3M 965DPS Modem User Manual


 
93
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.