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ADS1231REF: Freezes anytime a button is pressed

jz1354
Prodigy 60 points

Part Number: ADS1231REF

Hello,

I have a ADS1231REF board that freezes anytime I use any buttons. If I am in scale mode and try to calibrate, the lcd freezes. If I am in analysis mode and I try to change the unit, it freezes as well. Once the display freezes, I cannot switch modes. I must power cycle the board to do anything. Any way I can fix this? I am using a brand new 9V battery for power. Thank you.

  • 0
    TI__Guru 51470 points

    Hello JZ,

    It is possible this is ESD related.  I would suggest working with the board at an ESD safe station to minimize any possible effects.

    There is also the possibility that something is damaged on the board.  When using the 9V battery, the power is routed through the external power connector, J2.  I suggest either using an external power source, or, you could short the negative connection of the battery directly to ground to ensure a solid connection.

    Please let me know if either of these suggestions help.

    Regards,
    Keith Nicholas
    Precision ADC Applications

  • 0 in reply to Keith Nicholas
    Prodigy 60 points

    Hello Keith,

    Thank you for reaching out. I will order an external power source for the kit and try that out.

  • 0 in reply to jz1354
    TI__Guru 51470 points

    Hi JZ,

    O.K.  That would be a good next step.  Please let me know if you continue to have problems with the board.

    Regards,
    Keith

  • 0 in reply to Keith Nicholas
    Prodigy 60 points

    Hello Keith,

    I purchased a 9v external power source and plugged it into the board. Unfortunately, the board still freezes. I will try shorting the negative connection of the battery directly to ground and report back my results.

  • 0 in reply to jz1354
    TI__Guru 51470 points

    Hi JZ,

    Please make sure SW9 is in the left position (JTAG Mode)  The USB position will power the board from the USB port, and will not work correctly.  The USB PROG MODE is only used to program the MSP430 on the board and not power the rest of the EVM.

    Regards,
    Keith

     

  • 0 in reply to Keith Nicholas
    Prodigy 60 points

    Hello Keith,

    I do have SW9 in the left position. Also, I shorted the negative connection of the battery to ground. The board is still freezing.

  • 0 in reply to jz1354
    TI__Guru 51470 points

    Hi JZ,

    Best guess is this is still ESD related.  I suggest using the EVM GUI over USB to validate operation in analysis mode.  In this case, you do not need to physically touch the board once everything is connected.

    The software will allow collection, analysis, and recording of data.

    Regards,
    Keith