Which tool is primarily used by technicians for measuring signal leakage?

The tool that is primarily used by technicians for measuring signal leakage is the leakage detector. Leakage detectors are specifically designed to identify and measure radio frequency (RF) energy that escapes from coaxial cables, connectors, and other components in a communications system. This is critical for maintaining the integrity of the signal and ensuring compliance with regulations regarding signal emissions.

Leakage detection is essential in environments where signal leakage may interfere with other communications or broadcasting services. By using a leakage detector, technicians can pinpoint the locations of leaks and address them promptly to minimize signal loss and improve overall system performance.

The other tools mentioned, such as the frequency analyzer, signal strength meter, and time-domain reflectometer, serve different purposes in the realm of signal measurement and troubleshooting. While they are important in their own right for different tasks—like analyzing signal frequencies, measuring signal strength, and identifying faults in cables—they do not specifically focus on the measurement of signal leakage.