MPE

FCC ID: XEU2703240

RF Exposure Info

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FCCID_1227695

FCC PARTS 2 & 90, SUBPART I, NON-BROADCAST RADIO TRANSCEIVERS Page 8 VRS, Model 270-3240-020 FCC ID: XEU2703240 5.5. RF EXPOSURE REQUIREMENTS [§§ 1.1310 & 2.1091] 5.5.1. Limits § 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of human exposure to radio-frequency (RF) radiation as specified in 1.1307(b). LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Electric Field Magnetic Field Strength Power Density (mW/cm2) Average Time Range Strength (V/m) (A/m) (minutes) (MHz) (A) Limits for Occupational/Control Exposures 30-300 61.4 0.163 1.0 6 300-1500 -- -- f/300 6 (B) Limits for General Population/Uncontrolled Exposure 30-300 27.5 0.073 0.2 30 300-1500 -- -- f/1500 30 Note: f is frequency in MHz 5.5.2. Method of Measurements Calculation Method of RF Safety Distance: PG EIRP S= = 4π ⋅ r 2 4π ⋅ r 2 Where, P: power input to the antenna in mW EIRP: Equivalent (effective) isotropic radiated power. S: power density mW/cm2 G: numeric gain of antenna relative to isotropic radiator r: distance to centre of radiation in cm PG EIRP r= = 4π ⋅ S 4π ⋅ S FCC radio frequency exposure limits may be exceeded at distances closer than r cm from the antenna of this device. ULTRATECH GROUP OF LABS File #: ETST-005F90 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 January 4, 2010 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: vic@ultratech-labs.com, Website: http://www.ultratech-labs.com All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST)

FCC PARTS 2 & 90, SUBPART I, NON-BROADCAST RADIO TRANSCEIVERS Page 9 VRS, Model 270-3240-020 FCC ID: XEU2703240 5.5.3. Evaluation of RF Exposure Compliance Requirements Maximum RF Power conducted, Pconducted[dBm] = 33.19 at 769.5 MHz Maximum Antenna Gain, G[dBi] = 3 Maximum EIRP, PEIRP[dBm] = 36.19 MPE Limit for Occupational/Controlled Exposure, Scontrolled[mW/cm2] = 769.5/300 = 2.57 MPE Limit for General Population/Uncontrolled Exposure, Suncontrolled[mW/cm2] = 769.5/1500 = 0.51 Calculated RF Safety Distance for Occupational/Controlled Exposure, rsafety_controlled[cm] = 11.36 Calculated RF Safety Distance for General Population/Uncontrolled Exposure, rsafety_uncontrolled[cm] = 25.40 ULTRATECH GROUP OF LABS File #: ETST-005F90 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 January 4, 2010 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: vic@ultratech-labs.com, Website: http://www.ultratech-labs.com All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST)


Document Created: 2010-01-07 14:14:10
Document Modified: 2010-01-07 14:14:10
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