Clearance Class Manager Dialog

The Clearance Class Manager dialog allows you to create multiple clearance classes, and specify the design rule stack referred to between nets in each clearance class. Design rule stacks are created in the Rule Editor dialog, Conductor Clearance: Conductor tab. The clearance classes that you create can be assigned in the Design Rule tab in the Signals section, Signals tab or Signals section, Classes/Groups tab in Constraint Browser. The Clearance Class Manager dialog is displayed by clicking Utility > Clearance Class Manager in Constraint Browser or by clicking on the Constraint Browser toolbar.

When creating a new PCB design, clearance classes can be added from a schematic design by clicking Load clearance rules into the design in the New (Design Data) dialog. You can also forward annotate them from a schematic design by selecting Load clearance rules into the design in the Forward Annotation dialog.

Item	Description
New clearance class name	Define a name for the clearance class and click Create. The new clearance class is displayed in the Clearance Class box. Multiple clearance classes can be created simultaneously by entering multiple names, separated by a space.
Create	Creates the clearance classes that you define in the New clearance class name box, and displays them in the Clearance Class box.
Clearance Class	Displays the clearance classes that you create in the New clearance class name box. The Unclassed clearance class item is created by default.
Rename	Allows you to rename a selected item in the Clearance Class box. Alternatively, right-click an item in the Clearance Class box and select Rename on the assist menu. Type a new name and press Return.
Delete	Allows you to delete a selected item in the Clearance Class box. Alternatively, right-click an item in the Clearance Class box and select Delete on the assist menu.
Clearance Class Matrix	Allows you to specify the design rule stack that is used between nets in each clearance class that you create, and the Unclassed clearance class. Design rule stacks are created in the Rule Editor: Conductor Clearance - Conductor Tab. They are created in the Design rule stack section. Clearance classes are shown in each axis of the table, and specified design rule stacks are shown in each cell. In Constraint Browser for eCADSTAR PCB Editor, click the button in the column associated with each clearance class to display the Same net design rule stack dialog. Specify a design rule stack by selecting it in the dialog, and clicking OK. Note To specify a design rule stack for multiple cells: In the clearance setting matrix, select multiple cells by pressing the CTRL or SHIFT key, or by dragging the cursor. Click in one of the selected cells. In the Same net design rule stack dialog, specify a design rule stack and click OK. The specified value is added to all selected cells In Constraint Browser for eCADSTAR Schematic Editor, specify a design rule stack by typing its name in the column associated with each clearance class. The specified value must exactly match a design rule stack in the Rule Editor: Conductor Clearance - Conductor Tab.
Close	Saves your changes and closes the Clearance Class Manager dialog.

Note

The Unclassed clearance class cannot be deleted or renamed.
Any items on a conductor layer that have no net attached (unconnected) are considered Unclassed in the Clearance Class Manager. Clearances defined between classed items and unclassed items are checked for errors by the Design Rule Check (DRC) command, with reference to the assigned design rule. Consequently, errors may be listed in the Check Results Dialog between net based and no-net based conductor items.

Related Topics
Clearance Class Dialog
Creating, Renaming or Deleting Clearance Classes
Defining Clearances between Clearance Classes
Defining Clearance Classes for Signals
Configuring Clearance for Conductors
Rule Stack Dialog
Constraint Browser
Creepage Check
Creepage Check Results
Conductor Clearance: Voltage Difference Tab