We have found one software suitable in our database for this conversion.
The only way to export .dsn schematics from OrCAD PCB Designer as .pdf files, is to open them in the original software or some other supported viewer and print them as PDF using a virtual PDF printer installed, or via a dedicated PDF export function.
Unfortunately, it t seems there is no default PDF export function in OrCAD, so using the print method is likely the only way to convert dsn to pdf.
Updated: June 30, 2023
DSN
Files with dsn extension can be found as PCB schematics prepared and saved by the OrCAD, a PCB designing suite.
PDF
A pdf file extension is mainly used for Adobe Portable document format, commonly referred to as PDF. All programs that create some sort of documents or projects offer the possibility to export their format to PDF format. A free PDF viewer (Adobe Reader) is available for download from Adobe website.