9219 is slow reading RTDs

[Dave_F1]

When I read voltage, current, or themocouples in a NI 9219 module (in high speed mode with USB carrier 9162), it returns in less than 20 milliseconds. This is good for my application.

When I try to read RTDs, the module takes 500 milliseconds. I don't know what I am doing wrong. Attached is a test program that demonstrates this problem.

Any suggestions (well ... almost any suggestions 🙂 will be appreciated.    Thank you!

[Ben_J1]

Dave,

   This is curious. Perhaps there some overhead associated with setting up the measurement. Have you tried running the acquisition in a loop and seeing how the time response is then? Have you made any other progress on this issue?

Regards from Austin,

[Dave_F1]

Hi Ben,

Thanks for your response.

It looks like a problem with the RTD sensor caused the issue. I discoved this while running the test you suggested. Thank you very much!

Dave