Shenzhen Huaxia Testing Technology Co., Ltd.
1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District, Shenzhen, China
Telephone: +86-755-26648640 | Fax: +86-755-26648637 | Website: www.cqa-cert.com
Report Template Version: V05 | Report Template Revision Date: 2021-11-03
Test Report
| Report No.: | CQASZ20230801527E-02 |
|---|---|
| Applicant: | ShenZhen Zeblaze Smart Company Limited |
| Address of Applicant: | Room 210, Yuan Xiong Building, Tongxing Road 26, Ban tian Street, Longgang District, Shenzhen, Guangdong, China |
| Equipment Under Test (EUT): |
|
*In the configuration tested, the EUT complied with the standards specified above.
Tested By: (Lewis Zhou)
Reviewed By: (Timo Lei)
Approved By: (Jack Ai)
The test report is effective only with both signature and specialized stamp. The result(s) shown in this report refer only to the sample(s) tested. Without written approval of CQA, this report can't be reproduced except in full.
1 Version
Revision History Of Report:
| Report No. | Version | Description | Issue Date |
|---|---|---|---|
| CQASZ20230801527E-02 | Rev.01 | Initial report | 2023-09-01 |
2 Test Summary
| Test Item | Test Requirement | Test method | Result |
|---|---|---|---|
| Antenna Requirement | 47 CFR Part 15, Subpart C Section 15.203/15.247 (c) | ANSI C63.10 2013 | PASS |
| AC Power Line Conducted Emission | 47 CFR Part 15, Subpart C Section 15.207 | ANSI C63.10 2013 | PASS |
| Conducted Peak Output Power | 47 CFR Part 15, Subpart C Section 15.247 (b)(1) | ANSI C63.10 2013 | PASS |
| 6dB Occupied Bandwidth | 47 CFR Part 15, Subpart C Section 15.247 (a)(2) | ANSI C63.10 2013 | PASS |
| Power Spectral Density | 47 CFR Part 15, Subpart C Section 15.247 (e) | ANSI C63.10 2013 | PASS |
| Band-edge for RF Conducted Emissions | 47 CFR Part 15, Subpart C Section 15.247(d) | ANSI C63.10 2013 | PASS |
| RF Conducted Spurious Emissions | 47 CFR Part 15, Subpart C Section 15.247(d) | ANSI C63.10 2013 | PASS |
| Radiated Spurious Emissions | 47 CFR Part 15, Subpart C Section 15.205/15.209 | ANSI C63.10 2013 | PASS |
| Restricted bands around fundamental frequency (Radiated Emission) | 47 CFR Part 15, Subpart C Section 15.205/15.209 | ANSI C63.10 2013 | PASS |
3 Contents
The document contains detailed information across various sections including General Information, Test Results and Measurement Data, and Photographs. Refer to the original document for the full table of contents.
