DESIGNER’S HANDBOOK 4189350049C EN
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The magnetic heading of the ship, “Heading M1”, is not available on NMEA, but it is not needed in the actual
configuration, since the selected virtual indicator does not calculate and present geographic wind direction relative
to magnetic north.
The true heading, “Heading T1” is received from the navigation system connected to input port S2.1, provided by
talker HE and contained in sentence HDT.
When the magnetic variation, “Mag. Var. 1” parameter is available on NMEA, the XDi can calculate the magnetic
compass heading based on the true heading (Heading T1) or the other way around. If for example magnetic
heading was calculated based on the HDT data available, it will be shown as HE HDTcc (cc for calculated).
4.7.8.6 Finish the installation
The NMEA setup has now been verified and all data needed to show relative wind data and to calculate true wind
data is available, and all left to do is to press the return arrow until the wind indicator is shown on the display and
presents wind data.
4.7.9
Change NMEA setup
If you make changes in your installation or want to change to another data source, you can always access the
installation menu and make changes.
See the section “NMEA input” for details.
4.7.10
Skipping the wizard
If you have entered the setup wizard by accident and want to leave it again, please push OK on each step to jump
to the next stage without making any changes
and end with accepting “Finish Wizard”.
If you are not completely sure what you are doing, do not make changes using the wizard or
installation menu!
When you make a new selection in the wizard, all previous parameter adjustments made via
menu (or via CAN) will be reset to default settings. For example, if you select a new VI setup
profile for a virtual indicator, then manually entered zero adjustments of input data and selection
of a headline will be reset to the default value!
When you leave the menu, the NMEA settings will be stored and locked. This means
that only the selected sources will be used by the XDi.