The downloadable files are saved as .psd files requiring the PicoScope oscilloscope software to open and view. When the download dialog appears click "Save As" and save the file to a folder on your computer. Open the PicoScope oscilloscope software; if you do not have a PicoScope the Demo version can be downloaded and used for viewing the .psd files. In the PicoScope software click "File" and then select "Open", find the downloaded .psd file and click "open". Once opened you can take measurements and zoom in on the signals. All of the settings used to capture the original signal will be loaded into the PicoScope software, to collect new data hook up your equipment and select run.