Construction Coordinator Practice Exam

Why should downstream input signal measurements be compared to network maps before setting up a line extender?

1. To verify amplifier settings

2. To prevent overloading the system

3. Undocumented changes could affect input levels

4. To ensure compliance with regulations

The correct answer is: Undocumented changes could affect input levels

Comparing downstream input signal measurements to network maps before setting up a line extender is essential to ensure that undocumented changes in the system do not impact input levels. Network maps provide a visual representation of the intended signal flow and layout within the system, including specific values for signal strengths and expected performance at various points. When installers or technicians make modifications—whether through equipment upgrades, cable changes, or user-defined adjustments—without updating the network map, it can lead to discrepancies in expected input signals. These discrepancies could result in either too weak or too strong signals, which may degrade the quality of the network performance or even cause equipment failure. By comparing actual measurements to the established network maps, technicians can identify any such undocumented changes and address them proactively, ensuring optimal functioning of the line extender and the overall system. In contrast, other options, while they may relate to various aspects of system performance, do not directly address the critical need for alignment with the network maps to account for any undocumented alterations.