wherein the second time difference is between falling edges of {HEAD ~ the first component} of {TAIL ~ the distributed differential signal} and the second component of the phase shifted signal, and 
of
wherein the second time difference is between falling edges of { HEAD ~ the first component } of { TAIL ~ the distributed differential signal } and the second component of the phase shifted signal , and
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 TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH