A system for detecting movement of a forcer of a motor directed for effecting movement of a forcer in {HEAD ~ a first direction} in {TAIL ~ response} to command pulses 
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A system for detecting movement of a forcer of a motor directed for effecting movement of a forcer in { HEAD ~ a first direction } in { TAIL ~ response } to command pulses
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH