Dear Nordic Specialist,
I would like to ask about the correct usage of the power recommendation parameter in the channel sounding configuration.
In bt_le_cs_set_procedure_parameters_param, the description of tx_power_delta appears to indicate the transmit power difference between the two devices. If the initiator’s TX power is 8 dBm and I would like the reflector to transmit at 6/4/0 dBm, should I adjust this parameter accordingly? For example, does setting tx_power_delta = 4 configure the reflector’s transmit power to 4 dBm?
This is how I am currently configuring it, but I am not entirely sure whether the reflector is actually transmitting at the power level implied by my tx_power_delta setting. Is there a recommended method to verify this?
My setup uses two 54L15 DK boards placed approximately 50 cm apart, without external antennas. I am observing that the local and remote measurement magnitudes are not significantly different. I tested tx_power_delta values of 4 dBm and 0 dBm, and compared them with the initiator’s 8 dBm. I did not see a substantial change in the measured magnitudes. Intuitively, an 8 dBm transmitter should have about six times the power of a 0 dBm transmitter.
Thank you very much for your guidance and support.
Best regards,
Cheng
