Power Consumption Tab - Analog Devices iMEMS ADXL372 User Manual

UG-1237
For example, if a user named a file XL372Test.txt in the pop-up
dialog box and saved it onto his or her desktop, then ten additional
.txt files are built automatically on the desktop and named as
XL372Test_1.txt, XL372Test_2.txt, ... XL372Test_10.txt.
A single .txt file can save up to 64,000 samples. For test runs
that generate more than 64,000 samples, each .txt file fills
sequentially with 64,000 samples per file until the test run
completes. Thus, in this example, the first .txt file, XL372Test.txt,
saves the first 64,000 samples. The next 64,000 samples gener-
ated by the test are saved to XL372Test_1.txt, and so forth until
the test completes.
For a large test where there are more than 64,000 samples to be
saved in the tenth .txt file, the tenth .txt file possesses unlimited
storage potential. Therefore, the data marked for storage in the
tenth .txt file is saved continuously, even when its size exceeds
64,000 samples. In this way, no data is lost and all data is organized
uniformly across all .txt files until the tenth .txt file.
For tests of the sensor that are of a short duration and the
samples do not fill all ten .txt files, the empty .txt files are
deleted automatically when the Stop Meas button is clicked. In
this way, the program saves only those files that contain data.
Each .txt file created contains a header with the date and time.
In addition, the acceleration data for the X-, Y-, and Z-axes, in
gravity, align in tab-delimited columns.
To examine the details of a shock waveform, click the Zoom In
button and use this function, as shown in the callout box in
Figure 13. After clicking the Zoom In link (outlined in the
callout in Figure 13), choose the area of interest. Alternatively,
analyze the waveform in Excel® or MATLAB based on the saved
.txt files.
Figure 13. Zoom In Function
To display the entire waveform again after zooming into a
particular section of the waveform, use the icon (circled in
Figure 14).
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EVAL-ADXL372Z-M
Figure 14. Display Whole Waveform Function

POWER CONSUMPTION TAB

When used properly, the
level power consumption. The innovative instant on and autosleep
functionality allow the device to sleep and wake up based on exter-
nally applied acceleration. Additionally,
noise operating mode at the expense of only a small increase in
current consumption.
The following functionality is available within the Power
Consumption tab:
• Mode of Operation configures the device for full band-
width measurement, instant on, wake-up, or autosleep
mode. Each of these options corresponds to different
device behaviors and different power consumption levels.
• Activity and Inactivity Configuration options are enabled
when autosleep mode and full bandwidth mode are
selected. In autosleep mode, the Activity Interrupt
Configuration options (shown in Figure 15) adjust the
settings that determine the level of activity and the length
of time required to wake the device from sleep mode. The
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User Guide
Figure 15. Power Consumption Tab
ADXL372 offers extremely low system
ADXL372 provides a lower