Which feature is associated with a signal level meter (SLM)?

A signal level meter (SLM) is a vital tool used in telecommunications and cable installation for assessing and analyzing signal quality. One of its key features is the ability to be operated in sweep mode, which allows the technician to scan a range of frequencies. This is particularly useful for identifying ingress, which refers to unwanted signals that enter a cable system from external sources. Ingress can lead to interference and degradation of service quality, making the sweep mode a critical function for troubleshooting issues in both residential and commercial installations.

The ability to sweep through a range of frequencies helps technicians not only detect ingress but also analyze the integrity of the signal throughout the entire frequency range used by the network. This capability is essential for maintaining optimal performance in signal transmission systems.

In contrast, while it's true that an SLM can measure various signal types and is not limited to just digital signals or indoor use, these features do not directly highlight the specific significant function related to identifying and diagnosing ingress issues. The emphasis on sweep mode and its role in ingress detection makes that particular feature stand out as the most relevant answer to the question.