• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 30 subscribers
  • Views 382 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

OPT3001EVM: Data Logging Rate

Stefano Noto
Prodigy 20 points
Part Number: OPT3001EVM

I saw in another Post that the OPT3001EVM GUI does not support multiple EVMs on a single PC.

Thus, I am using two laptops to log data from two of these units in an effort to get differential data.

The problem is that one PC logs at around 10/sec and the other logs at around 15/sec.

This makes it difficult to sync the two data logs and perform the necessary math.

I have tried adjusting all the settings I can find and I still have this issue.

Any assistance would be greatly appreciated.

  • 0
    TI__Mastermind 25895 points
    Hi Stefano,

    Looks like the link to the other post is not working. I am not sure if you can have two USB-DIG boards and two labview instances running. We have the labview source code for the GUI online, however, and if you can set the COM port for each USB-DIG board I think you may be able to make that work on one PC.

    If that doesn't work another option is to change the address on one of the EVMs and then run both off of the same USB-DIG board by using jumper wires to connect both EVMs on the same I2C bus. To log this you will again need to modify the labview code to log two different addresses rather than one.

    Best,

    Alex
  • 0 in reply to Alex Bhandari-Young
    Prodigy 20 points

    Alex,

    Thank you for the reply.

    I have two laptops set up, each running one unit.

    When I bring the logs into Excel to sync them up, it becomes difficult because one logs at 10 entries/sec and the other logs at 15 entries/sec.

    I thought the log rate would follow the reporting rate (every 100ms or every 800ms), but I'm not sure what governs the log reporting rate as I cannot find any option in the software.

    Any thoughts? I made sure that both units were set up identically.

    Stefano