What is the purpose of a tagger when detecting and measuring signal leakage?

The purpose of a tagger in the context of detecting and measuring signal leakage is to ensure that any leak measured originates from the cable system. This is crucial because it helps technicians identify whether the detected leakage is a result of an issue with the cable infrastructure rather than interference or other external sources. By verifying that the leak is indeed coming from the cable system, technicians can take the necessary troubleshooting steps to maintain the integrity of the network and address any potential issues that could affect service quality.

Other options touch on different aspects of the leak detection process but do not capture the specific function of a tagger accurately. Identifying the source of the signal or marking leak locations is part of the broader process of leak detection and troubleshooting, while boosting signal strength does not pertain to the role of a tagger. The main function is about confirming the integrity of the measurements related to the cable system itself.