Circuit to Circuit (Spacing)

Reports unconnected circuit elements closer than pp_spacing in the same layer.

Internal ERF Name	<Area>:c2c
Measurement Shape Measurement Value Measurement ID	Segment Spacing Circuit1; Circuit2
Layers Displayed	Signal layer
Graphic
Purpose	Close circuits may bridge during imaging, etching, plating or soldering, and result in a direct short.
Function	Reports unconnected circuit elements closer than pp_spacing in the same layer. Measurements are segments, provided they only touch copper at its end points. Does not report measurements involving features with attribute Copper Feature Ignore. Jobs created directly from a CAD database, contain extra functionality. A measurement between two circuits of the same CAD net, even if unconnected in the same layer, are reported to ‘CAD Self Spacing’ rather than ‘Circuit to Circuit’. Violations occurring when rout features or non-plated holes cross copper features are also reported to this category. Make sure the respective layers (rout and npth drill) are displayed. Otherwise, measurements seem to be embedded within a copper feature. Activating the relevant layer reveals that the copper feature has been cut into two very close surfaces.
ERF Parameters	pp_layer pp_spacing
ERF Variables	v_surface_spacing_separately
Constraint	Feature Spacing
Limitations