Inductive Sensing GUI User’s Guide
3.10 Data Streaming
Data is streamed from the EVM to the GUI when streaming is started. The sampling rate of the EVM and
the number of samples to plot can be configured. The sampling rate is the rate at which the
microcontroller on the EVM retrieves a measurement from the LDC131x/161x.
Figure 15. Streaming Configuration
The sampling rate can only be set when streaming is stopped. The limit on the sampling rate is 1000
times per second (1ms). For data logging, it is 100 times per second (10ms).
3.10.1
Average, Point, Min, Max Values
Average is the default display type. To toggle between sample point, min, and max values, right-click on
the plot region of the GUI. The various display modes are:
Table 2. Modes Description
NAME of the MODE
FUNCTION of the MODE
Average Mode
The average of all the data points currently in the plot
Point Mode
The newest data point value currently in the plot
Min Mode
The minimum data point value currently in the plot
Max Mode
The maximum data point value currently in the plot
Standard Dev
The standard deviation of the data currently in the plot
A larger number of samples results in a larger averaging window.
3.10.2
Zooming and Scaling
Plots are interactive. Zooming options are available by right-clicking the plot and selecting an option from
the context menu.
Table 3. Zooming and Scaling Options
NAME of the TYPE
FUNCTION of the TYPE
Toggle Data Type
Displays inductance thresholds
Zoom to...
Zooms to window
Autoscale
Autoscales the data in the plot
Save Plot Data…
Allows to save the streaming data to a file
Reset
Resets the Zoom window to its default setting
Clear Data
Clears the data and resets streaming
Help
Clears the data and resets streaming
13
SNOU133 – December 2014
LDC131x and LDC161x EVM User’s Guide
Copyright © 2014, Texas Instruments Incorporated
