Portable high-performance oscilloscopes for harsh environments. The compact ScopeMeter test devices Fluke 190 Series III are designed for use anywhere and can be utilized for almost any troubleshooting task. They combine robustness, portability, and safety according to CAT III 1000 V/CAT IV 600 V with the high performance of bench oscilloscopes, allowing you to effortlessly tackle the challenges of installation, commissioning, and maintenance of industrial machines, automation and process controls, as well as the electronics of power converters from DC to 500 MHz. Models with two and four channels and various bandwidths are available. Fast sampling rates of up to 5.0 GS/s, resolution up to 200 ps, and a large memory for 10,000 sampling points per channel enable high-accuracy signal capture and detailed display of waveforms, noise, and other interference signals. Perform time- or amplitude-related measurements on three-phase systems or three-axis controls, or simply compare multiple measurement points in a circuit under test. Features such as TrendPlot, paperless recorder, ScopeRecord mode, Connect-and-View triggering, and a unique replay function with 100 screen contents help you quickly diagnose problems to minimize repair costs and downtime. Thanks to these features, the oscilloscopes are easy and flexible to use, especially in diagnosing the most challenging issues, such as complex waveforms, induced noise, intermittent events, signal fluctuations, or drift.