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After AD9361 initial, I found that DC can not be cleaned up,how to calibration the residual DC

Question asked by 47095598@qq.com on Mar 8, 2018
Latest reply on Mar 12, 2018 by sripad

Hello!

After the correction of BB DCOFFSET and RF DC Offset be done in the initialization process of AD9361.I found that DC can not be cleaned up, and how to complete the residual DC correction .

I made a test to see the DC correction after initialization: using the signal generator to generate the 0.96MHz tone signal, configuring AD9361 as the MGC mode, closing the RF DC offset calibration track, and then grabbing the sample data of ADC, I find that there is always a residual current on I or Q.

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