MPE

FCC ID: C3K1409

RF Exposure Info

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FCCID_1261982

REPORT NO: 09U12932-8A DATE: FEBRUARY 17, 2010 FCC ID: C3K1409 IC: 3048A-1409 10. MAXIMUM PERMISSIBLE EXPOSURE FCC RULES §1.1310 The criteria listed in Table 1 shall be used to evaluate the environmental impact of human exposure to radio-frequency (RF) radiation as specified in §1.1307(b), except in the case of portable devices which shall be evaluated according to the provisions of §2.1093 of this chapter. Page 55 of 58 COMPLIANCE CERTIFICATION SERVICES FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of CCS.

REPORT NO: 09U12932-8A DATE: FEBRUARY 17, 2010 FCC ID: C3K1409 IC: 3048A-1409 IC RULES IC Safety Code 6, Section 2.2.1 (a) A person other than an RF and microwave exposed worker shall not be exposed to electromagnetic radiation in a frequency band listed in Column 1 of Table 5, if the field strength exceeds the value given in Column 2 or 3 of Table 5, when averaged spatially and over time, or if the power density exceeds the value given in Column 4 of Table 5, when averaged spatially and over time. Page 56 of 58 COMPLIANCE CERTIFICATION SERVICES FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of CCS.

REPORT NO: 09U12932-8A DATE: FEBRUARY 17, 2010 FCC ID: C3K1409 IC: 3048A-1409 CALCULATIONS Given E = √ (30 * P * G) / d and S = E ^ 2 / 3770 where E = Field Strength in Volts/meter P = Power in Watts G = Numeric antenna gain d = Distance in meters S = Power Density in milliwatts/square centimeter Combining equations, rearranging the terms to express the distance as a function of the remaining variables, changing to units of Power to mW and Distance to cm, and substituting the logarithmic form of power and gain yields: d = 0.282 * 10 ^ ((P + G) / 20) / √ S where d = MPE distance in cm P = Power in dBm G = Antenna Gain in dBi S = Power Density Limit in mW/cm^2 Rearranging terms to calculate the power density at a specific distance yields S = 0.0795 * 10 ^ ((P + G) / 10) / (d^2) The power density in units of mW/cm^2 is converted to units of W/m^2 by multiplying by a factor of 10. Page 57 of 58 COMPLIANCE CERTIFICATION SERVICES FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of CCS.

REPORT NO: 09U12932-8A DATE: FEBRUARY 17, 2010 FCC ID: C3K1409 IC: 3048A-1409 LIMITS From FCC §1.1310 Table 1 (B), the maximum value of S = 1.0 mW/cm^2 From IC Safety Code 6, Section 2.2 Table 5 Column 4, S = 10 W/m^2 RESULTS Mode Band MPE Output Antenna FCC Power IC Power Distance Power Gain Density Density (cm) (dBm) (dBi) (mW/cm^2) (W/m^2) FHSS 2.4 GHz 20.0 4.72 5.00 0.0019 0.0186 END OF REPORT Page 58 of 58 COMPLIANCE CERTIFICATION SERVICES FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of CCS.


Document Created: 2010-03-29 16:00:38
Document Modified: 2010-03-29 16:00:38
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