The M937xA Series from Keysight Technologies is a PXI Vector Network Analyzer that is available in options from 4 GHz to 26.5 GHz. The analyzers offer high performance on key specifications such as speed, trace noise, stability and dynamic range which enable it to perform fast, accurate measurements and reduce the cost-of-test by enabling simultaneous characterization of many devices - two-port or multi-port - using a single PXI chassis. When space is at a premium, full two-port VNA capability with S-parameters can be added to an existing system that has just one open slot. To address applications such as high-volume device testing and highly complex on-wafer testing, a single chassis can be loaded with up to sixteen PXI VNA modules for use as either multiple two-port VNAs, a single 32-port VNA, or any combination in between.