CHR0661 Wireless Charger RF Exposure Info MPE Report Salom Electric (Xiamen) Co., Ltd.
Salom Electric (Xiamen) Co., Ltd. Wireless Charger
FCC ID : 2ARXUCHR0661 IC: 24563-CHR0661 1.1.Measuring Standard FCC CFR 47 Part 1(1.1310) KDB 680106 D01 v03 RSS-102 Issue 5 1.2.Requirements The EUT does comply with item 5(b) of KDB 680106 D01 v03 1) Power transfer frequency is less than 1MHz 2) Output power from each primary coil is less than or equal to 15 watts. 3) The transfer system includes only single primary and secondary coils. This includes charging systems that may have multiple primary coils and clients that able to detect and allow coupling only between individual pair of coils. 4) Client device is inserted in or placed directly in contact with the transmitter. 5) Mobile exposure conditions only (portable exposure conditions are not covered by this exclusion) 6) The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface from all simultaneous transmitting coils are demonstrated to be less than 50% of the MPE limit. 1.3.Test Configuration 1) The field strength of both E-field and H-field was measured at 15cm using the equipment list above for determining compliance with the MPE requirements of FCC Part 1.1310. 2) The RF power density was measured at Under maximum load test 3) Maximum E-field and H-field measurements were made 15cm from each side of the EUT. Along the side of the EUT and still 15cm away from the edge of the EUT, the field probes were positioned at the location where there is maximum field strength. The maximum E-field and H-field is reported below. 4) This device uses a wireless charging circuit for power transfer operating at the frequency of 110 –148kHz. Thus, the 300kHz limits were used: E-field Limit = 614 (V/m); H-field limit = 1.63 (A/m). 1.4.Test Procedure 1) The RF exposure test was performed in anechoic chamber. 2) The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface 3) The highest emission level was recorded and compared with limit as soon as measurement of each points (A, B, C, D, E) were completed. 4) The EUT was measured according to the dictates of KDB 680106 D01 v03. Remark: The EUT’s test position A, B, C, D, and E is valid for the E and H field measurements. 1.5.Test Setup 1.6.Limits Remark: Emissions between 100 kHz to 300 kHz should be assessed versus the limits at 300 kHz in Table 1 of Section 1.1310: 614 V/m and 1.63 A/m 1.7.Measuring Device and Test Equipment For MPE Measurement Item 1. 2. 3. Equipment Manufacturer E-Field Probe Narda (100kHz-60GHz) H-Field Probe Narda (300KHz-30MHz) Broadband Field Meter Narda Model No. Serial No. Last Cal. NBM-520 D-0830 Oct. 18, 2018 Cal. Interval 1 Year 2300/90.10 B-0137 Jan. 06, 2018 1 Year NBM-550 Q201455 Jan. 06, 2018 1 Year 1.8.Measuring Results Table 1: E-Field Strength at 15 cm from the edges surrounding the EUT and 20cm from the top surface of the EUT EUT Test Mode 1% Battery Level 50% Battery Level 99% Battery Level Measured E-Field Strength Values (V/m) Test Position 0.62 Test Test Test Position Position Position 0.66 0.62 0.64 Test Position 0.63 50% Limit (V/m) Limit (V/m) 307 614 0.60 0.64 0.63 0.64 0.59 307 614 0.63 0.62 0.58 0.61 0.60 307 614 Table 2: H-Field Strength at 15 cm from the edges surrounding the EUT and 20cm from the top surface of the EUT EUT Test Mode 1% Battery Level 50% Battery Level 99% Battery Level Measured H-Field Strength Values (A/m) Test Position 0.451 Test Test Test Position Position Position 0.449 0.446 0.450 Test Position 0.449 50% Limit (A/m) Limit (A/m) 0.815 1.63 0.450 0.450 0.445 0.447 0.447 0.815 1.63 0.449 0.447 0.445 0.448 0.448 0.815 1.63 Remark: The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface from all simultaneous transmitting coils are demonstrated to be less than 50% of the MPE limit. ***** End of Test Report *****
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