27. Parameters Setup
27-2
(WT)
Parameter backup
User can make backup copy of parameters. See Chapter 17 for details.
Installation parameters
The ECDIS system parameters are set by the installation parameters.
Note: Access to the installation parameters requires a password. For details see the installation manual.
Navigation parameters
Parameters for your ship and routes. For more information about setting navigation parameters, see "Ship
parameters" and "Route parameters" on page 27-3.
Optimization parameters
This function is used to define parameters for speed and fuel consumption. For details, see section 27.1.6.
Print navigation parameters
Prints navigation parameters to default printer.
Print optimization parameters
Prints optimization parameters to default printer.
27.1.2 How to access the installation parameters
The installation parameters command is used to set installation parameters for the system. These parameters are
concerned with hardware configurations and set-up. They need only be set during installation and if sensor
configuration changes. Installation parameters are described in detail in the Installation Manual.
27.1.3 How to select datum
Datum is used to select between different models of the earth. It is essential that you use Datum in a consistent way.
See also section 26.5 "ECDIS and Datum".
If you use paper charts together with electronic chart material, it is recommended that you use the same datum as
your current paper chart to avoid misalignment between your electronic system and points taken or plotted on your
current paper chart.
Once you have selected a datum, all numerical latitude-longitude position values are presented in your selected
datum.
Note: If you use ARCS raster chart material, rasterized charts contain some rasterized position information. These
positions, like scales in the edges of ARCS charts, are true only if you have selected native datum of that ARCS
chart. Normally this is the natural situation, because you use ARCS together with matching official paper chart and
because you have selected as datum the datum of your matching official paper chart.
To select datum do the following:
1. Put the cursor on the datum indication at the upper right corner of the display.
2. Spin the scrollwheel to select appropriate datum then push the scrollwheel.
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