recording the digital sample data in association with {HEAD ~ the respective time difference} at {TAIL ~ the transition} of the sample clock 
recording the digital sample data in association with { HEAD ~ the respective time difference } at { TAIL ~ the transition } of the sample clock
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH