{TAIL ~ Sample/hold circuit} 171 captures the analog data for {HEAD ~ processing} by filter 50 
{ TAIL ~ Sample / hold circuit } 171 captures the analog data for { HEAD ~ processing } by filter 50
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH