RF Exposure info

FCC ID: 2APTAFA-DC900-TXBP

RF Exposure Info

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FCCID_4445477

RF Exposure evaluation According to 447498 D01 General RF Exposure Guidance v06: The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where f(GHz) is the RF channel transmit frequency in GHz. Power and distance are rounded to the nearest mW and mm before calculation. The result is rounded to one decimal place for comparison. eirp = pt x gt = (E x d)2/30 where: pt = transmitter output power in watts, gt = numeric gain of the transmitting antenna (unitless), E = electric field strength in V/m, --- 10((dBuV/m)/20)/106, d = measurement distance in meters (m)--- 3m. So pt = (E x d)2/(30 x gt) Worse case is as below: Field strength = 91.28 dBuV/m @3m Ant gain 0 dBi; so Ant numeric gain=1 So pt={[10(91.28/20)/106x3]2/(30x1)}x1000mW =0.4mW So (0.4mW/5mm)x √0.9276GHz = 0.08<3.0 for 1-g SAR Then SAR evaluation is not required.


Document Created: 2019-09-16 15:21:45
Document Modified: 2019-09-16 15:21:45
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