Diadem sampling rate

[Lorenzo!]

Hello!

We are using Diadem Version 11.0 and the hardware cDAQ with the voltage measurement hardware NI9229/9239.

I am trying to sample the voltage by at least 4khz, but I always get an error message that says that this rate isn't supplied by the hardware (the handbook says different things). I also changed in the options from windows timing to software timing or automatic timing, and also from hardware to software timing. Didn't work out. How can I maybe change the resolution to get a higher sampling rate?

Please help me , thank you very much in advance

[sendia]

Hi Lorenzo!

The problem is the NI 9229/9239 cannot sample at 4KS/s. If you check the NI 9229/9239 data sheet , it is said in the fist page you must use a sampling rate (Fs)= (50KS/s) / n; where n=1, 2, 3... 31; so it is not posible to sample at 4KS/s.

You can use sample rate (Fs)= 4,166 KS/s (using n=12); or you can use sample rate (Fs)= 3,846 KS/s (using n=13) but not Fs=4kS/s