Texas Instruments ADS1254, Руководство пользователя

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Host PC Software
3-15 Operation
3.5.2.3 Histogram
In histogram mode, the data are analyzed to see how many times each value
occurs; this information is shown on a count-versus-value bar graph. For
example, if the column marked zero shows a bar which is 2 units high, it means
that two zeros are present in the data. Histograms are useful for analyzing
readings of dc voltages for accuracy.
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.
3.5.2.4 Data List
In data list mode, the data are shown in a list, in order of reception. The data
may be shown in one of four modes:
-
As integers: Each sample is displayed as a signed base-10 integer. The
sample values are shown exactly as received from the ADS1254.
-
As hexadecimal integers: Each sample is displayed as an unsigned
hexadecimal number. The hexadecimal values are precisely those codes
read out from the ADS1254.
-
As percentage of full scale: The percentage of full scale of each sample
is calculated and displayed.
-
Scaled by LSB: The voltage measured at each point is calculated and
displayed.
3.5.3 Setup Dialog
The setup dialog allows you to configure several aspects of the ADS1254EVM
software’s operation. It is shown when the program is started, and when the
EVM setup option is selected from the edit menu.
Once you are finished making changes in the setup dialog, click the OK button
to make them effective, or cancel to discard the changes. No changes you
make in the setup dialog take effect before you click the OK button.