A simple, robust software tool designed to visualize and present time based transient signal data. It supports the importation of signal data files in industry standard COMTRADE file formats. A powerful set of time based graphs with smart axis and aperture controls allow the user to easily view and navigate through the data. Additional support allows the user to save and restore the display and the data in a workspace file. Multiple data files can be loaded simultaneously and compared. Graphs and data can be clipped and pasted into MS Word, Excel or printed directly.