Purpose

In some cases, stubs indicate an error in the design. Normally, lines end with pads, or are drilled by component holes or vias (wide ground conductors).

Function

Reports line endpoints that do not touch any other feature. Measurements are shapes representing the endpoints (e.g. a circle for a round capped line).

When two identical lines lie on top of each other, the two lines' endpoints touch each other. This is reported, if the end points do not touch other features. Drilled line endpoints are not inserted as measurements.

Activation

 

Known Limitations

*    Features tagged with the .pattern_fill attribute are not tested for Stubs in order to improve performance.

*    The endpoints of lines that are shaved (touching successive negative features) are not inserted as measurements.

*    When two circuit lines coincide, possibly a false alarm will be reported at the end of the wider line.