PCB_Dlg-ChangeCenterDimensionCenter Dimension_AD

The Center Dimension dialog.

Summary

This dialog allows the designer to specify the properties of a Center Dimension object. A center dimension is a group design object. It allows for the center of an arc or circle to be marked.

Access

The Center Dimension dialog can be accessed prior to entering placement mode, from the PCB Editor – Defaults page of the Preferences dialog. This allows the default properties for the center dimension object to be changed, which will be applied when placing subsequent center dimensions.

During placement, the dialog can be accessed by pressing the Tab key.

After placement, the dialog can be accessed in one of the following ways:

• Double-clicking on the placed center dimension object.
• Placing the cursor over the center dimension object, right-clicking and choosing Properties from the context menu.
• Using the Edit » Change command and clicking once over the placed center dimension object.

Options/Controls

• Size - the current length of the dimension's crosshair lines.
• Rotation - the angle of alignment of the dimension, measured anti-clockwise in degrees from the horizontal.

Properties

• Layer - the layer the dimension is currently assigned to. Dimensions can be assigned to any available layer, click on the list to view and select a different layer, from all those currently defined for the board.
• Locked - enable this option to protect the dimension from being edited graphically.