The Rx Quad tracking loops are disabled while we run the Tx quadrature calibration. The Tx quad cal test tones are within the bandwidth of the Rx analog/digital filters.
The Tx quadrature results are very good (IQ DC offset < -60dBc, I/Q phase imbalance < 0.1deg, I/Q amplitude imbalance < 0.1dB).
The problem is that during the Tx quadrature calibration, the Tx signal level is very strong because the Tx Quad Cal Atten (0x0AC) register is set to its default value (i.e. 0dB attenuation). I would like to know if I can set register 0x0AC to a value different than 0x00 and if so, what attenuation values are acceptable not to affect the Tx quadrature calibration performances.