What does insertion loss measure in a cable system?

Insertion loss refers specifically to the reduction in signal amplitude that occurs when a signal passes through a component, typically a length of cable or a connector. It is a crucial measurement in cable systems because it indicates how much of the original signal is lost during transmission, which can affect overall system performance.

When a signal travels through a cable, various factors such as resistance, attenuation, and reflections can contribute to the loss of signal power; this is what insertion loss quantifies. A lower insertion loss value generally indicates better performance, as it signifies that more of the incoming signal amplitude is maintained through the system.

Other options, while related to signal transmission, do not directly define what insertion loss measures. Signal clarity pertains more to the quality of the signal rather than the amount of loss. Signal frequency relates to the rate of oscillation of the transmitted signal but does not address the loss aspect. Signal power continuity might imply consistency in power delivery, but it does not accurately capture the concept of loss related to insertion.