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Direct Register Access Page
3. The L variation is used to compensate for target interaction with the sensor. If the target movement
causes a maximum shift in inductance of 20%, then enter (1-20%), or 0.8 into the Lvariation field.
4. Adjust the RPvariation – this factor is used to compensate for eddy current losses. This factor is
generally quite small and should be 1.02 or less, as the majority of the R
due to the sensor frequency shifts.
Once a setup is configured, if an LDC1101EVM is connected, press the Update Registers button to write
the appropriate values to the LDC1101 registers.
Figure 3-20. Apps Calculator to Configure R
3.14 Direct Register Access Page
If desired, the LDC1101 registers can be viewed and directly modified on the Register Map page of the
GUI. The register names, addresses, and current values are displayed in a table format in the middle of
the window, and the Write register or Read Register allow for direct manipulation of the registers. Care
should be taken to ensure that any write commands are correct and are not writing any incorrect values
into the reserved fields.
To set a register, first select the desired register, and then fill in the desired hex value into the Write Data
field. Once the data is entered, press the "Write Register" button to update the selected register.
The current configuration can be saved by pressing the "Save Config" button to store the configuration,
and the "Load Config" button will restore a previously saved configuration. The files can be read by an
ASCII file editor.
26
LDC1101EVM PC Software (GUI)
Copyright © 2015, Texas Instruments Incorporated
shift with target position is
P
Measurements
P
SNOU137 – May 2015
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