Hi, I have an X440 loaded with the X4_200 FPGA image running UHD 4.6. Using the RFNoC API, I am streaming the same 1 MHz tone into two channels at the same time (timed command) using a TX streamer going through the DUC (upsampling from 10.24MSPS to 245.76MSPS) through the same Radio block (same daughtercard) going out two TX ports connected to a scope.
While the two channels appear to be phase coherent - that is, their phase offset from each other doesn’t drift over time - they are not phase aligned. Furthermore, the phase misalignment changes every time I rerun the script I am using to run this test. Is this expected behavior on the X440?
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