09 - Known Good Practices

This section lists some of the good practices when using the Capture-Constrain Manager flow.

• Back up your design before enabling Constraint Manager. If enabled, you cannot change it to a non-Constraint Manager-enabled design.
• Modify the constraints after completing the design.
• Specify the Voltage property for power nets.
• Import the technology file in Constraint Manager to add physical and spacing constraints in the logical design.
• For distributed design environment, manage constraints in a single environment. It is recommended that constraints are added either in Capture or in PCB layout before running the schematic to PCB and PCB to schematic flows.
  If a board is associated with a design, to migrate constraints, ensure that you use the
  Importfrom physical layout option in the Migrate Constraints dialog box.

• Do not rename a Constraint Manager-enabled non-root-schematic design, else all the constraints will be lost.

If the Constraint Manager-enabled design is opened in a lower release version of Capture, the constraints will be preserved only if the design has not been modified.