{TAIL ~ Each} is connected to {HEAD ~ an adjustable amplitude precision current source} of fixed frequency and an oversampling type digital voltmeter 
{ TAIL ~ Each } is connected to { HEAD ~ an adjustable amplitude precision current source } of fixed frequency and an oversampling type digital voltmeter
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH