The MS4640B Series from Anritsu is a 4-port vector network analyzer that operates from 70 KHz to 145 GHz (extendable to 1.1 THz). It offers a superior dynamic range of up to 142 dB, directivity of up to 50 dB and output power of up to 14 dBm. The IMDView software coupled with the internal combiner option offers the ability to switch from S parameters to IMD measurements in a single connection. The PulseView software, when combined with the innovative IF digitizing option, offers 2.5 ns pulse resolution with 100 dB dynamic range with no compromises or trade-offs due to varying duty cycles. DifferentialView, when combined with the dual internal source option, offers real-time display analysis of differential devices, drivers, and components while actively modifying phase and magnitude relationships of the internal dual sources. Internal trace-based eye diagram option provides the ability to display Time Domain, S-Parameters, and Eye Diagram analysis with active sweep updates. This analyzer comes with a 3-year warranty.