The Agilent/HP 8590A has the versatility to make most RF signal measurements. A digital display gives flicker-free and parallax-free graticule. Display menus simplify operation and reduce the number of front-panel controls. Use the three main control keys and the data entry knob or keypad to measure any signal. Operation is simple, center the signal with FREQUENCY; resolve the signal with SPAN; move the signal up and down with AMPLITUDE, that's all there is to it! The Agilent/HP 8590A used spectrum analyzer automatically adjusts internal parameters such as resolution bandwidth, sweep time, IF gain, and input attenuation.