RF Exposure

FCC ID: 2AP7Z-B66954804

RF Exposure Info

Download: PDF
FCCID_4297459

RF Exposure Requirement According to KDB680106 D01 RF Exposure Wireless Charging Apps v03 (04/09/2018), the requirement of RF exposure for the Wireless Charging device shall be met. The RF exposure requirements must be determined in conjunction with the device operating characteristics, according to the mobile and portable exposure requirements in Sections 2.1091 and 2.1093 of the rules. SAR and MPE limits do not cover the frequency range for wireless power transfer applications which operate below 100 kHz and 300 kHz respectively; therefore, RF exposure compliance needs to be determined with respect to Sections 1.1307 (c) and (d) of the FCC rules. For devices designed for typical desktop applications, such a wireless charging pads, RF exposure evaluation should be conducted assuming a user separation distance of 15 cm. E and H field strength measurements or numerical modeling may be used to demonstrate compliance. Measurements should be made from all sides and the top of the primary/client pair, with the 15 cm measured from the center of the probe(s) to the edge of the device. 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. Table 1 – Limits for Maximum Permissible Exposure (MPE) Frequency range Electric field strength Magnetic field strength Power density Averaging time 2 (MHz) (V/m) (A/m) (mW/cm ) (minutes) (A) Limits for Occupational/Controlled Exposures 0.3-3.0 614 1.63 *(100) 6 2 3.0-30 1842/f 4.89/f *(900/f ) 6 30-300 61.4 0.163 1.0 6 300-1500 f/300 6 1500-100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f2) 30 30-300 27.5 0.073 0.2 30 300-1500 f/1500 30 1500-100,000 1.0 30 Note: f denotes for frequency in MHz FCC ID: 2AP7Z-B66954804

Test Method for H-field: Measurements are conducted with a magnetic field probe located 15cm surrounding away from the EUT and its associated attachments, including 20 cm above the top surface from the EUT for scanning the emissions. Test Setup: 2 3 EUT 1 4 Exposure Level Meter 15cm 5.Top of EUT 6. Bottom of EUT FCC ID: 2AP7Z-B66954804

Test Method for E-field: Measurements are conducted with a electric field probe located 15cm surrounding away from the EUT and its associated attachments, including 20 cm above the top surface from the EUT for scanning the emissions. 2 3 1 4 Exposure Level Meter 15cm 5.Top of EUT 6. Bottom of EUT FCC ID: 2AP7Z-B66954804

Test Result Charging Status: 1% All measurement at defined as f= 115kHz Magnetic Field (H-Field) strength at 15cm from the boundaries of the EUT EUT location Measured Limit (A/m) 50%of Limit Margin H-field (A/m) Front (1) 0.32 1.63 0.815 -0.495 Left (2) 0.30 1.63 0.815 -0.515 Right (4) 0.35 1.63 0.815 -0.465 Back (3) 0.34 1.63 0.815 -0.475 Bottom 0.42 1.63 0.815 -0.395 Magnetic Field (H-Field) strength at 20cm above the top surface from the EUT EUT location Measured Limit (A/m) 50%of Limit Margin (A/m) H-field (A/m) Top 0.45 1.63 0.815 -0.365 Electric Field (E-Field) strength at 15cm from the boundaries of the EUT EUT location Calculated Limit (V/m) 50%of Limit Margin (V/m) E-field (V/m) Front (1) 0.26 614.0 307.0 -306.74 Left (2) 0.25 614.0 307.0 -306.75 Right (4) 0.28 614.0 307.0 -306.72 Back (3) 0.24 614.0 307.0 -306.76 Bottom 0.40 614.0 307.0 -306.60 Electric Field (E-Field) strength at 20cm above the top surface from the EUT EUT location Measured Limit (V/m) 50%of Limit Margin (V/m) E-field (V/m) Top 0.43 614.0 307.0 -306.57 FCC ID: 2AP7Z-B66954804

Test Result Charging Status: 50% All measurement at defined as f= 115kHz Magnetic Field (H-Field) strength at 15cm from the boundaries of the EUT EUT location Measured Limit (A/m) 50%of Limit Margin H-field (A/m) Front (1) 0.35 1.63 0.815 -0.465 Left (2) 0.36 1.63 0.815 -0.455 Right (4) 0.35 1.63 0.815 -0.465 Back (3) 0.38 1.63 0.815 -0.435 Bottom 0.41 1.63 0.815 -0.405 Magnetic Field (H-Field) strength at 20cm above the top surface from the EUT EUT location Measured Limit (A/m) 50%of Limit Margin (A/m) H-field (A/m) Top 0.42 1.63 0.815 -0.395 Electric Field (E-Field) strength at 15cm from the boundaries of the EUT EUT location Calculated Limit (V/m) 50%of Limit Margin (V/m) E-field (V/m) Front (1) 0.25 614.0 307.0 -306.75 Left (2) 0.25 614.0 307.0 -306.75 Right (4) 0.23 614.0 307.0 -306.77 Back (3) 0.26 614.0 307.0 -306.74 Bottom 0.38 614.0 307.0 -306.62 Electric Field (E-Field) strength at 20cm above the top surface from the EUT EUT location Measured Limit (V/m) 50%of Limit Margin (V/m) E-field (V/m) Top 0.39 614.0 307.0 -306.61 FCC ID: 2AP7Z-B66954804

Test Result Charging Status: 99% All measurement at defined as f= 115kHz Magnetic Field (H-Field) strength at 15cm from the boundaries of the EUT EUT location Measured Limit (A/m) 50%of Limit Margin H-field (A/m) Front (1) 0.33 1.63 0.815 -0.485 Left (2) 0.32 1.63 0.815 -0.495 Right (4) 0.32 1.63 0.815 -0.495 Back (3) 0.35 1.63 0.815 -0.465 Bottom 0.34 1.63 0.815 -0.475 Magnetic Field (H-Field) strength at 20cm above the top surface from the EUT EUT location Measured Limit (A/m) 50%of Limit Margin (A/m) H-field (A/m) Top 0.39 1.63 0.815 -0.425 Electric Field (E-Field) strength at 15cm from the boundaries of the EUT EUT location Calculated Limit (V/m) 50%of Limit Margin (V/m) E-field (V/m) Front (1) 0.30 614.0 307.0 -306.70 Left (2) 0.32 614.0 307.0 -306.68 Right (4) 0.25 614.0 307.0 -306.75 Back (3) 0.22 614.0 307.0 -306.78 Bottom 0.32 614.0 307.0 -306.68 Electric Field (E-Field) strength at 20cm above the top surface from the EUT EUT location Measured Limit (V/m) 50%of Limit Margin (V/m) E-field (V/m) Top 0.37 614.0 307.0 -306.63 FCC ID: 2AP7Z-B66954804

Equipment List Equipment Magnetic Field meter Registration No. EW-2140 Manufacturer NARDASAFETY Model No. ELT400 Calibration Date Mar 28, 2018 Calibration Due Date Mar 28, 2019 Equipment Electric Field Sensor Registration No. EW-1387 Manufacturer SCHAFFNER Model No. EMC20 Calibration Date Nov 6, 2017 Calibration Due Date May 6, 2019 FCC ID: 2AP7Z-B66954804


Document Created: 2019-05-23 09:51:01
Document Modified: 2019-05-23 09:51:01
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC