A scaling device amplifies the radiant energy signal levels of the input array and the digital array so that {HEAD ~ the radiant energy signal level} carried by {TAIL ~ the digital array} corresponds to the threshold level 
carried by
A scaling device amplifies the radiant energy signal levels of the input array and the digital array so that { HEAD ~ the radiant energy signal level } carried by { TAIL ~ the digital array } corresponds to the threshold level
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH