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Parent page: PCB Objects
Two bottom layer Keepout Arcs: on the left is a Full Circle Keepout Arc; on the right
is a Keepout Arc selected for editing.
An arc is a primitive design object. It is essentially a circular track segment that can be placed on any layer. As well as the standard arc that is used for design tasks such as defining a component outline or curved routing, there is a second type of arc available, referred to as a keepout arc. A keepout arc can be placed on a signal layer to create a layer-specific barrier or no-go region. They also can be placed on the Keepout layer where they will apply to all signal layers. The difference between a standard arc and a keepout arc is that layer-specific keepout-type arcs are not included in output generation, such as Gerber or ODB++. A keepout arc is identified by having an outline in the Keepout color.
Keepout Arcs are available for placement in both PCB and PCB Library Editors. There are four keepout arc placement modes available (Center, Edge, Any Angle, and Full Circle). The modes are described in the Placement section.
The way in which an arc is placed depends on the particular method of placement that you have chosen to invoke. Four different methods of arc placement are supported:
Command page: Place Keepout Arc by Center
After launching the command, the cursor will change to a cross-hair and you will enter arc placement mode. Placement is made by performing the following sequence of actions:
Command page: Place Keepout Arc by Edge
After launching the command, the cursor will change to a cross-hair and you will enter arc placement mode. Placement is made by performing the following sequence of actions:
Command page: Place Keepout Arc by Edge (Any Angle)
After launching the command, the cursor will change to a cross-hair and you will enter arc placement mode. Placement is made by performing the following sequence of actions:
Command page: Place Keepout Full Circle
After launching the command, the cursor will change to a crosshair and you will enter arc placement mode. Placement is made by performing the following sequence of actions:
Additional actions that can be performed during placement are:
This method of editing allows you to select a placed arc object directly in the workspace and graphically change its size, shape or location.
When a keepout arc object is selected, the following editing handles are available:
The following methods of non-graphical editing are available:
Properties page: Keepout Arc Properties
The properties of a Keepout Arc can be edited in the PCB editor's Properties panel, which allows editing of all item(s) currently selected in the workspace.
Properties for a layer-specific keepout arc shown on the left, and an all-layers keepout arc on the right.
During placement, the panel can be accessed by pressing the Tab key.
To access the properties of a placed keepout arc:
Panel pages: PCB List, PCB Filter, PCBLIB List, PCBLIB Filter
The List panel allows you to display design objects from one or more documents in tabular format, enabling quick inspection and modification of object attributes. Used in conjunction with appropriate filtering - by using the applicable Filter panel, or the Find Similar Objects dialog - it enables the display of just those objects falling under the scope of the active filter – allowing you to target and edit multiple design objects with greater accuracy and efficiency.
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