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SAR Testing & Radio Frequency Exposure Flashcards

7 cards from real FCC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 SAR Testing & Radio Frequency Exposure flashcards as text

  1. What is the time-averaging period used for MPE calculations in uncontrolled (general population) environments per FCC rules?

    Answer: 30 minutes

    The FCC specifies a 30-minute time-averaging period for MPE calculations in uncontrolled/general population environments, compared to 6 minutes for controlled/occupational environments.

  2. What instrument is used to measure the electric field distribution within a SAR phantom during testing?

    Answer: Isotropic electric field (E-field) probe

    An isotropic E-field probe is inserted into the phantom and scanned robotically to map the three-dimensional electric field distribution from which the peak SAR is calculated.

  3. At what power level must a device under test be operated during FCC SAR compliance testing?

    Answer: Maximum certified transmission power

    SAR testing must be conducted at the maximum certified transmission power level to ensure the worst-case RF exposure is evaluated for compliance.

  4. Which international standard, published by the IEC, is frequently harmonized with FCC SAR test requirements for portable wireless devices?

    Answer: IEC 62209

    IEC 62209 (Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices) is harmonized with FCC SAR requirements and recognized by accreditation bodies worldwide.

  5. Which FCC rule section governs SAR evaluation requirements for portable transmitting devices?

    Answer: 47 CFR Part 2.1093

    47 CFR Part 2.1093 establishes RF radiation exposure evaluation requirements specifically for portable devices, including the 1.6 W/kg SAR limit averaged over 1 gram.

  6. What scanning grid spacing is typically used during the coarse scan phase of SAR measurement per IEEE 1528?

    Answer: 10–15 mm

    IEEE 1528 specifies a coarse scan grid spacing of approximately 10–15 mm to quickly map the overall SAR distribution, followed by a fine scan at approximately 5 mm spacing around the peak region.

  7. What is the time-averaging period for MPE calculations in occupational/controlled environments per FCC rules?

    Answer: 6 minutes

    The FCC specifies a 6-minute time-averaging period for occupational/controlled environments, reflecting the assumption that trained workers can monitor and manage their RF exposure.