A connector can be pressed with force that iproportional to the
actual resisting force detected during the pressing cycle.We call
this Percent Above Range Sample, or PARS.In this technique,
the connector’s resisting force while pressing is
sampled and averaged over a distance range above final seating to
the board surface. The final force percent added assures complete
seating of the connector.This is the most widely used technique
because it limits the stress to the assembly, but does not require
great accuracy for board thickness measurement.