The PXIe-5644R/5645R/5646R from National Instruments is a vector signal transceivers (VST) built on FPGA technology programmable with NI LabVIEW software. The VST includes a vector signal generator, vector signal analyzer, and digital I/O in a single PXI module and operates from 65 MHz to 6 GHz. It has an instantaneous bandwidth up to 200 MHz and has 24 channels of high-speed digital I/O up to 250 Mbit/s. The transceiver has a user programmable Xilinx FPGA for system configuration and expands to support multiple input, multiple output (MIMO) configurations or parallel testing in a single PXI chassis. It has an optional baseband I/Q interface with the NI PXIe-5645R.