Westermo RT-370 User manual

REV. A 6623-2280 2018-03 Westermo Teleindustri AB, Sweden
RT-370
User
Guide

RT-370 User Guide
Page 2 (34)
Version History
Version Date Comments
A 2018-03 First version
License and copyright for included Free/Libre Open Source Software
This product includes software developed by third parties, including Free/Libre Open Source Software (FLOSS).
The specific license terms and copyright associated with the software are included in each software package
respectively. Please visit the product homepage for more information.
Upon request, the applicable source code will be provided. A nominal fee may be charged to cover shipping and
media. Please direct any source code request to your normal sales or support channel.

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Table of Contents
1 Foreword .........................................................................................................................................................5
1.1 References ................................................................................................................................................5
1.2 Abbreviations and Terms...........................................................................................................................5
2 RT-370 Introduction........................................................................................................................................6
2.1 Supported Product Versions, Variants and SW ........................................................................................7
2.2 Important Safety Notes..............................................................................................................................7
2.3 Delivery Content........................................................................................................................................8
2.4 Installation Countries.................................................................................................................................8
2.5 Regulatory Notices ....................................................................................................................................9
2.5.1 United States (FCC)...........................................................................................................................9
2.5.2 Canada (IC)........................................................................................................................................9
2.5.3 Certified Antennas for FCC and IC ..................................................................................................10
2.6 Output power limitations..........................................................................................................................10
2.7 RT-370 Identification and Version Information........................................................................................11
3 Technical Features .......................................................................................................................................13
4 Installation.....................................................................................................................................................13
4.1 Installation Procedure, Overview.............................................................................................................13
4.2 Dimensions for Fixing Points...................................................................................................................14
4.2.1 Mechanical Overview .......................................................................................................................14
4.2.2 Mechanical Integration, Fixing Points and Connector Positions......................................................16
4.3 Considerations When Mounting the Device............................................................................................17
4.3.1 Typical Power Consumption.............................................................................................................17
4.3.2 Temperature Alarms.........................................................................................................................17
4.3.3 General Installation Considerations .................................................................................................17
4.3.4 Outdoor Installation with Sun Load ..................................................................................................17
4.3.5 Ambient Operating Temperature Range..........................................................................................17
4.3.6 Installations at Very High Temperatures..........................................................................................18
4.4 Connecting the System Grounding .........................................................................................................20
4.5 Connecting the RF Antenna Interfaces...................................................................................................21
4.5.1 RF Antenna Interface Operation Modes ..........................................................................................21
4.5.2 Monitoring Antenna RF Connector...................................................................................................22
4.5.3 Communication Antenna RF Connectors.........................................................................................23
4.6 Connecting the Fiber Optical Cable ........................................................................................................24
4.7 Connecting the AC Power Feed..............................................................................................................25
4.7.1 Power Consumption Examples........................................................................................................27
5 Outdoor Radio Access Point Configuration and Use...............................................................................29
5.1 LED Indicators During Power Up Sequence...........................................................................................29
5.2 Connecting the service Ethernet .............................................................................................................29
5.2.1 Service Ethernet Port Features........................................................................................................30
5.3 RT-370 Factory Reset Interface, Process for Factory Reset..................................................................31
5.3.1 Factory Reset Adapter Specification................................................................................................31
5.3.2 Factory Reset Procedure .................................................................................................................32
6 Maintenance..................................................................................................................................................33
6.1 Cleaning– Resistance to Chemicals........................................................................................................33
6.2 Troubleshooting Based on Functional Behavior .....................................................................................34
6.3 Repair Work.............................................................................................................................................34
6.3.1 Product Exchange............................................................................................................................34

