ARF7419A ADEUNIS, ARF7419A Datasheet - Page 11

• Manufacturer Part Number: ARF7419A
• Description: MODULE, ARF44
• Manufacturer: ADEUNIS
• Type: Modem Moduler

Specifications of ARF7419A

• Modulation Type: FM
• Data Rate Max: 19.5Kbps
• Sensitivity: -103dBm
• Supply Current: 36mA
• Features: Two-way Digital Link Over 300m, 19.2kbps UART Data Rate, Data Transmission Via UART Serial Interface
• Rohs Compliant: Yes

Tips 2 :
Exiting command mode
command
ATO <cr>
Transceiver mode
In transceiver mode, the module works with a transparent protocol: When
transmitting, data received from the serial link are transmitted on the radio
link. When data are received on the radio link, these data are sent on the
serial link. The module acts as a wire serial link.
The communication is always half-duplex. The radio transmission is
processed prior to the radio reception (when the transceiver is sending a
radio frame, it is not able to decode any incoming radio frame).
If no data are sent on the serial link, the modem is waiting for radio
reception. Each radio frame sent by another modem is received and the
validated data extracted from the radio frame are sent on the serial link.
All the data received on the serial link are encapsulated in a radio frame.
When acting as transceiver, the radio frame transmission starts as soon has a
char is available on the serial link.
The radio frame format is :
<Preamble><synchro>DATA <postambule>.
Preamble, synchronisation and postambule are used for the radio reception.
Ref. 08-07-V5-lmn
RXD
line
Idle line for S214
duration
TRANSCEIVER MODE
(return back in transceiver mode): send the serial
+
+++ (consecutive)
+
+
Idle line for S214
duration
A
RF44
User Guide
COMMAND
MODE
p. 9
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