[SPSGRFC] Help configuration

[mbertoni]

Hi to all.

I'm working on telemetry board:

• P2P, client connects to a server (microcontroller) just for request, then server starts to send every second data to client (up to 10'000 Bytes), so I need to work at least at 115200 bit/s (actually I'm using serial interface, there shouldn't be troubles using SPI).
• distance up to 4 km (typical is 3 km), 868 kHz

On SPSGRFC datasheet it's reported up to 500 kbit/s on-air bitrate, sensitivity -118dB and maximum output power 11.6dB, so it should be okay for my purposes (at least up to 3km).

I don't understand if sensitivity is related to a specific bitrate, or is it related to the maximum bitrate avaliable...

Thanks.

[Winfred LU]

Hi mbertoni,

The sensitivity will be different with different radio settings including data rate.

Please refer to S2-LP datasheet for more details about sensitivity for different data rates.

DS11896, table 23

https://www.st.com/resource/en/datasheet/s2-lp.pdf

Best Regards,

Winfred