RF Exposure

FCC ID: A4RGFHD254

RF Exposure Info

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FCCID_3282062

EMC Test Data Client: Google, Inc. Job Number: JD101521 and T-Log Number: T101543 Model: GFHD254 Project Manager: Deepa Shetty Contact: Weifeng Pan Project Coordinator: - Standard: FCC 15.247 and 15.407 Class: N/A Maximum Permissible Exposure / SAR Exclusion Test Specific Details The objective of this test session is to perform final qualification testing of the EUT with respect to the Objective: specification listed above. Date of Test: 12/19/2016 Test Engineer: Mark Hill General Test Configuration Calculation uses the free space transmission formula: S = (PG)/(4 πd2) Where: S is power density (W/m2), P is output power (W), G is antenna gain relative to isotropic, d is separation distance from the transmitting antenna (m). Summary of Results Device complies with Power Density requirements at 20cm Yes ti separation: Modifications Made During Testing No modifications were made to the EUT during testing Deviations From The Standard No deviations were made from the requirements of the standard. T101543 (Lockdown) MPE Page 1 of 2

EMC Test Data Client: Google, Inc. Job Number: JD101521 and T-Log Number: T101543 Model: GFHD254 Project Manager: Deepa Shetty Contact: Weifeng Pan Project Coordinator: - Standard: FCC 15.247 and 15.407 Class: N/A FCC MPE Calculation Use: General Antenna: -4.0dBi for Bluetooth 9.48dBi for UNII1 (Directional TxBF gain) 10.6dBi for UNII3 (Directional TxBF gain) Worse case mode: BLE for 2.4GHz Bluetooth Operation n40, TxBF for UNII1 n40, TxBF for UNII3 Assessment of individual radio operation EUT Cable Loss Ant Power Power Density (S) MPE Limit Freq. Power Loss Gain at Ant EIRP at 20 cm at 20 cm MHz dBm mW* dB dBi dBm mW mW/cm^2 mW/cm^2 BT Radio Operation (worse case - BLE) 2440 6.0 4.0 0 -4 6.0 1.58 0.0003 1.000 5GHz radio operation 5200 20.3 107.2 0 9.48 20.3 950.60 0.189 1.000 5795 24.5 281.8 0 10.6 24.5 3235.94 0.644 1.000 Simultaneous transmission calculation usingg worse case ((as a % of MPE limit @ 20cm)) of 2.4GHz and 5GHz operation p Freq. MHz % of limit 2440 0.00 5200 64.4 Total: 64.4 T101543 (Lockdown) MPE Page 2 of 2


Document Created: 2016-12-19 10:29:20
Document Modified: 2016-12-19 10:29:20
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