{HEAD ~ The value} of {TAIL ~ the calibration counter} is preferably stored in a non volatile memory 
of
{ HEAD ~ The value } of { TAIL ~ the calibration counter } is preferably stored in a non volatile memory
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH