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PGA309EVM-USB: Issues loading correct and working Model file

Alistair Newcombe
Prodigy 60 points

Part Number: PGA309EVM-USB

I've been attempting to setup a model file for the calibration of my bridge-type pressure sensor. I need an excitation voltage of 5 V, two temperature measurements (at this point in time) 22 and 38 degrees Celsius, 4 wire output and an output voltage range of  5V to 0V (or 5.5V to 0.5V). When I attempt to create this model file and then load it using the "select model file emulator file" button it takes me through three different file directory screens:

  1. Choose or enter path of file
  2. Select Model file
  3. Choose file to read

What am I meant to be selecting for these options? When I select my created model file, the Auto-Cal screen is empty with none of the required information in it. This even happens when I just modify the temperature values of one the existing model files (4wire_4p096_diode for example). Am I required to create custom files for each of the file directory windows?

Any help will be greatly appreciated.

Cheers,

Alistair

  • 0
    TI__Mastermind 20020 points
    Hi Alistair,
    I'm not able to reproduce this in my copy of the PGA309EVM software. Clicking "Select Model File Emulator File" brings up a file browser starting in the Model_Files directory, and choosing a file here appears to load the configuration correctly. I do notice a few small differences between the screenshot you included and my own, so if you haven't already, double check that you're running the most recent version of the tool.