I believe it's TRX-B and RX2-B , the LED lights should light up when the ports are active.

You would directly modify the xml. change gain_mod manual, and add gain_dB to rx site, and then modify tx gain to -65. Something like this:

```

	                        {rx true,
                                 tuning_freq_MHz 2450,
                                 bandwidth_3dB_MHz 0.24,
                                 sampling_rate_Msps 0.25,
                                 samples_are_complex true,
                                 gain_mode manual, gain_dB 0, 
                                 tolerance_tuning_freq_MHz 0.01,
                                 tolerance_sampling_rate_Msps 0.01,
                                 tolerance_gain_dB 1},
                                {rx false,
                                 tuning_freq_MHz 2450,
                                 bandwidth_3dB_MHz 0.24,
                                 sampling_rate_Msps 0.25,
                                 samples_are_complex true,
                                 gain_mode manual,gain_dB -65,
                                 tolerance_bandwidth_3dB_MHz 0,
                                 tolerance_tuning_freq_MHz 0.01,
                                 tolerance_sampling_rate_Msps 0.01,
				 tolerance_gain_dB 1}

```

On Tue, Oct 17, 2023 at 8:29 AM roland.johnson--- via discuss <discuss@lists.opencpi.org> wrote:

Hi Aaron,

Yes, the image from < fsk_dig_radio_ctrlr_fmcomms_2_3_txrx.bin > is very clear - it doesn’t look patchy at all, even when the coax cable is completely disconnected from the E310, so the TX and RX ports are completely exposed.
The cable is definitely meant to connect to TRX-A and RX2-A right? Just in case I’ve done something stupid.
Would one set the RX/TX gain as an argument that forms the < ocpirun -l 8 -d -v -t 60 -PbaudTracking=xilinx19_2_aarch32 fsk_modem_app.xml > command, or should the xml be modified directly?
Best,
Roland
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