Multi Channel Data Acquisition using PXI-6143

[SHOTA]

Hi all

I can acquire one channel data and am trying multi channel data acquisition using PXI-6143.

And I made attached code.

But in this code, the signal in ch1 is acquired and in ch2 is not acquired. Why?

FrontPanel.pdf is the front panel of this code during operating.

AI1 and AI2 are input same signal 1Hz sine function.

I'm grad if you teach me the solution.

[Dennis_Knutson]

You don't mention it but you are certainly getting a resource reserved error. Search the forum for the message or code or simply fix it by using a single task with multiple channels.

[SHOTA]

 Thank you for your comment.

What is reserved error?

That means errors are not indicated but occured?

[Dennis_Knutson]

No. You are getting an error and it will be indicated when the loop stops and your error handler is called.

[SHOTA]

I improved the code as attached file by referencing this and it came no errors.

[Dennis_Knutson]

You did not attach anything.

[SHOTA]

　The file is attached on my original post!

[Dennis_Knutson]

That code is wrong! You simply cannot have two separate tasks. Change it. The only correct method is to specify both channels such as dev1/ai0:1. You should NOT expect an error message to pop up when the loop is running.

[SHOTA]

Thank you for your comment.

When the code was run without a function generator, no error was occured.

But when the code was run with a function generator, an error was occured.

Thank you and I will try to resolve this problem!