ECAD > Working With ECAD Assemblies > Setting Up Board Design > Design Rules > About Design Rules
About Design Rules
Design rules are guidelines for a design. They are based on the material type and the manufacturing process of a part. You can copy any number of design rule tables to a design, but only one rule table can be assigned to a part at a time. You can modify the rules for a design by changing the default values of one or more of the rules listed in the assigned rule table. The design rules and names are standard and cannot be changed, but they can be customized using relations.
A standard rule table includes the following elements:
Rule
Description
Default Value
MIN_BTWN_CUTS_HOLES
Checks the minimum distance between cuts or between holes
5*T
MIN_BTWN_BND_CUT
Checks the minimum distance between a bend-line and a cut or a hole.
2.5 *T + R
MIN_SLOT_TAB_WIDTH
Checks the minimum width of the slot.
T
MIN_SLOT_TAB_LENGTH
Checks the minimum length of the slot.
0.7
MIN_CRNR_RADIUS
Checks the minimum dimension of the inside radius of a corner.
0.79
MIN_BND_RADIUS
Checks the minimum radius of a bend.
6*T
MIN_HOLE_DIM
Checks the minimum diameter of a hole.
0.076
To Create a Set of Design Rules
To Perform Standard Design Rule Operations
To Display Design Rule Information
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