The MS4640A Series VNA is an instrument system that contains a built-in source, test set, and analyzer. Test results are displayed real time on a front panel touch screen or also to a separate video monitor. Screen captures can easily be printed or saved in common graphic file formats. Depending on the model and installed options, the MS4640A Series VNAs provide a maximum frequency range from 70 kHz to 70 GHz for standalone VNAs.