FCC Test Report for Govee Flow Plus Light Bar

1. General Information

1.1. Client Information

• Client Name: Shenzhen Intellirocks Tech. Co., Ltd.
• Address: No. 2901-2904, 3002, Block C, Section 1, Chuangzhi Yuncheng Building, Liuxian Avenue, Xili Community, Xili Street, Nanshan District, Shenzhen, Guangdong, China
• Product Name: Govee Flow Plus Light Bar
• Date: Sep. 01, 2021

1.2. Description of Device (EUT)

• Product Name: Govee Flow Plus Light Bar
• Model No.: H6056
• Trade Mark: N.A.
• Test Power Supply: AC 120V, 60Hz for adapter/ AC 240V, 60Hz for adapter
• Test Sample No.: 1-2-1 (Normal Sample), 1-2-2 (Engineering Sample)
• Operation Frequency: 802.11b/g/n(HT20): 2412-2462MHz; BLE: 2402-2480MHz
• Number of Channel: 802.11b/g/n(HT20): 11 Channels; BLE: 40 Channels
• Modulation Type: WIFI: CCK, DQPSK, DBPSK for DSSS; 64QAM, 16QAM, QPSK, BPSK for OFDM; BLE: GFSK
• Antenna Type: PCB antenna
• Antenna Gain (Peak): 1.5 dBi

Remark: This report is for the BLE Module. For a more detailed features description, refer to the manufacturer's specifications or the User's Manual.

1.3. Auxiliary Equipment Used During Test

N.A.

1.4. Description of Test Modes

To investigate the maximum EMI emission characteristics, the test system was pre-scanning based on the EUT operation mode or test configuration mode which could affect the EMI emission level. Each of these EUT operation modes or configurations was evaluated respectively.

Measurements were performed at the highest, middle, and lowest available channels. The data rate was set to 1Mbps for radiated emission due to the highest RF output power. The engineering test was provided, and the EUT was programmed to be in continuously transmitting mode. The EUT was battery-powered, and fully-charged battery use was confirmed during the test.

1.5. List of channels

The document lists 40 channels for BLE, ranging from 2402 MHz (Channel 00) to 2480 MHz (Channel 39), with corresponding frequencies for each channel.

1.6. Description Of Test Setup

Conducted Emission (CE) Test Setup: The EUT (E-1) is connected to an adapter (E-2). The setup includes a LISN (Line Impedance Stabilization Network) and a Test Receiver. The EUT and adapter are placed on a table, with a height of 0.8m from the ground reference plane. The distance between the EUT and LISN is 1.5m. The setup is within a shielding room.

Radiated Emission (RE) Test Setup: The EUT (E-1) is connected to an adapter (E-2). The setup includes a System Simulator, a Spectrum Analyzer/Receiver, and an RX Antenna. The EUT and adapter are placed on a table, with a height of 0.8m (for below 1GHz) or 1.5m (for above 1GHz) from the metal full soldered ground plane. The distance between the EUT and RX Antenna is 1m or 3m depending on the test. The setup includes an antenna feed point and is within a 9x6x6 Chamber.

1.7. Test Equipment List

The report lists various test equipment used, including LISN, EMI Test Receivers, RF Switching Unit, MAX Spectrum Analysis, Preamplifier, Double Ridged Horn Antenna, Bilog Broadband Antenna, Loop Antenna, Horn Antenna, Power Sensors, MXG RF Vector Signal Generator, Signal Generator, DC Power Supply, and Constant Temperature & Humidity Chamber. Each item includes manufacturer, model number, serial number, last calibration date, and calibration interval (mostly 1 Year, some 2 Year).

1.8. Measurement Uncertainty

• Radiation Uncertainty: Ur = 3.9 dB (Horizontal), Ur = 3.8 dB (Vertical)
• Conduction Uncertainty: Uc = 3.4 dB

1.9. Description of Test Facility

The test facility is recognized, certified, and accredited by the following organizations:

• FCC-Registration No.: 184111
  Shenzhen Anbotek Compliance Laboratory Limited, EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in their files. Registration No. 184111, September 30, 2020.
• ISED-Registration No.: 8058A
  Shenzhen Anbotek Compliance Laboratory Limited, EMC Laboratory has been registered and fully described in a report filed with the (ISED) Innovation, Science and Economic Development Canada. The acceptance letter from the ISED is maintained in their files. Registration 8058A, September 30, 2020.
• Test Location: Shenzhen Anbotek Compliance Laboratory Limited. 1/F, Building D, Sogood Science and Technology Park, Sanwei community, Hangcheng Street, Bao'an District, Shenzhen, Guangdong, China.518102

2. Summary of Test Results

Remark: "N/A" is an abbreviation for Not Applicable.

3. Conducted Emission Test

3.1. Test Standard and Limit

FCC Part 15 Section 15.207 specifies limits for maximum RF Line Voltage (dBuV) for both Quasi-peak and Average levels across frequency ranges from 150kHz to 30MHz. The limits decrease linearly with the logarithm of the frequency, and the lower limit applies at the transition frequency.

3.2. Test Setup

The setup involves the EUT, a Test Receiver, LISN1, LISN2, and a Ground Reference Plane within a Shielding Room. The EUT is connected to the LISN, and the distance between the EUT and the LISN is 80cm.

3.3. Test Procedure

The EUT system is connected to the power mains through a Line Impedance Stabilization Network (L.I.S.N.), providing a 50ohm coupling impedance. Both sides of the AC line are checked for maximum conducted emission. To find the maximum emission levels, the relative positions of equipment and all interface cables are changed according to FCC ANSI C63.10: 2020 on Conducted Emission Measurement. The bandwidth of the test receiver (ESCI) is set at 9kHz. The frequency range from 150kHz to 30MHz is checked.

3.4. Test Data

During the test, all modes were pre-scanned, and the "middle CH" was found to be the worst case, with its data recorded in the report. The report includes detailed graphs and tables for conducted emissions under AC 120V and AC 240V, for both Live and Neutral lines. All measured values were found to be below the specified limits, indicating compliance.

4. Radiation Spurious Emission and Band Edge

4.1. Test Standard and Limit

FCC Part 15 Section 15.209 and 15.205 specify field strength limits for radiated emissions across various frequency ranges, with different measurement distances. For frequencies below 30MHz, limits are in microvolt/meter and dBuV/m at 30m. For frequencies from 30MHz to 1000MHz, limits are in microvolt/meter and dBuV/m at 3m. Above 1000MHz, peak and average limits are 74.0 dBuV/m and 54.0 dBuV/m respectively at 3m. The lower limit applies at the transition frequency. Unless otherwise specified, the limit on peak radio frequency emissions is 20dB above the maximum permitted average emission limit applicable to the equipment under test. This peak limit applies to the total peak emission level radiated by the device.

4.2. Test Setup

The setup for below 30MHz involves the EUT, a System Simulator, and a Loop Antenna on a metal full soldered ground plane. For 30MHz to 1GHz, the setup includes the EUT, a System Simulator, a Bilog Broadband Antenna, and a Spectrum Analyzer/Receiver on a metal full soldered ground plane. For above 1GHz, the setup includes the EUT, a System Simulator, a Horn Antenna, and a Spectrum Analyzer/Receiver on a metal full soldered ground plane. Distances and heights are specified for each setup.

4.3. Test Procedure

For below 1GHz, the EUT is placed on a turntable 0.8m above the ground plane. For above 1GHz, the EUT is placed on a turntable 1.5m above the ground plane. The turntable rotates 360 degrees to determine the maximum emission level. The EUT is set 3 meters away from the receiving antenna, which is mounted on an antenna tower. The antenna can be moved up and down from 1 to 4 meters to find the maximum emission level. The EUT is rotated through three orthogonal axes to determine maximum emissions, with both horizontal and vertical polarization of the antenna set for testing. The EUT is tested in a 9x6x6 Chamber, and the device is evaluated in xyz orientation.

4.4. Test Data

The test results for 9kHz-30MHz were attenuated more than 20dB below the permissible limits, so the results are not recorded in detail in the report. The report provides detailed tables for test results from 30MHz to 1000MHz and 1GHz to 25GHz for different test modes (CH00, CH19, CH39) and polarizations (Vertical, Horizontal). All measured values were found to be below the specified limits, indicating compliance. Spectrum analyzer plots for Peak Value (Vertical/Horizontal) and Average Value (Vertical/Horizontal) for band edge measurements (CH00, CH39) are included, showing compliance with the limits.

5. Maximum Peak Output Power Test

5.1. Test Standard and Limit

FCC Part 15 Section 15.247 (b)(3) specifies a test limit of 30dBm.

5.2. Test Setup

The setup involves the EUT connected to a Spectrum Analyzer.

5.3. Test Procedure

1. Place the EUT on the table and set it in transmitting mode.
2. Set the RBW ≥DTS bandwidth.
3. Set the VBW≥3*RBW.
4. Detector = peak.
5. Sweep time = auto couple.
6. Trace mode = max hold.
7. Allow trace to fully stabilize.
8. Use peak marker function to determine the peak amplitude level.

5.4. Test Data

The test passed. Refer to clause 3 of the Appendix Test Data for more details. Additional test for duty cycle is also referenced to clause 1 of the Appendix Test Data.

6. 6DB Occupy Bandwidth Test

6.1. Test Standard and Limit

FCC Part 15 Section 15.247 (a)(2) specifies a test limit of >500kHz.

6.2. Test Setup

The setup involves the EUT connected to a Spectrum Analyzer.

6.3. Test Procedure

1. Place the EUT on the table and set it in transmitting mode.
2. Remove the antenna from the EUT and then connect a low loss RF cable from the antenna port to the spectrum analyzer.
3. Set the spectrum analyzer as: RBW = 100kHz, VBW≥3*RBW =300kHz, Detector= Peak, Trace mode= Max hold, Sweep= auto couple.
4. Mark the peak frequency and –6dB (upper and lower) frequency.
5. Repeat until all the rest channels are investigated.

6.4. Test Data

The test passed. Refer to clause 2 of the Appendix Test Data for more details.

7. Power Spectral Density Test

7.1. Test Standard and Limit

FCC Part 15 Section 15.247 (e) specifies a test limit of 8dBm/3KHz.

7.2. Test Setup

The setup involves the EUT connected to a Spectrum Analyzer.

7.3. Test Procedure

1. Place the EUT on the table and set it in transmitting mode.
2. Remove the antenna from the EUT and then connect a low loss RF cable from the antenna port to the spectrum analyzer.
3. Set the spectrum analyzer as RBW = 3kHz, VBW = 10kHz, Span = 1.5xDTS BW.
4. Record the max. reading.
5. Repeat the above procedure until the measurements for all frequencies are completed.

7.4. Test Data

The test passed. Refer to clause 4 of the Appendix Test Data for more details.

8. 100kHz Bandwidth of Frequency Band Edge Requirement

8.1. Test Standard and Limit

FCC Part 15 Section 15.247 (d) states that in any 100 kHz bandwidth outside the frequency bands in which the spread spectrum intentional radiator is operating, the radio frequency power produced by the intentional radiator shall be at least 20dB below that in the 100kHz bandwidth within the band that contains the highest level of the desired power. In addition, radiated emissions which fall in the restricted bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in 15.209(a).

8.2. Test Setup

The setup involves the EUT connected to a Spectrum Analyzer.

8.3. Test Procedure

Using the following spectrum analyzer setting:

1. Set the RBW = 100KHz.
2. Set the VBW = 300KHz.
3. Sweep time = auto couple.
4. Detector function = peak.
5. Trace mode = max hold.
6. Allow trace to fully stabilize.

8.4. Test Data

The test passed. Refer to clause 5 of the Appendix Test Data for more details.

9. Antenna Requirement

9.1. Test Standard and Requirement

1) 15.203 requirement: An intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator, the manufacturer may design the unit so that a broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is prohibited.

2) 15.247(c) (1)(i) requirement: Systems operating in the 2400-2483.5 MHz band that is used exclusively for fixed. Point-to-point operations may employ transmitting antennas with directional gain greater than 6dBi provided the maximum conducted output power of the intentional radiator is reduced by 1 dB for every 3 dB that the directional gain of the antenna exceeds 6 dBi.

9.2. Antenna Connected Construction

The antenna is a PCB antenna which is permanently attached, and the best case gain of the antenna is 1.5 dBi. It complies with the standard requirement.

Appendices

APPENDIX I -- TEST SETUP PHOTOGRAPH: Refer to separated files for Test Setup Photos of the EUT.

APPENDIX II -- EXTERNAL PHOTOGRAPH: Refer to separated files for External Photos of the EUT.

APPENDIX III -- INTERNAL PHOTOGRAPH: Refer to separated files for Internal Photos of the EUT.

APPENDIX IV -- Appendix Test Data: Refer to separated files for Appendix Test Data.