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Chapter 4: Setting Up the GPS Plotter 4-5
Help
When Help is set to ON, a prompt appears in place of the status bar when
selecting a soft key or menu choice and when using the context-sensitive
cursor. The help message is cleared when an action is selected.
Soft Keys
When the Soft Keys option is set to ON, the default soft keys are displayed
if no other operation is in progress.
When the Soft Keys option is set to
OFF, the default soft keys are only
displayed when a soft key is pressed and they disappear if no operation is
performed for 10 seconds.
Key Beep
This option controls whether or not the keys sound when pressed.
Note: The alarms continue to sound.
MOB Data
This option controls whether MOB data is based on GPS data, or on dead
reckoning (
DR). Dead reckoning normally provides a better indication of
the course to an object in the water, on the assumption that your vessel
and the object are both subject to the same tide and wind effects.
Menu Timeout Period
With no time-out set, menus and soft key labels remain displayed until
you clear them by pressing
ENTER, CLEAR or the appropriate dedicated
key.
Units
You can set the units for speed, depth and temperature. The units set will
be used to display all data, including information received from other
instruments on the system. However, the distance units do not affect the
instrumented range of the display, which is always in nautical miles.
Variation Source
The variation value is the difference between True and Magnetic
direction data for heading or bearing values. The Variation Source option
provides soft keys for selecting Auto or Manual variation mode, displays
the current variation value for each and highlights the currently selected
mode.
81171_4.BOOK Page 5 Thursday, November 29, 2001 11:34 AM