EXFO VDSL2 - Manual (Page 64)

Auto CQ/Video-DSL Rate Prediction
56 AXS-200/635
Running Video-DSL Rate Prediction Tests and Viewing Results
WB PSD Noise
The WB PSD Noise pane displays the
RMS Noise value from the power
spectral density (PSD) noise tests in
text and graphical form. RMS noise
voltage measures the signal-to-noise
ratio of the circuit.
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.