Power gain and sensitivity
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When configuring a node and a network, there is an important parameter related to power gain and sensitivity.
Power level (dBm) at which the RF module transmits conducted power. The possible values are:
Parameter
XBee-PRO
0
10 dBm
1
12 dBm
2
14 dB
3
16 dBm
4
18 dBm
Figure: Power output level
Graphics about transmission power are exposed next:
Example of use:
Related variables:
It reports the Received Signal Strength of the last received RF data packet. It only indicates the signal strength of the last hop, so it does not provide an accurate quality measurement of a multihop link.
Example of use:
Related variables:
The returned command value is measured in -dBm. For example if xbeeDM.valueRSSI
=0x60, then the RSSI of the last packet received was -96dBm. The ideal working mode is getting maximum coverage with the minimum power level. Thereby, a compromise between power level and coverage appears. Each application scenario will need some tests to find the best combination of both parameters.
Power level configuration example:
Get RSSI example: