Battery supply ground is in common with one of the defibrillator leads, and conventional pacers provide {TAIL ~ pacer pulses} with respect to {HEAD ~ battery ground} 
Battery supply ground is in common with one of the defibrillator leads , and conventional pacers provide { TAIL ~ pacer pulses } with respect to { HEAD ~ battery ground }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD