{TAIL ~ The invention} provides a device and method for determining whether an incrementing forcer has stepped the proper number of steps required by {HEAD ~ command pulses} provided to the motor forcer 
{ TAIL ~ The invention } provides a device and method for determining whether an incrementing forcer has stepped the proper number of steps required by { HEAD ~ command pulses } provided to the motor forcer
TAIL TAIL TAIL TAIL TAIL TAIL OTH 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 OTH OTH OTH OTH OTH