topic reading multi data at the same time in LabVIEW

reading multi data at the same time

NeeHeng — Fri, 02 Sep 2022 13:50:29 GMT

I am beginner in Labview, I trying to read two input analog voltage from NI USB6001. but unfortunately, I trying use "while loop" or without "while loop" I still unable to read both data at the same time. only one input data able to read only. hope can get some help /guide how to do solve this ..

Re: reading multi data at the same time

altenbach — Fri, 02 Sep 2022 14:14:30 GMT

Create a task that contains both inputs.
Define the loop timing if doing software timed acquisition.

(Sorry, I don't have access to LabVIEW 2021 at this moment, so I cannot look at your VI in detail)

Re: reading multi data at the same time

GerdW — Fri, 02 Sep 2022 14:37:17 GMT

Hi Nee,

try this:

It incorporates both suggestions by Altenbach…

Re: reading multi data at the same time

altenbach — Fri, 02 Sep 2022 14:48:20 GMT

Also be aware that "at the same time" is a bit vague. You don't have simultaneous sampling hardware (details), so there will be a microscopic time difference between channels. Probably completely irrelevant for what you are trying to do. 😄