MVARS970-001TCordless FM Stereo Headphone System

LG Electronics Inc., EMI Laboratory 391-2 Gaeumjeong - Dong, Changwon City, Gyeongnam, Korea 641-711 REPORT of MEASUREMENT of ELECTROMAGNETIC INTERFERENCE TESTING Issued: January 19,1999 1. Name of Applicant: LG Electronics Inc. 2. Address of Applicant: 6133 North River Road Suite, 1100 (Riverwary Plaza) Rosemont, IL 60018 3. Equipment Under Test: LG Electronics Inc., Microwave Oven Model MS-74ME with Magnetron Type 2M213 by LG Electronics Inc.. 4. Power Supply: 120 V ac, 60 Hz 5. Test Requirements: CFR Title 47, Part 18 6. Test Procedure: OST MP-5 7. Instrument Used: Hioki Digital Power High Test Model 3181-01 Holaday Industries Inc. Microwave Survey Meter Model 1700 Electro Metrics Field Intensity Meter Model EMC-30 MKIV Electro Metrics Field Intensity Meter Model EMC-60 MKIV Electro Metrics Metering Module CRM-30 Hewlett Packard Frequency Counter 5350A Hewlett Packard Sweep Oscillator 8350B 8. Test Condition: The Equipment Under Test (EUT) was tested while operating at maximum RF output power. Loads of water in a glass beaker was used in amount specified by Test Procedure. 1/7 FCC ID : BEJS070MF 9. Results of Testings: A. Input Power Input Power was measured using a Wattmeter. A 275 ml water load was placed in the center of the oven and the oven was operated at full output power for 6 minutes after which the reading was taken. A 275 ml water load was chosen for its compatibility with the UL procedure used by manufacturers to determine our input ratings. Voltage Current Input PowerManufacturer’s Rating 120 V ac, 60 Hz9.25 A1040 W9.3 A B. RF Power Output The Calorimetric Method was used to determine maximum output power. A 1000 ml water load was placed in the center of the oven. A mercury thermometer was used to measure temperature rise. Quantity of WaterStarting Temperature Final TemperatureElapsed Time 1000 ml20.0 °C37.3 °C120 Sec (4.2 Joules/Cal) X (Volume in ml) X (Temperature Rise) Power (W) = Time in Seconds 4.2 x 1000 x 17.3 Power (W) = 120 Power (W) = 605.5 Watts 2/7 FCC ID : BEJS070MF C. Frequency Measurements The fundamental operating frequency was measured with a substitution method using the Electro Metrics receiver, Hewlett Packard Sweep Oscillator and Frequency Counter. The receiver was turned to the maximum amplitude at the oven operating frequency. The Sweep Oscillator was substituted for operating the antenna and turned to the same frequency as the receiver. The frequency of the generator was determined using the frequency counter. The frequency was observed over a period of time, and with line voltage variation. The maximum frequency permitted in Part 18 is maximum 2.500 GHz and the minimum 2.400 GHz. No out-of-band frequency measurement was observed. Variation of Frequency With Time (1000 ml reduced to 200 ml) Maximum Frequency Observed: 2.466GHz Minimum Frequency Observed: 2.446 GHz Variation of Frequency With Line Voltage (96 Volts to 150 Volts AC) Maximum Frequency Observed: 2.470 GHz Minimum Frequency Observed: 2.448 GHz D. Microwave Leakage Radiation leakage was measured in the as-received condition with the oven door closed using a microwave leakage meter. No power greater than 0.18 mW/cm square was observed at any location on the enclosure of the oven. A maximum of 1.0 mW/cm square is allowed in accordance with UL 923 standard. Hence, microwave leakage in the as-received condition with the oven door closed, did not exceed the specified limit. 3/7FCC ID : BEJS070MF E. Radiated Emissions Radiated emission was measured over a frequency range of 100 MHz to 10 GHz. For measurements the EUT was get set up in an Shielded Anechoic Chamber. The EUT was supported by a wood table, 1 m high in both cases, measurement above 1 GHz and below 1 GHz. The results of measurements above 1 GHz are shown on Data Page 1. Maximum readings were recorded after variations in antenna polarization, antenna height, EUT orientation, load location, and load volume. Readings were taken with the antenna 3 meters away from the EUT. Field intensity was then extrapolated to a 300 meters distance by multiplying by a factor of 0.01 as described in Section 2.2.6 of MP-5. No over-limit radiated emissions were discovered. The results of measurements below 1 GHz are found on Data Page 2 and 3. They represent horizontal and vertical antenna polarization at 3 meters respectively. 10. Test Engineer: Mr. S. G. PARK Reviewed By: Mr. S. Y. KIM 4/7 FCC ID : BEJS070MF Issued: January 19, 1999 LABORATORY MEASUREMENTS ABOVE 1 GHz Data Page 1 Date Tested: January 11, 1999 Equipment Under Test (EUT): Microwave Oven Model MS-74ME Mode of Operating (DUT): Maximum RF Power Test Requirements: CFR Title 47, Part 18 Test Equipment: Electro-Metrics FIM. EMC-60MKIV Antenna: Double Ridged Guide Antenna RGA-180 Detector Mode: Average Bandwidth: 1 MHz Measurement Distance: 3 meters FREQ. (GHz) Antenna Factor (dB) Cable Factor (dB) Load (ml) Load Locating Meter Reading (dBμV) Field Intensity @ 3 m dBμV/m Field Intensity @ 3 m (μV/m) Field Intensity @ 300 m (μV/m) FCC Limit @ 300 m (μV/m) 2.3929.40.6700Center18.247.9248.32.4827.5 2.5129.60.6700Center11.441.3116.11.1627.5 4.9034.40.9700Center24.158.6851.18.5127.5 4.9034.40.9700RF24.559.0891.38.9127.5 4.9034.40.9300Center24.759.2912.09.1227.5 4.9034.40.9300RF26.0960.51059.310.5927.5 7.3536.81.2700Center5.242.1127.41.2727.5 7.3536.81.2700RF7.644.5167.91.6827.5 7.3536.81.2300Center7.244.1160.31.6027.5 7.3536.81.2300RF7.744.6169.81.7027.5 9.8038.01.5700Center5.745.0177.81.7827.5 Note: RF = Right Front Corner 5/7 FCC ID : BEJS070MF Issued: January 19, 1999 LABORATORY MEASUREMENTS BELOW 1 GHz Data Page 2 Date Tested: January 11, 1999 Manufacturer: LG Electronics Inc. Product Type: Household Microwave Oven Model No.: MS-74ME Mode of Operating: Maximum RF Power Test Requirements: CFR Title 47, Part 18 Test Equipment: Electro-Metrics FIM EMC-30MKIV Electro-Metrics Metering Module CRM-30 Detector Mode: Peak Measurement Distance: 3 meters Antenna: Electro-Metrics Biconical Antenna BIA-25, …

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