Quick Start Guide for ST-NMEA (USB) V1.00
TEL + 44 1179 554474 www.digitalyacht.co.uk
1. Introduction
Congratulations on the purchase of your ST-NMEA (USB) Converter. This product is designed to allow SeaTalk data to
be displayed on a computer and for the computer to send navigational data back on to the SeaTalk network.
Although the USB interface is simple
“plug and play”, wiring the Converter to a SeaTalk network requires a level of
practical ability and electrical knowledge. If you are not comfortable with electrics/electronics and making wiring
connections, we recommend you have the converter installed by a professional installer/dealer.
Before operating the unit you should also familiarise yourself again with the user manual of the SeaTalk
equipment and Navigation Software that you will be using it with. Pay particular attention to the SeaTalk
network wiring, the Software’s Interfacing Menu options and any other settings that need to be
configured for correct operation.
2. Before you start
If you need to extend the USB cable of the ST-NMEA converter, please note that the maximum length of a standard USB
cable is 5m, so avoid extending the ST-NMEA USB cable beyond this length.
To install and test the ST-NMEA (USB) converter you will need:
•
Suitable tools and connectors to connect the ST-NMEA to the SeaTalk network
•
M3 or M4 screws or other fixings appropriate to the mounting location
•
Suitable Windows/Mac/LINUX PC with a spare USB port
•
The Digital Yacht Software and Drivers CD (supplied with the ST-NMEA)
•
Suitable Navigation software running on the Windows/Mac/LINUX PC that can read NMEA data
3. Installation
Before starting installation select a suitable location for the ST-NMEA. The unit is water resistant; however it should be
installed below deck in a dry location. When locating the unit you should consider:
•
Routing of SeaTalk and USB cables to the unit
•
Provision of sufficient space around the unit for comfortable cable routing.
•
Maintaining the compass safe distance of 0.5m
3.1
Connecting to SeaTalk Network
•
The ST-NMEA, has a three wire SeaTalk cable with bare ended wires, providing power and data to the unit. It
needs to be connected to your existing SeaTalk network but where it connects is specific to your installation.
•
The SeaTalk interface was originally developed by Autohelm in th
e early 1990’s and was included on pretty much
all Autohelm and Raymarine (and some Raytheon) products up until about 2012. This has resulted in lots of
different products, interfaces, cable assemblies, etc. being out in the market, making it impossible for this manual
to provide a definitive guide on connecting our ST-NMEA converter in every possible scenario.
•
In any SeaTalk network there may be a variety of devices including; instruments, an autopilot, Multi-Function
Display (MFD), etc. Most devices that can be fitted outside will have a proprietary SeaTalk connector of one type
or another, while most autopilot course computers and below deck devices will have screw or sprung terminals,
which generally are easier to connect to.
•
It is recommended that you spend some time studying your SeaTalk network, to decide the best location to
connect the ST-NMEA converter in to the network.
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