It saves the circuit schematic and is often one of several files included in a OrCAD project. but i don’t know how to export cpm from dsn file and how to change your settings if you do not want cookies on your computer. ORCAD DSN FILE TO cpm I want to make new Schematic (cpm file) using SPB Allegro from DSN file. View, edit, and convert your schematic files for free, then share and embed them on the web. A DSN file is a PCB (printed circuit board) design file created by OrCAD, However, you can also import DSN files in Altium Designer as schematic files using.