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small angle problems with DRC

Question asked by RBONTHOND on Oct 24, 2003

How does one handle small angles in the design rule checker ?

Lets imagine I have a circle that touches a rectangle in the layout. The area where the circle touches the rectangle will give DRC error (separation is to small) but this is not actually an error. The same thing happens when an trace has an >90 degree turn.

To be more precise: how do I handle the check between two adjacent edges (two edges that meet in a single point in a polygon) for width and notch checks where the angle is less than 90 degrees.

With regards,