MPE

FCC ID: PY311300175

RF Exposure Info

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FCCID_1596000

Report No.: FR1N1843 Appendix B. Maximum Permissible Exposure FCC ID: PY311300175 Page No. : B1 of B3

Report No.: FR1N1843 1. Maximum Permissible Exposure 1.1. Applicable Standard Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device whereby a distance of 0.2 m normally can be maintained between the user and the device. (A) Limits for Occupational / Controlled Exposure Averaging Time Frequency Range Electric Field Magnetic Field Power Density (S) |E|²,|H|² or S (MHz) Strength (E) (V/m) Strength (H) (A/m) (mW/ cm²) (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 (B) Limits for General Population / Uncontrolled Exposure Averaging Time Frequency Range Electric Field Magnetic Field Power Density (S) |E|²,|H|² or S (MHz) Strength (E) (V/m) Strength (H) (A/m) (mW/ cm²) (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz ; *Plane-wave equivalent power density 1.2. MPE Calculation Method E (V/m) ＝ 30  P  G Power Density: Pd (W/m²) ＝ E2 d 377 E ＝ Electric field (V/m) P ＝ Peak RF output power (W) G ＝ EUT Antenna numeric gain (numeric) d ＝ Separation distance between radiator and human body (m) The formula can be changed to Pd ＝ 30  P  G 377  d 2 From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. FCC ID: PY311300175 Page No. : B2 of B3

Report No.: FR1N1843 1.3. Calculated Result and Limit <For WLAN Function>: Antenna Type : Print Antenna Max Conducted Power for IEEE 802.11g Ant. 1 + Ant. 2: 29.32 dBm Peak Output Power Density Limit of Power Antenna Gain Antenna Gain Peak Output Power (S) Density (S) Test Result (dBi) (numeric) Power ( mW ) (dBm) (mW/cm²) (mW/cm²) 2.5 1.7783 29.3181 854.6884 0.302523 1 Complies <For GSM 850 Function>: 3G Module, FCC ID: N7NMC8705, IC: 2417C-MC8705 Antenna Type : Fixed Internal Antenna Power Density Limit of Power Frequency ERP EIRP(dBm) EIRP(mW) (S) Density (S) Test Result (MHz) power(dBm) (mW/cm²) (mW/cm²) 824.2 17.8300 19.9700 99.3116 0.019800 0.549 Complies 836.4 17.6400 19.7800 95.0605 0.018921 0.549 Complies 848.8 16.8000 18.9400 78.3430 0.015594 0.549 Complies CONCULSION: Both of the WLAN and GSM 850 can transmit simultaneously, the formula of calculatedthe MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density Therefore, the worst-case situation is 0.302523 / 1 + 0.019800 / 0.549 = 0.338589, which isless than “1”. This confirmed that the device comply with FCC 1.1310 MPE limit. FCC ID: PY311300175 Page No. : B3 of B3


Document Created: 2011-12-06 15:08:42
Document Modified: 2011-12-06 15:08:42
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