ni6210 sample rate and sample per loop, task time

[306218055]

the sample rate set as 500Hz, sample per loop 500, cycle 100. I found the task was finished in 10 s instead of 100s.

what i dont understand is the time taken for this task. i suppose per loop takes 1s, 100 cycle should be 100s. furthermore, the input is 1kHz, however the counting is 0.

The VI scheme was attached.

[altenbach]

It probably would help to attach the VI instead of showing truncated pictures.

Lots of your code makes little sense (I am not a hardware guy, so I focus on the code logic only):

• What is the size of the DATA array?
• Why are you reshaping a 2D array (what size is it?) to another 2D array?
• Why do you wire N of the FOR loop when autoindexing?
• ...

[306218055]

Thanks "Altenbach",

The VI is attached. What I am trying to do is a counter application, input 1KHz or higher.

My questions is why the task time is not the "samples per loop" / "sample rate" * "number of cycles"