A method of using a vector network analyzer (VNA) for coordinated Voltage
Standing-Wave Ratio (VSWR) and Time Domain Reflectometry (TDR)
measurement includes configuring the VNA for identifying discontinuities
correlated to a VSWR lobe. In some embodiments, the method includes
identifying a largest VSWR lobe in a frequency band of interest, using
phase data associated with an S.sub.11 scattering parameter to find the
correct electrical delay required to align Low Pass Step Transform data,
and configuring the Low Pass Step Transform span and center time to align
coherent inductive and capacitive discontinuities relative to grid lines
of a TDR display. In some embodiments, the method is automated.