Attenuation – EXFO VDSL2 User Manual
Page 135
 
Wideband Tests
Copper, VDSL2, ADSL2+, and IP Triple-Play Test Set
127
Data Rate Prediction
Attenuation
The Attenuation tab displays the 
wideband attenuation test results 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/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.