Comar Systems SLR-350N User manual

Installation
and
Quick Reference Guide
SLR-350N
AIS Receiver

Contents 2
Introduction 3
Contents of this box 4
Installing the SLR-350N receiver 4
Configuring the SLR-350N 5-8
Correct Operation 9
Fault Finding 9
Technical Specification 10
Warranty 11
Product Support
Comar Systems Limited
Unit 7, Medina Court
Arctic Road
Cowes
Isle of Wight, PO31 7XD
United Kingdom
Telephone: [phone] Fax: [phone]
E-mail: [e-mail]
Internet: www.comarsystems.com
Limited Warranty
Comar Systems Ltd warrants this product to be free from defects in
materials and manufacture for two years from the date of purchase.
Comar Systems Ltd will, at its sole option, repair or replace any
components that fail in normal use. Such repairs or replacement will
be made at no charge to the customer for parts and labour. The
customer is, however, responsible for any transportation costs
incurred in returning the unit to Comar Systems Ltd.
This warranty does not cover failures due to abuse, misuse, accident
or unauthorized alteration or repairs.
The above does not affect the statutory rights of the consumer.
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Configuring the Network
To install the Digi Device Discovery program on your PC run the
“Device Discovery” installation executable file in the “Device
Discovery” folder on the CD, and follow the set up wizard.
When the Device Discovery software is installed then select “Device
Discovery” from the installed applications.
If you have installed the SLR350N on your local network then
the device will be displayed as a Connect ME device
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Introduction
Background to AIS
AIS is an Automatic Identification System. For improved safety and
specifically for collision avoidance reasons, vessels need to know the
position, details and navigational intentions of other vessels within
VHF range.
IMO regulations covering most commercial vessels worldwide, have
been passed requiring that AIS transponders are fitted to all
commercial vessels over 300 grt on international voyages.
The transponders use VHF frequencies to
●Transmit details of their own vessel and
●Receive details from other vessels or navigation aids within
VHF range.
The SLR-350N
The SLR-350N is an AIS receive unit with built in Ethernet and USB
interfaces, designed specifically for coastal monitoring of AIS
equipped vessels.
Connected to an Ethernet Network and directly or via a Router to a
PC running compatible software, AIS data transmitted from ships
within range can be displayed on the screen giving a visual
interpretation of the traffic within VHF range. The unit can also be
mounted at a remote location and AIS data can be sent over the
Internet to a fixed IP address for use on a dedicated server.
A USB connection is also provided for local monitoring of AIS traffic
on a local PC.
Information transmitted from vessels fitted with AIS transponders
includes:
●Name of vessel ●Call Sign ●Type of vessel
●Speed (SOG) ●Course (COG) ●Heading
●Position ●Navigational status ●Vessel dimensions
●MMSI number ●IMO number ●Draft
●Rate of turn ●Size of vessel ●Status
●Destination ●ETA ●Cargo
Note: Not all the above information is necessarily transmitted by each vessel.
3

Contents of this Box
Before proceeding with the installation of the SLR-350N, please
check the content of the box, which should include:
The SLR-350N AIS receiver.
Universal 100-250VAC/12VDC Power Supply
Antenna connector adaptor
Installation and quick Reference Guide.
2m Network cable.
Installation CD.
Installing the SLR-350N Receiver
Mounting the SLR-350N receiver.
The SLR-350N receiver can be mounted to a suitable bulkhead or
shelf.
Hint: Select a location away from excessive heat sources, avoid high
levels of vibration and shock
Power.
Fit the universal power supply with the correct adaptor for your local
power. Plug the 2.1mm jack into the rear of the SLR300N and switch
on the power.
Hint: Alternatively the unit will accept 9-30VDC from an alternative source
capable of supplying 1Amp of current.. The centre pin is Positive.
Installing the antenna
A VHF antenna is not supplied as the type of antenna and cable
requirements differ from each installation. An antenna can be
acquired from a local marine electronics outlet.
Shore based reception is governed by local terrain, however an open
view to the sea with an antenna mounted in the clear at a height of
approximately 20 metres will achieve 25 miles plus, higher gain
antenna can be used on shore to further increase the range.
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Hint: The antenna connector type is BNC, 50 ohms.
Hint: The higher the antenna is located, the greater the range.
Hint: Mount the antenna with a relatively clear view of the horizon. Large
obstructions that might shade the antenna should be avoided.
Hint: A higher gain antenna will increase reception range..
Hint: Normally a omni- directional antenna is recommended however a
directional antenna such as a 3 element yagi can be used to increase range
in one particular direction.
Configuring the SLR-350N Receiver
Connection to a PC by USB.
The SLR350N can be monitored locally by connecting it via the USB
port to a PC. The drivers supplied on the CD create a virtual com
Port so that data can be viewed by the supplied Comar AIS Viewer
program or by any other AIS viewing program which requires a com
port connection.
Connection to a Network.
The SLR350N can be connected to a standard PC, Network Router or
Switch. Note if connecting directly to a PC you will need a crossover
cable.
When connected to a network the yellow LED on the network
connection should be on. If no yellow LED is shown then the unit has
not detected a link. The green LED will blink when data is
transmitted or received.
The CD included with the product contains the program Digi Device
Discovery utility program for setting up and configuring the unit.
5

Correct operation
Operation of the SLR-350N unit is fully automatic and only requires
power, VHF and data cable connection.
On powering up the unit
●The green light marked ON should illuminate.
●The Channel lights should come on brierfly then go off.
●The channel A and B lights should flash momentarily when
information from nearby transceivers is received.
Data is then output for visual or textual viewing on compatible
electronic charting systems or other systems or devices.
Fault finding
No power light is displayed
●Check the power supply and that the unit is connected
correctly to a 12 or 24 volt DC supply
●Check the polarity of the supply is correct. The center pin of
the 2.1mm jack is positive
Channel 1 and Channel 2 lights do not flash
●Check that a VHF antenna is fitted and correctly connected.
●Check that the antenna is correctly positioned – i.e. at a
suitable location to visibly ‘see’ vessels.
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DISCOVERY TROUBLESHOOTING TIPS
Firewalls: Check to make sure that any software firewalls (common
examples are Windows Firewall and most popular Anti-Virus
software) are disabled. These can block the discovery process. Also,
any physical firewall will almost certainly block the discovery process
as well.
Trouble discovering a Digi device using Windows XP with
Service Pack 2: You will need to make sure that the Windows
Firewall is disabled. By default it is enabled and will block the port
that the discovery software uses to discover Digi. To disable the
firewall go to Start->Settings->Control Panel->Windows Firewall.
Then click the off button to disable it.
Routers or Switches: Is there a router between the computer
running the discovery utility and the Digi device itself? Normally,
routers will block the discovery process. If possible remove them and
use a hub instead. If there is a switch in between this may or may
not be a problem. Occasionally they are configured to block the
discovery traffic. If unsure use a hub or a direct Ethernet cable
connection. Also, in case the port on your Router/Switch/Hub is bad,
try a different port as well.
Cabling: If nothing else works try using a direct crossover Ethernet
cable directly between the computer and the Digi device. Another
option is to try another Ethernet cable.
Ethernet LED: Check the Ethernet Link LED (Light Emitting Diode)
on the Digi device. Is it lit solid? If not, there is not a valid network
connection and it will not be possible to discover the device.
Network Adapters: Make sure the proper network adapter is
enabled. Also, ensure all other network adapters are disabled. If
more than one network adapter is enabled, this can cause the
discovery process to fail.
7

Configuring the Network settings
Device Discovery has the facility to quickly configure the unit
to your own network, select Configure Network Settings
this brings up a new window which will give you the choice of
letting Windows assign an IP address, or alternatively you can
give the unit a fixed IP address.
Alternatively you can select Open web interface which will
open a login dialog box, the default username is root and
the default password is dbps. Once entered it will connect
you directly to the internal web browser, and open it on its
home page as below:
However if you wish to use your favourite browser then
simply navigate to the IP address that has been assigned to
the unit, for example http://192.168.1.200
Configure the device to your requirements. Use the help
function F1, for assistance.
8
Technical specifications
SLR-350N is a compact dual channel synthesized VHF receiver
designed to receive and decode all transmissions from vessels fitted
with Class A or B AIS transceivers, Aids to Navigation, and SARTS.
Electrical
Power supply range: 9 - 30 Volts DC
Power consumption: 300mA @ 12VDC
Output
Baud rate: 38400 Baud (38.4Kb)
Format: ITU/ NMEA 0183
Output message: VDM
Receiver
Frequency: Channel A 161.975 MHz
Channel B 162.025 MHz
Channel spacing: 25KHz
Sensitivity: > -112dBm @ 20% MER
Demodulation: GMSK
Data Rate: 9600
Antenna Impedance: 50 ohms
Physical
Dimensions: L 130 x W 105 x H 46mm
Weight: 600g
Mounting: 4 mounting holes in end plates
Connectors: Antenna BNC
Ethernet port: RJ-45
USB Port Type B
Power: 2.1mm Phono plug
Designed to meet:
IEC 61993-2
CE Approval to EN 60945: EN 6100-6-1/2
FCC part 15
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