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