{HEAD ~ A preferred method} for evaluating the signal channels of the network includes connecting {TAIL ~ a reference unit} to the reference junction and successively positioning each device probing end that corresponds to a signal channel of interest on the inner probing area 
includes connecting
{ HEAD ~ A preferred method } for evaluating the signal channels of the network includes connecting { TAIL ~ a reference unit } to the reference junction and successively positioning each device probing end that corresponds to a signal channel of interest on the inner probing area
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH