The microprocessor supplies a nominal voltage to an analog output, {TAIL ~ this nominal voltage} allowing {HEAD ~ an automatic transducing} with any X Y recorder 
The microprocessor supplies a nominal voltage to an analog output , { TAIL ~ this nominal voltage } allowing { HEAD ~ an automatic transducing } with any X Y recorder
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH