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Reconstruction of IF siganal using NI-5640R

Hi,

I am trying to reconstruct the recorded Baseband IQ Signal in the QAM mode or in the Interpolation mode at 70MHz using NI-5640R.

Details of the recorded file is as follows

Samplerate : 3.125MSPS(3.125MSPS of I and 3.125MSPS of Q)

bits per sample : 16bits for each I and Q

Allignment of data: Alternative I and Q

 

I have tried in the QAM mode. The code is attached. I am able to generate the signal with some gaps. But I need to generate the signal continously. I need to get the data from file and I need to generate the signal continously with out interuption till the end of file.I am using LabVIEW 8.2 and the version 1.2 drivers.

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