{TAIL ~ The amplitude} of the output of {HEAD ~ receiver} 24 is sampled by sample/hold circuit 171 
{ TAIL ~ The amplitude } of the output of { HEAD ~ receiver } 24 is sampled by sample / hold circuit 171
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH