Purpose |
The rout, which represents the edge of the board, must be isolated from the copper planes in order to avoid shorting the signal to the card cage. |
Rout to Copper |
Negative layers - reports distances between
rout skeletons and the edges of surrounding clearances that are less than the
pp_r2c action
parameter. If there are no clearances around the rout skeleton, the distance
is set to zero. Positive layers - reports skeletons (center
lines) of rout features that are too close to copper features. Included if
the distance between the rout skeleton and the copper is less than the pp_r2c action parameter. Measurements are segments representing the distance between
the rout lines and copper features. When the measurement is required to be to the compensated
rout, then specify the parameter pp_use_compensated_rout
= Yes. |
The two most common types of this kind of violation are:
*
The NPTH drills out a spot pad.
* The NPTH is drilled thru copper that neither includes
it nor is included in it, in other words the NPTH bites copper.