ERF Variables for Drill Checks

close_hole_dist

Maximum search radius for ‘Hole Separation’ tests. (default = 24 mils)

Close Holes — When non-touching holes are closer than this variable.

Close Holes

duph_tolerance

Defines the relationship between holes and pads. (default = 0.5)

They are defined as:

Duplicate Holes — Two holes whose centers are closer than this value.

Touching Holes — Two holes whose centers are further apart than this value, but touch.

Missing Holes — Two pads in top and bottom layers where all these apply:

• The distance between pad centers is no more than this value.

• No drill touches the top pad.

• Both pads are non SMD.

Duplicate Holes

Touching Holes

Missing Holes

max_thermal_dist

Distance within which to check for a thermal. If no thermal is found, results are reported to ‘No Thermal’.

No Thermal

min_pad_to_report_thermal

Minimum diameter of thermal pads to report on inner layers if the thermal has only one or two spoke gaps. Relates only to positive layers. (default=200mil)

No Thermal

min_trace_to_report_thermal

Minimum trace width (cumulative) to report thermals of either one or two spoke gaps on inner layers. Relates only to positive layers. (default=200mil)

No Thermal

v_aspect_ratio_calc_drill_span

Controls whether drill span is taken from the job attribute Thickness or calculated using the layer attributes .copper_weight and Thickness of Dielectric Below Layer.

0 — Drill Span taken from attribute Thickness. (default) Recommended where all drills are through hole and standard vias.

1 — Drill span calculated using attributes .copper_weight and Thickness of Dielectric Below Layer. Recommended where blind and buried vias are present and these attributes have been accurately defined.

TH Aspect Ratio

v_aspect_ratio_by_finished_size

Controls the size taken from the drill tool manager for drill diameter, finished or unfinished.

0 — Use drill size (drill diameter before plating).

1 — Use finished drill size (drill diameter after plating). (default)

TH Aspect Ratio

v_pcb_aspect_ratio_correction

The constant used in calculating the aspect ratio. (default=0)

TH Aspect Ratio

v_polarity_for_thermal_check

Controls the layers to be affected by the Thermal Connection checks.

All — All layers. (default)

Negative — Negative layers only.

Positive — Positive layers only.

No Thermal