Information Infrastructure Devices
2
KDB Publication 905462 D02v02
UNII DFS Compliance Procedures New Rules
3
KDB Publication 905462 D03v01r02
UNII Clients Without Radar Detection New Rules
4
KDB Publication 789033 D02v02r01
Guidelines for Compliance Testing of Unlicensed National Information Infrastructure (U-NII) Devices Part 15, Subpart E
3.2 Test Verdict
No.
Description
1
Channel Move Time
2 Channel Closing Transmission Time
3
Non- Occupancy Period
FCC Part No. 15.407 15.407 15.407
Verdict Pass Pass Pass
Remark Applicable Applicable Applicable
3.3 Measurement Uncertainty
The following measurement uncertainty levels have been estimated for tests performed on the EUT as specified in CISPR 16-4-2.This uncertainty represents an expanded uncertainty expressed at approximately the 95% confidence level using a coverage factor of k=2.
Parameters Occupied Channel Bandwidth RF output power, conducted Power Spectral Density, conducted Unwanted Emissions, conducted
All emissions, radiated Temperature Humidity
Uncertainty 2.8%
1.28 dB 1.30 dB 1.84 dB 5.36 dB 0.8°C
4%
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4 GENERAL TEST CONFIGURATIONS
4.1 Test Environments
During the measurement, the normal environmental conditions were within the listed ranges:
Relative Humidity Atmospheric Pressure Temperature
Working Voltage of the EUT
61% to 67% 100 kPa to 102 kPa NT (Normal Temperature) LT (Low Temperature) HT (High Temperature) NV (Normal Voltage) LV (Low Voltage) HV (High Voltage)
+22.1 to +22.9 0.0 +35 3.89 V 3.40 V 4.48 V
4.2 Test Equipment List
Description Spectrum Analyzer
Signaling Unit Vector Signal
Generator Signal Generator Switch Unit with
OSPB157
Manufacturer ROHDE&SCHWARZ ROHDE&SCHWARZ
Model FSV-40 CMW270
ROHDE&SCHWARZ SMBV100A
ROHDE&SCHWARZ SMB100A
ROHDE&SCHWARZ OSP120
Serial No. 101544 100607
260592
177746
101270
Cal. Date 2023.12.27 2024.05.08
2023.12.27
2024.05.08
2024.05.08
Cal. Due 2024.12.26 2025.05.07
2024.12.26
2025.05.07
2025.05.07
Master
Access Point Brand Name Model No. Serial No. FCC ID
SPEC.
ASUS RT-AC66U GBICGG000668 MSQ-RTAC66U The maximum EIRP is18.5dBm, Antenna Gain is 6.57dBi
4.3 Test Software List
Description BL410R
Manufacturer BALUN
Software Version V2.1.1.488
Serial No. N/A
Applicable test Setup The section 4.4.1
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4.4 Description of Test Setup
4.4.1 Conducted Test Setup Configuration
Client without Radar Detection Mode
The UUT is a U-NII Device operating in Client mode without radar detection. The radar test signals are injected into the Master Device.
(Diagram 1)
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Report No.: BL-SZ2460066-605
5 TEST ITEMS
5.1 DFS
5.1.1 U-NII DFS Rule Requirements
5.1.1.1 Working Mode and Required Test Items
The manufacturer shall state whether the UUT is capable of operating as a Master and/or a Client. If the UUT is capable of operating in more than one operating mode then each operating mode shall be tested separately. See tables 1 and 2 for the applicability of DFS requirements for each of the operational modes.
APPLICABILITY OF DFS REQUIREMENTS PRIOR TO USE A CHANNEL
Requirement
Non-Occupancy Period DFS Detection Threshold Channel Availability Check Time
Uniform Spreading U-NII Detection Bandwidth
Master
Operational Mode Client without radar
detection
Not required Not required Not required Not required
Client with radar detection
Not required Not required
APPLICABILITY OF DFS REQUIREMENTS DURING NORMAL OPERATION
Requirement
DFS Detection Threshold Channel Closing Transmission Time
Channel Move Time U-NII Detection Bandwidth
Master
Operational Mode
Client without radar Client with radar
detection
detection
Not required
Not required
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5.1.2Test Limits and Radar Signal Parameters
Detection Thereshold Values DFS DETECTION THRESHOLDS FOR MASTER DEVICES AND CLIENT DEVICES WITH RADAR DETECTION
Maximum Transmit Power
Value (See Note 1 & 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.
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 Note 1&2.
U-NII Detection Bandwidth
100% of the UNII transmission 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 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.
Note 3: During the U-NII Detection Bandwidth detection test, radar type 1 is used and for each frequency step the minimum percentage of detection is 90 percent. Measurements are performed with no data traffic.
