6
http://www.national.com
The WaveVision4 software is included with the
WV4 board and the latest version can be
downloaded for free from National's web site at
http://www.national.com/adc
. To install this
software, follow the procedure in the WaveVision4
Board User's Guide. Once the software is
installed, run it and set it up as follows:
1. Connect the WV4 board to the host computer
with a USB cable.
2. From the WaveVision main menu, go to
Settings, then Board Settings and do the
following:
Select the following from the WaveVision4
main menu:
•
WaveVision
4.0
(USB)
•
# of Samples: 2K to 32K, as desired
3. Apply power as specified in Section 4.5, click
on the
"Test"
button and await the firmware
to download.
4. Click on the
"Accept"
button.
5. After the steps outlined in Section 3.2 are
completed, click on ‘Acquire’ then ‘Samples’
from the Main Menu (you can also press the
F1
shortcut key). If a dialog box opens, select
‘Discard’ or press the
Escape
key to start
collecting new updated samples.
A plot of the selected number of samples will be
displayed. Make sure there is no clipping of data
samples. The samples may be further analyzed
by clicking on the magnifying glass icon, then
clicking and dragging across a specific area of the
plot for better data inspection. See the
WaveVision4 Board User's Guide for details.
To view an FFT of the data captured, click on the
‘FFT’ tab. This plot may be zoomed in on like the
data plot. A display of dynamic performance
parameters in the form of SINAD, SNR, THD,
SFDR and ENOB will be displayed at the top right
hand corner of the FFT plot.
Acquired data may be saved to a file. Plots may
also be exported as graphics. See the Data
Capture Board User's Guide for details.
