Raytheon HSB L755, Руководство пользователя

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Chapter 7: Setting Up the System Defaults 7-7
So
ft
K
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s
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 make a noise when you press
them.
MOB Data
This option controls whether MOB data is based on position 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 timeout set, menus and soft key labels remain displayed until you
clear them by pressing
ENTER
,
CLEAR
or the appropriate dedicated key.
If you set a value here, the menus and soft key labels will be cleared if a key has
not been pressed for the specified number of seconds.
This setting does not affect the default soft key labels, which are controlled by
the Soft Keys option (see above).
Units
You can set the units for speed, depth and temperature. The units you 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 radar, 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.