The HP 8720D is a high performance vector
network analyzer forlaboratory or production measurements of reflection and transmissionparameters. It integrates a high resolution synthesized RF source, anS-parameter test set, and a four-channel three-input receiver to measureand display magnitude, phase, and group delay responses of active andpassive RF networks.
Two independent primary channels, twoauxiliary channels, and a large screen color display show the measuredresults of one or all channels, in Cartesian or polar/Smith chartformats.