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ADS1232REF: Data acquisition through laptop resetting the board.

James Henry
Prodigy 10 points
Part Number: ADS1232REF
Other Parts Discussed in Thread: TUSB3410

I have run this board from a desktop over long time periods and captured enough data to fill up excel. I use the slow sample rate which after filling excel give data for approximately 29-30 hours.

The next test I tried to run is with my scale in an environmental chamber, but with the Dev board OUTSIDE of the chamber so in a normal office type environment. However, this time I am trying to use a laptop to record my data. I used a Dell M7520 and had the power settings to never go into sleep, and I also have the selective USB power disabled. 

For some reason the longest run time I can seem to acquire/record data for has been about 800 seconds according to the TI ADS 1x3xREF user interface. Is there something missing on this laptop USB vs desktop USB that I am failing to understand? 

Just to note that I followed the same procedures when installing the TI software on both the desktop and laptop including installing the usb driver (forget the name of the driver off the top of my head). Not sure what USB my desktop uses, but the laptop is USB 3.0 if that matters.

Any ideas?

Thank you,

Confused Mech.E

  • 0
    TI__Guru** 113765 points

    Hi James,

    Welcome to the E2E forum!  Unfortunately the ADS1232REF was not designed for long term measurement or drift analysis.  The ADS1232REF was a reference design to show scale operation and functionality.  That said, there is no reason why the communication and data collection should not be able to continue for long periods of time.  The data is transmitted as ASCII text using a virtual COM port to the PC.

    A few things to consider as possible issues:

    • Make sure the latest drivers are being used (http://www.ti.com/lit/zip/sllc428) for the TUSB3410.
    • The length and grade of cable may be important.  I've had trouble using cheap cables or cables not designed for high-speed.
    • There could be some kind of timing issue with the USB port.
    • Static discharge can break the connection.
    • You should only be using the USB virtual COM port with the MODE (red) switch in the ANALYSIS position.  The firmware was not designed to communicate the scale parameters in SCALE mode through the USB.

    I also have a Dell laptop with USB 3.0 ports and Win10.  I initially had not tried storing any data to a file, but I had it operating for about 3/4 hour with no issues.  I then started to collect data to a file and saw no issues (I had collected for over 2680 seconds).

    Best regards,

    Bob B