Test Report_20170706_v1 - 3_11602267 v1_425948_SAR Exemption_Technical Brief - n

FCC ID: A94425948

RF Exposure Info

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FCCID_3453545

425948 RF Exposure Technical Brief FCC 47 CFR 2.1093 SAR Exclusion Calculation As per FCC KDB 447498 D01 General RF Exposure Guidance DR03-41372 FCC 47 CFR 2.1093 SAR Exclusion Calculation as per KDB 447498 D01 General RF Exposure Guidance DR03-41372 Maximum Avg Output Power Antenna Tx Frequency (MHz) dBm mW Test Separation Distance (mm) d Threshold Value Result Pass by Exclusion; d Threshold Value is Main BT 2480 12.3 16.8 40.0 0.7 less than 3.0 RSS-102 SAR exemption calculation Summary: Minimum typical separation distance between the antenna and the user = 40mm Exemption limit from RSS-102 for routine evaluation based on frequency and separation distance for 2450 MHz @ 40mm = 173mW (see Appendix A: Table 1) EUT’s EIRP = 16.8 mW (see EIRP calculation below) 16.8 mW < 173 mW, therefore the EUT is exempt from routine SAR evaluation. EIRP calculation: 9.05 dBm peak conducted RF output power as measured using a method compliant with RSS-210 3.204 dBi peak antenna gain EIRP = peak conducted RF power + peak antenna gain = 9.05 dBm + 3.204 dBi = 12.254 dBm = 16.8 mW Conclusion: For our EUT transmitting at 2450 MHz, if evaluate the EUT against the exemption limits at a distance of 40mm (typical use case), the power at this distance must be below 173 mW. 173 mW – 23.88 mW = 156.2 mW of margin (pass).

Appendix A: From RSS-102:


Document Created: 2019-10-23 06:35:49
Document Modified: 2019-10-23 06:35:49
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