© 2019 Garderos GmbH
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3.3.1 DC power connection
GND and VCC are marked. The allowed power range is 12-60V DC. Make sure to
correctly connect 0V/GND (-) and VCC (+) to power as marked on the front plate.
The router supports voltage levels up to +72VDC. When using higher input voltages,
the router may be damaged.
3.3.2 CON/RS-485
The RJ-
45 connector’s pins are assigned to an RS-232 serial console and an RS-485
half duplex industrial serial interface. Pin assignment is:
PIN no.
Description
1
RS-232 console port RTS
2
RS-485 half duplex B
3
RS-232 console port TX
4
GND
5
GND
6
RS-232 console port RX
7
RS-485 half duplex A
8
RS-232 console port CTS
Serial cables can be ordered from Garderos.
3.3.3 Antenna connectors
Depending on the router type the antenna connectors M1, A1, M2, A2 and M3 are
used for different antenna connections, e.g. a 4G or a WiFi card, or they do not exist
on the router. The connectors are always SMA female for WWAN antennas and RP-
SMA for WiFi antennas. Login to the router and use the command:
R3700# show hardware connector
to show the assignment of the antenna connectors.
3.3.4 Optional RS-232 connector
The R-3700 series routers can be equipped with an additional fully allocated DSUB-9
connector for RS-232. This must be ordered as a special option. The DSUB-9 socket
is allocated in the following way:
PIN no.
Description
1
RS-232 DCD, data carrier detect
2
RS-232 TX, transmit data
3
RS-232 RX, receive data
4
RS-232 DSR, data set ready
5
Ground (GND)
6
RS-232 DTR, data terminal ready
7
RS-232 CTS, clear to send
8
RS-232 RTS, request to send
9
RS-232 RI, ring indicator
