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AD9361 Tx input data and RF output problem

Question asked by RobertYJ on May 21, 2017
Latest reply on Jun 1, 2017 by larsc
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As title I met some problem with the AD9361 Tx input data is different from the Tx RF output

Figure 1 is the input data to the AD9361, and figure 2 is zoom in of the data beginning,

figure 3 is the RF output from the AD9361, and figure 4 is zoom in of the RF output beginning,


I set the sample frequency as 20MHz, and bandwidth is also 20MHz, below is my path-clock

{1280000000 , 160000000 , 80000000 , 40000000 , 20000000 , 20000000},//uint32_t rx_path_clock_frequencies[6] *** adi,rx-path-clock-frequencies
{1280000000 , 160000000 , 80000000 , 40000000 , 20000000 , 20000000},//uint32_t tx_path_clock_frequencies[6] *** adi,tx-path-clock-frequencies


I don't know what happened with this situation, it is suppose to be the same between my input and output data.

If you need more information please tell me.

Please help me and thanks for your support.