Changing Backdrill Settings

To open the Backdrill Settings window, click Advanced > Backdrill Settings.

The left pane allows you to select or deselect nets and padstacks. The right pane displays vias associated with your selection.

Selecting a single backdrill via causes the modeling workspace to zoom in on it. When more than one via is selected, nothing is zoomed.

To enable or disable backdrilling project-wide:

• Select or clear the Activate Backdrilling check box.

  

To assign a backdrill to one or more vias:

1. Use the filters in the left pane to find the via(s) to which you want to add backdrills.
2. Select the via(s) from the list on the right. Use Ctrl+click to select more than one via, or use the Select All button to select all vias in the list.
3. From the Backdrill Top and Backdrill Bottom areas, enter the information for your backdrill:
   • From Top to Layer – when creating a top backdrill, the backdrill begins at the top layer and ends at the layer you select. The Auto setting identifies the stub and selects an appropriate layer.
   • From Bottom to Layer – when creating a bottom backdrill, the backdrill begins at the bottom layer and ends at the layer you select. The Auto setting identifies the stub and selects an appropriate layer.
   • Diameter – the diameter of the backdrill.
   • Setback – the diameter required at the top or bottom layer.
4. Click Assign Backdrill.

   The via list updates with the new backdrill information.

5. Click Close.