The high voltages produce greater phase detection output voltages and further reduce {HEAD ~ the susceptibility} of {TAIL ~ the meter} to noise and interfering signals 
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The high voltages produce greater phase detection output voltages and further reduce { HEAD ~ the susceptibility } of { TAIL ~ the meter } to noise and interfering signals
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH