Positive up and negative down (PUND)

pun4dpund: 1. a person who attempts to be an expert in the public eye, but fails. 2. one who thinks of themself as being more famous and well respected than they...PUND measured values are hhly dependent on the pulse width (ms) up to the point that the pulse width exceeds 10 RC, where R is the output impedance of the tester (normally 1680 W)