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PGA300EVM-034: ADC Graph

Dennis Riester
Prodigy 20 points

Part Number: PGA300EVM-034

Hello, 

I'm using the PGA Eval-Board with a strain gauge. And I observed strange behavior. 

If I'm using the read ADC function, everything looks alright. The gain seems to work! 

But if I'm doing the same thing on the ADC graph, the gain doesn't affect the voltage? 

What am I missing? 

Best regards, Dennis

  • 0
    TI__Mastermind 31655 points

    Hi Dennis,

    I am seeing the same thing. It does look like there is something that is incorrectly updating the Y-axis for the voltage measurement on the ADC graph page. At the moment there is no workaround for this display bug. If you use the code display instead, this does update correctly as you change the gain, and as you have noted, the voltage display in the ADC settings tab is correct. I would recommend using the code display instead, to more accurately see the variations in the ADC input.


    Regards,

    Scott