When your budget is limited, your test equipment does not have to be. The Keysight (formerly Agilent) ESA-L series of general-purpose, portable spectrum analyzers provides basic spectrum analysis, with the speed and accuracy you need. Features: 8590-series programming code compatibility Multiformat RF power measurement suite Four-millisecond RF sweep time /- 1.1 dB overall amplitude accuracy Large, high-resolution, color VGA display Rugged, portable, weather-resistant package Five-minute warm up> Built-in help button