The Rohde & Schwarz RTB-K3 is an electronic part with a uniform expansion option for the RTB2000 series. It is a sophisticated modular system with up to four independent add-on cards, allowing users to independently expand the system, increasing its scope and range of functions. With its superior performance and versatility, the RTB-K3 is ideal for testing, development, research and educational laboratories.The RTB-K3 features up to four independent function modules for a wide variety of applications. The standard features include digital input/output and analog input/output, as well as a USB full speed host connector. With additional modules, the RTB-K3 can support CAN interfaces, CAN FD, LIN and FlexRay protocols, as well as digital I/O and 3-level logic. For precise measurements, the RTB-K3 is equipped with multichannel-sampling capabilities, precise timing units and programmable switching.The RTB-K3 comes with a powerful software suite, allowing users to develop their own experiments without the need for in-depth programming knowledge. The software includes an editor, analysis and visualization tools, as well as a library of functions. With its superior performance, flexibility and easy-to-use software suite, the RTB-K3 is the perfect companion for rapid prototyping and testing applications.