General Product Information
Product Function and Intended Use
The Equipment Under Test (EUT) is a LED lamp that supports Bluetooth, Zigbee, and Thread. This report evaluates the RF characteristics of the Thread functionality of the EUT.
Ratings and System Details
Technical Specification of EUT
| Description | Self-ballasted LED lamps |
|---|---|
| Product Name | LED2401G5NA |
| Operation Voltage | AC 120V, 60Hz |
| Test Voltage | DC 3.3V (for RF conducted and radiated tests) AC 120V, 60Hz (for conducted emission test) |
| RF Technical | 1) BLE 2) Zigbee 3) Thread |
Technical Specification of Thread
| RF IC | SiMG301 |
|---|---|
| Frequency Range | 2405~2480MHz |
| Modulation Type | OQPSK |
| Antenna Type | Monopole Antenna |
| Antenna Gain | 1.18 dBi (declared by client) |
Operation Channel List
| Channel | Frequency [MHz] | Channel | Frequency [MHz] | Channel | Frequency [MHz] | Channel | Frequency [MHz] |
|---|---|---|---|---|---|---|---|
| 11 | 2405 | 15 | 2425 | 19 | 2445 | 23 | 2465 |
| 12 | 2410 | 16 | 2430 | 20 | 2450 | 24 | 2470 |
| 13 | 2415 | 17 | 2435 | 21 | 2455 | 25 | 2475 |
| 14 | 2420 | 18 | 2440 | 22 | 2460 | 26 | 2480 |
Independent Operation Modes
Test frequencies include the lowest channel (2405 MHz), middle channel (2445 MHz), and highest channel (2480 MHz). The basic operation modes are: A. Thread transmitting mode, B. Radio operating mode.
Noise Generating and Noise Suppressing Parts
Refer to the Circuit Diagram (not provided in this text-based output).
Test Environment and Equipment
Test Sites
Testing was conducted at TÜV Rheinland (Shanghai) Co., Ltd., located at 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 facilities are accredited by the FCC (registration number 930979) and Innovation, Science and Economic Development Canada (filing number 33038).
List of Test and Measurement Instruments
| Equip. | Description | Model | Manufacturer | Due Date |
|---|---|---|---|---|
| EMC-C-196 | Wireless connectivity tester | CMW270 | Rohde & Schwarz | 23.08.2025 |
| EMC-C-302 | Signal generator | SMB100B (6 GHz) | Rohde & Schwarz | 10.12.2025 |
| EMC-C-303 | Vector Signal generator | SMW200A | Rohde & Schwarz | 10.12.2025 |
| EMC-C-304 | OSP | OSP-B157W8 | Rohde & Schwarz | 10.12.2025 |
| EMC-C-161 | Spectrum analyser | FSV40 | Rohde&Schwarz | 15.07.2025 |
| EMC-C-018 | Double ridged horn antenna | BBHA 9120 D | Schwarzbeck | 24.03.2026 |
| EMC-C-066 | EMI test receiver | ESCI | Rohde&Schwarz | 27.10.2025 |
| EMC-C-068 | Broadband horn antenna | BBHA 9170 | Schwarzbeck | 18.06.2028 |
| EMC-C-155 | BiLog antenna | CBL 6112D | Teseq | 24.03.2026 |
| EMC-C-175 | Preamplifier | EMC051845SE | EMCI Taiwan | 24.07.2025 |
| EMC-C-176 | Preamplifier | EMC184045SE | EMCI Taiwan | 24.07.2025 |
| EMC-C-001 | 3 m semi-anechoic chamber | SAC3 | Frankonia | 03.12.2026 |
| EMC-C-141 | Shielded enclosure | 10.055x3.605x3.000 | Frankonia | 08.11.2028 |
| EMC-C-195 | EMI test receiver | ESR3 | Rohde&Schwarz | 03.08.2025 |
| EMC-C-190 | Artificial mains network | ENV432 | Rohde&Schwarz | 11.10.2025 |
| EMC-S-036 | RF measurement software | WMS32-WB (11.40.00) | Rohde&Schwarz | NA |
| EMC-S-032 | EMI measurement software | EMC32-E+ (10.60.20) | Rohde&Schwarz | NA |
| EMC-S-028 | EMI measurement software | EMC32-MEB (10.60.20) | Rohde&Schwarz | NA |
Traceability
All measurement equipment calibrations are traceable to NIST or equivalent nationally recognized standards organizations.
Calibration
Equipment requiring calibration is calibrated periodically by the manufacturer or according to manufacturer's specifications. All equipment is verified for proper performance on a regular basis using in-house standards or comparisons.
Measurement Uncertainty
| Measurement Type | Frequency | Uncertainty |
|---|---|---|
| Antenna Port Conducted Emission | < 1GHz | ±0.39dB |
| > 1GHz | ±0.68dB | |
| Conducted Emission | 150kHz - 30MHz | ±2.33dB |
| 9kHz - 30MHz | ±2.93dB | |
| Radiated Emission | 30MHz - 1GHz | ±5.34dB |
| > 1GHz | ±5.40dB |
Test Results Summary
The EUT (LED2401G5NA) passed all tested RF parameters.
- Antenna Requirement: Pass
- 6dB & 99% Bandwidth: Pass
- Output Power: Pass
- Power Spectral Density: Pass
- Conducted Band Edge and Out-of Band Emissions: Pass
- Conducted Emission: Pass
- Radiated Band-Edge: Pass
- Radiated Spurious Emission: Pass
Conducted Testing
Antenna Requirement
The EUT features an internal monopole antenna with a gain of 1.18 dBi, permanently attached and not replaceable. This configuration complies with FCC 15.203, 15.204, and RSS-Gen 6.4 requirements.
6dB & 99% Bandwidth
Tests were performed at 2405MHz, 2445MHz, and 2480MHz. The 6dB bandwidth was measured to be 1.700 MHz for all frequencies, meeting the limit of 0.500 MHz. The 99% occupied bandwidth was measured as 2.250 MHz for all frequencies.
Peak Output Power
Peak conducted output power measurements at 2405MHz, 2445MHz, and 2480MHz were 8.3 dBm, 8.4 dBm, and 7.9 dBm respectively, all well within the 30 dBm limit. The EIRP was calculated to be below 4W (36dBm).
Power Spectral Density
Power Spectral Density measurements at 2405MHz, 2445MHz, and 2480MHz were -3.291 dBm, -3.241 dBm, and -3.863 dBm respectively, all below the 8.0 dBm limit.
Conducted Emission
Conducted emission tests were performed according to FCC Part 15.207(a) and RSS-Gen Clause 8.8. The results, presented in Figures 4 and 5, indicate compliance with the specified limits for both Line L and Line N.
Radiated Testing
Radiated Band-Edge
Radiated band-edge measurements were conducted at 2405MHz and 2480MHz for both horizontal (H) and vertical (V) polarizations. The results, shown in Figures 6-9, demonstrate compliance with the relevant FCC and RSS standards.
Radiated Spurious Emission
Radiated spurious emissions were tested across various frequency ranges (30MHz to 18GHz) for 2405MHz, 2445MHz, and 2480MHz, as depicted in Figures 10-12. No emissions were found in the 18GHz to 25GHz range. All tested emissions were within the specified limits.
