Set the transmit power on NRF51822

[Rashmi]

Hi

We are using BL600-SA in our project. I need to configure NRF51822 transmit power so that it is discoverable at particular distance.

I am using softdevice S110 and I tried to set the Tx power using sd_ble_gap_tx_power_set() function, but I did not finding any difference 

in the RSSI value. The API is returning NRF_SUCCESS. I have also tested with softdevice S130, but that is also not working us.

Can anyone please suggest me the way to configure the transmit power level?

Regards,

Rashmi

[Simonr]

Hi Rashmi

Okay, then it might be that the signal strength won't get any higher than it already is at the close range. How much is the RSSI value at any of the TX power levels? You can try moving the peripheral further and further away from the central, as you should see the RSSI drop faster (at a lower range) at a lower TX power. 

Best regards,

Simon

[Rashmi]

Hi Simonr,

We are getting the RSSI value of -95dBm at any of the Tx power levels. If we place central and peripheral very closer i.e less than 2cm, we are able to get the RSSI value of -76dBm.

Thanks,

Rashmi