Question
What type of instrument can be used to accurately measure an RF field strength?
Answer Options
- A) A receiver with digital signal processing (DSP) noise reduction
- B) A calibrated field strength meter with a calibrated antenna
- C) An SWR meter with a peak-reading function
- D) An oscilloscope with a high-stability crystal marker generator
Correct Answer: B
Explanation
Measuring the actual Radio Frequency (RF) field strength in an operating environment is often the most accurate way to determine compliance with MPE limits, especially for complex or uncertain antenna installations. However, this requires specialized equipment.
The most accurate instrument to measure RF field strength is a calibrated field strength meter with a calibrated antenna. This combination allows the operator to measure the electric or magnetic field strength at a specific distance from the antenna and then convert that measurement into power density, which is directly compared against the MPE limits.
This topic was automatically created to facilitate community discussion about this exam question. Feel free to share study tips, memory tricks, or additional explanations!