AnsweredAssumed Answered

The RX gain part of AD9371 is normal and partial

Question asked by LIUDENG on Nov 17, 2017
Latest reply on Nov 23, 2017 by Vinod


    AD9371 configuration RX channel gain, MGC mode, configuration 195~210 is correct, but there is a problem in the upward configuration, the spectrum is completely wrong.Currently, there are only one good point for the 10 boards, and the other nine are basically a phenomenon.That piece is good between 210 and 255, but there are a few values that don't work.

This is normal, with data at 210;

This is when you configure 211, one is still normal, the other two are abnormal.

This is the configuration of 220, all three exceptions.The anomalies are not the same.

    When normal, it is normal to change the size of input signal, and the amplitude is normal.So it's not a problem of saturation overflow.I just changed the RX gain configuration, just a number, 0.5dB change.Please reply as soon as possible. Thank you.


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