EXFO VDSL2 - Manual (Page 129)

Wideband Tests
Copper, VDSL2, ADSL2+, and IP Triple-Play Test Set 121
Longitudinal Balance
Longitudinal Balance
The Long. Balance tab allows you to
view results of the wideband
longitudinal balance test in graphical
form.
The buttons on the tab are described
below:
³
(Zoom function List) allows you to
select the desired zoom function:
Horizontal Zoom or Vertical
Zoom. The selected function is displayed in the box.
³
Zoom In allows you to increase the level of zoom for the selected
zoom function.
³
Zoom Out allows you to reduce the level of zoom for the selected
zoom function.
To zoom in/out:
1. Press
to display a list of zoom functions.
2. Press the up/down arrow key to highlight the desired zoom function.
3. Press to select the zoom function.
4. Use the left/right arrow key to highlight the Zoom In or Zoom Out
button as required, then press .
5. The graphical display zooms in or out accordingly. Press
repeatedly to continue zooming.
To move the screen pointer:
Press the left/right arrow key to move the screen pointer. The pointer value
updates dynamically.