The ESA-L Basic Analyzers E4403B provide basic general-purpose spectrum analysis for bench-top,manufacturing or service environments with the speed and accuracy you need. Selecting the Basic Analyzers results in the best value, fastest delivery, and most favorable price. Features 1.1 dB overall amplitude accuracy 100 Hz to 5 MHz RBW, 100 Hz to 300 Hz optional +7.5 dBm TOI 5 minute warm-up to guaranteed measurement accuracy Rugged design, weather resistant, snap on battery pack Fastest sweep time for its class (4 ms minimum) Multiformat RF power measurement suite Large, high-resolution, color display Programming code compatibility to 8590 series spectrum analyzers Free IntuiLink PC software for screen and data transfer to Microsoft® Office BenchLink spectrum analyzer PC connectivity software Remotely view and control ESA over the Internet SCPI programming and IVI COM driver support Option A4H GPIB interface A4J IF and sweep ports B72 Increase Memory to 10 Meg