activation means for flooding the chip surface with pulsed ultraviolet laser light, causing photoelectron emission as a function of {TAIL ~ the voltages} at {HEAD ~ test points} on the wafer  
activation means for flooding the chip surface with pulsed ultraviolet laser light , causing photoelectron emission as a function of { TAIL ~ the voltages } at { HEAD ~ test points } on the wafer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH