Hi All, I have a problem in using X310 USRP after upgrading UHD from 3.10 to 4.1.0. I am using it to capture NR5G radio signal in UL. After analyzing the captured signal, the quality in the last subframe is worse than the earlier subframes.EVM =[1.014, 1.08, 1.055, 1.053, 0.954, 1.043, 1.145, 1.112, 1.162, 1.072, 1.131, 1.125, 1.038, 1.08, 1.003, 1.1, 0.972, 0.941, 1.046, 0.917, 1.01, 1.023, 1.025, 0.982, 1.101, 1.044, 1.089, 0.987, 0.923, 1.022, 1.012, 1.009, 1.021, 1.037, 0.998, 1.112, 1.112, 0.981, 0.987, 2.785]
When using UHD 3.10, I had no such problem. If I deliberately capture one more subframe with UHD 4.1.0 but ignore it when analyzing the signals, I will have good EVM. Is this a bug in FPGA for UHD4.1.0 in X310? Thanks for any input. Hongwei
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