RF Exposure

FCC ID: N89-NU361

RF Exposure Info

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FCCID_2582817

Report No.: FR530540 Appendix B. Maximum Permissible Exposure FCC ID: N89-NU361 Page No. : B1 of B4

Report No.: FR530540 1. Maximum Permissible Exposure 1.1. Applicable Standard Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device whereby that distance of at least 0.2 m is normally maintained between the user and the device. (A) Limits for Occupational / Controlled Exposure Averaging Time Frequency Range Electric Field Magnetic Field Power Density (S) |E|²,|H|² or S (MHz) Strength (E) (V/m) Strength (H) (A/m) (mW/ cm²) (minutes) 0.3-3.0 614 1.63 (100)* 6 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 Averaging Time Frequency Range Electric Field Magnetic Field Power Density (S) |E|²,|H|² or S (MHz) Strength (E) (V/m) Strength (H) (A/m) (mW/ cm²) (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz ; *Plane-wave equivalent power density 1.2. MPE Calculation Method E (V/m) ＝ 30  P  G Power Density: Pd (W/m²) ＝ E2 d 377 E ＝ Electric field (V/m) P ＝ Average RF output power (W) G ＝ EUT Antenna numeric gain (numeric) d ＝ Separation distance between radiator and human body (m) The formula can be changed to Pd ＝ 30  P  G 377  d 2 From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. FCC ID: N89-NU361 Page No. : B2 of B4

Report No.: FR530540 1.3. Calculated Result and Limit Exposure Environment: General Population / Uncontrolled Exposure For 5GHz Band (NII): Antenna Type : PIFA Antenna Conducted Power for IEEE 802.11a : 22.23dBm The maximum Limit of Antenna Power Distance Test Freq. Antenna combined Average Power Gain Density (S) Test Result (m) (MHz) Gain (dBi) Output Power Density (S) (numeric) (mW/cm²) (dBm) (mW) (mW/cm²) 0.2 5580 3.97 2.4946 22.2259 166.9532 0.082898 1 Complies For 2.4GHz Band: Antenna Type : PIFA Antenna Conducted Power for IEEE 802.11b: 21.82 dBm Average Output Limit of Antenna Power Distance Test Freq. Antenna Power Power Gain Density (S) Test Result (m) (MHz) Gain (dBi) Density (S) (numeric) (dBm) (mW) (mW/cm²) (mW/cm²) 0.2 2437 1.21 1.3213 21.8168 151.9435 0.039961 1 Complies For Buletooth: Antenna Type : PIFA Antenna Max Conducted Power for Bluetooth EDR (8DPSK) 3Mbps : 4.81 dBm Average Output Limit of Antenna Power Distance Test Freq. Antenna Power Power Gain Density (S) Test Result (m) (MHz) Gain (dBi) Density (S) (numeric) (dBm) (mW) (mW/cm²) (mW/cm²) 0.2 2441 4.12 2.5823 4.8083 3.0258 0.001555 1 Complies Antenna Type : PIFA Antenna Max Conducted Power for Bluetooth 4.0 : 0.82 dBm Average Output Limit of Antenna Power Distance Test Freq. Antenna Power Power Gain Density (S) Test Result (m) (MHz) Gain (dBi) Density (S) (numeric) (dBm) (mW) (mW/cm²) (mW/cm²) 0.2 2442 4.12 2.5823 0.8200 1.2078 0.000621 1 Complies FCC ID: N89-NU361 Page No. : B3 of B4

Report No.: FR530540 Conclusion: Both of the WLAN 2.4GHz Band and Bluetooth can transmit simultaneously, the formula of calculatedthe MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density Therefore, the worst-case situation is 0.039961 / 1 + 0.001555 / 1 = 0.041516, which is less than “1”. This confirmed that the device complies. Conclusion: Both of the WLAN 5GHz Band and Bluetooth can transmit simultaneously, the formula of calculatedthe MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density Therefore, the worst-case situation is 0.082898 / 1 + 0.001555 / 1= 0.084453, which is less than “1”. This confirmed that the device complies. FCC ID: N89-NU361 Page No. : B4 of B4


Document Created: 2015-04-13 18:56:05
Document Modified: 2015-04-13 18:56:05
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