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