{HEAD ~ The output signal} from {TAIL ~ this optical detector} 7 is sent via the preamplifier to the RMS DC 18, which converts the amplitude into a dc voltage 
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{ HEAD ~ The output signal } from { TAIL ~ this optical detector } 7 is sent via the preamplifier to the RMS DC 18 , which converts the amplitude into a dc voltage
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH