Power Gain and Sensitivity
When configuring a node and a network, one important parameter is related with power gain and sensitivity.
The
setPowerLevel() function permits to set the power level at which the device transmits conducted power. The parameter range: from 0 to 4. Default value is 4.Setting | Power Level (boost mode disabled) |
0 | 5 dBm 1 |
1 | -1 dBm |
2 | +1 dBm |
3 | +3 dBm |
4 | +5 dBm |
The boost mode improves the receive sensitivity by 2 dB and increase the transmit power by 3 dB. By default boost mode is enabled.
The
setPowerMode() function allows user to set the power mode (boost mode). The parameter values are: 0 (boost disabled) or 1 (boost enabled).Example of use
{
xbeeZB.setPowerLevel(0); // Set Power Output Level to the minimum value
xbeeZB.getPowerLevel(); // Get Power Output Level
xbeeZB.setPowerMode(0); // Disable boost mode
xbeeZB.getPowerMode(); // Get power mode
}
Related variables:
xbeeZB.powerLevel → stores the power output level selectedxbeeZB.powerMode → stores the power output level selected• Power Level configuration example:
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
{
xbeeZB.getRSSI();
}
Related variables:
xbeeZB.valueRSSI → stores the RSSI of the last received packetThe 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.
• Getting RSSI example:
Last modified 2yr ago