# Differential-pair impedance screening
# Scope: Differential impedance from supplied odd-mode impedance; coupling must come from stackup solver.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

oddMode = 50 ohm
target = 100 ohm
tolerance = 10 ohm

differential := 2*oddMode [ohm]
error := abs(differential-target) [ohm]

check impedance tolerance: error <= tolerance

scenario alternative: oddMode = 40 ohm