RF Exposure Info

FCC ID: PY3WG602

RF Exposure Info

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FCCID_305037

Industrial Technology Research Institute FCC ID ：PY3WG602
Electronics Research & Service Organization Report No.：510-9201-032F
Bldg. 17, 195-4 Sec. 4, Chung Hsing Rd., Chutung,Hsinchu, 310
Taiwan,Republic Of China Page 1 of 2
TEL : 886-3-5917069 FAX : 886-3-5825720

9. 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)
LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE)

Frequency Range Electric Field Magnetic Field Power Density
Average Time
(MHz) Strength (V/m) Strength (A/m) (mW/cm2)
(A) Limits for Occupational / Control Exposures
300-1,500 -- -- F/300 6
1,500-100,000 -- -- 5 6
(B) Limits for General Population / Uncontrol Exposures
300-1,500 -- -- F/1500 6
1,500-100,000 -- -- 1 30

9.1 FRIIS FORMULA
Friis transmission formula : Pd = (Pout*G)/(4*pi*r2)
Where
Pd = power density in mW/cm2
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 cm
Pd id the limit of MPE, 1 mW/cm2. If we know the maximum gain of the antenna and the
total power input to the antenna, through the calculation, we will know the distance r
where the MPE limit is reached.

9.2 EUT OPERATING CONDITION
A software provided by client enabled the EUT to transmit and receive data at lowest,
middle and highest channel individually.

Industrial Technology Research Institute FCC ID ：PY3WG602
Electronics Research & Service Organization Report No.：510-9201-032F
Bldg. 17, 195-4 Sec. 4, Chung Hsing Rd., Chutung,Hsinchu, 310
Taiwan,Republic Of China Page 2 of 2
TEL : 886-3-5917069 FAX : 886-3-5825720

9.3 TEST RESULT OF RF EXPOSURE EVALUATION

Test Item ： RF Exposure Evaluation Data
Test Mode ： Normal Operation

9.3.1 ANTENNA GAIN

Antenna Gain：The maximum Gain measured in fully anechoic chamber is 2dBi
linear scale.

9.3.2 OUTPUT POWER INTO ANTENNA & RF EXPOSURE
EVALUATION DISTANCE

Output Power to Antenna Minimum Allowable
Channel Channel Frequency (MHz)
(dBm) Distance  From Skin(cm)
CH1 2412.00 17.46 2.650911
CH6 2437.00 17.38 2.626607
CH11 2462.00 17.35 2.617550

Document Created: 2003-01-23 15:42:10
Document Modified: 2003-01-23 15:42:10

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