The Keysight (formerly Agilent) 5350B provides fast and precise measurements from 10 Hz to 20 GHz and features microwave components that are integrated on a single hybrid Gallium Arsenide (GaAs) circuit for added speed and reliability. The 5350B distinguished by wide frequency coverage, exceptional sensitivity, fast tracking, high measurement throughput, and wide FM tolerance. Built-in microprocessors provide math functions, including measurement scaling and offset. Automatic amplitude discrimination measures the frequency of the highest-amplitude signal in a multi-signal environment. A full set of diagnostic routines provides general information and troubleshooting.