Application Note

Rapid Characterization of High Speed Digital Channels using a Multiport VNA

Vector Network Analyzers (VNAs) with 8 ports or more can provide significant decreases in test time by migrating from a 4-port measurement system. For tight tolerance DUTs that are barely within the test limit lines, small increases in accuracy can be realized by testing all of the test parameters at once, because the entire test setup is at the same temperature.

This application note discusses the thermal advantages of testing an 8-port DUT with the R&S ZNBT VNA to assess and debug two differential pairs in a 20-inch backplane.