EXFO VDSL2 - Manual (Page 151)

Wideband Tests
Copper, VDSL2, ADSL2+ and IP Triple-Play Test Set 143
Data Rate Prediction
Signal-to-Noise Ratio
The SNR tab displays the
signal-to-noise ratio per tone in
graphical form.
The list and 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 or out:
1. Press
to display a list of zoom functions.
2. Press the up/down arrow keys to highlight the desired zoom function.
3. Press to select the zoom function.
4. Use the left/right arrow keys to highlight the Zoom In or Zoom Out
button as required, then press .
The graphical display zooms in or out accordingly.
5. Press repeatedly to continue zooming.
To move the screen pointer:
Press the left/right arrow keys to move the screen pointer. The pointer
value updates dynamically.