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4.8.4Temperature Error Compensation Functions
Figure 23 shows the Temperature Error Compensation sub-tab.
Figure 23. PGA309EVM-USB Software: Auto Calibrate Tab—Temperature Error Compensation
The Temperature Error Compensation sub-tab is divided into six separate measurements (refer to Figure 23). When using the sensor emulator option, you can complete the calibration by pressing the Read button six times. Each time the Read button is pressed, the sensor emulator adjusts the temperature signal and the bridge signal automatically to correspond to the temperature and load required. For real-world sensors, however, the EVM must be physically placed in an environmental chamber; the user must then adjust the temperature and applied load as required by the table. When all six measurements are completed, press the Calculate and download LUT button to update the EEPROM look-up table (LUT). After pressing the Calculate and download LUT button, the module is calibrated, and should output the desired voltage according to the specified load and temperature.
SBOU084 –February 2010 | PGA309EVM-USB | 33 |
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