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