Trouble with cDAQ + NI-9263 + C# multiple channels

[EnJoneer]

Hello,

I am having trouble generating a waveform for AO0 (sine wave) and AO1 (cosine wave) respectively. 

I can generate any waveform on a single channel, but generating waveforms to multiple channels eludes me.

Code:

I tried using AnalogMultiChannelWriter but I couldn't get the multidimensional double[,] set up correctly..

Anyone have advice for how to proceed? Is there an NI example? I couldn't find one in my local ...\National Instruments\NI-DAQ\Examples folder.

Thanks in advance,

Jon

[santo_13]

You need to put both channels in the same task and use the N-Channel writer instead of a single channel.

[EnJoneer]

I'm not finding the "N-Channel writer"... 

I tried using "NationalIstruments.DAQmx.AnalogMultiChannelWriter" but this proved not to be so intuitive.

Which class are you referring to?

[santo_13]

Yeah, that one, NationalInstruments.DAQmx.AnalogMultiChannelWriter

I am not so familiar with C# but know from LabVIEW APIs for DAQmx.

[EnJoneer]

Does anyone have an example of how to set up the multidimensional waveform for the 'AnalogMultiChannelWriter' class method 'WriteMultiSample'?

[EnJoneer · Accepted solution]

I figured it out. My multidimensional array was being populated in the wrong order. 

This works:

[Derrick--Jose]

Can cRIO 9039 + 9263 work with measurement studio? It seems like my computer cannnot connect the cRIO successfully?    When I am running the examples, it always got stuck?   Could someone help me?