RF Exposure info

FCC ID: ZAT2500EM

RF Exposure Info

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FCCID_2176446

                                          SAR Exclusion Justification

Test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm

Guidance document reference: 447498 D01 General RF Exposure Guidance v05r01, page 11, paragraph
4.3.1(1).

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

      • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below

The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and
for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation
distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test
exclusion.


SAR test exclusion analysis:

Assumptions: Since the exact separation distance may vary from sensor to sensor, the minimum
separation distance of 5 mm is assumed per the guidance document.

Max. power of channel:              1.9 mW
Min. separation distance:             5 mm
Max. frequency:                    2.48 GHz

[(Pwr/Dist)*√Freq.] =               0.6

The result of the above SAR threshold calculation demonstrates that the result is less than the 1-g
numeric threshold of 3 and the 10-g numeric threshold of 7.5.

Conclusion: The above analysis shows that the evaluated device qualifies for exemption from SAR
testing.

Signed:   , Chief Engineer   1/17/2013



Document Created: 2014-01-17 16:20:36
Document Modified: 2014-01-17 16:20:36

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