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Figures and Tables
Figure 1 RT-370.......................................................................................................................................................... 6
Figure 2 RT-370 Block diagram.................................................................................................................................. 6
Figure 3 Product identification label position............................................................................................................11
Figure 4 Product identification label example...........................................................................................................11
Figure 5 Product label example................................................................................................................................12
Figure 6 RT-370 Mechanical overview..................................................................................................................... 14
Figure 7 RT-370 connectors..................................................................................................................................... 16
Figure 8 Installation with blocked airflow shall be avoided....................................................................................... 18
Figure 9 Installation with free airflow – good installation..........................................................................................18
Figure 10 Improved heat transfer based on fixing plate...........................................................................................19
Figure 11 The grounding screw................................................................................................................................20
Figure 12 Monitoring antenna interface....................................................................................................................22
Figure 13 Communication antenna interfaces.......................................................................................................... 23
Figure 14 Fiber optic ETH interface..........................................................................................................................24
Figure 15 AC interface.............................................................................................................................................. 25
Figure 16 Power, operation, failure and FO Ethernet interface LEDs...................................................................... 29
Figure 17 Service 1000Base-TX interface................................................................................................................30
Figure 18 Factory reset plug X-coded......................................................................................................................31
Table 1 Supported product versions, variants and SW.............................................................................................. 7
Table 2 Important safety notes................................................................................................................................... 7
Table 3 Delivery content............................................................................................................................................. 8
Table 4 Installation countries...................................................................................................................................... 8
Table 5: FCC and IC certified antennas................................................................................................................... 10
Table 6: Output power limitations.............................................................................................................................10
Table 7 Product identification................................................................................................................................... 11
Table 8 Product label information.............................................................................................................................12
Table 9 Installation procedure.................................................................................................................................. 13
Table 10 Dimensions and weight ............................................................................................................................. 15
Table 11 Fixing points and connector positions .......................................................................................................16
Table 12 Installation procedure, fixing the protective earth...................................................................................... 20
Table 13 Pinning: RF antenna connector.................................................................................................................21
Table 14 RF Antenna interface operation ................................................................................................................21
Table 15 Pinning: Fiber optic ETH connector........................................................................................................... 24
Table 16 Fiber optic ETH specification..................................................................................................................... 24
Table 17 Installation procedure, installing fiber optical cable...................................................................................24
Table 18 Pinning: AC Mains Connector ................................................................................................................... 25
Table 19 Installation Procedure, Installing AC Cable...............................................................................................25
Table 20 Power feed specification............................................................................................................................26
Table 21: 2.4 GHz power consumption with 100 VAC.............................................................................................27
Table 22: 2.4 GHz power consumption with 230 VAC.............................................................................................27
Table 23: 5 GHz power consumption with 100 VAC ................................................................................................ 28
Table 24: 5 GHz power consumption with 230 VAC ................................................................................................ 28
Table 25 Service 1000Base-TX Connector..............................................................................................................30
Table 26 4.6.1 Ethernet port features.......................................................................................................................30
Table 27 Factory reset procedure ............................................................................................................................32
Table 28 Exchange flow ...........................................................................................................................................34

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1 Foreword
This document describes the Installation procedure of the RT-370 device.
1.1 References
No. Title
[1] Software Management Guide
[2] RT-370 Datasheet
1.2 Abbreviations and Terms
Abbreviation Description
AP Access Point
BSSID Basic Service Set ID
EMC Electro Magnetic Compatibility
ETH Ethernet
FAI First Article Inspection
FO Fiber Optic
GW Gateway
HTTP Hyper Text Transfer Protocol
IC Industry Canada
ID Identification
IP Internet Protocol
LED Light Emitting Diode
MAC Media Access Control
MMI Man-Machine Interface
ODC-2 Fiber Optical Outdoor Connector from Huber & Suhner (H&S)
OD RAP Outdoor Radio Access Point
PE Protective Earth
RSSI Receive Signal Strength Indicator
RX Receive
SN Serial Number
SNMP Simple Network Management Protocol
STA Station
TRE Trackside Radio Equipment
TX Transmit
WLAN Wireless Local Area Network

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2 RT-370 Introduction
The RT-370 is a wireless communication product, developed for demanding industrial and railway applications.
It is a radio device operating at 2.4 and 5 GHz WLAN bands, and can be configured as Access Point.
The Westermo configuration management tool, WeConfig, can be used for discovery and basic configuration and
maintenance. The configuration can be done via SNMP or via WebGUI. The status information is available in local
LED status indicators, and through SNMP/WebGUI.
Figure 1 RT-370
The RT-370 functional block diagram is shown in Figure 2.
Figure 2 RT-370 Block diagram

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2.1 Supported Product Versions, Variants and SW
Supported product versions, variants and SW:
Specification Value Notes
Product Versions/ Variants RT-370
Software Version V6.6 and higher
Table 1 Supported product versions, variants and SW
2.2 Important Safety Notes
Notice
The optical fast Ethernet interface of this device uses a class 1 laser product. It complies with EN
60825-1 and FDA 21 CFR 1040.10 and 1040.11
The laser is eye-safe under all operating conditions.
Danger!
Do not use damaged equipment and/or accessories such as damaged power cord.
Danger!
Never try to open the device. There are no serviceable parts inside! By trying to open the device you
will be exposed to a risk of death or injury.
Warning!
Product warranty gets void and any liability will be disclaimed when opening the device.
Warning!
Read this user guide carefully before mounting, installing and operating the device.
Warning!
Never unplug equipment from the electrical outlet by holding the cord only, always disconnect the
cable by applying force directly to the plug.
Warning!
Do not operate the device in any other environmental conditions than it is designed for.
Table 2 Important safety notes

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2.3 Delivery Content
The delivery consists of following main components:
Description Number of Parts Notes
RT-370 1
Connector Dust Cap 6 Temporary protection of connectors:
- 1 plastic cap for FO connector
- 1 plastic cap for ETH connector
- 4 plastic caps for antenna connectors
Table 3 Delivery content
2.4 Installation Countries
Installation country regulatory limits and operating parameters are controlled by Software Country Code
parameter.
This product supports:
Country Code Operating Frequency Ranges Notes
Europe (EU) 2412 … 2472 MHz and
5180 … 5320 MHz,
5500 … 5700 MHz
Operation according to ETSI limitations
For detailed specification, refer to document [1]
United States
(USA) 2412 … 2472 MHz and
5180 … 5320 MHz,
5500 … 5700 MHz
5725 … 5850 MHz
Operation according to FCC limitations
For detailed specification, refer to document [1]
Canada (CANADA)
2412 … 2472 MHz and
5180 … 5320 MHz,
5500 … 5700 MHz
5725 … 5850 MHz
Operation according to IC limitations
For detailed specification, refer to document [1]
Table 4 Installation countries
Note: Further Software releases might support additional country codes, for up-to-date country code specification
refer to document [1]

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2.5 Regulatory Notices
Caution!
Any changes or modifications shall be approved by the party responsible for compliance. If not, users could void
the user's authority to operate the equipment.
Country code and antenna gain needs to be set properly for correct functionality in the installed country.
2.5.1 United States (FCC)
The enclosed device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(i.) this device may not cause harmful interference and (ii.) this device must accept any interference received,
including interference that may cause undesired operation.
Contains FCC ID: 2AEJD-103902-DT50RF
RF Exposure requirements:
To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance of 20 cm or more
should be maintained between the antenna of this device and persons during operation. To ensure compliance,
operations at closer distances than this are not recommended.
Antennas:
The device can operate with the antennas listed in 2.5.3.
2.5.2 Canada (IC)
This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two
conditions:
1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired operation of
the device.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de
licence.L’exploitation est autorisée aux deux conditions suivantes:
1. l’appareil ne doit pas produire de brouillage.
2. l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d’en compromettre le fonctionnement.
IC Certification Number of the implemented WLAN communication module: 9301A-103902DT50
Antennas:
The device can operate with the antennas listed in 2.5.3.

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2.5.3 Certified Antennas for FCC and IC
The following antennas can be used with the device (the antenna type ID has to be set to the right value):
Type Part number Manufacturer Gain Chains Antenna
Type ID
Dipole F51-N Tekfun 2 GHz: 4.5 dBi max
5 GHz: 7 dBi max 1, 2, 3 04
Patch SPA 2400/75/8/0/V Huber & Suhner 2 GHz: 7.5 dBi max 1, 2, 3 05
Patch SPA-5600/40/14/0/V_2 Huber & Suhner 5 GHz: 14 dBi max 1, 2 06
Patch SPA-5600/65/9/0/ MIMO Huber & Suhner 5 GHz: 9 dBi max 1, 2, 3 07
Shark SPA-5600/45/12/10/V Huber & Suhner 5 GHz: 12 dBi max 1, 2 08
Table 5: FCC and IC certified antennas
2.6 Output power limitations
The RT-370 has following output power limitations for ambient temperatures from -40°C to +70°C.
Active antennas Max. output power
1 22 dBm per chain
2 22 dBm per chain
3 22 dBm per chain
Table 6: Output power limitations

