Generating a square waveform on zc706+fmcdaq2


I have built the no-OS project and now been trying to generate the square waveform of 20MHz. I have made the changes in the sine_lut table with the square wave values whereras, I end up with the noise output on the oscilloscope. As per this thread   there are few hardware filters on DAQ2. Can someone please tell me how do I find the specific filters to be disabled to generate the square waveform.

Or, is there any way without modifying the board,I can generate the square waveform.

Any help is highly appreciated.

Thank you & regards,

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