Based upon the impact force represented by the signal, an adjustment of {HEAD ~ at least one performance parameter} of {TAIL ~ the moveable barrier operator} is determined 
of
Based upon the impact force represented by the signal , an adjustment of { HEAD ~ at least one performance parameter } of { TAIL ~ the moveable barrier operator } is determined
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH