Hi, guys, I am reading the codes for uhd_cal_rx_iq_balance.cpp. When doing calibration by setting the RX and TX antenna as "CAL", is the signal from TX directly switched to RX? And I noticed that in the function set_optimum_defaults(), the tx_gain is 0 but the rx_gain is 25! Is that too high? I heard that when directly connecting TX and RX, we should use attenuators. So why does it set 25 rx_gain? Thanks.
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