A part of {TAIL ~ the signal processing circuit} connected to the probe is isolated by an isolation circuit to secure {HEAD ~ the safety} 
A part of { TAIL ~ the signal processing circuit } connected to the probe is isolated by an isolation circuit to secure { HEAD ~ the safety }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD