Setting up the input from a navigation system (GPS)
Accurate and reliable information from the vessel’s navigation systems are vital to the MS70 operation. The information provided by these systems are used by the MS70 software. Navigation data are also included in the raw data export formats. In order to read navigational data (position, speed, distance and heading) from an external sensor, you must choose which interface port to use, and then which datagram(s) to read.
Prerequisites
This procedure assumes that:
•  The vessel is berthed or at sea.
•  You have a vacant interface port on your Processor Unit.
•  You are familiar with NMEA and other relevant datagram formats.
•  You know how to set up the parameters for serial and local area network (LAN) communication.
You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electronic and electromechanical tasks, such as screwdrivers, pliers, spanners, a cable stripper etc. Each tool must be provided in various sizes. We recommend that all tools are demagnetized to protect your equipment.
Context
Most global positioning system (GPS) receivers provide NMEA 0183 datagrams containing geographical latitude and longitude information, as well as current speed and sailed distance. Some GPS systems will also provide the current heading, but this information is normally taken from the gyro.
The communication parameters defined for NMEA 0183 are:
•  Baud rate: 4800 b/s
•  Data bits: 8
•  ParityNone
•  Stop bits: 1
Some instruments may offer other parameters and/or choices. You must always check the relevant documentation provided by the manufacturer.
The supported datagram formats are listed in the Technical specifications chapter.
Procedure
1 Connect the navigation system to an available communication port on your Processor Unit.
This is described in the Cable layout and interconnections chapter.
•  Observe the applicable requirements related to cabling.
•  Ensure that the total length of the serial line cable does not exceed approximately 50 meters. If a longer cable is required, you may need to use buffer amplifiers.
•  If the Processor Unit is not fitted with a suitable serial line connector, use a USB-to-serial converter. Several types are commercially available.
Image
A Local connection on the Processor Unit
B Connection on remote device
For more information, refer to the end user documentation provided by the manufacturer.
2 Turn on the MS70, and set it to normal use.
a Open the Operation menu.
b Set Operation to Normal.
c Set Range to: 100 m.
d Set Ping to On.
e Set Ping Mode to Interval.
f Set Ping Interval to 1 s.
g Set TX Mode to Active
h Set TX Power to Maximum.
3 Open the Setup menu.
4 On the Setup menu, select Install.
Image
Observe that the Install submenu opens.
5 Select Navigation to open the dialog box
6 Open the Position page.
a Select the Ethernet or serial port you wish to use.
b Select Setup to define the communication parameters for the selected port.
c Select which NMEA sentence (datagram) you wish to use.
If you choose Auto, the MS70 will automatically choose among the incoming datagrams according to a predefined priority list.
d If applicable, specify a dedicated Talker ID.
7 Open the Speed page.
a Select the Ethernet or serial port you wish to use.
b Select Setup to define the communication parameters for the selected port.
c Select which NMEA sentence (datagram) you wish to use.
If you choose Auto, the MS70 will automatically choose among the incoming datagrams according to a predefined priority list.
d If you do not have any information from a speed sensor, or if you wish to enter the vessel's speed manually, select Manual speed.
When enabled, set the vessel speed manually using the Speed spin box.
8 Open the Distance page.
a Choose from which source you wish to retrieve or calculate the distance information.
b Select the Ethernet or serial port you wish to use.
c Select Setup to define the communication parameters for the selected port.
d Select which NMEA sentence (datagram) you wish to use.
If you choose Auto, the MS70 will automatically choose among the incoming datagrams according to a predefined priority list.
e If you wish to define the current vessel distance manually, use the Distance [nmi] spin box.
This option is not available for all Source choices.
9 Open the Heading page.
a Select the Ethernet or serial port you wish to use.
b Select Setup to define the communication parameters for the selected port.
c Select which NMEA sentence (datagram) you wish to use.
If you choose Auto, the MS70 will automatically choose among the incoming datagrams according to a predefined priority list.
d If applicable, specify a dedicated Talker ID.
10 Select OK to save the chosen settings and close the dialog box.
11 Verify that the input line is functional.
a Open the Setup menu.
b On the Setup menu, select Install.
c Select I/O Setup to open the dialog box.
d Click on a communication line to select it.
e Select  Monitor to open the Port Monitor dialog box.
f Verify that the data flow on the input line (Rx Data text field) is operational.
g Select OK to close the Port Monitor dialog box.
h Select OK to close the I/O Setup dialog box.