Altium Designer Documentation

Import from AutoCAD (SCH)

Created: July 28, 2015 | Updated: March 9, 2018
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The Import from AutoCAD dialog
The Import from AutoCAD dialog

Summary

The Import from AutoCAD dialog provides controls to import graphic data from AutoCAD *.DXF or *.DWG files into the current Schematic document.

Access

To access the dialog, with the Schematic Editor active, select File » Import » DXF/DWG from the main menus. Use the file browser to choose an AutoCAD file to open.

Options/Controls

Blocks

  • Import as components – the Importer will attempt to parse AutoCAD Blocks (grouped collections of primitive objects) as singular components, and then add these to a Schematic Library.
  • Import as primitives the Importer will parse all AutoCAD object data, including objects in Blocks, as primitive/base objects (lines, arcs, etc.).

AutoCAD to Altium Designer Line Width Mapping (mm)

When AutoCAD Line data uses nominal, non-numerical width definitions (Smallest, Small, etc.), the Importer will map these to the width dimensions (in mm) specified here. The Large line width is automatically determined.

Scale

Set the AutoCAD import scaling factor to suit the target document. The associated Size text is colored red when the boundary definition of the imported graphic (reported as Size) is larger than the target Schematic sheet (Sheet size).

Source DXF/DWG files that have been created with the units set to Mils are more likely to scale at a 1:1 ratio when imported.

Locate AutoCAD (0,0) at

  • X, Y – map the zero point from the imported AutoCAD drawing to the specified X/Y point on the target Schematic sheet.
  • Select – use the cursor to graphically set the import zero point on the Schematic.
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