A cable tester is a device used to verify the electrical connections in a cable or to diagnose issues with a cable's wiring.
It typically consists of two main components: a main unit and remote unit. The main unit is connected to one end of the cable, while the remote unit is connected to the other end. The cable tester then sends signals through the cable and analyzes the responses to determine if there are any faults such as breaks, shorts, or miswirings.
Cable testers are commonly used in networking, telecommunications, and audio/video installations to ensure that cables are properly installed and functioning correctly.
They come in various forms and complexity levels, from simple continuity testers to more advanced models capable of testing multiple types of cables and identifying specific faults.