OXTS RT-XLAN User manual

RT-XLAN
High performance
WLAN radio unit
User Manual

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Legal notices
Information furnished is believed to be accurate and reliable. However, Oxford Technical Solutions
Limited assumes no responsibility for the consequences of use of such information nor for any
infringement of patents or other rights of third parties which may result from its use. No licence is
granted by implication or otherwise under any patent or patent rights of Oxford Technical Solutions
Limited. Specifications mentioned in this publication are subject to change without notice and do not
represent a commitment on the part of Oxford Technical Solutions Limited. This publication
supersedes and replaces all information previously supplied. Oxford Technical Solutions Limited
products are not authorised for use as critical components in life support devices or systems without
express written approval of Oxford Technical Solutions Limited.
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Copyright notice
© Copyright 2022, Oxford Technical Solutions.
Revision
Document Revision: 220222 (See Revision History for detailed information).
Contact details
Oxford Technical Solutions Limited
Park Farm Business Centre
Middleton Stoney
Oxfordshire
OX25 4AL
United Kingdom
Tel: [phone]
Fax: [phone]
Web: https://www.oxts.com
Email: [email protected]

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Warranty
Oxford Technical Solutions Limited warrants its products to be free of defects in materials and
workmanship, subject to the conditions set forth below, for a period of one year from the Date of Sale.
“Date of Sale” shall mean the date of the Oxford Technical Solutions Limited invoice issued on
delivery of the product. The responsibility of Oxford Technical Solutions Limited in respect of this
warranty is limited solely to product replacement or product repair at an authorised location only.
Determination of replacement or repair will be made by Oxford Technical Solutions Limited personnel
or by personnel expressly authorised by Oxford Technical Solutions Limited for this purpose.
In no event will Oxford Technical Solutions Limited be liable for any indirect, incidental, special or
consequential damages whether through tort, contract or otherwise. This warranty is expressly in lieu
of all other warranties, expressed or implied, including without limitation the implied warranties of
merchantability or fitness for a particular purpose. The foregoing states the entire liability of Oxford
Technical Solutions Limited with respect to the products herein.
Environmental protection
Waste electrical products should not be disposed of with household waste. Please recycle where
facilities exist. Check with your Local Authority or OxTS representative for recycling advice.

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Contents
Legal notices .......................................................................................................................................1
Copyright notice...................................................................................................................................1
Revision...............................................................................................................................................1
Contact details.....................................................................................................................................1
Warranty..............................................................................................................................................2
Environmental protection.....................................................................................................................2
Introduction .............................................................................................................................................4
Features ..............................................................................................................................................4
Models.................................................................................................................................................4
Scope of delivery.....................................................................................................................................5
Specification............................................................................................................................................6
Installation...............................................................................................................................................6
Mounting to the vehicle........................................................................................................................6
RT-XLAN retaining strap .....................................................................................................................8
RT-XLAN retaining strap installation...................................................................................................9
Connection to RT3000 v3 or RT500.......................................................................................................9
Connection to RTs without an Auxiliary connector...............................................................................10
Connection to RTs via an RT Range S Hunter or Target Box..............................................................13
Connection to RTs via an original RT Range system...........................................................................13
Configuration.........................................................................................................................................15
Operation...............................................................................................................................................16
LED indicators................................................................................................................................16
Checking the communication link......................................................................................................16
Revision history.....................................................................................................................................17
Appendix ...............................................................................................................................................18
Disabling the RT-Range’s wireless LAN ...........................................................................................18

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Introduction
The RT-XLAN is a long-range radio that extends and improves the communication between vehicles
in an RT-Range application. RT-Range is a system that can measure the range from one vehicle to
other vehicles in real time and output its measurements on the CAN bus. It is used for the
development of active safety systems in cars.
The RT-XLAN is designed for easy connection to the RT-Range systems. It is also possible to use it
with both the standard RT-Range and RT-Range S systems The RT-XLAN radios are specifically
designed for outdoor use and have a robust, weatherproof design that can operate within a wide
temperature range. They also feature a low-loss integrated N-type RF connector replacing the need
for radio-to-antenna cable connections that can become a weak link. The RT-XLAN is capable of
reliably improving the data communication throughout the range and will also extend the distance
between vehicles to around 1 km.
Features
There are several features that make the RT-XLAN ideal for use on vehicles with the RT-Range.
These include:
▪Around 1 km robust connection where there is line-of-sight between vehicles.
▪Highly reliable link with very few dropped packets, even at the longer ranges.
▪Superior latency so that it is very rare for packets to take longer than 10 ms between vehicles.
▪Powerful suction mount secures the unit onto vehicles, and a retention strap is provided for
additional security.
▪Wide temperature range, making the RT-XLAN suitable for use in winter and summer
conditions.
▪Uses standard 2.4 GHz or optional 5 GHz radio frequency so can be used licence-free in many
countries.
Models
There are two models in the RT-XLAN family. A base unit is needed to set up the network and then
multiple client units connect to the base-unit. The base unit acts as an access point and all the clients
connect to this access point to share their data.

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Scope of delivery
The RT-XLAN is supplied with all the parts that are needed for use with the RT-Range. Both the base
unit and the client unit come with the same parts. Table 1 and Table 2 list the parts that are delivered
with an RT-XLAN and Figure 1 shows the RT-XLAN and its components.
Table1.SummaryoftheRT-XLANcomponents
Qty
Description
1
RT-XLAN WLAN unit (either base or client, 2.4 GHz or 5 GHz)
1
2.4 GHz antenna or 5 GHz antenna (depending on configuration required)
1
Base-to-antenna extension pole
1
Antenna L bracket
1
Pump cup suction vehicle mount
1
RT-XLAN retention strap
1
110-00274-301 PoE Ethernet to M12 cable
1
RT-XLAN user manual
A base unit and a client unit can be identified by a sticker on the side. The IP address is also shown.
Table2.AdditionalRT-XLANYcablecomponents(whereordered)
Qty
Description
1
14C0147A Y cable for RT-Range or standalone RT
1
14C0149A cigar plug adapter cable
Figure1.RT-XLANcomponents

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Specification
The specifications for the RT-XLAN are shown in Table 3.
Table3.Specifications
Parameter
Value
Voltage
Up to 24 V
Power
~7 W
Power method
Passive power over Ethernet
Operating temperature
-40 oC to +80 oC (suction mount -10 oC to +o45 C)
Wireless LAN radio range
1 km line-of-sight
Wireless LAN delay
<10 ms RMS
Networking interface
1 X 10/100 BASE-TX
Approvals
FCC Part 15.247, IC RS210
RoHS compliance
YES
Operating humidity
5 to 95 % condensing
Shock and vibration
ETSI300-019-1.4
Dimensions (RT-XLAN unit, antenna and mount)
52.5 cm x 15 cm Ø
Dimensions (RT-XLAN unit, including antenna)
37.2 cm x 3.7 cm Ø
Weight (RT-XLAN and antenna)
~0.24 kg
Weight (total including mount)
~1.08 kg
Installation
The installation here assumes that the RT and any RT-Range systems have been installed in the
vehicle already according to the instructions in their manual(s). The installation here covers the RT-
XLAN and how to attach it to the vehicle and to the RT3000 v3 or RT-Range S.
For any installation it is essential to have one RT-XLAN base unit. This would normally be in the
hunter vehicle but it can be in any vehicle. One or more RT-XLAN client unit(s) can be installed in
other vehicles; normally these would be installed in the target vehicles.
In environments where more than one RT-Range is being used the RT-XLAN bases will interfere with
each other. It is essential to only have one RT-XLAN base unit at any one location. When more than
one RT-Range system is being used at the same location and two RT-XLAN bases are needed,
contact OxTS support for further help.
Mounting to the vehicle
The base of the RT-XLAN is a pump cup suction mount that can be attached to any flat non-porous
surface such as glass or vehicle bodywork. This surface can either be metallic or non-metallic, making
the mount ideal for a wide variety of vehicle placement options. Please refer to the drawings in Figure
2 which show the mounting and removal process.

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To attach the device to the vehicle:
1. Wipe the mounting surface on the vehicle to ensure it is free from scratches, dust or dirt.
2. Remove the plastic protection plate from the bottom of the cup.
3. Wipe the base of the suction pad to ensure that it is thoroughly clean.
4. Place the suction pad firmly onto the mounting surface.
5. Repeatedly press the plunger until the red line disappears into the housing
Please note: It is recommended to regularly check that the red line does not re-appear on the
plunger. If it does, repeatedly press the plunger again until it disappears.
To release:
1. Hold the RT-XLAN tight with one hand
2. With the other hand, lift the black tabs on the side of the base to firmly break the seal then
carefully pull the device away from the vehicle.
Note: Care should be exercised when removing the device, there may still be a strong
vacuum seal holding it to the mounting surface.
The plastic protection plate should be retained and replaced on the cup when not in use to protect the
surface from damage.
Although the RT-XLAN is weather resistant, we strongly recommend that the N-Type connector from
the device to the antenna is covered with self-amalgamating tape to help protect it from moisture.
Figure2.Attachingandremoving thepumpcup
NOTE: When removing the pump cup from the vehicle, please take extra care to fully break the seal
on the base using the tab before attempting to pull the device away.
A number of mounting options are available, some of which are shown in Figure 3.

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Figure3.Mountingoptions
The pole for the antenna can be fixed either vertically or horizontally to the base and can be adjusted
to suit the vehicle and environment. By adjusting the mounting location and antenna angle it may be
possible to improve the signal strength of the vehicle-to-vehicle communication.
RT-XLAN retaining strap
For added safety, it is recommended that when installing the RT-XLAN for use on any moving vehicle,
the RT-XLAN retaining strap must always be used. (See Figure 4 below)
Figure4. RT-XLANretainingstrap

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RT-XLAN retaining strap installation
To install the RT-XLAN retaining strap, the suction cup should be removed from the extension pole.
First pass the strap through a secure point in the vehicle such as a grab handle, Isofix loop or boot
hinge. Pull the end marked 6 (see Figure 4) through the loop marked 5 until the strap is secured to
the vehicle.
Next, pull the loop marked 1 over the central metal housing of the suction cup. The extension pole
can then be installed onto the suction cup with the rest of the RT-XLAN installed as before.
The buckle 2 and clasp 3 can be used to remove as much slack as possible before installing the
suction cup on the vehicle.
Connection to RT3000 v3 or RT500
Wiring of the RT-XLAN to the RT3000 v3 could not be easier. First, ensure that the auxiliary user
cable is connected to the RT3000 v3 and then connect the 110-00274-301 PoE Ethernet to M12
cable from the RT-XLAN to the dedicated socket on the Auxiliary cable. This is socket J2 in Figure 5.
This dedicated socket powers up the RT-XLAN as well as handling the Ethernet link.
Figure5. RT500/RT3000v3Auxiliarycabledrawing14C0213

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Connection to RTs without an Auxiliary
connector
If the RT-XLAN is to be used with an RT device other an RT3000 v3 or RT500, then it will be
necessary to supply power and Ethernet to the RT-XLAN via the Y cable converter kit (ordered
separately). The kit contains two cables: 14C0147A (Y cable) and 14C0149A (cigar plug adapter).
Drawings of these cables are shown in Figure 6 and Figure 7.
To use the Y converter cable with the RT-XLAN it must first be coupled to the PoE Ethernet to M12
cable (supplied with the RT-XLAN) to complete the solution.
See Figure 8 for a schematic of this connection.
Note: Do not be tempted to extend the Ethernet cable to the RT-XLAN as this may result in damage if
the connections are crossed over.
Figure6. Ycabledrawing14C0147A
Figure7. CigarplugtoM124PoleMalepin14C0149A
For alternative cabling solutions, the pin connections for the 14C0147A and 14C0149A cables are
given in

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Table 4 and Table 5.

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Table4.PoEcableconnections 14C0147A
Signal Name
Wire Colour
J1
J2
J3
Tx+
Green/White
1
3
N/A
Tx-
Green
2
6
N/A
Rx+
Orange/White
3
1
N/A
Supply
Brown & White
4
N/A
1 & 2
Rx+
Orange
6
2
N/A
Supply Return
Blue & Black
7
N/A
3 & 4
Table5.CigarplugtoM124Pole Malepin14C0149A
Signal Name
Wire Colour
J1
J2
Supply
Brown
1
Centre Core
Supply
White
2
Centre Core
Supply Return
Blue
3
Outer Contacts
Supply Return
Black
4
Outer Contacts
Figure8.WiringdiagramforRT1003/RT2002/RT3000/RT4000
Note: connections not relevant to the RT-XLAN are not shown in this diagram. The RT connections
shown are for an RT1003 / RT3000 v2 / RT4000 unit. With an RT2002, the RT-Range connections
are made directly to the front panel of the RT2002 instead of through the 14C0038A user cable.

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Connection to RTs via an RT Range S Hunter
or Target Box
When connecting the RT-XLAN to an RT Range S Hunter or Target box, simply connect the PoE
Ethernet to M12 cable from the RT-XLAN to the front of the RT-Range S as shown in Figure 9. This
provides power to the RT-XLAN as well as Ethernet as in the RT3000 v3.
Figure9.WiringconnectionstotheRT-RangeSsystem
Note: Connections to the previous generation RT-Range system are described on page 10 of this
manual.
Connection to RTs via an original RT Range
system
When using the RT-XLAN with the original RT-Range system it will be necessary to use the Y cable
converter kit which can be additionally ordered for this purpose.
To use the Y converter cable with the RT-XLAN it must first be coupled to the PoE Ethernet to M12
cable (supplied with the RT-XLAN) to complete the solution.
To use the RT-XLAN with an original RT-Range system, connect the (J2) RJ45 plug on the Y cable to
a spare Ethernet socket located on the front of the RT-Range Hunter or Target unit and the (J3) M12
plug of the Y cable to the spare power output of the RT-Range Hunter or Target unit as shown in

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Figure 10.
Do not be tempted to extend the Ethernet cable to the RT-XLAN as this may result in damage if the
connections are crossed over.
It has not been necessary to disable the wireless LAN in the original RT-Range cases in order to use
the RT-XLAN. However, there may be times when the internal wireless LAN will conflict with the RT-
XLAN. If this happens then the internal wireless LAN in the RT-Range should be disabled. See
Appendix for instructions for achieving this.

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Figure10.WiringdiagramfororiginalRT-RangewithanRT-XLAN
Note: Connections not relevant to the RT-XLAN are not shown in this diagram. The RT connections
shown are for an RT3000 / RT4000 unit. With an RT2002, the RT-Range connections are made
directly to the front panel of the RT2002 instead of through the 14C0038A user cable.
Configuration
There are no user configuration options on the RT-XLAN. However, it is important to make sure that
each unit is compatible with the other units in the environment. There are several items to consider.
▪Each RT-XLAN will have a label showing its configuration.
▪The RT-XLAN labelled “Base” should be used on the Hunter vehicle.
▪The RT-XLAN labelled “Client” should be used on the Target vehicle.
▪There cannot be two RT-XLAN base units in the same environment.
▪There must be one RT-XLAN base unit. The RT-XLAN client units will not communicate with
each other unless there is a base present.
▪Each RT-XLAN has an IP address. All the units being used must have different IP addresses.
Normally the IP address will be in the range from 195.0.0.170 to 195.0.0.175. It is possible to
order different IP addresses from OxTS. This IP address range should not conflict with the
recommended IP addresses with other OxTS equipment.
▪The RT-XLAN will be configured for use in a specific country. Different licensing laws require
different frequencies to be used in different countries. RT-XLAN units from one country cannot
be used automatically with RT-XLAN units from another country.
It is possible to change the configuration in the field but it is necessary to contact OxTS support for
information on how to do this. If any configuration is changed then, as best practice, make sure the
stickers on the outside of the RT-XLAN are changed to reflect the configuration changes made.

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Operation
Once everything is connected, the RT-Range can be powered up. The RT-XLAN should work
automatically and the RT-Range can be used as normal.
LED indicators
Found on the side of the RT-XLAN are a series of LEDs. These provide a quick indication of the
status of the RT-XLAN without the need for any software.
The meanings of these LEDs are shown in Table 6 .
Table6.LEDindicators
LED Label
Description
Power
Power on
<···>
Link established
Shows the strength of the signal across four LEDs
The signal strength indicator is a very useful tool for quickly checking the vehicle-to-vehicle signal
strength before attaching a PC to the RT-Range system.
Checking the communication link
It is possible to check that the communication link is working and there are several ways to do this.
▪It should be possible to “ping” the IP address of the RT-XLAN. This can be pinged first on the
Ethernet side (i.e. without any wireless communication) and then on the remote side (i.e.
through one RT-XLAN to another).
▪If the RT-XLAN is working then packets from RT systems should be visible from any “node”.
NAVdisplay can be used to receive the packets.
▪The LED indicators on the RT-XLAN will provide a quick indication of a communication link and
the strength of the signal - as shown in Table 6.
These are loose and will drop off very easily. If they do, ensure they are back in place before doing
the panel back up and ensure that the screw holes are lined up accurately.
Once the panel is undone, the back of the WLAN unit can be seen. This is shown in Figure 11.
Remove the power jack plug. Cover the jack plug with insulation tape so that it does not short against
anything internally. Secure the jack plug with tape so that it cannot flap about inside the RT-Range
Hunter. The internal wireless LAN is now disabled.

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Revision history
Table7.Revisionhistory
Revision
Comments
131101
Initial version
140611
Revisions for RT-Range S and new cables
140911
Minor revisions to remove link errors
180222
WEEE update
191031
Revisions to suction cups and RT hardware references
210210
Updated branding throughout. Updated ‘Enginuity’ software reference to
‘NAVdisplay’.
220222
Added installation section for retaining strap

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Appendix
Disabling the RT-Range’s wireless LAN
It has not been necessary to disable the wireless LAN in the old style RT-Range cases in order to use
the RT-XLAN. However, there may be times when the internal wireless LAN will conflict with the RT-
XLAN. If this happens then the internal wireless LAN in the RT-Range should be disabled.
If the internal RT-Range wireless LAN is disabled then, as best practice, clearly label the outside of
the box to note that it has been disabled. It is very difficult to diagnose a problem with the wireless
LAN so clear marking is essential.
In order to disable the wireless LAN in the RT-Range it is necessary to disassemble it. The
instructions for disassembling both the RT-Range Hunter and the RT-Range Target are the same.
These instructions can also be used to enable the wireless LAN if the RT-XLAN is no longer being
used.
To remove the front panel from the RT-Range Hunter carefully undo the four screws on the front
panel. These usually require a 2 mm metric Allen (hex) key; some RT-Range systems have been
supplied with screws that require a 2.5 mm Allen key.
Figure11. RemovingthefrontpanelontheRT-RangeHunter
Do not remove the front panel completely; just raise it high enough to gain access to the internal
wireless LAN as shown in Figure 11. Be aware of the metal strengthening bars at the top and bottom;
these are loose and will drop off very easily. If they do, ensure they are back in place before doing the
panel back up and ensure that the screw holes are lined up accurately.
Once the panel is undone, the back of the WLAN unit can be seen. This is shown in Figure 11.
Remove the power jack plug. Cover the jack plug with insulation tape so that it does not short against
anything internally. Secure the jack plug with tape so that it cannot flap about inside the RT-Range
Hunter. The internal wireless LAN is now disabled.

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