Configuring PCB Region Keepout Object Properties in Altium Designer

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Parent page: Region Keepout

PCB Editor object properties are definable options that specify the visual style, content and behavior of the placed object. The property settings for each type of object are defined in two different ways:

  • Pre-placement settings – most Region Keepout object properties, or those that can logically be pre-defined, are available as editable default settings on the PCB Editor - Defaults page of the Preferences dialog (accessed from the  button at the top-right of the workspace). Select the object in the Primitive List to reveal its options on the right.
  • Post-placement settings – all Region Keepout object properties are available for editing in the Properties panel when a placed Region Keepout is selected in the workspace.
For more information about Keepouts, click here.

The Region Keepout default settings in the Preferences dialog and the Keepout - Region mode of the Properties panel         The Region Keepout default settings in the Preferences dialog and the Keepout - Region mode of the Properties panel

In the below properties listing, options that are not available as default settings in the Preferences dialog are noted as "Properties panel only".


  • Restricted for Layer - use the drop-down to select the layer on which the region keepout is located.​​
  • Locked (Properties panel only) - enable to lock the region keepout.

Outline Vertices (Properties panel only)

This region is used to modify the individual vertices of the currently selected region object. You can modify the locations of existing vertices, add new vertices or remove them as required. Arc connections between vertex points can be defined, and support is also provided for exporting vertex information to and importing from a CSV-formatted file. You also can adjust the position of the region object by globally applying delta-x/delta-y values to all vertex points.

  • Vertices Grid - lists all of the vertex points currently defined for the region in terms of:
    • Index - the assigned index of the vertex (non-editable).
    • X - the X (horizontal) coordinate for the vertex. Click to edit.
    • Y - the Y (vertical) coordinate for the vertex. Click to edit.
    • Arc Angle (Neg = CW) - the angle of an arc that is drawn to connect this vertex point to the next. By default, connections are straight line edges, with this field remaining blank. Click to edit then enter an arc angle as required. Entry of a positive value will result in an arc drawn counterclockwise. To draw a clockwise arc, enter a negative value.
Straight line edges are used to connect one vertex point to the next. If you would rather have an arc connection, enter a value for the required Arc Angle. Entry is made in the field associated to the source vertex point, with the arc being from this vertex to the subsequent vertex below in the list.
  • Add - click to add a new vertex point. The new vertex will be added below the currently focused vertex entry and will initially have the same X,Y coordinates as the focused entry. Click the   to remove the currently selected vertex.

Keepout Restrictions

Use this region to select which object types will be restricted by the Keepout. Deselecting an object type will cause the Keepout to allow transgressions by that type of object (not kept out) by not imposing the applicable Clearance Rule. Choices include:

  • Via
  • Track
  • Copper
  • SMD Pad
  • TH Pad
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