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ARF868 Radio Modems - Guide utilisateur / User guide version V2.2.2
(*) The RS485 link needs to be adapted. The modem contains a 120 Ohm resistor (Terminal mode) which needs to be selected (see § 5) if the
modem is situated at the end of the RS485 line.
1.8. Service interface
The Modem is fitted with 2 push buttons (1 & 2) on its rear face enabling the base settings to be restored in the event of troubleshooting dia-
gnostics. The two-colour indicator light on the front face completes this HMI.
FR
Fonction
Button
Modem reset
Return to
FACTORY serial
EN
link parame-
ters
Forcing of the
AUTO serial
link parame-
ters
Entry into the
Command
BP2 and BP1
mode
Restarting of
the modem
BP2 and BP1
with its de-
fault settings
1.9. Mechanical installation - Optimizing performance
Sequence
BP2
BP1
BP1
1
Press BP2 and
hold
3
Release BP2
1
Press BP2 and
hold
3
Release BP2
135mm
Action
Pressing BP2 resets the Modem. Hence the equipment
Press BP2 then
restarts with the parameters in its permanent memory, as
release
they were configured at the last AT&W command (see § 5
Command mode).
Long pressure on BP1 (> 3s) enables forcing of the serial
Long pressure on
link parameters to: RS232, 9600bauds, 8 bits, no parity, no
BP1 superior to 3
data rate control. This action will be confirmed by 3 flashes
seconds
of the green indicator light.
Brief pressure on PB1 (< 3s) enables restoration of the
Brief pressure on BP1
serial link default settings (interface self-detection, Auto-
inferior to 3 seconds
baud, 8 bit data, no parity, no data rate control). This action
will be confirmed by 3 flashes of the green indicator light.
2
Press BP1 and hold
Holding down BP1 (<3s) after having released BP2 triggers
entry into the Command mode. This action will be confir-
4
med by 3 flashes of the red indicator light.
Hold BP1 less than 3
sec then release
2
Press BP1 and hold
Holding down BP1 (>3s) after having released BP2 triggers
restarting of the modem with all the default settings (fac-
tory settings). This action will be confirmed by 3 flashes of
4
the red indicator light.
Hold BP1 more than
3 sec then release
35mm
75mm
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