Logic probes are inexpensive handheld probes that are used to analyze the logic states (high/true: logic 1 or low/false: logic 0) of digital signals. They are used by electrical and electronics engineers to verify or debug their hardware circuit designs.

Logic probes can be used in a variety of applications. Logic probes are most often used to measure the logic states (high/true: logic 1 or low/false: logic 0) of transistor-transistor logic (TTL) or complementary metal-oxide semiconductor (CMOS) digital circuits.

Logic probes are connected to a circuit under test and logic analyzer to take sophisticated logic measurements. Once connected to the line, the logic analyzer can tell you the logic state of digital signals. Tektronix probes offer the industry's lowest probe loading, which protects the integrity of your signal and minimizes the impact on your design.