Configuring PCB Arc Object Properties in Altium Designer

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Parent page: Arc

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 Arc 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 (access 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 Arc object properties are available for editing in the Properties panel when a placed Arc is selected in the workspace.

The Arc default settings in the Preferences dialog and the Arc mode of the Properties panel    The Arc default settings in the Preferences dialog and the Arc 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".

Net (Properties panel only) 

  • Net - use the drop-down to select the net to which this arc belongs. All nets for the active board design will be listed in the drop-down list. Note that if object placement commences at the same location as an existing object that is already connected to a Net, then the Net property of the new object is automatically assigned to that Net. Select No Net to specify that the arc is not connected to any net. The Net property of a primitive is used by the Design Rule Checker to determine if a PCB object is legally placed. 
  • Net Class - displays the net class. This field is dependent upon the net selected in the Net field and is not editable.
  • Net Length - displays the net length. This field is dependent upon the net selected in the Net field and is not editable.

Location (Properties panel only) 

The   icon to the right of this region must be displayed as  (unlocked) in order to access the below fields. Toggle the lock/unlock icon to change its lock status.
  • (X/Y) 
    • X (first field) - this field shows the current X position of the center of the arc relative to the current origin. Edit the value in the field to change the position of the arc relative to the current origin. The value can be entered in either metric or imperial; include the units when entering a value whose units are not the current default. Default units (metric or imperial) are determined by the Units setting in the Other region of the Properties panel in Board mode (accessed when no objects are selected in the workspace), and are used if the unit is not specified. 
    • Y (second field) - this field shows the current Y position of the center of the arc relative to the current origin. Edit the value in the field to change the position of the arc relative to the current origin. The value can be entered in either metric or imperial; include the units when entering a value whose units are not the current default. Default units (metric or imperial) are determined by the Units setting in the Other region of the Properties panel in Board mode (accessed when no objects are selected in the workspace), and are used if the unit is not specified. 

Properties

  • Layer - this field displays the layer to which the arc is currently assigned. Arcs can be assigned to any available layer. To change the assigned layer, click the field and select a layer from the drop-down list. 
  • Width - this field displays the with of the arc line. Enter a different value for the width if required.
  • Radius - this field displays the radius of the arc measured from the center point to the center of the arc line. Enter a different value for the radius if required.
  • Start Angle - this field displays the start angle of the arc measured from the X axis in the first quadrant (plane geometry). Enter a different value for the start angle if required.
  • End Angle - this field displays the end angle of the arc. Enter a different value for the end angle if required.

Paste Mask Expansion

  • Rule - select to have the paste mask expansion for the arc follow the defined value in the applicable Paste Mask Expansion design rule. The associated expansion value will be disabled if this option is chosen.
  • Manual - select to override the applicable design rule and specify the paste mask expansion value for the arc in the field below. 

Solder Mask Expansion

  • Rule - select to have the solder mask expansion for the arc follow the defined value in the applicable Solder Mask Expansion design rule. The associated expansion value will be disabled if this option is chosen.
  • Manual - select to override the applicable design rule and specify the solder mask expansion value for the arc in the field below.
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注記

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