IKEA SJÖSS USB Charger (E2502-NA) EMC Test Report
Test Report Number: CN241BMW 001
Client: IKEA of Sweden AB
Product: SJÖSS USB Charger
Model/Type No.: E2502-NA
FCC ID: FHO-E2502
Testing Laboratory: TÜV Rheinland (Shanghai) Co., Ltd.
Test Specification: FCC 47 CFR Part 15, Subpart B:2022 Class B, ICES-003:2020
Date of Issue: 2025-01-02
1. Test Facilities
The tests were conducted by TÜV Rheinland (Shanghai) Co., Ltd. at their facility located in Taicang, Jiangsu, China. The test equipment used complies with CISPR 16-1 series standards.
2. General Product Information
Product Function and Intended Use: The equipment under test (EUT) is the SJÖSS USB Charger. Further details are available in the user's manual.
Ratings and System Details:
- Rated Input: AC 100-240 V, 50/60 Hz; Max. 1.6 A
- Output: Various voltage and current ratings including 5.0V/3.0A (15.0W) up to 20.0V/3.25A (65.0W), and PPS: 5.0-16.0V/3.0A (48.0W).
- Protection Class: II
Operation Mode: The EUT operates continuously with a matching load.
Highest Frequency: The highest frequency generated or used by the EUT is less than 108 MHz.
3. Test Set-up and Operation Modes
Configuration: The EUT was configured to achieve the highest possible emission level. Tests were performed according to the instructions for use.
Testing Sequence:
- Radiated emission tests: 2024-10-31 to 2024-11-05
- Conducted emission tests: 2024-10-30
Equipment and Cable Arrangement:
Conducted Emission Setup: The EUT was placed on a wooden support, 0.8m from the Artificial Mains Network (AMN). The AMN was connected to an EMI receiver and a computer. The power supply was connected to the AMN. The test was performed on both the phase and neutral lines. The test setup utilized a shielded room.
Radiated Emission Setup: The EUT was placed on a 0.8m high wooden table in a semi-anechoic chamber. The distance between the EUT and the receiving antenna was 3 meters. The table was rotated 360°, and the antenna height was varied from 1m to 4m to find maximum disturbance. Tests were performed with the antenna in horizontal and vertical polarizations.
Test Software: No special test software was used.
Auxiliary Equipment: A matching load was used for the USB port during testing.
Countermeasures: No special measures were employed to achieve EMC compliance.
4. Conformity Decision Rule
Compliance with limits is determined by directly comparing measurement results with limits, as measurement uncertainties are within acceptable ranges according to CISPR 16-4-2.
5. Test Results: Emission
5.1 Mains Terminal Continuous Disturbance Voltage (0.15 MHz - 30 MHz)
Result: Passed
Test Procedure: FCC 47 CFR Part 15, Subpart B:2022, ICES-003:2020, ANSI C63.4-2014, CISPR 16-2-1.
Limits:
- Quasi-peak: 0.15-0.5 MHz (66-56 dBμV), 0.5-5 MHz (56 dBμV), 5-30 MHz (60 dBμV).
- Average: 0.15-0.5 MHz (56-46 dBμV), 0.5-5 MHz (46 dBμV), 5-30 MHz (50 dBμV).
Test Conditions: Shielded room, AC 120 V, 60 Hz. Ambient: 21.5°C, 48% RH. Bandwidth: 9 kHz. Measurement Time: 1 s. Expanded Uncertainty: 2.33 dB.
The minimum margin to the limit was 5.28 dB.
Conducted Emission Data (Line L):
| Frequency (MHz) | QuasiPeak (dBμV) | Limit (dBμV) | Margin (dB) | Average (dBμV) | Limit (dBμV) | Margin (dB) |
|---|---|---|---|---|---|---|
| 0.152250 | 60.60 | 65.88 | 5.28 | 36.20 | 54.21 | 18.02 |
| 0.386250 | 40.26 | 58.14 | 17.89 | 23.83 | 51.35 | 27.52 |
| 0.678750 | 34.30 | 56.00 | 21.70 | 26.64 | 48.34 | 21.70 |
| 0.865500 | 32.49 | 56.00 | 23.51 | 17.47 | 46.00 | 28.53 |
| 1.047750 | 30.88 | 56.00 | 25.12 | 21.69 | 46.00 | 24.31 |
| 4.546500 | 31.86 | 56.00 | 24.14 | 25.36 | 50.00 | 24.64 |
Conducted Emission Data (Line N):
| Frequency (MHz) | QuasiPeak (dBμV) | Limit (dBμV) | Margin (dB) | Average (dBμV) | Limit (dBμV) | Margin (dB) |
|---|---|---|---|---|---|---|
| 0.152250 | 60.51 | 65.88 | 5.36 | 34.92 | 54.02 | 19.10 |
| 0.534750 | 40.78 | 56.00 | 15.22 | 29.40 | 48.14 | 18.74 |
| 0.712500 | 39.92 | 56.00 | 16.08 | 25.94 | 46.00 | 20.06 |
| 0.892500 | 39.87 | 56.00 | 16.13 | 25.67 | 46.00 | 20.33 |
| 2.379750 | 38.48 | 56.00 | 17.52 | 25.51 | 46.00 | 20.49 |
| 5.167500 | 36.63 | 60.00 | 23.37 | 27.78 | 46.00 | 18.22 |
5.2 Radiated Emission (30 MHz - 1 GHz)
Result: Passed
Test Procedure: FCC 47 CFR Part 15, Subpart B:2022, ICES-003:2020, ANSI C63.4-2014, CISPR 16-2-3.
Limits (3m 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
Test Conditions: Semi-anechoic chamber, AC 120 V, 60 Hz. Ambient: 20.5°C, 45% RH. Bandwidth: 120 kHz. Measurement Time: 1 s. Expanded Uncertainty: 5.40 dB.
The minimum margin to the limit was 10.1 dB.
Radiated Emission Data (Horizontal Polarization):
| Frequency (MHz) | QuasiPeak (dBμV/m) | Meas. Time (ms) | Bandwidth (kHz) | Height (cm) | Pol | Azimuth (deg) | Corr. (dB/m) | Margin (dB) | Limit (dBμV/m) |
|---|---|---|---|---|---|---|---|---|---|
| 31.697500 | 28.3 | 1000.0 | 120.000 | 200.0 | H | -145.0 | 24.0 | 11.7 | 40.0 |
| 133.183750 | 23.0 | 1000.0 | 120.000 | 150.0 | H | 123.0 | 18.5 | 20.5 | 43.5 |
| 248.128750 | 26.6 | 1000.0 | 120.000 | 150.0 | H | -112.0 | 19.3 | 19.4 | 46.0 |
| 260.011250 | 28.5 | 1000.0 | 120.000 | 180.0 | H | 174.0 | 20.8 | 17.5 | 46.0 |
| 518.395000 | 34.3 | 1000.0 | 120.000 | 170.0 | H | -89.0 | 25.6 | 11.7 | 46.0 |
| 850.983750 | 33.3 | 1000.0 | 120.000 | 160.0 | H | -78.0 | 29.0 | 12.7 | 46.0 |
Radiated Emission Data (Vertical Polarization):
| Frequency (MHz) | QuasiPeak (dBμV/m) | Meas. Time (ms) | Bandwidth (kHz) | Height (cm) | Pol | Azimuth (deg) | Corr. (dB/m) | Margin (dB) | Limit (dBμV/m) |
|---|---|---|---|---|---|---|---|---|---|
| 31.697500 | 29.9 | 1000.0 | 120.000 | 100.0 | V | -156.0 | 24.0 | 10.1 | 40.0 |
| 36.426250 | 29.7 | 1000.0 | 120.000 | 120.0 | V | -142.0 | 21.7 | 10.3 | 40.0 |
| 228.122500 | 26.6 | 1000.0 | 120.000 | 110.0 | V | 78.0 | 16.9 | 19.4 | 46.0 |
| 240.490000 | 31.7 | 1000.0 | 120.000 | 150.0 | V | 95.0 | 18.5 | 14.3 | 46.0 |
| 602.906250 | 30.7 | 1000.0 | 120.000 | 120.0 | V | 45.0 | 27.0 | 15.3 | 46.0 |
| 876.688750 | 33.2 | 1000.0 | 120.000 | 100.0 | V | 47.0 | 28.7 | 12.8 | 46.0 |
7. List of Test and Measurement Instruments
| Equipment | Description | Model | Manufacturer | Due Date |
|---|---|---|---|---|
| G1811378 | 3m semi-anechoic chamber | SAC3 | Frankonia | 03.12.2026 |
| G1811391 | EMI test receiver | ESCI | Rohde&Schwarz | 17.10.2025 |
| G1811425 | Bilog antenna | CBL 6112D | Teseq | 20.04.2026 |
| 9062745 | EMI measurement software | EMC32-MEB (10.60.20) | Rohde&Schwarz | N/A |
| 9061503 | Shielded enclosure | 10.055x3.605x3.000 | Frankonia | 08.11.2028 |
| 9023229 | EMI test receiver | ESR3 | Rohde&Schwarz | 03.08.2025 |
| G1824248 | Dual display multimeter | F45 | Fluke | 28.06.2025 |
| 9062744 | EMI measurement software | EMC32-E+(10.60.20) | Rohde&Schwarz | N/A |
| G1830003 | Artificial mains network | ENV432 | Rohde&Schwarz | 11.10.2025 |
8. 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)
Notes and Disclaimers
General Notes:
- Test equipment was calibrated according to the laboratory's program and meets relevant standards. Traceability is ensured by the management system.
- This document is digitally signed. Verification of legal requirements is the user's responsibility. Authenticity verification is available at go.tuv.com/digital-signature.
- Test clauses marked with * were subcontracted. Deviations from specifications are listed in the report.
- Conformity decision rule uses "Zero Guard Band Rule" and "Simple Acceptance" per ILAC G8:2019 and IEC Guide 115:2021, without considering measurement uncertainty unless otherwise specified.
Emission Test Notes:
- Conducted emission results are presented as Quasi-Peak and Average values.
- Note 1 for Conducted Emission: The highest emission level was generated under DC 20V; only this data was retained.
- Note 2 for Radiated Emission: FCC Class B limits are used as they are stricter than ICES-003:2020.
- Note 1 for Radiated Emission: Measurement was limited to 1 GHz due to internal sources being less than 108 MHz.
- Note 3 for Radiated Emission: The highest emission level was generated under DC 20V; only this data was retained.
Disclaimer: This test report relates only to the tested sample and may not be duplicated in extracts without permission. It does not grant the right to use a test mark.
