ACIS files come from the 3D ACIS Modeler, which is a CAD software package developed by Spatial Corporation (formerly Spatial Technology). You can import ACIS files up to v2016 1.0.
Select File | Import | ACIS to show the Import dialog box.
The file type list filters the current folder. If you select ACIS Files, you can choose to import a .sat, .asat, or .sab file.
Use the Import dialog box, and navigate to the folder that contains the file to import. Then select the file.
Click Import to import the CAD file. PC-DMIS imports the CAD file. A progress bar appears and indicates the progress.