ERF Variable |
Description |
nfp_clr_extend
|
In negative P&G layers, when a drill does not touch any
clearances, it can be a thermal or a drill drilled through an NFP. To check
spacing from the NFP to the plane, we use the features in the NFP spacing
calculation that are no further from the hole center than the maximum
distance, as follows: Hole radius + Drill to Copper parameter + NFP Spacing
parameter + nfp_clr_spacing
so that even NFPs with large annular rings will be measured for spacing. |