Installing the System
MicronNav System
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© Tritech International Ltd.
Check for correct configuration of the GPS interface by selecting Utilities from the top menu
bar followed by GPS Diagnostic from the sub-menu to open the GPS Diagnostic window, if
the GPS installation has been successful the GPS data will be visible in the window. If no
data is displayed re-check the Com Port baud rate settings and confirm the GPS receiver
is switched on.
3.2.7. Connecting optional third party High Accuracy Heading/Pitch/Roll
MRU Sensors
The USBL Dunking Transducer integral Magnetic Heading and Pitch/Roll sensor that enables
the MicronNav application to make corrections to world axis is particularly effective when
operating from a non-magnetic mobile platform/vessel or fixed dockside, however when
operating from a steel hull vessel the integral sensor will be affected by magnetic interference
from the vessel and it is recommended in this type of installation that an external ships
Compass & Motion Reference Unit (MRU) is used to provide the Heading and Pitch/Roll
information.
The other occasion when an external Compass & MRU might be considered is if a greater
degree of bearing accuracy is required from the system.
The external Compass & MRU can be connected to any of the free Serial interface connectors
available on the MicronNav100 Interface Hub (see Section 3.1.6, “Electrical Connection to
the Surface MicronNav100 Interface Hub” for serial port pin out details).
The Compass and Attitude data will sometimes be supplied from separate devices in which
case it will be necessary to use two serial ports.
Note
It is possible to use an External (Ship) Heading with the USBL Dunking
Transducer Pitch/Roll. Or, External (Ship) Heading/Pitch/Roll can be used
instead of USBL Heading/Pitch/Roll.
Seanet Pro will
auto detect
the incoming data string from the external
device, no data string setup is required (although the COM port will require to be
configured to accept the data connection as detailed below).
Heading/Pitch/Roll from a single external device
To configure the system to accept the heading & pitch/roll data from a single external device
switch on the power supply to the MicronNav100 Interface Hub and click the
Seanet Setup
icon on the desktop to display the device list, select Utilities from the top menu bar followed
by Com Setup from the sub-menu to open the
Channel Setup
page and disable the integral
sensor by un-checking Enabled check box for SeaHubE.
Configure the Compass entry for the correct COM port used for the external device input
and click the check box to enable, check the baud rate matches that of the external device