NCTI Service Technician Practice Exam

The primary purpose of a combination SLM (Signal Level Meter) and leakage detector is to measure both signal levels and leakage. This device integrates two critical functions essential for maintaining the performance of cable systems.

Signal level measurement is vital for ensuring that the strength of the signal being transmitted through coaxial cables meets the required specifications for optimal performance. Weak signals can lead to poor picture quality and disrupted service.

Leakage detection is equally important, as it identifies any unwanted signals that are escaping from the coaxial cable. This leakage can lead to interference with other electronic systems and can be subject to regulatory compliance issues. Detecting leakage ensures the integrity of the cable installation and assists in troubleshooting potential problems in the network.

Thus, the combination of these two capabilities into one instrument allows technicians to efficiently assess the condition of the cable system, ensuring both signal quality and compliance with operational standards.