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AT commands
LB (LNA Bypass)
This command applies to the XBee SX 868 RF Module.
Sets or reads the LNA bypass enable of the device. If the LNA bypass is enabled, the RX current draw
improves by 6 mA while the RX sensitivity degrades by approximately 12 dB.
Range
0 - 1
Parameter
0
1
Default
0
Diagnostic commands
The following AT commands are diagnostic commands. Diagnostic commands are typically volatile
and will not persist across a power cycle.
BC (Bytes Transmitted)
This command applies to the XBee SX 868 RF Module.
The number of RF bytes transmitted. The firmware counts bytes in every retry and retransmission. A
packet includes not only the payload, but also the preamble, the MAC header, the network header, the
application header, encryption overhead, and the CRC. The purpose of this count is to estimate
battery life by tracking time spent performing transmissions.
BC stops counting when it reaches a max value of 0xffffFFFF. But, you can reset the counter to any
32-bit value—for example 0—by appending a hexadecimal parameter to the command.
Parameter range
0 - 0xFFFF
Default
0
DB (Last Packet RSSI)
This command applies to the XBee SX 868 RF Module.
Reports the RSSI in -dBm of the last received RF data packet. DB returns a hexadecimal value for the -
dBm measurement.
For example, if DB returns 0x60, then the RSSI of the last packet received was -96 dBm.
DB only indicates the signal strength of the last hop. It does not provide an accurate quality
measurement for a multihop link.
Parameter range
0 - 0xFF [read-only]
XBee® SX 868 RF Module User Guide
Mode
LNA Bypass Disabled
LNA Bypass Enabled
Diagnostic commands
117
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