The perturbations are sufficiently small so as to not drive the sensor out of {HEAD ~ the current limiting range} of {TAIL ~ operation} 
of
The perturbations are sufficiently small so as to not drive the sensor out of { HEAD ~ the current limiting range } of { TAIL ~ operation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL