Hi there, I am testing external LO on N310 (UHD_3.13.0.2-1-g78745bda). The setup is I have a X310 sending SINE waves to N310's channel 1,2,3 via a splitter. A signal generator sends 2x frequency 3dBm signal to N310's LO IN 0/1 and LO IN 2/3 via a splitter. According to the doc, there is supposed to be a 180 degree phase shift which I did observe in following plot.
[image: image.png] But the question is why all 3 channels are now having very different amplitude. If I use internal LO, the amplitude of all 3 channels are the same. Thanks. Yun
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