Agilent 8591A - RF Spectrum Analyzer 9 kHz - 1.8 GHz

The Agilent HP 8591A used Spectrum Analyzer has over 100 functions and are controlled either from the front panel or over the optional HP-IB interface. Advanced marker functions measure: the 99% power bandwidth of a signal; the 3 dB points of a signal; frequency; amplitude; amplitude and frequency differences on a signal; and highest peaks on a signal. The Next Peak button moves the marker to the next highest signal, simplifying harmonic measurements. Other measurement functions on the 8591A include: percentage AM; signal-to-noise ratio; and the FFT. Store/recall up to nine complete front-panel states in battery-backed RAM.