ERF Variables for Silk Screen Checks

Variables set in the ERF file control the analysis.

ERF Variable

Description

Categories Affected

len2width_ratio

Minimum ratio of length to width for the ‘Line Widths’ category.

Line Widths

max_line_width

Maximum line width of lines in the ‘Line Widths’ category

Line Widths

min_line_len

Minimum line length of lines in the ‘Line Widths’ category, also minimum overlap between lines to report in parallel spacing

Line Widths

v_hole_clearance_consider_sm

Determines whether to report only drills within SM clearances too close to silk screen features or all drills, even those without SM clearances.

yes — Report spacing violations only if SM clearance is present. (default)

no — Report all spacing violations.

PTH Pad Clearance

Via Pad Clearance

NPTH Pad Clearance

Undrilled Pad Clearance

NPTH Clearance

PTH Clearance

Via Clearance

v_one_width_report_per_letter

Determines how line width of silk screen features is reported.

no — Report line width for each individual feature

yes — Report the line width of one feature of a group of connected features (as in a letter or number)

Line Widths

v_report_include_sm_as_zero

Determines whether to report silk screen features completely covered or included in solder mask features.

0 — (default) Do not report silk screen features completely covered or included in solder mask features.

1 — Report such features as a segment of zero length.

SM Clearance

v_report_only_string_feature

Determines which silk screen features are reported.

no — Reports all silk screen features. (default)

yes — Reports only silk screen features with the attribute String Value.

SM Clearance

SMD Clearance

All Pad Clearance categories

All Hole Clearance categories

v_results_grouping

Determines how silk screen results are reported.

0 — (default) no grouping of silk screen results is performed and each measurement between a silk screen feature and another feature is reported individually.

1— Silk screen results are grouped according to the same String Value attribute, and only one measurement is reported between the grouped features and other features.

2 — Silk screen results are grouped and the measurement between the group and another feature is the shortest measurement possible.

If the non-silk screen feature (smd, sm, drill, etc.) is larger than 200 mil, mode 1 is used.

See “Grouping of Silk Screen Results” for an illustration.

SM Clearance

SMD Clearance

All Pad Clearance categories

All Hole Clearance categories