Design rules categories

Fusion divides design rules into categories based on their type. Each category has two checking levels: Live DRC and Manual DRC. By default, Fusion enables all rule categories for Manual DRC.

Fusion splits rule categories into unary and binary types:

Unary Rules: Apply to a single object, for example, Copper Width or Drill Size.
Binary Rules: Apply to two objects, for example, Copper Clearance or Board Outline Clearance.

Rule Category Levels

Live DRC

When enabled, Fusion checks the rule categories during a Live DRC run. This occurs at the end of any interactive workflow when the data model changes.

Manual DRC

When enabled, Fusion checks the rule category during Manual DRC runs. You can run Manual DRC using one of the following methods:

DRC on the command line Interface (CLI).
Click Check Design Rules on the rules toolbar.

Rule Categories Definition Table

Category Name	Enabled
	Live DRC	Manual DRC
Copper Clearance	Yes	Yes
Component Exclude Clearance	Yes	Yes
Soldermask - Silkscreen Clearance	Yes	Yes
Board Outline Clearance	Yes	Yes
Drill Clearance	Yes	Yes
Copper - Restrict Clearance	Yes	Yes
Via Restrict Clearance	Yes	Yes
Unconnected Lines	Yes	Yes
Drill Size	Yes	Yes
Copper Width	Yes	Yes
Acute Angle	Yes	Yes
Air Wire	Yes	Yes
Wire Stub	Yes	Yes
Matched Signal Lengths	Yes	Yes

Note : To get the best Preferred Value for the current rule category, enable the Manual DRC level. This checks all rule categories.