This category may be used to classify the Pad annular ring measurement according to the four pad types: PTH Pads, NPTH Pads, Via Pads and Non-Drilled Pads. Activate this option by setting the ERF variable classify_pad_ar to 1. Note that all annular ring categories do not report anything if a pad (or drill) is completely covered by solder mask. Zero annular ring may be reported if a solder mask clearance and a pad drill overlap but neither one includes the other.

Function

Reports undrilled pad to solder mask distances less than the pp_ar action parameter. Such a feature could be
a test point pad, fiducial, non-SMD, or non-drill pad.

Measurements are distance segments corresponding to the minimal distance between the pad and the clearance outline.

Activation

When the ERF variable classify_pad_ar is set to 1

Known Limitations

If the clearance is drawn, or if the clearance precisely covers the outer layer pad (1:1), the clearance ID will be r0.