FCC PART 18 TEST REPORT
Report No.: 20250517G10380X-E
Product Name: Microwave Oven
Trade Names: Midea, Danby, Perfect Aire, Criterion, Black+Decker, Mainstays, Zest, Magic Chef, SHARP, SEASONS, VISSANI, Walmart, Comfee
Applicant: Guangdong Midea Kitchen Appliances Manufacturing Co., Ltd.
Received Date: 2025.05.08
Test Data: 2025.05.08-2025.05.16
Issued by: CCIC Southern Testing Co., Ltd.
1. GENERAL INFORMATION
1.1 GENERAL DESCRIPTION OF EUT
EUT Name: Microwave Oven
Model Designations: XM720CYY-PM, XM720CYYY-PM, NS-7CM6-BK, S-7CM6-SS, NS-7CM6-WH, EM720CYY-S, EM720CYY-BMS, EM720CYY-WMS, XM720CYY- M0A, XM720CYYY-PM0A, DBMW0720B**, DBMW0721B**, DMW0722B**,1PMB07, 1PMW07, CCM07M1*, FDBD202GS-BLK, MS61W100027883, MS61R100027883, MS61B100027883, EM720C2WB, ZE07120S, MMC07S1ABB, MMC07S1AWW, HMM770W2, HMM770B2, SMC076#K#, EM720CNF-PM-CL, EM720CNF-PMB-CL, EM720C2KH, HMM770W3, HMM770B3, EM720CPN-SS, MMC07B12BWWC, MMC07B12BBBC, MMC07B12BSTC, EM720CNF-PMB-CL, EM720CNF-PM-CL, MMO20C2CV-EMPABK, MMO20C2CV-EMPAWH, MMC07S2AST, MMC07S2ABB, MMC07S2AWW, AM720C2RA-A, AM720C2RA-G, AM720C2RA-R, EM720C2KHBCL, EM720C2KHWCL.
Model Explanation: X= A or E (controller type: A=Rotating knob, E=Film keypad); M=Microwave function; 720="7" indicates 700W output power, "20" indicates 20 liters cavity capacity; C=Design No.; -P=Paint cavity; M=Loop change sequence code. YY/YYY/**/*/# may be 0-9, A-Z or blank, indicating different appearance. All models are identical to EM720C2RD-PM except for model name, trademark, and appearance. EM720C2RD-PM was selected for final testing.
Power Supply: 120VAC/60Hz
Rated Input Power (microwave): 1050W
Rated Output Power (microwave): 700W
Frequency: 2450MHz (Class B / Group 2)
Magnetron Model: 2M217J
Magnetron Manufacturer: WITOL
Description of Support Units (Loads):
- Power output measurement: 1000 ml water in a beaker at the center.
- Frequency measurement: 1000 ml water in a beaker at the center.
- Radiation on second and third harmonic: Two loads (700 ml and 300 ml water), tested with beaker at center and front corner.
- All other measurements: 700 ml water, with beaker at the center.
EUT Setups: Primarily Microwave heating mode (According to FCC PART 18).
Note: This is an updating report based on original report #: "20231117G16518X-E", re-tested from May 8th to May 16th, 2025. Differences include modifications to the mother board's peripheral circuit (non-RF) and some components/layout, while the magnetron and other circuits remain the same.
1.2 Test Standards and Results
Testing performed according to 47 CFR Part 18 (Radio Frequency Devices).
| Identity | Document Title | Test Item/Section | Class / Severity | Result |
|---|---|---|---|---|
| 1 | 47 CFR Part 18 | Conducted Emission (150 kHz to 30 MHz) | 18.307(b) | PASS |
| 2 | 47 CFR Part 18 | Radiated Emission (30 MHz to 1 GHz) | 18.305(b) | PASS |
1.3 Facilities and Accreditations
1.3.1 Facilities
CCIC-SET Lab 1 Address: Electronic Testing Building, No.43, Shahe Road, Xili Street, Nanshan District, Shenzhen, Guangdong, China
- FCC-Registration No.: CN1283
- ISED Registration: 11185A, CAB number: CN0064
- A2LA Accreditation: Code 5721.01 (ISO/IEC 17025)
- CNAS Accreditation: L1659 (ISO/IEC 17025)
CCIC-SET Lab 4 Address: No.125, Hongmei Section, Wangsha Road, Hongmei Town, Dongguan City, Guangdong Province, China
- CNAS Accreditation: L1659 (ISO/IEC 17025)
1.3.2 Test Environment Conditions
Environmental conditions during measurement:
- Temperature: 15°C - 35°C
- Relative Humidity: 25% - 75%
- Atmospheric Pressure: 86kPa - 106kPa
1.3.3 Measurement Uncertainty
Calculated using ISO GUM methods:
- Conducted Emission: Uc = 3.2 dB (k=2)
- Radiated Emission (30MHz~1GHz): Uc = 5.8 dB (k=2)
- Radiated Emission (1~18GHz): Uc = 5.1 dB (k=2)
- Radiation Hazard Measurement: Uc = 2.4 dB (k=2)
2. EQUIPMENTS LIST
| Description | Manufacturer | Model | Serial No. | Calibration Date | Calibration Due. Date |
|---|---|---|---|---|---|
| Test Receiver | Rohde & Schwarz | ESR3 | A181103297 | 2025.03.18 | 2026.03.17 |
| LISN | ROHDE&SCHWARZ | NSLK 8127 | A181003230 | 2025.07.25 | 2026.07.25 |
| Shield Room | Xinju Electronics | L9000*W4500* H3100 | A0501375 | 2023.07.30 | 2026.07.29 |
| EMI Test Receiver | ROHDE&SCHWARZ | ESIB7 | A150402240 | 2025.01.13 | 2026.01.12 |
| Broadband Ant. 3M Anechoic Chamber | ETC | MCTD2786 | A0412375 | 2024.06.01 | 2025.05.31 |
| EMI Test Receiver 5M Anechoic Chamber | Albatross | SAC-3MAC 9*6*6m | A180502935 | 2024.02.27 | 2027.02.27 |
| EMI Horn Ant. | ROHDE&SCHWARZ | MCTD-1209 | A0304210 | 2025.04.25 | 2026.04.24 |
| Spectrum Analyzer Portable | Albatross | SAC-5MAC 12.8x6.8x6.4m | A150402241 | 2023.08.02 | 2026.08.01 |
| Spectrometer Prode | ROHDE&SCHWARZ | ESW26 | A180502935 | 2024.05.18 | 2025.05.17 |
| Spectrum Analyzer Portable | ROHDE&SCHWARZ | FSH8 | A140401672 | 2025.01.24 | 2026.01.23 |
| Spectrometer Prode | ROHDE&SCHWARZ | TSEMF-B1 | A140401671 | 2025.01.24 | 2026.01.23 |
3. EMC EMISSION TEST
3.1 Test Procedure
Test Requirement: 47 CFR PART 18
Test Method: FCC/OST MP-5:1986
Power Supply: 120VAC/60Hz
Frequency Range: 2400-2500MHz
Detector: Peak
Limit: ISM equipment may be operated at any frequency above 9KHz; the band 2400-2500MHz is allocated for ISM equipment.
3.1.1 Frequency For Normal Voltage
The operating frequency was measured using a spectrum analyzer. With the EUT at room temperature, a 1000mL water load was placed in the center of the oven and operated at maximum output power. The fundamental operating frequency was monitored until the water load was reduced to 20 percent of the original load.
3.1.2 Frequency For Line Voltage
The EUT was warmed up by at least 10 minutes of use with a 1000mL water load at room temperature. The operating frequency was then monitored as the input voltage was varied between 80 and 125 percent of the nominal rating.
3.1.3 Measurement data
| Operating Mode | Frequency (MHz) |
|---|---|
| Normal Voltage | 2432.5-2469.8 |
| Line Voltage | 2433.6-2470.1 |
3.2 RADIATION HAZARD TEST
3.2.1 Test Setup
The EUT was set up according to FCC MP-5 and FCC Part 18. A microwave leakage meter was used to measure radiation leakage with the oven door closed. A 700 mL water load in a beaker was placed in the center of the oven, and the microwave oven was set to maximum power. The maximum leakage was recorded.
3.2.2 Limit
A maximum of 1.0 mW/cm² is allowed per applicable FCC standards.
3.2.3 Test results
| Test location | Test result (mW/cm²) | Limit (mW/cm²) | Verdict |
|---|---|---|---|
| Left side | 0.25 | 1.0 | Pass |
| Right side | 0.32 | 1.0 | Pass |
| Front | 0.41 | 1.0 | Pass |
| Rear | 0.22 | 1.0 | Pass |
No microwave leakage exceeding 0.41 mW/cm² was observed at any point 5cm or more from the external surface of the oven.
3.3 RF OUTPUT POWER MEASUREMENT
3.3.1 Test Standard
Test Requirement: 47 CFR PART 18
Test Method: FCC/OST MP-5:1986
Power Supply: 120VAC/60Hz
3.3.2 EUT Operating mode
The EUT was tested in microwave mode at full power. 1000 g ±5 g of water was added to a container. The food support was placed in the center. The oven was operated, and the time for the water temperature to reach 20 ±2°C was measured. The oven was then switched off, and the final water temperature was measured within 60 seconds.
