The Anritsu ME4553L is used to measure the transmission line characteristics in the BB and IF bands in terrestrial microwave radio relay systems and in satellite communication systems. The distortion of these transmissions can be measured and analyzed with the ME453L. The ME453L Microwave System Analyzer can also be used to measure FDMFM links and digital microwave communication links. The ME453L is useful in link device adjustment, construction, maintenance, and research and development applications.