RP value is expressed in hexadecimal notation. Its intensity represents the RSSI value of the last-received data: a brighter light means a higher RSSI value and better signal quality.Ĭonfigure the amount of time the RSSI pin is active, and therefore the amount of time the LED will remain lit, by modifying the RSSI PWM Timer (RP) setting: When this pin is configured as the RSSI pin, the LED lights every time the connected XBee module receives data. The XBee Grove Development Board includes an LED connected to the XBee module's pin 6. XBee module's pin 6 can be configured as an RSSI pin that outputs a PWM (pulse-width modulation) signal representing this value. Therefore, -50 dBm is better than -60 dBm. A greater negative value (in dBm) indicates a weaker signal. Likewise, if a transmitter is moved farther away, signal strength at the receiving antenna decreases. If a distant transmitter is moved closer to a receiver, the strength of the transmitted signal at the receiving antenna increases. Measuring the signal strength at the receiving antenna is one way to determine the quality of a communication link. It is an approximate value for signal strength received on an antenna. The Received Signal Strength Indicator (RSSI) measures the amount of power present in a radio signal.

Rssi signal strength ring