During the normal operation procedure, {TAIL ~ the differential signal} is driven by the accurate current to {HEAD ~ the panel resistor} 
During the normal operation procedure , { TAIL ~ the differential signal } is driven by the accurate current to { HEAD ~ the panel resistor }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD