MpeReport_FCC

FCC ID: VW7SR506N

Test Report

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FCCID_3260891

Compliance Certification Services (Shenzhen) Inc. Report No: C160913Z04-RP1_MPE FCC ID: VW7SR506N Date of Issue: October 31, 2016 MPE Report Exposure category: General population/uncontrolled environment EUT Type: Production Unit Device Type: Mobile Device Refer Standard: KDB 447498 D01 General RF Exposure Guidance v06 FCC Part 2 §2.1091 1. Evaluation method 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. 2. Limits for General Population/Uncontrolled Exposure 3. 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

Compliance Certification Services (Shenzhen) Inc. Report No: C160913Z04-RP1_MPE FCC ID: VW7SR506N Date of Issue: October 31, 2016 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 From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the maximum gain of the used antenna is 5dBi for 2.4GWLAN, the RF power density can be obtained. Frequency Antenna type and antenna Internal Maximum antenna Band number Identification gain Antenna 0, WLAN Antenna Antenna 0 5.0dBi 2.4GHz Antenna 1, WLAN Antenna Antenna 1 5.0dBi 4. Estimation Result 4.1 Conducted Power Results 2.4GHz WIFI Average Conducted Output Antenna Mode Frequency(MHz) Power (dBm) 2412 17.35 Antenna 0 IEEE 802.11b 2437 16.95 2462 16.82 2412 13.38 Antenna 0 2437 16.88 2462 13.54 IEEE 802.11g 2412 12.80 Antenna 1 2437 17.89 2462 13.38 2412 11.09 Antenna 0 2437 14.83 2462 11.27 IEEE 802.11n HT20 2412 11.40 Antenna 1 2437 15.23 2462 12.01 2422 7.37 Antenna 0 2437 15.02 2452 8.55 IEEE 802.11n HT40 2422 6.89 Antenna 1 2437 15.03 2452 8.27

Compliance Certification Services (Shenzhen) Inc. Report No: C160913Z04-RP1_MPE FCC ID: VW7SR506N Date of Issue: October 31, 2016 4.2 Manufacturing tolerance 2.4GHz WIFI IEEE 802.11 b (AVG) Frequency (MHz) 2412 2437 2462 Target (dBm) 17.0 16.0 16.0 Tolerance ±(dB) 1.0 1.0 1.0 IEEE 802.11 g (Average) Frequency Antenna 0 Antenna 1 (MHz) 2412 2437 2462 2412 2437 2462 Target (dBm) 13.00 16.00 13.00 12.00 17.00 13.00 Tolerance ±(dB) 1.0 1.0 1.0 1.0 1.0 1.0 IEEE 802.11 n HT20 (Average) Frequency Antenna 0 Antenna 1 (MHz) 2412 2437 2462 2412 2437 2462 Target (dBm) 11.00 14.00 11.00 11.00 15.00 12.00 Tolerance ±(dB) 1.0 1.0 1.0 1.0 1.0 1.0 IEEE 802.11 n HT40 (Average) Frequency Antenna 0 Antenna 1 (MHz) 2412 2437 2462 2412 2437 2462 Target (dBm) 7.00 15.00 8.00 6.00 15.00 8.00 Tolerance ±(dB) 1.0 1.0 1.0 1.0 1.0 1.0 4.3 Measurement Results 4.3.1 Standalone MPE 2.4GWLAN Antenna 0 Output power Antenna Antenna (Including tune-up Duty MPE MPE Limits Mode Gain Gain tolerance) Cycle (mW/cm2) (mW/cm2) (dBi) (linear) (dBm) (mW) IEEE 802.11 b 18.00 63.0957 5.0 3.1623 100% 0.0397 1.0000 IEEE 802.11 g 17.00 50.1187 5.0 3.1623 100% 0.0315 1.0000 IEEE 802.11 n HT20 15.00 31.6228 5.0 3.1623 100% 0.0199 1.0000 IEEE 802.11 n HT40 16.00 39.8107 5.0 3.1623 100% 0.0251 1.0000 Antenna 1 Mode Output power Antenna Antenna Duty MPE MPE Limits

Compliance Certification Services (Shenzhen) Inc. Report No: C160913Z04-RP1_MPE FCC ID: VW7SR506N Date of Issue: October 31, 2016 Gain Gain Cycle (mW/cm2) (mW/cm2) (dBm) (mW) (dBi) (linear) IEEE 802.11 b --- --- --- --- --- --- --- IEEE 802.11 g 18.00 63.0957 5.0 3.1623 100% 0.0397 1.0000 IEEE 802.11 n HT20 16.00 39.8107 5.0 3.1623 100% 0.0251 1.0000 IEEE 802.11 n HT40 16.00 39.8107 5.0 3.1623 100% 0.0251 1.0000 Remark: 1. Maximum average power including tune-up tolerance; 2. MPE use distance is 20cm from manufacturer declaration of user manual. 3. We choose 2412MHz (lowest frequency operate at 2.4GHz) to calculate MPE limit as higher frequency will have higher MPE limits. According to KDB447498 for Transmitters used in mobile exposure conditions for simultaneous transmission operations; ∑ of MPE ratios ≤ 1.0 Antenna 0 and Antenna 1 for 2.4GWLAN MPE Antenna 0 MPE Antenna 1 Mode ∑ MPE ratios Limit Results (mW/cm2) (mW/cm2) IEEE 802.11b 0.0397 N/A N/A 1.000 Pass IEEE 802.11g 0.0315 0.0397 N/A 1.000 Pass IEEE 802.11n HT20 0.0199 0.0251 0.0450 1.000 Pass IEEE 802.11n HT40 0.0251 0.0251 0.0502 1.000 Pass Note: The estimation distance is 20cm Conclusion The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile device. ---------------- END OF REPORT---------------


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Document Modified: 2017-12-20 22:28:46
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