RF Exposure

FCC ID: RRJ-Q10

RF Exposure Info

Download: PDF
FCCID_1908658

RF EXPOSURE TEST Applied procedures / limit These devices are not exempted from compliance does not exceed the Commission’s RF exposure guidelines.Unless a device operates at substantially low power levels,with a low gain antenna(s),supporting information is generally needed to establish the various potential operating configurations and exposure conditions of a transmitter and its antenna(s) in order to determine compliance with the RF exposure guidelines. In order to demonstrate compliance with MPE requirement(see Section 2.1091),the following information is typically needed: Calculation that estimates the minimum separation distance(20 cm or more)between an antenna and persons required to satisfy power density limits defined for free space. Antenna installation and device operating instructions for installers(professional/unskilled users),and the parties responsible for ensuring compliance with the RF exposure requirement Any caution statements and/or warming labels that are necessary in order to comply with the exposure limits Any other RF exposure related issues that may affect MPE compliance. FCC 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). (A) Limits for Occupational / Controlled Exposure Electric Field Magnetic Field Averaging Time Frequency Power Density (S) Strength (E) Strength (H) |E|2,|H|2or S Range (MHz) (mW/ cm2) (V/m) (A/m) (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 Electric Field Magnetic Field Averaging Time Frequency Power Density (S) Strength (E) Strength (H) |E|2,|H|2 or S Range (MHz) (mW/ cm2) (V/m) (A/m) (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

MPE CALCULATION METHOD Calculation Method of RF Safety Distance: 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 FCC radio frequency exposure limits may be exceeded at distances closer than r cm from the antenna of this device EIRP=10(Antenna Gain+Peak Output Power/10) Note: 1. s=1.0 mW /cm2 for limits for General Population/Uncontrolled Exposures. 2. The time averaged power over 30 minutes will be equaled Output Power. 3. The Power Density at a distance of 20cm calculated from the formula is far below the limit of 1MW/ cm2

TEST RESULTS EUT： SMART TV BOX Model Name ： Q10 Relative Temperature： 25 ℃ 60% Humidity： DC 12V from adapter AC Pressure： 1012 hPa Test Voltage ： 120V/60Hz Test Mode ： TX Mode Max.Averag Output Limit of Antenna Power e output power Power Gain Density (S) Density (S) Result power to antenna (numeric) (mW/ cm2) (mW/ cm2) (dBm) (mW) 15.88 38.72 1.59(2.0dBi) 0.0122 1 Pass NOTE: (For mobile or fixed location transmitters, the maximum power density is 1.0mW/cm2 even if the calculation indicates that the power density would be larger)


Document Created: 2013-02-25 14:11:28
Document Modified: 2013-02-25 14:11:28
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC