Garderos R-3700 Series User manual

© 2019 Garderos GmbH 1/21
Operating Manual
Garderos R-3700 Series
Ruggedized router (IP42) with
2 RJ-45 10/100/1000 BaseT Ethernet interfaces
1 RJ-45 RS-232 serial interface (management) + RS-485
1 DSUB-9 female RS-232 (full)*
1 or 2 integrated WWAN modems (2/3G, 2/3/4G, CDMA)*
1 or 2 WLAN 802.11n a/b/g/ac*
* optional

© 2019 Garderos GmbH 2/21
1 Safety instructions
Do not open the casing. Warranty shall be void if the warranty seal has been
tampered with.
Don't use or install the device in an explosive atmosphere!
Don't touch any contacts with metallic or pointed items.
This device has no power switch. Please disconnect the power before any
operational work.
In case of any damage to the device, it must not be put into operation.
Do not install the device during a thunderstorm!
Protect the device from heat sources and direct sunlight.
Protect the device from aggressive fluids and vapors.
The router emits electromagnetic waves. To prevent other devices from
being disturbed and to protect other people, install the router only as
described in this document and make sure to comply with safety distances.
Unauthorized persons must not get nearer than 60cm to the
GSM/UMTS/LTE antennas.
Unauthorized persons must not get nearer than 7cm to the WLAN
antennas.
Depending on the router type, the antenna and configured networks the
safety distances may be smaller. Use the calculations in the Annex to
calculate the minimum safety distance of your router.
Remove the power connector before performing any maintenance or
cleaning work near to the antennas or directly at the router.
Read these safety instructions before handling or installing
the device.
Risk of burns! The device can operate in surroundings of
more than 70 °C, so the surface can get very hot. Install the
router inaccessible for unauthorized personnel. Before
touching the router, remove the power supply and wait for
10 minutes for the router to cool down or wear protective
gloves.

© 2019 Garderos GmbH 3/21
2 General information
2.1 Router type
The Garderos R-3700 routers are available as several different models with optional
WLAN, 2G/3G/4G and CDMA interfaces. This document is a general description for
the following router types:
Type
Eth.
RS-232
(Mgmt.)
RS-232
RS-485
WLAN
2/3G
2/3/4G
CDMA
R-3701
2
1
(opt.)
1
1
R-3703
2
1
1
2
R-3707
2
1
(opt.)
1
R-3721
2
1
1
1
1
R-3722
2
1
1
1
1
R-3723
2
1
1
2
1
R-3724
2
1
1
2
1
R-3727
2
1
(opt.)
1
1
R-3728
2
1
(opt.)
1
1
R-3741
2
1
1
1
1
1
R-3742
2
1
1
1
1
1
R-3745
2
1
1
1
2
R-3747
2
1
1
1
1
R-3748
2
1
1
1
1
R-3749
2
1
1
2
R-3751
2
1
1
1
1
1
R-3752
2
1
1
1
2
R-3755
2
1
1
1
2
R-3757
2
1
1
1
1
R-3758
2
1
1
2
R-3759
2
1
1
2
R-3771
2
1
1
1
1
R-3773
2
1
1
2
1
R-3777
2
1
(opt.)
1
1
The router type can be identified by the serial number of the router. The type is coded
into the first 5 characters of the serial number.
2.2 Included in delivery of Garderos R-3700
Standard scope:
Garderos R-3700 router
Phoenix 2-pin power connector and grounding kit
Optional accessories:
Antennas ( 2G/3G/4G, CDMA)
Antenna connector cables and adapters
Industrial grade power supply
Serial cables
Holding angle and additional DIN rail clip
Please check the contents of the package after receipt.

© 2019 Garderos GmbH 4/21
3 Hardware
3.1 Installation
The Garderos R-3700 has 2 options for mounting.
3.1.1 Mounting on integrated DIN rail mounting clip
Mount the router on a DIN rail as shown in the following drawing. Insert the upper
metal hook to the DIN rail first, and then push the plastic holder into the bottom part
of the DIN rail until it clicks in (see picture). The IP protection in this position is IP 41.
For unmounting push the router up, then remove it from the top of the DIN rail first.

© 2019 Garderos GmbH 5/21
3.1.2 Mounting for IP42 ingress protection
Using a DIN rail clip the router can be mounted with the connector side down. The
DIN rail clip will be attached to the router using two M4 screws. The IP protection in
this position is IP 42. Insert the upper part of the clip to the DIN rail, then push the
router down and insert the DIN rail clip to the rail on the lower part.
For unmounting push the router down and remove the lower part of the clip from the
DIN rail first.

© 2019 Garderos GmbH 6/21
3.1.3 Mounting with holding angle
Using an additional holding angle, the R-3700 can be mounted on a DIN rail for IP42
ingress protection, as shown in the following image:
3.1.4 Grounding
Grounding is not required for router operation but it improves the EMI characteristics
and is mandatory to comply with the standard IEC 61850-3. For grounding attach a
1.5mm² ground cable with a 0.8 x 2.8mm flat connector to the spade connector on
the R-3700 router as shown in the following picture.

© 2019 Garderos GmbH 7/21
3.2 Status LEDs
The Garderos R-3700 has 8 LEDs on the front, showing its operational status. All
LEDs, except from the Ethernet LEDs that are integrated into the RJ-45 Ethernet
sockets, are clearly marked on the casing:
P (green) Shows the status of the router’s power supply and is lit
during the entire period of operation.
S (green) Shows the current state of the router operating system.
The LED blinks during fetching and executing the router
configuration and is permanently lit when the configuration
of the device has been completed.
W1 (green) Depending on the type of the WWAN link this LED signals
the state of the link. The LED is off when no WWAN
connection is active and is lit while at least 1 WWAN
connection is active.
W2 (green) Is lit when the integrated WLAN interface is active.
Eth link (green) Is lit when an Ethernet link was detected.
Eth activity (orange) Blinks during Ethernet activity.
In normal operation mode the LEDs Power and Router Status are on, as well as the
green LEDs of all connected Ethernet ports.

© 2019 Garderos GmbH 8/21
3.3 Connectors
Depending on the type, the Garderos R-3700 routers have different connectors on
the front. All possible connectors are described below; the image shows the front
panel of an R-3728 with an optional RS-232 DSUB9 connector as an example. The
R-3700 routers have 2 SIM card slots on the back:
+ DC-Power connection. + (VCC) and –(0V/GND) are marked on the
casing.
CON/RS-485 RJ-45 jack for RS-232 serial console (Settings: 115200 / 8 / N /
1 / none) and RS-485 half duplex serial interface for connection
to industrial components.
eth0 RJ-45 jack for 10/100/1000 BaseT Ethernet
eth1 RJ-45 jack for 10/100/1000 BaseT Ethernet
M1 Main 1 antenna connector. See 3.3.3 for description.
A1 Auxiliary 1 antenna connector. See 3.3.3 for description.
M2 Main 2 antenna connector. See 3.3.3 for description.
A2 Auxiliary 2 antenna connector. See 3.3.3 for description.
M3 Main 3 antenna connector. See 3.3.3 for description.
RS-232 Optional: RS-232 connector.
Select an antenna for the correct band to get the best performance
on the network. Depending on the router type the WWAN supports
different frequencies. WWAN capabilities can be shown by the
command „show hardware wwan wwan0 information”.
See below for more information about login and command line
interface.

© 2019 Garderos GmbH 9/21
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

© 2019 Garderos GmbH 10/21
4 Software
The Garderos R-3700 routers run the Garderos Router Software (GRS) operating
system.
GRS provides the following functions:
Router operating system
Automatic management of the configuration:
Local configuration (startup configuration) to configure the router locally.
Remote configuration that can be downloaded from a web server for
central configuration management.
Interfaces to other systems via APIs:
HTTPS Configuration API
RADIUS authentication
NTP
SNMP
…
The GRS documentation is available online at:
https://www.garderos.com/techsup
Username and password for login to the support web are available from your
Garderos sales representative.
The documentation contains a detailed description of all GRS features. This
operating manual is limited to the basic steps for starting the router so that it can be
commissioned.