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