The HP 3589A Spectrum / Network Analyzer is a high performance, 10 Hz to 150 MHz, synthesized network / spectrum analyzer offering swept spectrum, narrow band zoom, and vector network measurements. Swept spectrum mode uses digital IF filters that allow increased measurement speed (up to four times faster than conventional swept-tuned analyzers for comparable measurements) with no additional amplitude error or resolution loss. Narrow band zoom mode uses an implementation of the Fast Fourier Transform to provide even faster measurements (up to 350 times faster than conventional swept-tuned analyzers for comparable measurements) with even greater resolving power. Narrow band zoom mode can be used for spans of 40 kHz and less. Vector network mode provides complete frequency-domain characterization. With the addition of the HP 35689A / B S-Parameter Test Set, the HP 3589A can do complete one-port or two-port vector network analysis.