CA (CCA Threshold)

This command applies to the XBee 3 802.15.4 RF Module.

Defines the Clear Channel Assessment (CCA) threshold. Prior to transmitting a packet, the device performs a CCA to detect energy on the channel. If the device detects energy above the CCA threshold, it will not transmit the packet.

The CA parameter is measured in units of -dBm. The CCA threshold is set upon device initialization, any change to the CCA threshold must be written to flash with the WR command and the module reset (power cycle or FR command) before the new threshold is observed.

You can set CA to 0 to disable CCA; this can improve latency but may cause interference with other 2.4 GHz devices when transmitting.

Parameter range

0 (disabled), 0x28 - 0x64 (-dBm)

Default

0x41