WAVEVSN BRD 4.4 National Semiconductor, WAVEVSN BRD 4.4 Datasheet - Page 16

• Manufacturer Part Number: WAVEVSN BRD 4.4
• Description: BOARD INTERFACE DIGITAL HI SPD
• Manufacturer: National Semiconductor
• Series: WaveVisionr

Specifications of WAVEVSN BRD 4.4

• Main Purpose: Interface, Data Capture
• Embedded: Yes, ASIC
• Primary Attributes: ADC & DAC Evaluation
• Secondary Attributes: Graphical User Interface, USB Interface
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Utilized Ic / Part: -

8.4 Viewing Data
Some definitions are in order:
A dataset is a set of samples.
A view is a way of looking at a dataset; time domain plot (“normal” waveform), frequency domain plot
(FFT), and histogram are all different ways of looking a sample dataset.
Each window in the WaveVision4 software can contain only one dataset. If you’d like to examine more
than one dataset simultaneously, you must open more than one WaveVision4 window. You can open
additional windows by choosing New Window from the File menu.
Each WaveVision4 window can contain multiple views of the same dataset. By default, a waveform, FFT,
and histogram view are shown for each dataset.
8.5 Running a DAC board
Refer to section 11 for the details of using a DAC board.
9 Using WaveVision4 Plots
The WaveVision4 software provides several tools to help you interact with plots. A toolbar appears above
each plot, similar to Figure 6.
Seen from left to right, the following tools are available:
Plot Actions menu: This menu contains commands that pertain to this particular plot. You may export
the plot data to a file, print the plot, save it as a graphic, or change the plot’s colors.
Plot Options: This button opens a dialog box with options that pertain to this particular plot. You may turn
off labels, annotations, or other elements in this dialog. The WaveVision4 software maintains default
options for new plots. You may edit the default options by choosing Default Plot Options from the
Settings menu. Each time new data is acquired, the default plot and FFT options are used. A change in
the default options results in a permanent change of these defaults.
FFT Options: The toolbar shown in Figure 6 is from an FFT plot, so contains a button to edit the options
for the current FFT calculations. Depending upon the type of plot, various options may be present on the
toolbar. Please consult the appropriate section below for more information about these options.
Magnifying glass tool: This tool allows you to zoom in and out to see fine details in the plot. Click and
drag a box from upper-left to lower-right to zoom in on a particular region of your plot. Click and drag a
box from lower-right to upper-left to zoom out. With the magnifying glass tool selected, click the right
mouse button to return to a normal, 100% view.
Arrow Tool: The arrow tool is used to select, move, and edit annotations. To edit an annotation, double
click it with the arrow tool. To delete an annotation, select it with the arrow tool and press the Delete key
on your keyboard.
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