4.2.2 Connecting the receiver as DCE on RS232
4.2.3 Power supply voltage
Switch off the power supply, then connect the power supply to the screw terminals marked + and -.
4.3.
Command mode
On delivery, the receiver is operational (the default factory configuration is 9600,n,8,1).
However you can customize the module's parameters by using the serial interface (RS232 or USB) which is de-
dicated to AT commands. You can send these commands from a terminal (with a delay of less than 10 seconds
between each character).
Command mode is used to read and update the module's configuration registers. The registers are divided into
two types: read only (W) and read/write (R/W) (cf Section 6 «Training procedures»).
4.3.1 Commands
A command starts with the 2 ASCII «AT» characters – «AT means «Attention» – followed by one or more cha-
racters or other data.
Each command must end with a <cr> (carriage return, ASCII code 0x0D).
The response sent on the serial output for each command corresponds to the ASCII character 'O' for a command
that is accepted and the ASCII character 'E' for an error.
Gamme ARF18 UG V1.6
N° / SUB-D 9
NOM
+ Vcc
5
GND
3
RXD
2
TXD
+
-
RX
TX
+
Supply
DC
(8 – 30 V)
+
-
RX
TX
ON
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