User Manual
RM169-1
Pag. 25
Doc. MI004760-E
Rev. 0
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In the "modbus standard" mode you can enable the
LBT
feature: the radiomodem waits that the active channel
is free before transmitting the radio packet.
When the LBT function is active the device counts the seconds of data ON-AIR transmission in order to operate
according to EN300 220-1 standards that require to not exceed a transmission time of 100 seconds in a 1 hour
period. After 100 seconds the device stop the transmission and wait the 1 hour period before to allow a new
transmission.
AES Enable:
Enable or disable the AES-128 data encryption. In the transmitted packet, the encoding and decoding is done
on the payload only.
Set AES Key:
By pressing this button a window opens where the value of the 128-bit AES key is set. The user must insert 16
ascii characters. The configurator displays an error message if, upon pressing the "OK" button, the string of the
AES key is incomplete (i.e. less than 16 characters are inserted).
Note
: If the AES is used, all the radiomodems in the same network
must use the same AES key
. If the key
setting is not the same, the data transiting on the serial line are not interpretable by the connected hardware.
