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Wb psd noise – EXFO AXS-200/610 Copper Test Module User Manual

Page 60

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Auto CQ/Video-DSL Rate Prediction

54

AXS-200/610

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.