What is the primary function of a multimeter in the field?

The primary function of a multimeter in the field is to measure electrical properties. Multimeters are versatile tools that can assess various electrical parameters, including voltage, current, and resistance, which are critical in diagnosing and troubleshooting electrical systems. By providing accurate measurements, a multimeter allows professionals to ensure that circuits are functioning correctly, verify power supply levels, and confirm the integrity of wiring—essential activities in the field of telecommunications and electrical installations.

While other functions like testing fiber optic connections, locating faults, or amplifying signals are important in specific contexts, they do not represent the core utility of a multimeter. A multimeter is not equipped to test fiber optics directly, nor can it amplify signals; it is primarily focused on the electrical measurements needed to maintain and troubleshoot systems effectively. Fault locating may be done with specialized equipment, but a multimeter's role is distinctly in measurement.