Br (Rf Data Rate) Command; Bt (Guard Time Before) Command - Digi XTend User Manual

AT Command: ATBD
Legacy Modem Non-standard baud rates supported as of firmware v2.x20
Number of bytes returned: 4
Non-standard Interface Data Rates
BD values above 0x38 (Legacy) or 0x4AF (XTend vB) are interpreted as an actual baud rate. When a non-standard
value is sent, the closest interface data rate represented by the number is stored in the BD register. For example, a
rate of 19200 b/s can be set by sending the following command line "ATBD4B00".
Note on Legacy only: when the BD command is sent with a non-standard interface data rate, the UART will adjust to
accommodate the requested interface rate. In most cases, the clock resolution will cause the stored BD parameter to
vary from the parameter that was sent. Reading the BD command (send the "ATBD" command without an associated
parameter value) will return the value actually stored in the module's BD register.

BR (RF Data Rate) command

<RF Interfacing> The BR command is used to set and read the RF data rate (rate that RF data is transmitted over-the-
air) of the module.
AT Command: ATBR
Binary Command: 0x39 (57 decimal)
Parameter Range:0 - 1
Parameter
0
1
Default Parameter Value:1
Number of bytes returned: 1

BT (Guard Time Before) Command

<AT Command Mode Options> BT Command is used to set the DI pin silence time that must precede the command
sequence character (CC command) of the AT Command Mode sequence.
AT Command: ATBT
Binary Command: 0x04
Parameter Range: 0 - 0xFFFF
Default Parameter Value: 0x0A
Number of bytes returned: 2
XTend RF Module User Guide
RF data rate
10 kb/s
125 kb/s
Command descriptions
32