4 General Information
4.1 Client Information
| Applicant: | ShenZhen Zeblaze Smart Company Limited |
|---|---|
| Address of Applicant: | Room 210, Yuan Xiong Building, Tongxing Road 26, Ban tian Street, Longgang District, Shenzhen, Guangdong, China |
| Manufacturer: | ShenZhen Zeblaze Smart Company Limited |
| Address of Manufacturer: | Room 210, Yuan Xiong Building, Tongxing Road 26, Ban tian Street, Longgang District, Shenzhen, Guangdong, China |
| Factory: | ShenZhen Zeblaze Smart Company Limited |
| Address of Factory: | Room 210, Yuan Xiong Building, Tongxing Road 26, Ban tian Street, Longgang District, Shenzhen, Guangdong, China |
4.2 General Description of EUT
| Product Name: | Smart Watch |
|---|---|
| Model No.: | GTR 3Pro, Stratos 3, Ares 3Pro, Btalk 2Lite, Vibe 7Pro |
| Test Model No.: | GTR 3Pro |
| Trade Mark: | Zeblaze |
| Software Version: | V1.07 |
| Hardware Version: | T5170V2.0 |
| Operation Frequency: | 2402MHz~2480MHz |
| Bluetooth Version: | V5.2 |
| Modulation Type: | GFSK |
| Transfer Rate: | 1Mbps |
| Number of Channel: | 40 |
| Product Type: | Mobile, Portable, Fix Location |
| Test Software of EUT: | RTLBTAPP |
| Antenna Type: | Internal antenna |
| Antenna Gain: | -0.48dBi |
| EUT Power Supply: | Li-ion battery DC 3.7V 260mAh, Charge by DC 5V for adapter |
| Simultaneous Transmission: | Simultaneous TX is supported and evaluated in this report. Simultaneous TX is not supported. |
Operation Frequency Table
| Channel | Frequency | Channel | Frequency | Channel | Frequency | Channel | Frequency |
|---|---|---|---|---|---|---|---|
| 0 | 2402MHz | 10 | 2422MHz | 20 | 2442MHz | 30 | 2462MHz |
| 1 | 2404MHz | 11 | 2424MHz | 21 | 2444MHz | 31 | 2464MHz |
| 2 | 2406MHz | 12 | 2426MHz | 22 | 2446MHz | 32 | 2466MHz |
| 3 | 2408MHz | 13 | 2428MHz | 23 | 2448MHz | 33 | 2468MHz |
| 4 | 2410MHz | 14 | 2430MHz | 24 | 2450MHz | 34 | 2470MHz |
| 5 | 2412MHz | 15 | 2432MHz | 25 | 2452MHz | 35 | 2472MHz |
| 6 | 2414MHz | 16 | 2434MHz | 26 | 2454MHz | 36 | 2474MHz |
| 7 | 2416MHz | 17 | 2436MHz | 27 | 2456MHz | 37 | 2476MHz |
| 8 | 2418MHz | 18 | 2438MHz | 28 | 2458MHz | 38 | 2478MHz |
| 9 | 2420MHz | 19 | 2440MHz | 29 | 2460MHz | 39 | 2480MHz |
Note: For testing, the lowest (CH0: 2402MHz), middle (CH19: 2440MHz), and highest (CH39: 2480MHz) channels were selected.
4.3 Additional Instructions
EUT Test Software Settings:
- Mode: Special software used, accessed via engineering command *#*#3646633#*#*.
- EUT Power level: Class2 (built-in parameters, not adjustable).
Test software was used to set the EUT to transmit continuously on the lowest, middle, and highest frequencies.
| Mode | Channel | Frequency(MHz) |
|---|---|---|
| GFSK | CH0 | 2402 |
| GFSK | CH19 | 2440 |
| GFSK | CH39 | 2480 |
4.4 Test Environment
| Operating Environment: | Temperature: 24.5°C, Humidity: 59% RH, Atmospheric Pressure: 1009mbar |
|---|---|
| Test Mode: | Continuous transmission on lowest, middle, and highest frequencies using test software. |
4.5 Description of Support Units
The EUT was tested with the following support equipment:
- Support equipment: Adapter (Model No: /, Manufacturer: /, Certification: /, Supplied by: CQA)
- Cable: (Description: /, Manufacturer: /, Cable Type/Length: /, Supplied by: /)
4.6 Statement of the measurement uncertainty
The measurement uncertainty was calculated according to CISPR 16-4 and documented in the Shenzhen Huaxia Testing Technology Co., Ltd. quality system (ISO/IEC 17025). The best measurement capabilities are reported as follows:
| No. | Item | Uncertainty |
|---|---|---|
| 1 | Radiated Emission (Below 1GHz) | 5.12dB |
| 2 | Radiated Emission (Above 1GHz) | 4.60dB |
| 3 | Conducted Disturbance (0.15~30MHz) | 3.34dB |
| 4 | Radio Frequency | 3×10-8 |
| 5 | Duty cycle | 0.6 % |
| 6 | Occupied Bandwidth | 1.1% |
| 7 | RF conducted power | 0.86dB |
| 8 | RF power density | 0.74 |
| 9 | Conducted Spurious emissions | 0.86dB |
| 10 | Temperature test | 0.8°C |
| 11 | Humidity test | 2.0% |
| 12 | Supply voltages | 0.5 % |
| 13 | Frequency Error | 5.5 Hz |
4.7 Test Location
All tests were performed at Shenzhen Huaxia Testing Technology Co., Ltd., located at 1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District, Shenzhen, China.
