EMC Question of the Week: September 9, 2024

Automotive EMC test in a semi-anechoic chamber

During an immunity test, the field strength measured inside a test chamber is 160 dB(μV/m). After the test equipment is powered down, the measured field strength due to the EUT is 40 dB(μV/m). So, powering down the test equipment reduced the measured field strength by,   

  1. 160 dB(μV/m)
  2. 120 dB(μV/m)
  3. -120 dB(μV/m)
  4. 40 dB(μV/m)

Reveal Question of the Week - Answer 240909