change the sampling rate

[GerdW]

Hi Vishal,

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@vishal231 wrote:

NI 9222 : works with specified sampling rate

NI 9231 and 9244(acceleration and voltage 😞 gives different rates eg, if specifies set rate to 1k S/s it gives 1477 S/s.

I made a Task which had all the analog inpurts including NI 9216 :  if rate set to 1k it gives 1724 S/s

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Did you read all the datasheets?

NI9231 does NOT support a sample rate of 1kS/s. Read its datasheet!

NI9244 does NOT support a sample rate of 1kS/s. Read its datasheet!

NI9216 does NOT support a sample rate of 1kS/s. Read its datasheet!

As said before: put each module into its own DAQmx task and its own loop to read the channels. Respect the datasheet numbers when selecting appropriate sample rates!

[vishal231]

Hello,

Even,If I create different Task for each module , each module will work within its specified rates, it wont go above or below the max and min rates of their respective module.

At present when all module are connected for same read loop, Overall acquistion will be having the Minimum  rate which will be the highest Minimun of all the moudle available(in my case Minimum rate will be 1.613kS/s which is the Minimum rate for the NI 9244)

am I Right? 

My guess would be I cannot decrease the rate below 1.613kS/s , Right?

Regards

Vishal Kaushik 

[GerdW]

Hi Vishal,

you can always get smaller sample rates when you decimate the samples in post processing!

It might get easier when you find a sample rate supported by all modules. Look out for rates like 25kHz...