EXFO VDSL2 - Manual (Page 106)

Fault Location Tests
98 AXS-200/635
Loop Mapper Test
Loop Mapper Test
The LoopMapper test allows you to easily identify faults in the cable with
increased resolution using time domain reflectometry (TDR) and
frequency domain reflectometry (FDR). This test is extremely useful in
locating bridge taps and the end of the cable. Faults such as open ends and
shorted ends can be easily found using the enhanced resolution of the FDR
test.
Note: This test is only available if LoopMapper is enabled in the software options.
Test Setup
The Test Setup tab allows you to configure parameters for the Loop
Mapper test.
Define the Cable Type by selecting the
gauge of the cable in use. If wire gauge
is measured in AWG units, the
available choices are: AUTO, 19 AWG,
22 AWG, 24 AWG, or 26 AWG. For mm
gauge wire, the available choices are:
AUTO, 0.32 mm, 0.40 mm, 0.50 mm,
0.60 mm, 0.65 mm, 0.80 mm,
0.90 mm, or 1.20 mm.
To set parameter values and start/stop the test:
1. Press
to display the list.
2. Use the up/down arrow key to highlight the desired value, and press
to accept the value.
3. Press to start/stop the test.