Function |
Negative layer only. Reports PTHs and via drills that do not touch features
(that is, PTHs and via drills that are embedded in copper). It finds the minimal distance between the copper island in which they are located and another copper island or copper plane. Measurement included if the measured distance is less than the action parameter pp_nfp_spacing .\ |
Activation |
When the layer is negative. |
This logic applies regardless of how the
NFPs are defined, whether as donuts, as a combination of positive and negative
pads,
or drawn.