different Sampling rates for different channels in Analog Input

[marooner]

Hi,

I would like to acquire data at different sampling rates on different channels say ACH 0, ACH 1 and so on. I have a PCI 6052E board and NI DAQ 6.9.2. Also is it possible to simultaneously perform Analog output on two different channels along with the Analog input? What will be the problems/consequences as far as the system resources are concerned. I am a beginner in this area and would greatly appreciate any help/pointers for my queries.

Thanking you in advance
Deepak

[Ben]

Search the eaxamples that ship with LV.

Theer is one called simultaneous input and output or something like that.

It will get you started.

re: multiple scan rates. This is acoomplished by sampling all channels at the highest rate and throw away the expttra samples you do not need.

Ben

[Gurdas]

Hi Deepak,

I faced the same problem recently and have found a few routes out. If you've solved yours do inform me how you did it.

As said by Ben you could decimate the samples. Another way around is to re-configure your board for each set of channels. This also works when for some channels you want waveform data while for others it is scaled/binary data.

Best,
Gurdas
gurdas@qagetech.com