real time control of Analog Outputs of PCI-6251

[mhs100]

Hi all,

I posted this message on labwindows board but got no replies, i guess this is due to the mismatch of the topic with the board. Since question is relating to the PCI-6251 Daq, therefore i am posting it in in the multifunction Daq board.

I am using NI PCI-6251 multifunction Daq card on Labwindows. The attached program generates two waveforms from analog output channels 0 and 1. First i have to configure the desired amplitude, frequency and Rate on the panel and then press the start button. After pressing the start button if i attempt to change the amplitude or frequency, it doesn't change. I want to control the amplitude , frequency and rate in real time. Please edit the attached program in such a way that every control on the panel has a real time effect after the start button is pressed.

Any help will be greatly appreciated.

[Sean_F]

Hi mhs,

I searched ni.com for CVI examples of dynamic analog generation and found what you're looking for. Here's the link. Hope this helps!

[mhs100]

Hi Sean F

 Thanks for the reply. Will this example also run on the M - series PCI-6251 Daq card?

Regards,

mhs100

[Dennis_Knutson]

No. You must use DAQmx for an M series.

[mhs100]

So, is there any example of dynamic analog generation on m-series using CVI?

[Sean_F]

Hi Mhs,

Unfortunately, I couldn't find a more recent example that uses the DAQmx driver. You should be able to start with the traditional DAQ example I sent you and replace the TDAQ function calls with the appropriate DAQmx calls.

Best of luck,