If you use TachyCAD on a Trimble Total Station, at the end of the installation process, enable the Install Trimble Precision SDK (TPSDK) option. By default, this option is disabled. If you get one or more messages stating .NET Framework version 3.5 is missing, click Cancel. The TPSDK requires the .NET Framework and works well with the more recent framework versions that come with newer operating systems, such as Microsoft Windows 10.
software development toolkit, total station interface