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How to use the FIR filter after generating coefficient in the Matlab?

Question asked by ADI_Wei on Jul 30, 2014
Latest reply on Jul 30, 2014 by dpu

Connect the Zedboard+S2 to spectrum analyzer to test the AD9361 Tx. The IIO scope is set as below picture.

And the test result is shown as below picture. But no matter what FIR filter was selected, the shape of the output frequency spectrum has no change. I have checked the Transmit Chain Enable FIR filter.

In fact, I want to generate the FIR filter coefficients in Matlab and then test. But it seems the filter has no influence on the Tx. Could
you please show us how to use the FIR filter after generating coefficient in the Matlab?

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