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TDR
This function shows the pair as a “trace” on the 
screen.  TDR measures distance to events based on 
input about the pair.
Press the [Up] or [Down] keys to move to a desired 
selection. Press the [Enter] key to accept the choice and 
start the measurement.
TDR Setup
TDR features a setup function that allows you to enter 
the cable type, gauge and first length.  Vp is then 
automatically set from these selections.  Press the [Setup] 
key to change the Cable Type, Gauge, or to select either 
minimum first length or last used.
There are six modes to view a pair: 1) Single Trace to 
view a single pair. 2) Dual Trace to view two pairs at the 
same time. 3) Differential to view the difference between 
two pairs. 4) Crosstalk to view the electrical coupling 
between two pairs. 5) Memory to compare a “live” trace 
with a trace stored in memory. 6) Peak to display a history 
of maximum and minimum values with the live trace.