Construction Coordinator Practice Exam

Which of the following best describes a power inserter?

1. It blocks all low-frequency signals

2. It passes RF signals and blocks AC voltage

3. It combines multiple signals into one output

4. It replaces traditional power supplies

The correct answer is: It passes RF signals and blocks AC voltage

A power inserter is a device used in telecommunications and networking systems, particularly in the context of distribution amplifiers and RF (Radio Frequency) systems. The primary function of a power inserter is to allow RF signals to pass through while providing power to active components, such as amplifiers, through the same coaxial cable. The correct choice highlights that a power inserter passes RF signals, which is essential for maintaining the integrity of the data and communication being transmitted. Simultaneously, it blocks AC voltage from interfering with the RF signals being transmitted downstream. This ability to handle RF signals while managing the power is crucial in installations where maintaining signal clarity and strength is necessary. Overall, the power inserter effectively ensures that the RF signals needed for communication can flow freely, while also supplying necessary power without the risk of AC voltage disrupting the signal.