Raymarine Radar equipment Raychart Chartplotter RC530 PLUS - Manual (Page 165)

Chapter 7: Setting Up the System Defaults 7-7
Da
y/
N
ig
ht
Day/Night
This option allows you to change the display between day and night modes.
If you select NIGHT mode, a different color palette, more suited to night time
viewing is used.
Help
When Help is set to ON, a prompt appears 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 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.