Multiple sampling frequencies on one input device

I am using the latest Matlab version (2013b) and I am wondering if it is possible to create two daq sessions with different channels from the same device and use two different sampling frequencies so I can measure them at the same time?

For example I am using a NIDAQ USB-6009 acquisition system and I would like to do something like this using only the one device:

channels 0,1,2 are part of one session and have a sampling frequency of 1,000 Hz. channel 3 is part of another session and has a sampling frequency of 10,000 Hz.

Answer 1

[John Doe]

You can use the matlab function "downsample(signal, 10)" or "decimate(signal, 10)" on channels 0-2 which will convert the signal data from fs=10000 to fs=1000 as it's read in. I believe one function (decimate I think) smooths the result and reduces aliasing.

I do not believe the hardware can be altered to run on two different sampling freqs.