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