6 GHz, 80 MHz Bandwidth, RF and Baseband PXI Vector Signal Transceiver—The PXIe‑5645 combines a vector signal generator and vector signal analyzer with FPGA-based real-time signal processing and control into a single device, also known as a VST. Because of this software-designed approach, the PXIe‑5645 offers the flexibility of a software defined radio architecture with RF instrument class performance. The PXIe‑5645 features a high-performance, differential or single-ended baseband I/Q interface. This interface allows the PXIe‑5645 to address many additional applications, such as testing both the upconverted RF and downconverted baseband signals of a device with a single instrument.