Maretron DSM410, Руководство пользователя

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Revision 1.7.2 Page 41

Default
– the title of the control is the same as the name of the parameter being displayed.

Label
– the label of the parameter. The label is programmed into the remote device, and will be
transferred to the title when it is received from the remote device. This means that if the label
of the remote device is changed, the title of the control will be automatically updated to match
the new label.

Custom
– the title is entered by the user using the method described in section 3.3.4.
5.2.7 Units Menu
The Units Menu allows you to set the desired display units for the DSM410. The following sections
provide more detail on the individual unit settings.
Figure 28
– DSM410 Units Menu
5.2.7.1 Heading
This menu item allows you to select whether heading, course, and bearing information is displayed in
true or magnetic measurements. True heading can only be displayed if a variation is available on the
NMEA 2000
®
bus.
If the DSM410 is not showing heading or COG (i.e., no needle on compass rose or dashes for digital
displays), it’s probably a good indication that variation isn’t available on the network. The DSM410
can’t calculate true heading given magnetic heading from a compass if variation isn’t available.
Likewise, the DSM410
can’t calculate magnetic course given true course from a GPS if variation isn’t
available. You can setup a favorite screen to display variation, which will help you determine whether
or not you have a product on the network broadcasting variation information (Maretron’s GPS’s use
the World Magnetic Model to broadcast variation).
5.2.7.2 Depth
This menu item allows you to select the units to be used for the display of all depth-related
information. Units that may be selected are the following:

Meters

Fathoms

Feet