@akv103 wrote:
Hi RavensFan,
When initializing DAQ in LABVIEW I have to provide the sampling rate and the number of samples.
But in my case, I have to collect data without the sampling rate and the number of samples.
No you don't. Look in the Example Finder for Voltage- SW -Timed Input. You can use 1 sample on Demand also.
Why wouldn't you just set up a continuous acquisition with sample rate of 20 Hz? It's like you are asking how to drive a nail, but you don't want to use a hammer.