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Use the Crosstalk mode to display the amplitude and 
location of signals that “cross” from one pair to the 
other, as could be caused by a split.
For both Differential and Crosstalk, connect the red 
and black test leads to the pair under test. Connect 
the blue and yellow test leads to the reference pair.
The pair under test is displayed at the top of the 
screen. The reference pair is displayed at the bottom 
of the screen.   Any changes in the control parameters 
affect both traces. It is not possible to control each 
trace independently.  
Dual Trace is used to compare two pairs at the same 
time (usually a faulted and a good pair). 
Differential and Crosstalk
Use the Differential mode to display only the 
differences between two pairs (usually a ‘good’ pair 
and a pair under test).