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some problem about ad9361 tx channel

Question asked by madmax100 on Apr 16, 2018
Latest reply on Apr 26, 2018 by madmax100

We designed a signal processing board based on zynq and multiple AD9361s. Several of the 9361s can output normal single-frequency test signals, but the signal-to-noise ratio of several other 9361 output signals is very low. The output signal is a wide peak centered on the local oscillator signal. What is strange is that when the pin constraint on data_clk is removed, the output signal can become a pure single-frequency signal. The following figure is a photo with abnormal output