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LO Frequency Sweep in ADI's FMCOMMS4 Board with Zed Board Interface

Question asked by fq89 on Oct 18, 2017
Latest reply on Jan 3, 2018 by travisfcollins
I have been working with ADI's FMCOMMS-4 board (with AD9364 Transceiver) and Zed Board Interface to operate it as a Stepped-Frequency Continuous Wave Radar. So far I have been using the MATLAB/Simulink examples that come with the Communications System Toolbox Support Package for Xilinx Zynq-Based Radio. I was able to modify their provided examples to have it function as a stepped frequency radar, but the problem is that the frequency steps are too slow!
 
Looking into different message threads in AD's support community, I saw that the frequency stepping can be done within around 250us (worst case), where I was achieving a frequency stepping in about 10-15ms! My questions are:
 
Do you think it is a problem with the MATLAB interface? If yes, can you please suggest me a way to achieve faster frequency stepping? What are the other options to interface with the board from a Windows machine? 

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