RF Exposure

FCC ID: 2AA94-CX20X

RF Exposure Info

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FCCID_4392746

RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) FCC ID: 2AA94-CX20X EUT Specification EUT Wireless IP Camera Frequency band WLAN: 2.412GHz ~ 2.462GHz (Operating) WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz WLAN: 5.745GHz ~ 5825GHz Others Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Exposure classification Occupational/Controlled exposure (S = 5mW/cm2) General Population/Uncontrolled exposure (S=1mW/cm2) Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Antenna gain (Max) 0 dBi Evaluation applied MPE Evaluation SAR Evaluation Limits for Maximum Permissible Exposure(MPE) Frequency Electric Field Magnetic Field Power Average Range(MHz) Strength(V/m) Strength(A/m) Density(mW/cm2) Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500-100000 -- -- 1 30

Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where Pd= Power density in mW/om* Pout=output power to antenna in mW G= gain of antenna in linear scale Pi=3.1416 R= distance between observation point and center of the radiator in om Pd the limit of MPE, 1mW/cem2. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Measurement Result Maximum Peak Output Power (dBm} Modulation Low Channel Middle Channel High Channel 802.11b 1286 1275 1263 802.11g 1212 12.03 1210 802.11n—HT20 10.58 10.36 10.22 802.11n—HT40 9.62 9.56 0.4 Operating Test Tune up Output Ant. Power Power Mode Channel tolerance Max tune up Peak An.t. Gain density at density conducted Gain m (dBm) ower(dBm} power (dBi) {nume 20cm Limits P (mW) ric) (mW/om*) (mW/om"} 802.11b 1 12.86+1 13.86 24.92 0 1.00 0.00484 1 6 12.75+1 13.75 23.71 0 1.00 0.00472 1 11 12.63+1 13.63 23.07 0 1.00 0.00459 1 802.11g 1 12.12+1 13.12 20.51 0 1.00 0.00408 1 6 12.03+1 13.03 20.09 0 1.00 0.00400 1 11 121041 13.10 20.42 0 1.00 0.00406 1 802.11n—H 1 10.58+1 11.58 14.39 0 1.00 0.00286 1 T20 6 10.36+1 11.36 13.68 0 1.00 0.00272 1 11 10.22+1 11.22 18.24 0 1.00 0.00263 1 802.11n—H 3 9.62+1 10.62 11.53 0 1.00 0.00229 1 T4G 6 9.56+1 10.56 11.38 0 1.00 0.00226 1 9 9.34+1 10.34 10.81 0 1.00 0.00215 1 Signature &4 n Date: 2019—07—20


Document Created: 2019-07-29 01:08:28
Document Modified: 2019-07-29 01:08:28
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