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Parameters of DFS Test Signals
Step intervals of 0.1 microsecond for Pulse Width, 1 microsecond for PRI, 1 MHz for chirp width and 1 for the number of pulses will be utilized for the random determination of specific test waveforms.
SHORT PULSE RADAR TEST WAVEFORMS
Radar Type
Pulse Width
(µsec)
PRI (µsec)
0
1
1428
Test A: 15 unique PRI values randomly selected from the list
of 23 PRI values in Table 5a
Test B: 15 unique PRI values
1
1 randomly selected within the
range of 518-3066 sec, with a
minimum increment of 1 sec,
excluding PRI values selected
in Test A
2 1-5
150-230
Number of Pulses 18
23-29
Minimum Percentage Minimum
of Successful
Number of
Detection
Trials
See Note
See Note
60%
30
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: Short Pulse Radar Type 0 should be used for the detection bandwidth test, channel move time, and channel closing time tests.
Radar Type
5
LONG PULSE RADAR TEST WAVEFORM
Pulse Width (µsec)
Chirp Width (MHz)
PRI (µsec)
Number of Pulses per
Burst
Number of Bursts
Minimum Percentage of
Successful Detection
50-100 5-20 1000-2000 1-3
8-20
80%
Minimum Number of
Trials
30
Radar Type
6
FREQUENCY HOPPING RADAR TEST WAVEFORM
Pulse Width
(µsec)
PRI (µsec)
Pulses per Hop
Hopping Rate
(kHz)
Hopping Sequence
Length
(msec)
Minimum Percentage of
Successful Detection
1
333
9
0.333
300
70%
Minimum Number of
Trials
30
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Report No.: BL-SZ2460066-605
5.1.2.1 Test Setup
See 4.4 for test setup description for the radiated test. The photo of test setup please refer to ANNEX B.
5.1.2.2 Test Procedure
DFS MEASUREMENT SYSTEM: A complete DFS Measurement System consists of two subsystems: (1) the Radar Signal Generating Subsystem and (2) the Traffic Monitoring Subsystem. The control PC is necessary for generating the Radar waveforms in Table 6, 7 and 8. The traffic monitoring subsystem is specified to the type of unit under test (UUT).
Conducted setup configuration of ADT DFS Measurement System
Control PC
Radar Signal Generating Subsystem
Spectrum Analyzer
Attenuator
C/S
Attenuator
Attenuator
C/S
Traffic Monitoring Subsystem
Support Unit
Master / Client with DFS function
The test transmission will always be from the Master Device to the Client Device. While the Client device is set up to associate with the Master device and play the MPEG file (6 Magic Hours) from Master device, the designated MPEG test file and instructions are located at: http://ntiacsd.ntia.doc.gov/dfs/.
CALIBRATION OF DFS DETECTION THRESHOLD LEVEL: The measured channel is 5500 MHz in 20MHz Bandwidth and 5530MHz in 80MHz Bandwidth. 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 Master antenna gain is 6.57dBi and required detection threshold is-54.43dBm (= -62 +1 +6.57)dBm. The calibrated conducted detection threshold level is set to -54.43 dBm.
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Report No.: BL-SZ2460066-605 Conducted setup configuration of Calibration of DFS Detection Threshold Level
Control PC
Spectrum Analyzer
50 Load (Terminator)
C/S
50 Load (Terminator)
Attenuator
Attenuator
Radar Signal Generating Subsystem
Attenuator
C/S
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Report No.: BL-SZ2460066-605 Radar Waveform Calibration Result
Radar Type 0 Calibration Plot (5290MHz)
Radar Type 1 test A Calibration Plot (5290MHz)
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Radar Type 2 Calibration Plot (5290MHz)
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Radar Type 4 Calibration Plot (5290MHz)
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Radar Type 6 Calibration Plot (5290MHz)
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5.1.2.3 Test Result
Please refer to ANNEX A.
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ANNEX A TEST RESULT
A.1 CHANNEL CLOSING TRANSMISSION AND CHANNEL MOVE TIME
Result of DFS Channel Shutdown
Note: The radar test signals are injected into the Master Device.
This test was investigated for different bandwidth (the lowest and the highest bandwidth).
Description
Operation Mode
Operation Channel
Value (s)
Limit
Channel Move Time
802.11a
52
3.458
10 s
Channel Closing
200 milliseconds + an aggregate
Transmission
802.11a
52
0.036
of 60 milliseconds over
Time
remaining 10 second period.
Channel Move Time
802.11a
100
3.825
10 s
Channel Closing
200 milliseconds + an aggregate
Transmission
802.11a
100
0.039
of 60 milliseconds over
Time
remaining 10 second period.
Channel Move Time
802.11ac (80 MHz)
58
3.632
10 s
Channel Closing Transmission Time
802.11ac (80 MHz)
58
0.034
200 milliseconds + an aggregate of 60 milliseconds over
remaining 10 second period.
