default parameters for each type of length-tuning pattern (single-track length, differential-pair length, and differential-pair skew). These defaults can be overridden in the properties of each tuning apply to each net class. Every class has values for copper clearance, track width, via sizes, and differential pair sizes. These values will be used when creating tracks and vias unless a more specific rule chooser, then click again after choosing a footprint to confirm its location. Route tracks / route differential pairs: These tools activate the interactive router and allow placing tracks and vias. The interactive

while IBIS_DRIVER can be used for simulating driver pins. There are also variants of each for differential pins. Pin Assignment Simulation models may have their pins numbered differently than the corresponding supports the .plot directive, it cannot be used in current versions of KiCad. Differential voltage Probing differential voltages usually requires a simulation symbol. One is available in Simulation_SPICE:VOLTMETER_DIFF in the official libraries. This symbol has two terminals for differential voltage sensing, and one the user can probe. NOTE A SPICE model called kicad_builtin_vdiff