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AD9371 Calibration and Eval Boards

Question asked by sckemplin on Sep 7, 2016
Latest reply on Sep 8, 2016 by Vinod

I have a question about calibrating the AD9371.

 

In the section in UG-992 titled "TX QEC Calibration" (figure 42, page 92) and again in the section titled "TX LOL Calibration" (figure 43, page 93) both diagrams show a feedback path from the TX output to the ORX input via "coupler" and "attenuator", owever I see no such components on either of the AD9371 eval boards. How is this possible? Are these tow calibrations unnecessary, or is there something I'm missing? 

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