{TAIL ~ The photoelectron patterns} are modified and processed by {HEAD ~ a luminescent target} 7, evaluation means 8 and voltage discrimination means 9 to represent test point voltages 
{ TAIL ~ The photoelectron patterns } are modified and processed by { HEAD ~ a luminescent target } 7 , evaluation means 8 and voltage discrimination means 9 to represent test point voltages
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH