FCC RF Emissions & Electromagnetic Compatibility

Question 1

What does EMC stand for in the context of FCC certified laboratory testing?

Accepted Answer

Electromagnetic Compatibility

Answer

Electronic Measurement Calibration

Answer

Emission Measurement Control

Answer

Equipment Manufacturing Compliance

Question 2

Which FCC Part covers radiated and conducted emission limits for unintentional radiators?

Accepted Answer

Part 15

Answer

Part 22

Answer

Part 90

Answer

Part 97

Question 3

What is the primary purpose of a shielded anechoic chamber in EMC testing?

Accepted Answer

To eliminate external electromagnetic interference and absorb internal reflections

Answer

To amplify weak signals for measurement

Answer

To calibrate spectrum analyzers

Answer

To store reference antennas

Question 4

What is the standard test distance commonly used for FCC radiated emissions measurements on devices operating below 1 GHz?

Accepted Answer

3 meters

Answer

1 meter

Answer

10 meters

Answer

30 meters

Question 5

Which type of antenna is most commonly used for radiated emissions measurements in the 30 MHz to 1 GHz range?

Accepted Answer

Biconical and log-periodic (LPDA) antennas

Answer

Parabolic dish antenna

Answer

Yagi antenna

Answer

Loop antenna only

Question 6

What is the definition of a 'conducted emission' in FCC testing?

Accepted Answer

Unwanted RF energy transmitted back through the power line

Answer

RF energy radiated through the air from a device

Answer

Interference caused by mechanical vibration

Answer

Emissions from intentional transmitters only