The Agilent 8720ES / HP 8720ES Network Analyzer features a 50 MHz to 20 GHz frequency range and provides users with a tool for complete analysis of RF as well as microwave equipment. The Agilent 8720ES has two independent measurement channels providing users with the ability to input separate parameters such as start and stop frequencies and number of points that can be viewed on any one of its four display channels. This unit has the ability to display multiple combinations of reflection and transmission parameters in a variety of formats including, magnitude, phase, group delay, smith chart, polar, SWR, and Time Domain. The HP 8720ES Netwok Analyzer has an incorporated synthesized source, test set and receiver. With its S-parameter test set you have a full range of magnitude and phase measurements with frequencies from 50 MHz to 20 GHz.