What does a loop analyzer NOT measure?

A loop analyzer is a testing device specifically designed for analyzing traffic signal loops and measuring various parameters related to the loop's integrity and performance. Among the factors it typically measures are impedance, resistance, and frequency, which are crucial for determining the operational status and efficiency of the loop.

Impedance provides insight into the total opposition to alternating current flow within the loop, while resistance indicates how much a material opposes the flow of electric current. Frequency, in the context of traffic signal loops, is essential for understanding the signal's response characteristics and helps identify issues such as loop detuning or signal interference.

Power consumption, on the other hand, refers to the amount of electrical power being used by a device or system, which is not a direct aspect of what a loop analyzer measures. Loop analyzers focus primarily on the electrical characteristics of the loops themselves rather than the overall power usage of the equipment they are connected to. Thus, the correct answer is that a loop analyzer does not measure power consumption, as this parameter falls outside the scope of its intended functionality.