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2.7 RT-370 Identification and Version Information
Product identification information is available at the product label. The product label is fixed to the device.
Figure 3 Product identification label position
Figure 4 Product identification label example
Specification Value Notes
Product Name RT-370
Part Number 3623-0770
SN XXXXXXXX Internal serial number
Manufacturing Date YYWW The date format is:
YY = manufacturing year
WW = manufacturing week
BAR CODE SN information Data matrix
Hot surfaces
Surface temperature can be above 60°C
Table 7 Product identification

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At the rear side of the product further product specific information is printed to a second label.
Figure 5 Product label example
Specification Value Notes
Product Name RT-370
Part Number 3623-0770
Max current 0.2 A Information on input current
Power Information on input power feed
WEEE
This symbol, found on the product indicates
that this product should not be treated as
household waste when disposing of it.
Instead it must be handled over to an
applicable collection point for the recycling of
electrical and electronic equipment.
By ensuring this product is disposed correctly,
you will help prevent potential negative
consequences to the environment and human
health, which could be otherwise be caused
by inappropriate disposal of this product.
CE
CE mark
Notified body 0682 Identification number of the notified body
Cetecom ICT Services GmbH Germany
R&TTE directive
Class 2 radio equipment for which restrictions
apply to putting into service.
Hot surfaces
Surface temperature can be above 60°C.
FCC / IC e-label
Link to the FCC / IC e-label
Table 8 Product label information

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3 Technical Features
Technical features are described in the reference document [2].
4 Installation
4.1 Installation Procedure, Overview
Order of Installation Step Description
1. Fixing The product is fixed in operating environment, ensuring that the environment
complies with the installation environment constrains. See chapter 4.2
2. System Grounding The system grounding is ensured and verified based on customer installation.
See chapter 4.4
3. Antennas The antenna interfaces are installed based on customer requirements. See
chapter 4.5
4. Ethernet The Ethernet data interface is installed. See chapter 4.6
5. Power Feed Power feed cable is connected (the power may be already activated in the cable),
the power supply is switched on and verify that the LED indicators shows correct
power up procedure. See chapter 0
6. Configuration The configuration process is described in reference document [1] chapter:
Configuration.
Table 9 Installation procedure

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4.2 Dimensions for Fixing Points
4.2.1 Mechanical Overview
Figure 6 RT-370 Mechanical overview

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Parameter Value Notes
Maximum dimensions 195 x 110 x 86.3 mm Without cables
Maximum dimensions, with cables
but not including antennas App 320 x 110 x 87 mm Space needed for installation
Clearance 300 mm For cabling
Location of the fixing points
In each corner With four M6 screws
Color RAL 7006, beige grey Powder coating
Protection IP66
Weight 1.75 kg
Table 10 Dimensions and weight

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4.2.2 Mechanical Integration, Fixing Points and Connector Positions
The product must be fixed with the four fixing points located at the corners of the product. M6 screws shall be
used for the fixation of the product. The screws shall be tightened with min. 3.0Nm (fixing screw ISO 898/1, quality
class 8.8).
NOTICE: All four specified fixing points must be used for fixing. The fixing surface should be flat to have all fixing
points connected to the surface.
The product has a membrane vent at the bottom of the product for equalizing pressure changes.
NOTICE: The vent does not require any maintenance. Any manipulations at the vent are not allowed.
Specification Value
Fixing holes
positions Fixing holes without threads, for 6 mm screws: four pieces of slot holes, see: Figure 6
0 mm, 92 mm 180 mm, 92 mm
0 mm, 0 mm 180 mm, 0 mm
RT-370 fixing
screws M6 screws/ 6 mm screw, screw length to be selected by installer based on installation environment and device weight
Clearance Slot holes require a clearance of min. 10 mm at the long side of the RT-370 for correct
installation and removal. Clearance for heat transfer is to be considered separately.
Connector
positions
AC POWER Antenna 1 Antenna 2 Antenna 3 100Base-FX FO
ETH 100Base-TX ETH
See
Figure 7
Figure 15
See
Figure 7
Figure 13
See
Figure 7
Figure 13
See
Figure 7
Figure 12
See
Figure 7
Figure 14
See
Figure 7
Figure 17
Grounding See Table 12
Table 11 Fixing points and connector positions
Figure 7 RT-370 connectors

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4.3 Considerations When Mounting the Device
4.3.1 Typical Power Consumption
•For normal operation the power consumption is app. 10 W
•The power consumption for standby operation (sending beacons, no associated client) is app. 8.5 W
4.3.2 Temperature Alarms
The product has integrated temperature sensors for monitoring the internal device temperature. The limits for the
sensors are set so, that operation without alarm is ensured for ambient temperatures as specified assuming
correct installation.
4.3.3 General Installation Considerations
When planning an installation at least the following points shall be considered:
•Indoor: protecting for dust (to ensure heat dissipation), vandalism, animals (rats, birds etc)
•Outdoor: protecting for sun (to optimize ambient temperature range), dust, dirt, vandalism etc.
4.3.4 Outdoor Installation with Sun Load
For installation at places where the product would be exposed to direct sunshine, user must take care that the
ambient temperature range is ensured under the sun load conditions. Direct sun load is heating the product and
therefore limiting the max ambient temperature (assumed temperature rise due to 1000 W/m2 sun load: 15°C).
There are temperature alarms built in the product alarming for too high temperatures. For more details see SW
User Guide.
A protective housing with the goal to block the sunshine could be implemented to protect the product from sun
load. The protective housing still needs to ensure air circulation around the product.
4.3.5 Ambient Operating Temperature Range
The RT-370 includes a vent allowing controlled air exchange due to temperature changes. Humidity is blocked by
the vent.
To ensure correct operation over the whole specified temperature range, certain aspects need to be considered.
The limits are defined for installations with free air flow in installation environment.
It shall be noted that in real environment:
•Limited air flow is rising the device temperature and may lower the upper limit of the operating temperature
range
•Conducted heat exchange through metal surfaces at the product fixing point is improving the device heat
transfer and improving the operating conditions
•Temperature is dependent on operation parameters, like RF output power, amount of traffic
•RT-370 has internal temperature sensors that will issue alarms for too high or too low temperature. The
operating conditions shall be ensured so that the normal operation does not cause temperature alarms. Any

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temperature alarms shall be immediately rectified. See reference document [1] for detailed specification of the
temperature sensors alarms.
•The internal temperature alarms are adjusted so that the device supports the operating ambient temperatures
for the nominal application scenario, i.e. considering typical power consumption of 7 W
•In real environment the power consumption will be slightly lower due to the fact that there are not always trains
associated in the AP, typical real installation power consumption is in range 7..9 Watts
4.3.6 Installations at Very High Temperatures
For installations, where the product is operated close to its maximum specified ambient temperature (+55°C
<TAmbient < +70°C), it must be ensured that the natural convection is not blocked by objects nearby.
Figure 8 Installation with blocked airflow shall be
avoided Figure 9 Installation with free airflow – good installation

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When operating at ambient temperatures above app. +60C it is recommended to mount the product to a metallic
base plate to improve the heat dissipation. The base plate increases the surface to spread the heat.
Figure 10 Improved heat transfer based on fixing plate

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4.4 Connecting the System Grounding
In the RT-370 construction, the housing is connected to the protective earth, signal ground. The RF antenna
interfaces are referenced to the GND. The 1000BASE-TX Ethernet data interface is isolated.
There are two protective earth connection points, one at the AC connector and a second one at the grounding
screw at the housing.
Figure 11 The grounding screw
Important: For a safe operation and proper protection against lightning, both protective earth contacts of
RT-370 must be connected to system ground. The grounding must be done always as a first step before
connecting any other external interfaces to the product
For the grounding at the M5 stud, a wire with a cross section of at least 6.0 mm2shall be used.
Order of Installation Step Description
1. Open screw M5 nut must be opened until terminal of the protective earth can be placed at its
place
2. Install the wire The grounding wire is set below the rip-lock washer
3. Fix the nut Tighten the nut for safe operation and good reliable grounding.
The tightening torque shall be 2.0 Nm.
Table 12 Installation procedure, fixing the protective earth