TÜV Rheinland Product Test Report

Remarks

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

2. This document was signed digitally. TÜV Rheinland has not verified, and is unable to verify, legal or other requirements applicable to this document. Verification is the responsibility of the document user. Upon request, TÜV Rheinland can confirm the digital signature's validity via a separate document. Contact sales for this service; an environmental fee applies. Information on verifying document authenticity is available at go.tuv.com/digital-signature.

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

4. The decision rule for conformity statements based on numerical measurement results uses the "Zero Guard Band Rule" and "Simple Acceptance" as per ILAC G8:2019 and IEC Guide 115:2021, unless otherwise specified. Measurement uncertainty is not taken into account.

Revision History

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 a SJÖSS USB Charger. Further information is available in the user's manual.

2.2 Ratings and System Details:

• Rated input: AC 100-240 V, 50/60 Hz; Max. 0.5 A
• Output: 5.0 V 3.0 A 15.0 W, 9.0 V 2.22 A 20.0 W, 12.0 V 1.67 A 20.0 W, 15.0 V 1.33 A 20.0 W
• Protection class: II

2.3 Independent Operation Modes: The basic operation mode is continuously operating with matching load.

2.4 Description of interconnecting cables: None.

2.5 Noise Generating and Noise Suppressing Parts: Refer to the circuit diagram for further information.

2.6 Highest frequency generated or used: The highest frequency used in the EUT is less than 108 MHz.

2.7 Submitted Documents: Circuit diagram, user's manual, and rating label.

Test Set-up and Operation Modes

3.1 Principle of Configuration Selection: The EUT was configured to measure its highest possible emission level. Test conditions were adapted according to instructions for use. Radiated emission tests were performed on 2024-12-14, and conducted emission tests were performed on 2024-10-30.

3.2 Equipment and cable arrangement:

Conducted Emission Setup: A block diagram shows the EUT connected to a LISN, EMI receiver, Computer, Transformer, and Power Supply.

Radiated Emission Setup: A block diagram shows the EUT connected to an EMI receiver, Computer, and Antenna.

3.3 Test Software: No special test software was used during the tests.

3.4 Special Accessories and Auxiliary Equipment: Matching load was used for USB port load during all testing.

3.5 Countermeasures to achieve EMC Compliance: No other special measures were employed.

Conformity Decision Rule

For all EMI tests in this report, compliance with limits is determined by comparing measurement results directly with corresponding limits, without considering measurement uncertainties, as 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 Mains Terminal Continuous Disturbance Voltage

Result: Passed

Date of testing: 2024-10-30

Test procedure: FCC 47 CFR Part 15, Subpart B:2022, ICES-003:2020, ANSI C63.4-2014 and CISPR 16-2-1

Frequency range: 0.15 - 30 MHz

Limits:

• Quasi-peak: 0.15-0.5 MHz: 66 to 56 dBμV (decreasing); 0.5-5 MHz: 56 dBμV; 5-30 MHz: 60 dBμV.
• Average: 0.15-0.5 MHz: 56 to 46 dBμV (decreasing); 0.5-5 MHz: 46 dBμV; 5-30 MHz: 50 dBμV.

Bandwidth of EMI receiver: 9 kHz

Measurement time: 1 s

Kind of test site: Shielded room

Input voltage: AC 120 V, 60 Hz

Operational mode: As defined in clause 2.3

Ambient condition: Temperature: 21.5 °C; Relative humidity: 48%

Expanded measurement uncertainty (k=2): 2.33 dB

The minimum margin to the limit is 8.71 dB at 0.654000 MHz. The margin is higher than expanded measurement uncertainty.

The measurement setup was made according to ANSI C63.4-2014 in a shielded room. The equipment complies with CISPR 16-1 standards. The EUT was placed on a wooden support, 0.8 m away from the AMN. Excess cable was folded to form a bundle of 0.3-0.4 m. Tests were performed on the neutral and phase lines.

The spectral diagrams show Quasi-Peak and Average measurement results.

Note 1: The EUT generated the highest emission level under DC 15 V by measurement. Therefore, only the data of DC 15 V was retained.

5.2 Emission in the Frequency Range above 30 MHz

5.2.1 Radiated emission (30 MHz - 1 GHz)

Result: Passed

Date of testing: 2024-12-14

Test procedure: FCC 47 CFR Part 15, Subpart B:2022, ICES-003:2020, ANSI C63.4-2014 and CISPR 16-2-3

Frequency range: 30 - 1000 MHz

Limits (Quasi-peak, 3 m distance):

• 30-88 MHz: 40 dBμV/m
• 88-216 MHz: 43.5 dBμV/m
• 216-960 MHz: 46 dBμV/m
• Above 960 MHz: 54 dBμV/m

Bandwidth of EMI receiver: 120 kHz

Measurement time: 1 s

Kind of test site: Semi-anechoic chamber

Operational mode: As defined in clause 2.3

Input voltage: AC 120 V; 60 Hz

Ambient condition: Temperature: 20.5 °C; Relative humidity: 45%

Expanded measurement uncertainty (k=2): 5.40 dB

The minimum margin to the limit is 11.7 dB at 30.606250 MHz. The margin is higher than expanded measurement uncertainty.

The radiated disturbance test was carried out in a semi-anechoic chamber with a 3 m test distance. The EUT was placed on a 0.8 m high wooden table. The table was rotated 360°, and the antenna height was varied from 1 m to 4 m. Tests were performed with horizontal and vertical antenna polarizations.

The spectral diagrams show quasi-peak test results (marked with 'x').

Note 1: Measurement was made up to 1 GHz as the highest internal frequency of the EUT is less than 108 MHz.

Note 2: FCC Class B limits are stricter than ICES-003:2020 for a 3 m test distance.

Note 3: The EUT generated the highest emission level under DC 15 V. Therefore, only the data of DC 15 V was retained.

Photographs of the Test Set-Up

Refer to the test setup file.

List of Test and Measurement Instruments

List of Figures

• Figure 1: Spectral Diagrams, Conducted Emission, 150 kHz – 30 MHz, L (Page 12)
• Figure 2: Spectral Diagrams, Conducted Emission, 150 kHz – 30 MHz, N (Page 13)
• Figure 3: Spectral Diagrams and measurement results, horizontal polarization (30 MHz to 1 GHz) (Page 16)
• Figure 4: Spectral Diagrams and measurement results, vertical polarization (30 MHz to 1 GHz) (Page 17)

End of test report.