The HP 41800A Active Probe is a high-performance measurement probe designed for accurate signal analysis across a wide frequency range from 5 Hz to 500 MHz. Featuring an active FET input, it offers very high input impedance and low capacitance, minimizing circuit loading and preserving signal integrity—especially important when probing sensitive or high-speed circuits. This makes it ideal for use with oscilloscopes and other test equipment in both low-frequency and RF applications. Built with Hewlett-Packard’s renowned quality, the 41800A provides stable, reliable performance and is well-suited for laboratory, troubleshooting, and precision measurement environments.

Used- in good condition.