The Drill Checks action is a read-only action intended to find potential manufacturability defects in drill layers (thru, buried and blind via layers) and generate statistics on drill layers. The action is intended to operate only on drill layers. It uses the drill layer, the top and bottom layers of its drilled stack and any P&G layers in the stack. Categories, reports and attributes are generated.
The following tests can be applied to drill layers, as listed in the Action Screen above and immediately below:
1.
Hole Size - provides a list of all PTHs, NPTHs, and vias, as well
as NPTHs that need pilot drills.
2.
Hole Separation - reports duplicate holes, touching holes and
close holes.
3.
Missing Holes - reports missing drills for non-SMD pads.
4.
Extra Holes - reports redundant drills that do not belong to any
pad.
5.
Power/Ground Shorts - reports drills touching large copper nets of
more than one P&G layer.
6.
NPTH to Rout - reports drills that have the .tooling_hole , .mount_hole attributes and NPTHs that
are close to the rout path.
A summary of Feature attributes used during the Drill Checks is shown below.
Attribute |
Description |
...num_pth
|
PTHs found by the action |
...num_npth
|
NPTHs found by the action |
...num_via
|
Vias found by the action |
...num_2drill |
NPTHs in need of a pilot drill |
...num_duph
|
Duplicate holes found by the action |
...num_touchh
|
Touching holes found by the action |
...num_closeh
|
Close holes found by the action |
...num_missh
|
Missing holes found by the action |
...num_extrah
|
Extra holes found by the action |
...num_pgshort
|
Total of all kinds of P&G shorts found by the action.
Summary of the number of measurements in the PGSHORT_3 - PGSHORT_10_UP and
all the PGSHORT_<layer name 1>_<layer name 2> categories |