4.8 Test Facility
- A2LA Accredited: Shenzhen Huaxia Testing Technology Co., Ltd., Shenzhen EMC Laboratory (Certificate No. 4742.01).
- FCC Registration: Shenzhen Huaxia Testing Technology Co., Ltd., Shenzhen EMC Laboratory is registered with the FCC (Registration No.: 522263).
4.9 Deviation from Standards
None.
4.10 Other Information Requested by the Customer
None.
4.11 Equipment List
| Test Equipment | Manufacturer | Model No. | Instrument No. | Calibration Date | Calibration Due Date |
|---|---|---|---|---|---|
| EMI Test Receiver | R&S | ESR7 | CQA-005 | 2022/09/09 | 2023/09/08 |
| Spectrum analyzer | R&S | FSU26 | CQA-038 | 2022/09/09 | 2023/09/08 |
| Spectrum analyzer | R&S | FSU40 | CQA-075 | 2022/09/09 | 2023/09/08 |
| Preamplifier | MITEQ | AFS4-00010300-18-10P-4 | CQA-035 | 2022/09/09 | 2023/09/08 |
| Preamplifier | MITEQ | AMF-6D-02001800-29-20P | CQA-036 | 2022/09/09 | 2023/09/08 |
| Preamplifier | EMCI | EMC184055SE | CQA-089 | 2022/09/09 | 2023/09/08 |
| Loop antenna | Schwarzbeck | FMZB1516 | CQA-060 | 2021/09/16 | 2024/09/15 |
| Bilog Antenna | R&S | HL562 | CQA-011 | 2021/09/16 | 2024/09/15 |
| Horn Antenna | R&S | HF906 | CQA-012 | 2021/09/16 | 2024/09/15 |
| Horn Antenna | Schwarzbeck | BBHA 9170 | CQA-088 | 2021/09/16 | 2024/09/15 |
| Coaxial Cable (Above 1GHz) | CQA | N/A | C007 | 2022/09/09 | 2023/09/08 |
| Coaxial Cable (Below 1GHz) | CQA | N/A | C013 | 2022/09/09 | 2023/09/08 |
| RF cable(9KHz~40GHz) | CQA | RF-01 | CQA-079 | 2022/09/09 | 2023/09/08 |
| Antenna Connector | CQA | RFC-01 | CQA-080 | 2022/09/09 | 2023/09/08 |
| Power Sensor | KEYSIGHT | U2021XA | CQA-30 | 2022/09/09 | 2023/09/08 |
| N1918A Power Analysis Manager Power Panel | Agilent | N1918A | CQA-074 | 2022/09/09 | 2023/09/08 |
| Power meter | R&S | NRVD | CQA-029 | 2022/09/09 | 2023/09/08 |
| Power divider | MIDWEST | PWD-2533-02-SMA-79 | CQA-067 | 2022/09/09 | 2023/09/08 |
| EMI Test Receiver | R&S | ESR7 | CQA-005 | 2022/09/09 | 2023/09/08 |
| LISN | R&S | ENV216 | CQA-003 | 2022/09/09 | 2023/09/08 |
| Coaxial cable | CQA | N/A | CQA-C009 | 2022/09/09 | 2023/09/08 |
| DC power | KEYSIGHT | E3631A | CQA-028 | 2022/09/09 | 2023/09/08 |
Note: A temporary antenna connector was used for conducted tests.
5 Test Results and Measurement Data
5.1 Antenna Requirement
Standard requirement: 47 CFR Part 15C Section 15.203 /247(c)
15.203 requirement: The intentional radiator must use an antenna furnished by the responsible party, with a permanently attached antenna or a unique coupling. Standard antenna jacks or connectors are prohibited.
15.247(b)(4) requirement: For antennas with directional gains exceeding 6 dBi, the conducted output power must be reduced accordingly.
EUT Antenna: The antenna is internal. The connection is permanently attached, satisfying the requirement.
5.2 Conducted Emissions
Test Requirement: 47 CFR Part 15C Section 15.207
Test Method: ANSI C63.10: 2013
Test Frequency Range: 150kHz to 30MHz
Limits:
| Frequency range (MHz) | Limit (dBuV) Quasi-peak | Limit (dBuV) Average |
|---|---|---|
| 0.15-0.5 | 66 to 56* | 56 to 46* |
| 0.5-5 | 56 | 46 |
| 5-30 | 60 | 50 |
*Decreases with the logarithm of the frequency.
Test Procedure: Conducted voltage disturbance was measured in a shielded room using LISNs. The EUT was placed on a non-metallic table 0.8m above the ground reference plane. The test involved varying the position of the EUT and interface cables to find maximum emissions.
Test Setup Diagram Description: A diagram shows a shielding room with the EUT, AE (Associated Equipment), LISN1, LISN2, and Test Receiver connected to AC Mains via LISNs. The EUT is placed on a table above a ground reference plane.
Test Mode: Charging mode
Test Voltage: AC 120V/60Hz
Test Results: Pass
Measurement Data (Live line): Plots and tables show conducted emissions levels below the limits across the tested frequency range.
Measurement Data (Neutral line): Plots and tables show conducted emissions levels below the limits across the tested frequency range.
5.3 Conducted Peak Output Power
Test Requirement: 47 CFR Part 15C Section 15.247 (b)(1)
Test Method: ANSI C63.10 2013
Limit: 30dBm
Test Mode: Transmitting with GFSK modulation.
Test Results: Pass
Measurement Data (GFSK mode, 1Mbps):
| Test channel | Peak Output Power (dBm) | Limit (dBm) | Result |
|---|---|---|---|
| Lowest | 1.23 | 30.00 | Pass |
| Middle | 1.99 | 30.00 | Pass |
| Highest | 1.81 | 30.00 | Pass |
Test Setup Diagram Description: A diagram shows a Spectrum Analyzer connected to the EUT via a non-conducted path on a table above a ground reference plane.
Spectrum Plots: Plots for 2402 MHz, 2440 MHz, and 2480 MHz show the peak output power well within the 30 dBm limit.
5.4 6dB Occupy Bandwidth
Test Requirement: 47 CFR Part 15C Section 15.247 (a)(2)
Test Method: ANSI C63.10 2013
Limit: ≥ 500 kHz
Test Results: Pass
Measurement Data (GFSK mode, 1Mbps):
| Test channel | 6dB Occupy Bandwidth (MHz) | Limit (kHz) | Result |
|---|---|---|---|
| Lowest | 0.66 | ≥500 | Pass |
| Middle | 0.66 | ≥500 | Pass |
| Highest | 0.66 | ≥500 | Pass |
Test Setup Diagram Description: Similar to Conducted Peak Output Power setup, using a Spectrum Analyzer.
Spectrum Plots: Plots for 2402 MHz, 2440 MHz, and 2480 MHz show the 6dB bandwidths measured at approximately 0.66 MHz, exceeding the 500 kHz limit.
5.5 Power Spectral Density
Test Requirement: 47 CFR Part 15C Section 15.247 (e)
Test Method: ANSI C63.10 2013
Limit: ≤8.00dBm/3kHz
Test Mode: Transmitting with GFSK modulation.
Test Results: Pass
Measurement Data (GFSK mode, 1Mbps):
| Test channel | Power Spectral Density (dBm/3kHz) | Limit (dBm/3kHz) | Result |
|---|---|---|---|
| Lowest | -14.88 | ≤8.00 | Pass |
| Middle | -14.04 | ≤8.00 | Pass |
| Highest | -14.34 | ≤8.00 | Pass |
Spectrum Plots: Plots for 2402 MHz, 2440 MHz, and 2480 MHz show power spectral density levels significantly below the 8.00 dBm/3kHz limit.
5.6 Band-edge for RF Conducted Emissions
Test Requirement: 47 CFR Part 15C Section 15.247 (d)
Test Method: ANSI C63.10 2013
Limit: RF power must be at least 20 dB below the highest level within the 100 kHz bandwidth of the band.
Test Mode: Transmitting with GFSK modulation.
Test Results: Pass
| TestMode | ChName | Freq(MHz) | RefLevel [dBm] | Result[dBm] | Limit[dBm] | Verdict |
|---|---|---|---|---|---|---|
| BLE_1M | Low | 2402 | 0.68 | -48.2 | ≤-19.32 | PASS |
| BLE_1M | High | 2480 | 1.22 | -46.65 | ≤-18.78 | PASS |
Spectrum Plots: Plots for the low (2402 MHz) and high (2480 MHz) band edges show emissions well below the specified limits.
5.7 Spurious RF Conducted Emissions
Test Requirement: 47 CFR Part 15C Section 15.247 (d)
Test Method: ANSI C63.10 2013
Limit: RF power must be at least 20 dB below the highest level within the 100 kHz bandwidth of the band.
Test Mode: Transmitting with GFSK modulation.
Test Results: Pass
Spectrum Plots: Plots covering frequency ranges from 30 MHz to 26.5 GHz show spurious emissions are significantly below the limits.
5.8 Radiated Spurious Emission & Restricted Bands
5.8.1 Spurious Emissions
Test Requirement: 47 CFR Part 15C Section 15.209 and 15.205
Test Method: ANSI C63.10 2013
Test Site: 3m Semi-Anechoic Chamber
Limits:
| Frequency (MHz) | Field strength (microvolt/meter) | Limit (dBuV/m) | Remark | Measurement distance (m) |
|---|---|---|---|---|
| 0.009MHz-0.490MHz | 2400/F(kHz) | - | - | 300 |
| 0.490MHz-1.705MHz | 24000/F(kHz) | - | - | 30 |
| 1.705MHz-30MHz | 30 | - | - | 30 |
| 30MHz-88MHz | 100 | 40.0 | Quasi-peak | 3 |
| 88MHz-216MHz | 150 | 43.5 | Quasi-peak | 3 |
| 216MHz-960MHz | 200 | 46.0 | Quasi-peak | 3 |
| 960MHz-1GHz | 500 | 54.0 | Quasi-peak | 3 |
| Above 1GHz | 500 | 54.0 | Average | 3 |
Note: Peak limits are 20 dB above average limits.
Test Setup Diagram Description:
- Below 30MHz: EUT on a 0.8m rotating table in a semi-anechoic chamber, 3m from a receiver antenna.
- 30MHz to 1GHz: EUT on a 0.8m rotating table in a semi-anechoic chamber, 3m from a horn antenna (variable height 1m-4m).
- Above 1GHz: EUT on a 1.5m rotating table in a semi-anechoic chamber, 3m from a horn antenna (variable height 1m-4m).
Test Procedure: Tests were conducted by rotating the table 360 degrees and varying antenna height (1m-4m) to find maximum emissions. Measurements were performed in horizontal and vertical polarizations. Exploratory tests identified the worst-case channel (highest channel for below 1GHz) and modulation (GFSK 1Mbps). Peak and average limits were considered.
Radiated Emission below 1GHz (Worst Case):
- Horizontal Polarization: Plots and tables show emissions below limits for frequencies between 30MHz and 1GHz. Key peaks identified include at 114.92MHz (20.83 dBuV/m), 237.48MHz (21.56 dBuV/m), 311.09MHz (23.98 dBuV/m), 366.82MHz (25.07 dBuV/m), 574.63MHz (30.53 dBuV/m), and 742.26MHz (32.71 dBuV/m).
- Vertical Polarization: Plots and tables show emissions below limits. Key peaks identified include at 44.28MHz (23.55 dBuV/m), 77.05MHz (19.22 dBuV/m), 121.98MHz (19.66 dBuV/m), 252.95MHz (22.22 dBuV/m), 369.40MHz (25.05 dBuV/m), and 501.18MHz (33.80 dBuV/m).
Transmitter Emission above 1GHz:
Measurements were performed for Lowest, Middle, and Highest channels. Plots and tables show emissions below the 74 dBuV/m limit.
| Frequency (MHz) | Meter Reading (dBμV) | Factor (dB) | Emission Level (dBμV/m) | Limits (dBμV/m) | Over (dB) | Detector Type | Ant. Pol. H/V |
|---|---|---|---|---|---|---|---|
| Lowest Channel (2402MHz) | |||||||
| 2390 | 53.73 | -9.2 | 44.53 | 74 | -29.47 | Peak | H |
| 2400 | 55.96 | -9.39 | 46.57 | 74 | -27.43 | Peak | H |
| 4804 | 53.58 | -4.33 | 49.25 | 74 | -24.75 | Peak | H |
| 7206 | 50.49 | 1.01 | 51.50 | 74 | -22.50 | Peak | H |
| 2390 | 54.84 | -9.2 | 45.64 | 74 | -28.36 | Peak | V |
| 2400 | 52.26 | -9.39 | 42.87 | 74 | -31.13 | Peak | V |
| 4804 | 54.11 | -4.33 | 49.78 | 74 | -24.22 | Peak | V |
| 7206 | 49.31 | 1.01 | 50.32 | 74 | -23.68 | Peak | V |
| Middle Channel (2440MHz) | |||||||
| 4880 | 51.30 | -4.11 | 47.19 | 74 | -26.81 | peak | H |
| 7320 | 48.47 | 1.51 | 49.98 | 74 | -24.02 | peak | H |
| 4880 | 53.64 | -4.11 | 49.53 | 74 | -24.47 | peak | V |
| 7320 | 48.77 | 1.51 | 50.28 | 74 | -23.72 | peak | V |
| Highest Channel (2480MHz) | |||||||
| 2483.5 | 56.79 | -9.29 | 47.50 | 74 | -26.50 | Peak | H |
| 4960 | 51.57 | -4.04 | 47.53 | 74 | -26.47 | Peak | H |
| 7440 | 49.49 | 1.57 | 51.06 | 74 | -22.94 | Peak | H |
| 2483.5 | 58.20 | -9.29 | 48.91 | 74 | -25.09 | Peak | V |
| 4960 | 50.26 | -4.04 | 46.22 | 74 | -27.78 | Peak | V |
| 7440 | 48.42 | 1.57 | 49.99 | 74 | -24.01 | Peak | V |
Remark: Field strength is calculated using Antenna Factor, Cable Factor, and Preamplifier. Spurious emissions above 10GHz and below 30MHz were very low. Peak measurements are shown, not exceeding average limits by more than 20 dB.
6 Photographs - EUT Test Setup
6.1 Radiated Spurious Emission
9kHz~30MHz Setup: Image shows the EUT placed on a turntable within a shielded room, with measurement equipment and antennas positioned for testing.
30MHz~1GHz Setup: Image shows the EUT on a turntable in a semi-anechoic chamber, with a horn antenna positioned at a distance for radiated emission testing.
