Purpose

A hole that is supposed to be connected to copper must have a sufficiently large annular ring of copper. If this is not adhered to, shifts of the drill and the imaging process may cause the drill not to have sufficient contact.

Function

 

Reports, for drills embedded in copper, the distance to the closest laminate, if less than the action parameter pp_d2c . An option is available to allow breakouts by specifying the breakout angle (as defined by the ERF parameter pth_breakout_angle ).

Range of breakout angle values= 0-180 where 0 means No Breakouts Allowed.

Activation

 

Known Limitations

In positive P&G layers no associated copper features are reported.

In most cases these drills are drilled thru thermal pads; the annular ring indicates the quality of the connection. With negative P&G layers, the associated ID from the P&G layer is a thermal pad.