EXFO FTB-610 Wideband Copper Test Module - Manual (Page 209)

TDR Test
Copper Test 201
Xtalk TDR

Hold trace graph control icon holds the current TDR on screen for
comparison to a new live trace. The held trace is not saved. Select
Save Trace to store a trace in memory for later recall. The icon is only
enabled when at least one trace is configured as Hold in Trace Setup
on page 194.
Hookup Diagram
The Xtalk TDR feature displays a hookup diagram in a popup window at
the beginning of the test, showing you how to connect 2 pairs. The hookup
diagram uses the following graphic and textual components:

OK button closes the hookup diagram prompt and starts the test.

Cancel button closes the hookup diagram prompt only; you must tap
Start to run the test.

The Confirmation window is prompted before every Xtalk TDR test is
started. You can select Hide diagram next time which will not display
the connection diagram the next time you run the test.