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