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