TÜV Rheinland Test Report - Products

Remarks

1. All test equipment used during the specified testing period was calibrated according to the laboratory's calibration program and fulfills the requirements of the relevant standards. Traceability of the test equipment is ensured by compliance with the management system regulations. Detailed information regarding test conditions, equipment, and measurement uncertainty is available upon request.

2. This document was signed digitally as contractually agreed. TÜV Rheinland has not verified, and is unable to verify, which legal or other pertaining requirements are applicable for this document. Such verification is the responsibility of the user. Upon client request, TÜV Rheinland can confirm the validity of the digital signature via a separate document, which requires addressing our Sales department and may incur an environmental fee. For information on verifying document authenticity, visit: go.tuv.com/digital-signature.

3. Test clauses marked with '*' were subcontracted to qualified subcontractors and are described under the respective test clause in the report. Deviations from testing specifications or customer requirements are listed in the specific test clause within the report.

4. The decision rule for conformity statements based on numerical measurement results in this report follows the "Zero Guard Band Rule" and "Simple Acceptance" as per ILAC G8:2019 and IEC Guide 115:2021, unless otherwise specified in the applied standard or requested by the customer. This means measurement uncertainty is not taken into account and is not declared in the report. For additional information on the risks associated with this decision rule, refer to ILAC G8:2019.

Revision History

Test Sites

1.1 Test Facilities

Laboratory: TÜV Rheinland (Shanghai) Co., Ltd.

Address: Workshop14, North Half of Workshop 10 and Workshop 16, Pingqian (Taicang) Modern Industrial Park, No.525, Yuewang Lingang South Road, Shaxi, Taicang, Jiangsu, China

The test equipment used complies with CISPR 16-1 series standards for measurement of radio interference.

Refer to Clause 7 for test and measurement instruments.

General Product Information

2.1 Product Function and Intended Use

The EUT (equipment under test) is an ordinary LED light chain intended for lighting and similar use. Refer to the user's manual for further information.

2.2 Ratings and System Details

• Rated input: AC 120 V, 60 Hz
• Rated power: 0.75 W
• Protection class: II

This product is an LED light chain powered by the approved Class 2 power unit ICPSW24-3.6-IL-1. The power unit information is as follows:

2.3 Independent Operation Modes

The basic operation modes are: “ON” and “OFF”.

2.4 Description of Interconnecting Cables

2.5 Noise Generating and Noise Suppressing Parts

Refer to the circuit diagram for further information.

2.6 Highest Frequency Generated or Used in the Device

The highest frequency used in the EUT is 65 kHz.

2.7 Submitted Documents

Circuit diagram, user's manual, and rating label.

Test Set-up and Operation Modes

3.1 Principle of Configuration Selection

For emission testing, the equipment under test (EUT) was configured to measure its highest possible emission level. Test conditions were adapted according to the instructions for use. Radiated emission tests were performed on 2024-09-20, and conducted emission tests were performed on 2024-09-24.

3.2 Equipment and Cable Arrangement

Block diagrams for conducted emission and radiated emission tests are provided below:

Conducted Emission Setup Diagram:

The setup includes the EUT, a Line Impedance Stabilization Network (LISN), a Transformer, a Power Supply, an EMI receiver, and a Computer. The EUT is placed on a table 0.8 meters high. The LISN is connected to the power supply. The EMI receiver is connected to the LISN to measure emissions. The computer controls the test setup.

Radiated Emission Setup Diagram:

The setup includes the EUT placed on a wooden support (0.8m height) above a ground plane. The antenna is positioned at a distance of 3 meters from the EUT. The antenna height can be varied from 1 to 4 meters. The test is performed with the antenna in both horizontal and vertical polarizations. The EUT is rotated 360 degrees on its support to find maximum disturbance.

Refer to Clause 6 for photographs of the test set-ups.

3.3 Test Software

No special test software was used during the tests.

3.4 Special Accessories and Auxiliary Equipment

None.

3.5 Countermeasures to Achieve EMC Compliance

No other special measures were employed to achieve the requirement.

Conformity Decision Rule

For all EMI tests in this report, compliance with the limits is determined by comparing measurement results directly with the corresponding limits, without considering measurement uncertainties. This approach is used because the measurement uncertainties are less than the values specified in CISPR 16-4-2.

Test Results EMISSION

5.1 Emission in the Frequency Range up to 30 MHz

5.1.1 Conducted Emission

Result: Passed

• Date of testing: 2024-09-14
• Test procedure: FCC 47 CFR Part 15, Subpart B:2022, ICES-005:2018, ANSI C63.4-2014 and CISPR 16-2-1
• Frequency range: 0.15 – 30 MHz
• Limits:
  Quasi-peak limit: 0.15–0.5 MHz (66 to 56 dBμV decreasing with frequency), 0.5–5 MHz (56 dBμV), 5–30 MHz (60 dBμV).
  Average limit: 0.15–0.5 MHz (56 to 46 dBμV decreasing with frequency), 0.5–5 MHz (46 dBμV), 5–30 MHz (50 dBμV).
• Bandwidth of EMI receiver for final measurement: 9 kHz
• Measurement time for final measurement: 1 s
• Kind of test site: Shielded room
• Input voltage: AC 120 V, 60 Hz
• Operational mode: Lighting on
• Ambient condition: Temperature: 24.1 °C; Relative humidity: 48.4%
• Expanded measurement uncertainty (k=2): 2.33 dB

The minimum margin to the limit is 11.61 dB at 0.543750 MHz. This margin is higher than the expanded measurement uncertainty.

The measurement setup followed ANSI C63.4-2014 in a shielded room. The measurement equipment, including test receivers, quasi-peak detector, and artificial mains network (AMN), complies with CISPR 16-1 series standards. The EUT was placed on a wooden support, 0.8 m away from the AMN. Excess power cord length was bundled to a length between 0.3 m and 0.4 m. The disturbance voltage test was performed on both the neutral and phase lines of the EUT's power supply.

The spectral diagrams show Quasi-Peak (QP) and Average (AV) measurement results. The QP values are indicated by diamonds (♦), and AV values by circles (•).

Conducted Emission Results (Line L)

Conducted Emission Results (Line L) - Average

Conducted Emission Results (Line N)

Conducted Emission Results (Line N) - Average

5.2 Emission in the Frequency Range above 30 MHz

5.2.1 Radiated Emission (30-1000 MHz)

Result: Passed

• Date of testing: 2024-09-20
• Test procedure: FCC 47 CFR Part 15, Subpart B:2022, ICES-005:2018, ANSI C63.4-2014 and CISPR 16-2-3
• Product classification: Class B
• Frequency range: 30 – 1000 MHz
• Limits (3 m distance):
  30 – 88 MHz: 40 dBuV/m
  88 – 216 MHz: 43.5 dBuV/m
  216 – 1000 MHz: 46 dBuV/m
• Bandwidth of EMI receiver for final measurement: 120 kHz
• Measurement time for final measurement: 1 s
• Kind of test site: Semi-anechoic chamber
• Input voltage: AC 120 V, 60 Hz
• Operational mode: Lighting on
• Ambient condition: Temperature: 24.6 °C; Relative humidity: 47.5 %
• Expanded measurement uncertainty (k=2): 5.40 dB

The minimum margin to the limit is 10.2 dB at 30.363750 MHz. This margin is higher than the expanded measurement uncertainty.

The radiated disturbance test was conducted in a semi-anechoic chamber with a test distance of 3 meters. The EUT was placed on an 80 cm wooden support. The support was rotated 360°, and the antenna height was varied from 1 m to 4 m to find the maximum disturbance. Tests were performed with the antenna in both horizontal and vertical polarizations.

The spectral diagrams show quasi-peak test results, indicated by 'x'.

Radiated Emission Results (Horizontal Polarization)

Radiated Emission Results (Vertical Polarization)

Note 1: The highest frequency in the EUT is less than 108 MHz. According to FCC Part 15 subpart B §15.33 (b) (1), the upper frequency for radiated emission measurement is 1000 MHz.

Note 2: The class B limits of ICES-005:2018 are stricter than those FCC 47 CFR Part 15, Subpart B:2022 for a 3 m test distance. Therefore, the former limits are used in the following figures and tables.

List of Test and Measurement Instruments

List of Figures

• Figure 1: Spectral Diagrams, Conducted Emission, 150 kHz – 30 MHz, L
• Figure 2: Spectral Diagrams, Conducted Emission, 150 kHz – 30 MHz, N
• Figure 3: Spectral Diagrams, Radiated Emission, 30 MHz – 1000 MHz, Horizontal polarization
• Figure 4: Spectral Diagrams, Radiated Emission, 30 MHz – 1000 MHz, Vertical polarization