EXFO VDSL2 - Manual (Page 59)

Auto Tests
Copper, VDSL2, ADSL2+ and IP Triple-Play Test Set 51
Running Inactive Pair Test and Viewing Results
Loop Mapper
The Loop Mapper tab allows you to
view results of the Loop Mapper test in
graphical and text form.
TDR Graph
The TDR Graph tab displays the
current Pulse/Gain and measured
values from the time domain
reflectometry tests. TDR first attempts
to find the length of the circuit and then
searches all ranges from shortest to
longest for significant events. Upon
completion, the test selects the nearest
major event, sets the range to match,
and aligns the cursor with the event.
To make TDR adjustments via the keypad:
1. Press
to change the mode button (top-right corner of the pane)
and function of the up/down arrow keys.
2. Press repeatedly to cycle between:
³
Zoom
³
CursorMarker selection