Provide simple example for Arbitrary data sending through NI4551(DSA)

Question

We Converted NI-DSA function palette
in LabVIEW under Application
Examples>>Advanced>>Arbitrary Output Example.
But, We not exactly getting arbitrary wave. Our arbitrary data is correct. I think there is a problem with FFT settings. So Please Provide simple example for Arbitrary data sending through NI4551(DSA)

Answer 1

Hello Sateesh!
First, what versions of LabVIEW and NI-DSA are you using.  I have been searching around for the example you are refering too and I am not able to find it.  Are you creating and arb. wave in the frequency domain and then performing an FFT to get it to the time domain?  Next, remember your wave will only be as exact as the AO specs. of the hardware...
The output conversions occur simultaneously at software-programmable rates from 1.25 to 51.2 kS/s in increments of 47.684 µS/s. The analog output circuitry uses eight-times oversampling interpolators with 64-times oversampling delta-sigma modulators to generate high-quality signals. Software-programmable attenuation of 0, -20, or -40 dB is available on the output channels. The PCI-4451 has excellent amplitude flatness of ±0.2 dB within DC to 23 kHz, and a THD of -90 dB at 1 kHz.
Now, as far as obtaining other examples If you use the LabVIEW example finder and goto Hardware Input and Output>>Traditional DAQ>>Analog Output.  I would also in the lower right hand corner of the Example Finder select your 4451 this will show you all examples that work with your hardware.  I hope this helps a little but please give me more details we will go from there.   Have a great day!
Allan S.
National Instruments