3.3.3 Test Data
| Mass of Water (g) | Mass of the container (g) | Ambient temperature (°C) | Initial temperature (°C) | Final temperature (°C) | Heating Time (S) | Output Power (Watt) |
|---|---|---|---|---|---|---|
| 1000 | 377 | 23.1 | 10.8 | 19.7 | 60 | 609.32 |
4. CONDUCTED EMISSION
4.1.1 Conducted Emission Limit
| Frequency range (MHz) | Conducted Limit (dBµV) | |
|---|---|---|
| Quasi-peak | Average | |
| 0.15 - 0.50 | 66 to 56 | 56 to 46 |
| 0.50 - 5 | 56 | 46 |
| 5 - 30 | 60 | 50 |
Note: The limit decreases linearly with the logarithm of the frequency in the range 0.15 MHz to 0.5 MHz. The lower limit is applicable at the transition frequency.
4.1.2 Test Procedure
The EUT was placed on an 0.8m high insulating table, 0.4m away from the grounded conducting wall. The EUT was connected to the power mains through a LISN (Line Impedance Stabilization Network) providing 50/50µH coupling impedance. A common antenna was used for the call between the EUT and the System Simulator (SS). A Pulse Limiter protected the measuring instrument. Test system factors were calibrated to correct readings.
4.1.3 Test Setup
The test setup involved placing the EUT on an insulating table. A LISN was connected to the EUT's power input and to a receiver. The setup maintained specified distances from walls and ground.
Test Result: Mains terminal disturbance voltage
Setup 1, L phase
| Frequency (MHz) | Quasi Peak (dBµV) | Average (dBµV) | Correction (dB) | Margin QPK (dB) | Limit QPK (dBµV) | Margin AV (dB) | Limit - AV (dBµV) |
|---|---|---|---|---|---|---|---|
| 0.150000 | 51.41 | 19.99 | 10.6 | 14.59 | 66.00 | 36.01 | 56.00 |
| 0.307500 | 49.78 | 21.23 | 10.6 | 10.26 | 60.04 | 28.81 | 50.04 |
| 0.339000 | 52.92 | 20.95 | 10.6 | 6.30 | 59.23 | 28.28 | 49.23 |
| 0.370500 | 51.71 | 25.09 | 10.7 | 6.78 | 58.49 | 23.40 | 48.49 |
| 0.393000 | 50.11 | 23.38 | 10.7 | 7.89 | 58.00 | 24.62 | 48.00 |
| 0.442500 | 45.98 | 17.81 | 10.7 | 11.03 | 57.01 | 29.21 | 47.01 |
(Plot A: L Phase)
Setup 1, N phase
| Frequency (MHz) | Quasi Peak (dBµV) | Average (dBµV) | Correction (dB) | Margin QPK (dB) | Limit QPK (dBµV) | Margin AV (dB) | Limit - AV (dBµV) |
|---|---|---|---|---|---|---|---|
| 0.235500 | 38.87 | 20.13 | 10.6 | 23.38 | 62.25 | 32.12 | 52.25 |
| 0.339000 | 40.37 | 15.80 | 10.6 | 18.86 | 59.23 | 33.42 | 49.23 |
| 0.352500 | 39.98 | 15.74 | 10.6 | 18.93 | 58.90 | 33.17 | 48.90 |
| 0.388500 | 38.23 | 13.79 | 10.6 | 19.87 | 58.10 | 34.31 | 48.10 |
| 0.402000 | 36.69 | 11.49 | 10.6 | 21.12 | 57.81 | 36.32 | 47.81 |
| 2.116500 | 36.41 | 10.42 | 10.4 | 19.59 | 56.00 | 35.58 | 46.00 |
(Plot B: N Phase)
Test Result: PASS
5. RADIATED EMISSION
5.1.1 Radiated Emission Limits
ISM equipment operation is permitted unlimited radiated energy in the specified frequency bands (18.301).
Field strength levels of emissions outside specified bands:
- RF Power generated (watts) | Field strength limit (µV/m) @300m
- Below 500W: 25 µV/m
- 500W or more: 25*SQRT(power/500) µV/m
For Power = 609.32W, the limit at 3m distance was calculated.
5.1.2 Test Setup
For radiated emissions from 30MHz to 1GHz: The EUT was placed on a rotating table 0.8 meters above the ground at a 3-meter open area test site. The test antenna height varied between 1 m to 4 m, with both horizontal and vertical polarizations tested.
For radiated emissions above 1GHz: Similar setup with appropriate antenna height and polarization adjustments.
5.1.3 Test Procedure
Measurements were taken at a 3-meter distance. The EUT was placed on a rotating table 0.8 meters above the ground. The table was rotated 360 degrees to find the highest radiation point. The height of the test antenna was varied between 1m to 4m. Both horizontal and vertical polarizations of the antenna were used. Initial pre-scanning used a peak detector; significant peaks were then re-measured using a Quasi Peak detector. If peak mode measurements complied with QP limits, no further QP measurement was performed. Both horizontal and vertical antenna polarities were tested, and emissions were reported based on the worst-case orthogonal axis.
Test Result: Radiation disturbances
Antenna polarization: Setup 1, Horizontal (30MHz - 1GHz)
| Frequency (MHz) | Quasi Peak (dBµV/m) | Bandwidth (kHz) | Antenna height (cm) | Limit (dBµV/m) | Margin (dB) | Antenna | Verdict |
|---|---|---|---|---|---|---|---|
| 55.28 | 36.02 | 120.000 | 100.0 | 68.82 | 32.80 | Horizontal | Pass |
| 72.76 | 30.32 | 120.000 | 100.0 | 68.82 | 38.50 | Horizontal | Pass |
| 99.96 | 32.49 | 120.000 | 100.0 | 68.82 | 36.33 | Horizontal | Pass |
| 103.88 | 37.16 | 120.000 | 100.0 | 68.82 | 31.66 | Horizontal | Pass |
| 251.60 | 39.06 | 120.000 | 100.0 | 68.82 | 29.76 | Horizontal | Pass |
| 376.00 | 31.91 | 120.000 | 100.0 | 68.82 | 36.91 | Horizontal | Pass |
Antenna polarization: Setup 1, Vertical (30MHz - 1GHz)
| Frequency (MHz) | Quasi Peak (dBµV/m) | Bandwidth (kHz) | Antenna height (cm) | Limit (dBµV/m) | Margin (dB) | Antenna | Verdict |
|---|---|---|---|---|---|---|---|
| 51.40 | 40.79 | 120.000 | 100.0 | 68.82 | 28.03 | Vertical | Pass |
| 63.04 | 42.32 | 120.000 | 100.0 | 68.82 | 26.50 | Vertical | Pass |
| 88.32 | 24.90 | 120.000 | 100.0 | 68.82 | 43.92 | Vertical | Pass |
| 253.56 | 30.05 | 120.000 | 100.0 | 68.82 | 38.77 | Vertical | Pass |
| 292.44 | 29.98 | 120.000 | 100.0 | 68.82 | 38.84 | Vertical | Pass |
| 368.24 | 31.77 | 120.000 | 100.0 | 68.82 | 37.05 | Vertical | Pass |
Above 1GHz, Setup 1
| Vertical Polarity | ||||||
|---|---|---|---|---|---|---|
| NO. | Freq. [MHz] | Level [dBµV/m] | Factor [dB] | Limit [dBµV/m] | Margin [dB] | Angle [°] |
| 1 | 2492.12 | 57.90 | -13.08 | 68.82 | 10.92 | 28 |
| 2 | 3503.88 | 48.58 | -9.95 | 68.82 | 20.24 | 205 |
| 3 | 4732.43 | 52.00 | -5.51 | 68.82 | 16.82 | 326 |
| 4 | 7436.11 | 54.28 | -0.40 | 68.82 | 14.54 | 101 |
| 5 | 10760.44 | 54.63 | 2.77 | 68.82 | 14.19 | 254 |
| 6 | 17647.16 | 51.64 | 11.78 | 68.82 | 17.18 | 295 |
| Horizontal Polarity | ||||||
|---|---|---|---|---|---|---|
| NO. | Freq. [MHz] | Level [dBµV/m] | Factor [dB] | Limit [dBµV/m] | Margin [dB] | Angle [°] |
| 1 | 1816.20 | 38.00 | -14.40 | 68.82 | 30.37 | 16 |
| 2 | 2402.85 | 51.41 | -13.03 | 68.82 | 16.96 | 345 |
| 3 | 4796.20 | 55.16 | -5.65 | 68.82 | 13.21 | 197 |
| 4 | 7682.67 | 52.70 | -0.52 | 68.82 | 15.67 | 342 |
| 5 | 10879.47 | 50.94 | 3.11 | 68.82 | 17.43 | 243 |
| 6 | 17630.16 | 52.16 | 11.90 | 68.82 | 16.21 | 227 |
Verdict: PASS (All emissions were within the specified limits)
APPENDIX I: PHOTOGRAPHS OF EMC TEST CONFIGURATION
The appendix contains photographs illustrating the test setups used for EMC testing. These include:
- Radiated Emission Measurement below 1GHz: Depicts the EUT placed on a turntable with the test antenna positioned at various heights and orientations to capture emissions.
- Radiated Emission Measurement above 1GHz: Similar setup to the below 1GHz measurement but utilizing antennas suitable for higher frequencies.
- Conducted emission at AC mains input/output port Measurement: Shows the EUT connected to a LISN, with the measurement receiver capturing conducted noise on the power lines.
- Radiation Hazard Test: Illustrates the setup for measuring microwave leakage, typically showing the EUT with a water load and a leakage meter positioned around the oven cavity.
End of the Report
