The first time difference may be a time difference between rising edges of {HEAD ~ a first component} of {TAIL ~ the differential signal} and a second component of a phase shifted signal 
of
The first time difference may be a time difference between rising edges of { HEAD ~ a first component } of { TAIL ~ the differential signal } and a second component of a phase shifted signal
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH