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How to increase speed of operation of digital ouput DAQmx

Our aim is to make multiple RF signal for Acousto optic Deflector (AOD) using Direct Digital Synthesizer (DDS) and NI PCIe 6536 card through Labview (2014, service pack 1).

Signal goes following way: Labview --> PCIe 6536 --> DDS --> AOD

Here, I am facing problem with speed. I want to reduce generation time between two RF frequencies. I changed Sample Clock Rate and buffer size, but it is not helping. Please let me know whether my VI code is right or any suggestions.

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Hi,

 

Can you expand on what type of speed issues you are running into? Also, what is the current time between your two generated signals? What are the generated signals frequency?

Kevin S
Applications Engineer
National Instruments
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