{HEAD ~ Output impedance} of the DUT is compared to {TAIL ~ the resistance} of a reference resistor, and the comparator provides a control signal based on whether the output impedance falls within the pre set percentage variance of the reference resistance 
is compared to
{ HEAD ~ Output impedance } of the DUT is compared to { TAIL ~ the resistance } of a reference resistor , and the comparator provides a control signal based on whether the output impedance falls within the pre set percentage variance of the reference resistance
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH