RF Exposure Report

FCC ID: 2ANJ7-VU01

RF Exposure Info

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FCCID_3908027

Page 1 of 4 RF Exposure evaluation FCC ID: 2ANJ7-VU01 1.1Applicable Standard According to §1.1307(b)(1), 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 level in excess of the Commission’s guidelines. According to §1.1310 and §2.1091 RF exposure is calculated. KDB447498 v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 1.2 Requirement Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile device whereby a distance of 0.2m normally can be maintained between the user and the device, and below RF Permissible Exposure limit shall comply with. In accordance with KDB447498D01 for Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modeled or measured field strengths or power density, is ≤ 1.0. The MPE ratio of each antenna is determined at the minimum test separation distance required by the operating configurations and exposure conditions of the host device, according to the ratio of field strengths or power density to MPE limit, at the test frequency. Either the maximum peak or spatially averaged results from measurements or numerical simulations may be used to determine the MPE ratios. Spatial averaging does not apply when MPE is estimated using simple calculations based on far-field plane-wave equivalent conditions. The antenna installation and operating requirements for the host device must meet the minimum test separation distances required by all antennas, in both standalone and simultaneous transmission operations, to satisfy compliance. 1.3 Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Electric Field Magnetic Field Power Density Averaging Time Range(MHz) Strength(V/m) Strength(A/m) (mW/cm²) (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 614 1.63 (100) * 6

Page 2 of 4 3.0 – 30 1842/f 4.89/f (900/f2)* 6 30 – 300 61.4 0.163 1.0 6 300 – 1500 / / f/300 6 1500 – 100,000 / / 5 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Electric Field Magnetic Field Power Density Averaging Time Range(MHz) Strength(V/m) Strength(A/m) (mW/cm²) (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 614 1.63 (100) * 30 3.0 – 30 824/f 2.19/f (180/f )*2 30 30 – 300 27.5 0.073 0.2 30 300 – 1500 / / f/1500 30 1500 – 100,000 / / 1.0 30 F=frequency in MHz *=Plane-wave equivalent power density 1.4 Conducted Power Results Conducted Output Frequency Worst case Mode Channel Power (dBm) (MHz) Data rate PK Average 01 2412 1Mbps 22.03 19.12 802.11b 06 2437 1Mbps 22.15 19.25 11 2462 1Mbps 21.35 18.49 01 2412 6Mbps 21.09 17.12 802.11g 06 2437 6Mbps 22.69 18.76 11 2462 6Mbps 22.47 18.58 01 2412 6.5 Mbps 21.26 16.89 802.11n HT20 06 2437 6.5 Mbps 21.37 16.97 11 2462 6.5 Mbps 21.26 16.81

Page 3 of 4 Manufacturing tolerance IEEE 802.11b (Average) Frequency 2412 2437 2462 Target (dBm) 19 19 19 Tolerance ±(dB) 1.0 1.0 1.0 IEEE 802.11g (Average) Frequency 2412 2437 2462 Target (dBm) 18 18 18 Tolerance ±(dB) 1.0 1.0 1.0 IEEE 802.11n HT20 (Average) Frequency 16 16 16 Target (dBm) 1.0 1.0 1.0 1.5 MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna As declared by the Applicant, the EUT transmits with the maximum soure-baed Duty Cycle of 100%-see the User manual, and the EUT is a wireless device used in a mobile application, at least 20 cm from any body part of the user or nearby persons; from the maximum EUT RF output power, the minimum mobile separation distance, r =20cm, as well as the gain of the used antenna is 3.00 dBi for WLAN, and the power drift from Turn-up Procedure provide by manufacturer as following states, the RF power density can be obtained..

Page 4 of 4 1.6 Evaluation Result 1.6.1 Standalone MPE Minimum Output Power Power Power Antenna Separation (Turn-up Density Density Test Gain Distance Procedure) At 20 cm Limit Results (Numeric) (cm) dBm mW (mW/cm2) (mW/cm )2 WLAN 20.00 20 100 2.0 0.0398 1.0000 PASS 1.6.2 Simultaneous transmission MPE Considerations According to KDB447498 :For mobile exposure host platform to qualify for simultaneous transmission MPE test exclusion, all transmitters and antennas in the host must be either evaluated for MPE compliance, by measurement or computational modeling, or qualify for the standalone MPE test exclusion in section 7.1. Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modeled or measured field strengths or power density, is ≤ 1.0. This means that: ∑ of MPE ratios ≤ 1.0 The EUT is Not Applicable. 1.7Conclusion This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. .....................End of Report.........................


Document Created: 2018-06-29 03:13:13
Document Modified: 2018-06-29 03:13:13
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