Cable interconnect introduces {HEAD ~ additional unknown delays} that have to be removed in {TAIL ~ a calibration process} 
Cable interconnect introduces { HEAD ~ additional unknown delays } that have to be removed in { TAIL ~ a calibration process }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL