Because the transmission structure uniformly transfers signals, the relative condition of the signals as they enter or leave each end will substantially match {TAIL ~ the condition} of the signals as measured or presented by the reference unit, thereby enabling {HEAD ~ calibration} of the network in reference to the device probing ends 
Because the transmission structure uniformly transfers signals , the relative condition of the signals as they enter or leave each end will substantially match { TAIL ~ the condition } of the signals as measured or presented by the reference unit , thereby enabling { HEAD ~ calibration } of the network in reference to the device probing ends
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH