FCC TEST REPORT

Report Overview

Report No.: LCSA032423156EA

FCC ID: 2AZNY-TW310

This report details the compliance testing of the TONOR TW3A Wireless Microphone, conducted by Shenzhen LCS Compliance Testing Laboratory Ltd. The testing was performed according to FCC CFR 47 Part 15 C (15.249) and ANSI C63.10: 2013 standards.

Product Details

• Test Model: TW3A
• Additional Model Numbers: TW0A, TW1A, TW2A, TW4A, TW5A, TW7A, TW8A, TW8C, TW8E, TW9A (PCB board, structure, and internal components are identical)
• Product Type: WIRELESS MICROPHONE
• Power Supply: DC 3.0V by 2*AA Batteries
• Frequency Range: 902.8MHz ~ 914MHz
• Channel Spacing: 0.8MHz
• Channel Number: 15 channels
• Modulation Type: FM
• Antenna Description: Internal Antenna, 3.0dBi(Max.)

Key Dates

• Date of Receipt of Test Sample: April 04, 2023
• Date of Test: April 04, 2023 ~ April 21, 2023
• Date of Report/Issue: April 24, 2023

Organizations Involved

Prepared for: Fujian EastWest Lifewit Technology Co., LTD
Address: Rm 1201-1205, Bld 18, 2nd Phase of Innovation Park, no.7, Wulongjiang Mid-Ave, Fuzhou High-tech Zone, Fuzhou, Fujian Province China

Prepared by: Shenzhen LCS Compliance Testing Laboratory Ltd.
Address: 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China
Tel: +(86) 755-82591330 | E-mail: webmaster@lcs-cert.com | Web: www.lcs-cert.com

Manufacturer: Fujian EastWest Lifewit Technology Co., LTD

Factory: Enping Lesheng Electronics Technology Co., Ltd
Address: No. 6-1, Zone B, Private Investment and Foreign Investment Industrial Zone, Enping, Guangdong, China

Revision History

Summary of Test Results

The TONOR TW3A Wireless Microphone demonstrated compliance with the applied FCC Part 15 Subpart C §15.249 standards.

*Remark: N/A* - Not Applicable!!!

1. General Information

1.2. Support Equipment List

No specific support equipment details were provided beyond general descriptions.

1.3. External I/O

No specific external I/O details were provided beyond general descriptions.

1.4. Description of Test Facility

• NVLAP Accreditation Code: 600167-0
• FCC Designation Number: CN5024
• CAB Identifier: CN0071
• CNAS Registration Number: L4595
• Test Firm Registration Number: 254912
• The 3m-Semi anechoic test site fulfills CISPR 16-1-4 according to ANSI C63.4:2014 and CISPR 16-1-4:2010 SVSWR requirement for radiated emission above 1GHz.

1.5. Statement of the Measurement Uncertainty

The data and results in this document are true and accurate within the calibration limits. The manufacturer is solely responsible for continued compliance.

1.6. Measurement Uncertainty

(1). This uncertainty represents an expanded uncertainty expressed at approximately the 95% confidence level using a coverage factor of k=2.

1.7. Description of Test Modes

The EUT was tested under operating conditions in X, Y, Z positions, with the worst case found in the X position. All test modes were tested, but only the worst case results are recorded. A temporary antenna connector was used for conducted measurements.

Detail Channel Frequencies:

2. Test Methodology

All measurements were conducted with ANSI C63.10: 2013. Radiated testing was performed at a 3-meter antenna-to-EUT distance.

2.1. EUT Configuration

The EUT was configured to maximize emission characteristics in a continuous normal application.

2.2. EUT Exercise

The EUT operated in engineering mode to fix the TX frequency for measurements.

2.3. General Test Procedures

Conducted Emissions (N/A)

The EUT is placed on a turntable 0.8 m above ground plane. Measurements are performed in the 0.15 MHz to 30 MHz range using Quasi-peak and average detector modes.

Radiated Emissions

The EUT is placed on a turntable (0.8 m below 1GHz, 1.5 m above 1GHz). The turntable rotates 360 degrees. The receiving antenna varies from 1m to 4m in height. Exploratory measurements were made according to ANSI C63.10-2013.

2.4. Test Sample

Two samples were provided:

3. Connection Diagram of Test System

3.1. Justification

The system was configured for continuous transmit. The EUT transmits with a modulated signal at the lowest channel, moving to the next channel upon pressing the "up" button.

3.2. EUT Exercise Software

EUT will send test instruction packets.

3.3. Special Accessories

None.

3.4. Block Diagram/Schematics

Please refer to the related document for detailed block diagrams/schematics.

3.5. Equipment Modifications

Shenzhen LCS Compliance Testing Laboratory Ltd. has not made any modifications to the EUT.

3.6. Test Setup

Please refer to the test setup photo for visual details.

5. Antenna Requirement

5.1. Standard Applicable

According to § 15.203 and RSS-Gen, an intentional radiator must use an antenna furnished by the responsible party. A permanently attached antenna or one with a unique coupling is sufficient. Standard antenna jacks or electrical connectors are prohibited.

5.2. Antenna Connected Construction

The EUT uses an Internal Antenna with a maximum gain of 3.0dBi. The antenna cannot be replaced by the user, meeting FCC Part §15.203 antenna requirements.

5.3. Results

Compliance.

6. Power Line Conducted Emissions

6.1. Standard Applicable

According to §15.207 (a) & RSS-Gen § 8.8, conducted radio frequency voltage on the AC power line (150 kHz to 30 MHz) shall not exceed 250 microvolts. Limits decrease linearly with the logarithm of frequency in the 0.15 MHz to 0.50 MHz range.

*Decreasing linearly with the logarithm of the frequency.

6.2. Block Diagram of Test Setup

The test setup for conducted emissions involves the EUT connected to a Line Impedance Stabilization Network (LISN), which is then connected to an EMI receiver. A vertical reference plane is also part of the setup, ensuring proper grounding and measurement conditions.

6.3. Test Results

Not applicable.

7. Radiated Emission Measurement

7.1. Standard Applicable

According to FCC § 15.249, emissions radiated outside specified frequency bands (except harmonics) must be attenuated by at least 50 dB below the fundamental level or to the general radiated emission limits in §15.209, whichever is less stringent. For restricted bands (15.205(a)), 15.209(a) and 15.249 limits apply.

According to RSS-210 B.10, fundamental and harmonic emissions measured at 3m shall not exceed 50 mV/m and 0.5 mV/m respectively. Fundamental emission in 902-928 MHz uses a CISPR quasi-peak detector. Emissions outside specified bands, except harmonics, must be attenuated by at least 50 dB below the fundamental or to the general field strength limits listed in RSS-Gen, whichever is less stringent.

7.2. Instruments Setting

Spectrum analyzer and receiver settings:

7.3. Test Procedure

1) Sequence of testing 9 kHz to 30 MHz

Setup: EUT simulates typical usage. For tabletop systems, EUT is on a 0.8m high rotatable table. For floor standing, EUT is on the ground with insulation. Auxiliary equipment and cables are positioned for normal operation. AC power port (if available) is connected to an outlet below the turntable. Measurement distance is 3 meters. EUT is set to operation.

Premeasurement: Turntable rotates 0° to 315° in 45° steps. Antenna height is 1.0 meter. Analyzer sweeps with peak detection at each turntable position to find maximum emissions.

Final measurement: Software maximizes peaks by rotating turntable (0° to 360°) and elevation axes (0° to 360°). Final measurement uses QPK detector at position causing highest emissions. Levels, frequency, measuring time, bandwidth, turntable position, correction factor, margin, and limit are recorded. A plot with graph of premeasurement and limit is stored.

2) Sequence of testing 30 MHz to 1 GHz

Setup: Same as 9 kHz to 30 MHz, but tabletop systems use a 0.8m high table on the ground plane.

Premeasurement: Turntable rotates 0° to 315° in 45° steps. Antenna is polarized vertical and horizontal. Antenna height changes from 1 to 3 meters. Analyzer sweeps three times in peak detection at each turntable position to find maximum emissions.

Final measurement: Performed with minimum six highest peaks. Software maximizes peaks by changing turntable position (± 45°) and antenna movement (1 to 4 meters). Final measurement uses QP detector with an EMI receiver. Levels, frequency, measuring time, bandwidth, antenna height, antenna polarization, turntable angle, correction factor, margin, and limit are recorded. A plot with graph of premeasurement and marked maximum final measurements and limit is stored.

3) Sequence of testing 1 GHz to 18 GHz

Setup: Same as 30 MHz to 1 GHz, but tabletop systems use a 1.5m high table.

Premeasurement: Turntable rotates 0° to 315° in 45° steps. Antenna is polarized vertical and horizontal. Antenna height scan range is 1 meter to 2.5 meters. Analyzer sweeps with peak detection at each turntable position to find maximum emissions.

Final measurement: Performed with minimum six highest peaks. Software maximizes peaks by changing turntable position (± 45°) and antenna movement (1 to 4 meters). This procedure is repeated for both antenna polarizations. Final measurement uses Peak and Average detector. Levels, frequency, measuring time, bandwidth, turntable position, EUT-table position, antenna polarization, correction factor, margin, and limit are recorded. A plot with graph of premeasurement and marked maximum final measurements and limit is stored.

7.4. Block Diagram of Test Setup

Below 30MHz Test Setup: The EUT is placed on a turntable (0.8m high) with a 3m distance to the RX Antenna. A Reference Ground Plane is indicated below the setup. The RX Antenna is connected to a SPA/Receiver.

Below 1GHz Test Setup: The EUT is placed on a turntable (0.8m high) with a 3m distance to the Antenna Tower, which holds a Bi-log Antenna. A Reference Ground Plane is indicated below the setup. The Bi-log Antenna is connected to a SPA/Receiver.

Above 1GHz Test Setup: The EUT is placed on a turntable (1.5m high) with a 3m distance to an Antenna (Boresight) tower holding a Horn antenna. The antenna height varies from 1m to 4m. A Pre-amp is connected between the Horn antenna and the Spectrum analyzer. The setup also indicates a Reference Ground Plane.

For frequencies above 18 GHz, extrapolation is applied from 3m to 1m using a 20 dB/decade factor.

7.5. EUT Operation during Test

The EUT was programmed to operate in a continuously transmitting mode.

7.6. Test Results of Radiated Emissions (9 KHz~30 MHz)

Temperature: 23.1°C, Humidity: 52.3%

The amplitude of spurious emissions attenuated by more than 20 dB below the permissible value are not reported.

Note: Distance extrapolation factor = 40 log (specific distance / test distance) (dB); Limit line = specific limits (dBuV) + distance extrapolation factor.

7.7. Test Results of Radiated Emissions (30 MHz – 1000 MHz)

Temperature: 23.1°C, Humidity: 52.3%

Horizontal Radiated Emissions (30 MHz - 1000 MHz)

The plot shows horizontal radiated emissions from 30 MHz to 1000 MHz. The FCC Part 15C_30-1000MHz limit line is indicated. Several peaks are observed, with the highest peak at 903.3093 MHz reaching 65.17 dBuV/m, which is 19.17 dB above the 46.00 dBuV/m limit, indicating a fundamental emission.

Vertical Radiated Emissions (30 MHz - 1000 MHz)

The plot shows vertical radiated emissions from 30 MHz to 1000 MHz. Similar to the horizontal plot, the FCC Part 15C_30-1000MHz limit line is present. The highest peak is at 903.3093 MHz, reaching 67.02 dBuV/m, which is 21.02 dB above the 46.00 dBuV/m limit, indicating a fundamental emission.

Notes:
1). Pre-scan all modes and recorded the worst case results in this report (Low Channel).
2). Emission level (dBuV/m) = 20 log Emission level (uV/m).
3). Level = Reading + Factor, Margin = Level – Limit, Factor = Antenna Factor + Cable Loss - Preamp Factor.

7.8. Results for Radiated Emissions (1 – 10 GHz)

Temperature: 23.1°C, Humidity: 52.3%, Configurations: TX

902.8MHz

908.4MHz

914MHz

Notes:
1). Measuring frequencies from 9 KHz - 10th harmonic (ex. 10GHz). No emission found between lowest internal used/generated frequency to 30 MHz.
2). Radiated emissions measured in frequency range from 9 KHz - 10th harmonic (ex. 10GHz) were made with an instrument using Peak detector mode.
3). Margin=Reading level+Cab loss+Ant Fac-Pre Fac-Limit.

8. Results for Band Edge Testing

8.1. Standard Applicable

FCC §15.249 (d) and RSS-210 B.10 (b) require emissions outside specified frequency bands (except harmonics) to be attenuated by at least 50 dB below the fundamental level or to the general radiated emission limits in §15.209/RSS-Gen, whichever is less stringent.

8.2. Test Setup Layout

The test setup for band edge testing is similar to the radiated emission test setup, featuring the EUT on a turntable (0.8m high) with a 3m distance to an Antenna Tower holding a Bi-log Antenna, connected to a SPA/Receiver. A Reference Ground Plane is indicated below the setup.

8.3. Measuring Instruments and Setting

Refer to the equipment list in this report for specific instruments and settings.

8.4. Test Procedures (Sequence of testing 30MHz to 1000 MHz)

Setup: EUT simulates typical usage. For tabletop systems, EUT is on a 0.8m high rotatable table. For floor standing, EUT is on the ground with insulation. Auxiliary equipment and cables are positioned for normal operation. AC power port (if available) is connected to an outlet below the turntable. Measurement distance is 3 meters. EUT is set to operation.

Premeasurement: Turntable rotates 0° to 315° in 45° steps. Antenna is polarized vertical and horizontal. Antenna height changes from 1 to 3 meters. Analyzer sweeps three times in peak detection at each turntable position to find maximum emissions.

Final measurement: Performed with minimum six highest peaks. Software maximizes peaks by changing turntable position (± 45°) and antenna movement (1 to 4 meters). Final measurement uses QP detector with an EMI receiver. Levels, frequency, measuring time, bandwidth, antenna height, antenna polarization, turntable angle, correction factor, margin, and limit are recorded. A plot with graph of premeasurement and marked maximum final measurements and limit is stored.

8.5. Measuring Instruments and Setting

Temperature: 23.8°C, Humidity: 52.5%

Result: PASS

Remark:
1. The other emission levels were very low against the limit.
2. Detector PK is setting spectrum/receiver. RBW=100KHz/VBW=300KHz/Sweep time=Auto/Detector=Peak;
3. Please refer to following test plots;

902.8 MHz Vertical Band Edge

The plot shows the vertical band edge measurement for 902.8 MHz. The FCC PART 15.249(902-928) limit line is indicated. The highest peak is at 902.8500 MHz, reaching 87.25 dBuV/m, which is -6.75 dB below the 94.00 dBuV/m limit. Other measured points are well below the limit.

902.8 MHz Horizontal Band Edge

The plot shows the horizontal band edge measurement for 902.8 MHz. The FCC PART 15.249(902-928) limit line is indicated. The highest peak is at 902.8000 MHz, reaching 87.25 dBuV/m, which is -6.75 dB below the 94.00 dBuV/m limit. Other measured points are well below the limit.

908.4 MHz Vertical Band Edge

The plot shows the vertical band edge measurement for 908.4 MHz. The FCC PART 15.247(902-928) limit line is indicated. The highest peak is at 908.3700 MHz, reaching 87.31 dBuV/m, which is -6.69 dB below the 94.00 dBuV/m limit.

908.4 MHz Horizontal Band Edge

The plot shows the horizontal band edge measurement for 908.4 MHz. The FCC PART 15.247(902-928) limit line is indicated. The highest peak is at 908.4300 MHz, reaching 87.78 dBuV/m, which is -6.22 dB below the 94.00 dBuV/m limit.

914 MHz Horizontal Band Edge

The plot shows the horizontal band edge measurement for 914 MHz. The FCC PART 15.247(902-928) limit line is indicated. The highest peak is at 913.9600 MHz, reaching 87.97 dBuV/m, which is -6.03 dB below the 94.00 dBuV/m limit. Other measured points are well below the limit.

914 MHz Vertical Band Edge

The plot shows the vertical band edge measurement for 914 MHz. The FCC PART 15.247(902-928) limit line is indicated. The highest peak is at 913.9600 MHz, reaching 87.55 dBuV/m, which is -6.45 dB below the 94.00 dBuV/m limit. Other measured points are well below the limit.

Notes:
1) Level (dBuv/m) =Reading+Factor;
2) Margin(dB)=Level-Limit;
3) Factor=Ant Fac-Pre Fac+Cab Loss.

9. 99% Occupied Bandwidth and 20 dB Bandwidth Measurement

9.1. Standard Applicable

According to § 2.1049 and RSS-Gen section 6.7, the "99% emission bandwidth" is the frequency range containing 99% of the total transmitted power. The "x dB bandwidth" is the frequency range where the power level is attenuated by x dB below the maximum in-band power level.

9.2. Block Diagram of Test Setup

The block diagram shows the EUT connected to a Spectrum Analyzer, indicating a direct measurement setup for bandwidth analysis.

9.3. Test Procedure

Spectrum Analyzer Settings:
Span = 1 MHz
RBW = 10 KHz
VBW = 30 KHz
Sweep = auto
Detector function = peak
Trace = max hold

The EUT transmits at its maximum data rate. The marker-to-peak function sets the marker to the peak emission. The marker-delta function measures the 20 dB bandwidth. This process is repeated for each variation in operation mode.

9.4. Test Results

Temperature: 24.6°C, Humidity: 54.1%

Remark:
1. Test results including cable loss;
2. Please refer following test plots;

FM - 902.8MHz Bandwidth Plot

The plot shows the occupied bandwidth and 20 dB bandwidth for the 902.8 MHz frequency. The Occupied Bandwidth is 242.84 kHz, and the 20 dB Bandwidth is 264.3 kHz. Transmit Freq Error is 5 Hz. The total power is 2.75 dBm.

FM - 908.4MHz Bandwidth Plot

The plot shows the occupied bandwidth and 20 dB bandwidth for the 908.4 MHz frequency. The Occupied Bandwidth is 244.84 kHz, and the 20 dB Bandwidth is 267.9 kHz. Transmit Freq Error is 9 Hz. The total power is 3.11 dBm.

FM - 914MHz Bandwidth Plot

The plot shows the occupied bandwidth and 20 dB bandwidth for the 914 MHz frequency. The Occupied Bandwidth is 243.15 kHz, and the 20 dB Bandwidth is 268.2 kHz. Transmit Freq Error is 368 Hz. The total power is 3.13 dBm.

10. List of Measuring Equipment

Photographs of the EUT

Please refer to separated files for Test Setup Photos, Exterior Photographs, and Interior Photographs of the EUT.