Analog Devices EVAL-ADA4570SDZ User Manual page 10

User Guide
EVALUATION BOARD SOFTWARE
VSIN and VCOS Raw Outputs
The Captured Data graph shows measurement result in volts of
the selected outputs from the
Figure 18).
Figure 18. Captured Data Graph
The red and blue waveforms in
signals of the selected VSIN channel and VCOS channel outputs
as the magnet rotates over the ADA4570. The VSIN and VCOS
differential signals output data is used to calculate the angle and
radius.
In the application, it is important that these two channels are
simultaneously sampled to avoid the introduction of errors resulting
in a phase delay between the sampling of the individual channels.
GUI Settings and Capture Modes
The GUI allows the user to change some settings that are accessed
via the system icon, Configure (see
Figure 19. Configure Icon
When the Configure icon is activated, the GUI opens a window
that allows the user to modify the captured data display settings,
data accusation and update rate settings, and the method the data
is captured. Figure 20 shows the GUI default settings.
analog.com
ADA4570 magnetic angle sensor (see
Figure 18 indicate the differential
Figure 19).
Figure 20. Configure Window
The GUI provides two capture modes, Continuous and Burst.
When the EVAL-ADA4570SDZ operates in continuous capture
mode, the GUI constantly samples the VSIN channel and VCOS
channel. The number of samples displayed is set with the Chart
Length field and, by default, is set to 500 samples. The GUI
allows the user to set delays between sample reads via the Time
Between Bursts (s) field. The default delay is set to 10 ms.
After every sample read by the GUI, the Captured Data graph, the
angle, the radius, and the temperature values are updated.
When the EVAL-ADA4570SDZ operates in burst read mode, the
GUI samples a burst of samples, defined in the Samples to
Capture field, without updating the display. After the burst read has
finished, the GUI updates the display values with the collected data.
By default, the sampling frequency is set to 100,000 SPS.
EVAL-ADA4570
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