Host PC Software
3-14
3.5.2
Display Modes
The evaluation software offers four ways to display sample data:
-
Scope displays the data as a sample number versus amplitude graph,
similar to an oscilloscope
-
FFT displays a fast Fourier transform of the data on a frequency versus
magnitude graph
-
Histogram displays the data on a value versus count graph (histogram)
-
Data list displays the raw sample data in a list
Modes are selected by clicking a tab on the tab bar above the data display
area, or by selecting an option from the View menu.
The modes are fully described in the following sections.
3.5.2.1
Scope
In scope mode, collected data are displayed as a function of sample number,
with the vertical axis measured by code.
You can zoom in on the graph by selecting a rectangular area with the mouse,
by clicking and dragging. To zoom out, left-click on the graph and select undo
zoom from the popup menu that appears; the graph will return to its original
scale.
Left-clicking on the graph brings up a pop−up menu containing numerous
display options. Double-clicking with the right mouse button brings up an
options dialog containing other display options. You can export the graph in
various file formats by selecting export dialog from the popup menu.
3.5.2.2
FFT
In FFT mode, a fast discrete Fourier transform is applied to the dataset, and
displayed as a graph of frequency in hertz versus magnitude in dB of full scale.
A number of options for changing certain parameters of the FFT, such as
window type and normalization type, are available by clicking the options tab.
You can zoom in on the graph by selecting a rectangular area with the mouse,
by clicking and dragging. To zoom out, left-click on the graph and select undo
zoom from the popup menu that appears; the graph returns to its original scale.
Left-clicking on the graph brings up a popup menu containing numerous
display options. Double-clicking with the right mouse button brings up an
options dialog containing other display options. You can export the graph in
various file formats by selecting export dialog from the popup menu.
Summary of Contents for ADS1254
Page 1: ... May 2002 Data Acquisition Products User s Guide SLAU083 ...
Page 34: ...3 18 ...
Page 36: ...Board Layouts 4 2 4 1 Board Layouts Figure 4 1 Board Layout Top Layer ...
Page 37: ...Board Layouts 4 3 Physical Description Figure 4 2 Board Layout Bottom Layer ...
Page 38: ...Schematics 4 4 4 2 Schematics The ADS1254 schematics are shown on the following pages ...
