Sampling Frequency

[SparkEE]

I am trying to measure two analog inputs(NI-PXI-4461) using daq assist on Labiew 7.1. I want to run the same code on both inputs and comparing them together on a graph. I am measuring 2 accelerometers and the most important parameters are measuring the g rms and phase difference. I keep getting an error code -1907 "The sampling frequency of the input waveform should be greater than 0 (dt greater than 0)." I have set the sampling freq to 2k. I am not sure what I am doing wrong. Any help will greatly be appreciated.

Thanks,

SparkEE

[Dennis_Knutson]

Have you placed a probe or indicator on the waveform array? Why are you even using the for loop instead of just the convert from dynamic data function to create the waveform array?

[SparkEE]

I placed an indicator on the waveform array but as soon as I hit run the error pops up.

As far as the For Loop, I was basing this VI off of another. I removed the For Loop but the same problem still persists

[SparkEE · Accepted solution]

The problem has been resolved. Thanks to AirFrantz, the solution is to keep the For Loop and wire the iteration terminal to the channel input on the converter.

I want to thank Dennis_Knutson for his input as well.

[jeenasir]

Hi Kight of NI,

Im sorry thatI have to reply on your post cause I dont know how to start a new message. I am really sorry.

But i would like to ask if you dont mind to answer it, how can I know if I insert 5khz freq signal from function gen into myRio and myrio gets the same freq signal?

Thank you.Sorry again.

[Dennis_Knutson]

Duplicate - http://forums.ni.com/t5/LabVIEW/Re-function-generator/m-p/3255043

http://forums.ni.com/t5/Getting-Started-on-the-NI/Posting-Basics-and-Tips/td-p/3164694