Introduction This guide characterizes the performance of the E4406A vector signal analyzer (VSA) and the 89601A vector signal analysis software combination. Together, these tools provide you both the flexible digital demodulation and analysis capabilitiesof the 89601A software and the standards-based one-button test capabilities of the E4406A. This teaming provides fast accurate testing for compliance to wireless specifications and tools to analyze the design if it fails to meet the specification.