Channel Move Time
802.11ac (80 MHz)
106
3.710
10 s
Channel Closing Transmission Time
802.11ac (80 MHz)
106
0.033
200 milliseconds + an aggregate of 60 milliseconds over
remaining 10 second period.
Test Verdict
Pass
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T0 denotes DFS test signal start generated on the channel. T1 denotes the end of the radar burst. T2 denotes the instant when the UUT has ceased all transmissions on the channel. The time difference between T1 and T2 shall be measured. This value (Channel Move Time) shall be noted and compared with the limit. The aggregate duration (Channel Closing Transmission Time) of all transmissions from the UUT on Chr during the Channel Move Time shall be compared to the limit.
DFS Test schematic graphic
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802.11a Channel 52
Level in dBm
0 -5 -10 -15 -20 -25 -30 -35
0
2
4
6
8
10
12
14
16
18
20
Time in s
802.11a Channel 100
5 0 -10 -20 -30
Level in dBm
0
2
4
6
8
10
12
14
16
18
20
Time in s
Tel: +86-755-66850100
E-mail: qc@baluntek.com
Page No. 22 / 27
Web: www.titcgroup.com
Template No.: TRP-FCC Part 15.407 (2022-01-12)
Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China
Report No.: BL-SZ2460066-605 802.11ac(80 MHz) Channel 58
Level in dBm
-20
-25
-30
-35
0
2
4
6
8
10
12
14
16
18
20
Time in s
802.11ac(80 MHz) Channel 106
Level in dBm
-20
-25
-30
-35
0
2
4
6
8
10
12
14
16
18
20
Time in s
Tel: +86-755-66850100
E-mail: qc@baluntek.com
Page No. 23 / 27
Web: www.titcgroup.com
Template No.: TRP-FCC Part 15.407 (2022-01-12)
Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China
Report No.: BL-SZ2460066-605
A.2 NON-OCCUPANCY PERIOD
Master was off. During the 30 minutes observation time, The UUT did not make any transmissions in the DFS band after UUT power up.
802.11a Channel 52
Level in dBm
-23 -23.5
-24 -24.5
-25 -25.5
-26
0
802.11a Channel 100
500
1000
Time in s
1500
1860
Level in dBm
-22 -23 -24 -25
0
500
1000
Time in s
1500
1860
Tel: +86-755-66850100
E-mail: qc@baluntek.com
Page No. 24 / 27
Web: www.titcgroup.com
Template No.: TRP-FCC Part 15.407 (2022-01-12)
Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China
Report No.: BL-SZ2460066-605 802.11ac(80 MHz) Channel 58
Level in dBm
-23.5 -24
-24.5 -25
-25.5 -26
0
500
802.11ac(80 MHz) Channel 106
1000 Time in s
Level in dBm
-23 -24 -25 -26
0
500
1000
Time in s
1500
1860
1500
1860
Tel: +86-755-66850100
E-mail: qc@baluntek.com
Page No. 25 / 27
Web: www.titcgroup.com
Template No.: TRP-FCC Part 15.407 (2022-01-12)
Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China
Report No.: BL-SZ2460066-605
ANNEX B TEST SETUP PHOTOS
Please refer the document "BL-SZ2460066-AR.PDF".
ANNEX C EUT EXTERNAL PHOTOS
Please refer the document "BL-SZ2460066-AW.PDF".
ANNEX D EUT INTERNAL PHOTOS
Please refer the document "BL-SZ2460066-AI.PDF".
Tel: +86-755-66850100
E-mail: qc@baluntek.com
Page No. 26 / 27
Web: www.titcgroup.com
Template No.: TRP-FCC Part 15.407 (2022-01-12)
Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China
Report No.: BL-SZ2460066-605
Statement
1. The laboratory guarantees the scientificity, accuracy and impartiality of the test, and is responsible for all the information in the report, except the information provided by the customer. The customer is responsible for the impact of the information provided on the validity of the results. 2. The report without China inspection body and laboratory Mandatory Approval (CMA) mark has no effect of proving to the society. 3. For the report with CNAS mark or A2LA mark, the items marked with "" are not within the accredited scope. 4. This report is invalid if it is altered, without the signature of the testing and approval personnel, or without the "inspection and testing dedicated stamp" or test report stamp. 5. The test data and results are only valid for the tested samples provided by the customer. 6. This report shall not be partially reproduced without the written permission of the laboratory. 7. Any objection shall be raised to the laboratory within 30 days after receiving the report.
--END OF REPORT--
Tel: +86-755-66850100
E-mail: qc@baluntek.com
Page No. 27 / 27
Web: www.titcgroup.com
Template No.: TRP-FCC Part 15.407 (2022-01-12)
Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China
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