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208210A_UG_V1.6_ARFx3-PRO
In order to prevent loss of characters, you should:
•
use flow control (addressed mode with hardware handshake).
•
or use a serial transmission rate less than or equal to the radio transmission rate.
•
or limit the size of the serial data to the maximum size of the internal buffer (S218).
NOTE 3
(S200 register) cf page 10.
NOTE 4
The preamble length is linked to the current radio transmission rate.
Preamble values are:
The default preamble length The minimum preamble length
wide band channel
(high radio transmission rate)
5 ms
4 ms
narrow band channel
(low radio transmission rate)
20 ms
10 ms
PLEASE NOTE
It should be borne in mind that reducing the default preamble length will reduce the transmission delay but risks
generating possible errors in the frame transmission rate (up to 1 or 2/1000)!
In the case of narrow band, it is not possible to set the preamble length below 10ms.
NOTE 5
When you change the serial link configuration (transmission rate, parity, stop bit…), the response is made with
the previous format of the serial link. It is the next command that will be sent using the new format of the serial
link.
NOTE 6
When the serialization of the RSSI is selected (at receiver), a warning (WARNING_3) appears, asking the user to
ensure that the side of the transmitter, the flow at the selected serial is equal to the selected radio.
In the opposite case, a phenomenon of fragmentation of data may appear, making it completely unusable data
received on the serial link.
7.
Specifications
7.1. General technical characteristics
Operating temperature
-30 to +70 °C
Electricity power supply
4.5 to 36 V (integrated regulator)
Dimensions
145 x 100 x 40 mm
Number of channels
2 WB channels and 67 NB channels
Modulation
GFSK
Case
IP65 case with integrated or external aerial
Transmitter
Frequencies programmable
from 863.05 to 869.60MHz
RF transmitted power programmable
from 10 to 27dBm
Tx / Rx consumption
3.2 W / 0.27 W
Receiver
GB
