Hello Dialog,
Relating to this topic, I'd like to know the accuracy of rssi value. You mentioned 0.474dBm/LSB in the last comment (cited below)
In the linear area (-90 - -20dBm), how much of linearity or accuracy I can assume? Namely I can assume the error is within +-0.474/2 or I need to count on another linearity error and maybe real value will be +- 1dBm or more?
Best Regards,
>你好yterasaki,
> The base value is -112.0 dBm, this is the indicated RSSI when the input signal is 0, no RF signal present. The RSSI value that is > read from the register indicates the number of RSSI steps above this -112 dBm. The step is about 0.474 dB/LSB. The range is > > FF = 255 steps and the max value is -112 + (255 * 0.474) = +8.8 dBm. The usable range though is from -90dBm to -20 dBm due > to the limitedlinear range.
Best Regards,
yukio
Hi yterasaki,
The team is working on it, we will provide an answer as soon as possible.
Thanks MT_dialog
Hi yterasaki,
The base value is -112.0 dBm, this is the indicated RSSI when the input signal is 0, no RF signal present. The RSSI value that is read from the register indicates the number of RSSI steps above this -112 dBm. The step is about 0.474 dB/LSB. The range is FF = 255 steps and the max value is -112 + (255 * 0.474) = +8.8 dBm. The usable range though is from -90dBm to -20 dBm due to the limited linear range.
Thanks MT_dialog
Dear Dialog staff,
Thank you very much for your comment. Your answer is very clear and pin pointed.
Best Regards,