Backlight And Night Mode; Man Overboard (Mob); Alarms - NorthStar EXPLORER 550 Installation And Operation Manual

2-4 Backlight and night mode

To go to the Backlight display, press
When you have finished, press
Backlight
The display and keys are backlit. To change the
backlight level, select Backlight , then press
to dim or to brighten.
Tip: Press twice to give the brightest
screen, with maximum backlight and Night mode
off.

2-5 Man overboard (MOB)

The MOB feature saves the boat's position and
then navigates back to this point.
WARNING
!
MOB will not work if the EXPLORER does not
have a GPS fix.
1 Press .
The EXPLORER stores the boat's position as a
waypoint called MOB.
2 The EXPLORER changes to the chart display,
with the MOB waypoint at the centre of the
chart.
The chart zooms in for accurate navigation.
If the chart can not show the required small
scale, the EXPLORER changes to plotter mode
(a white display with crosshatching and no
chart details, see section 14-2).
3 The EXPLORER sets the MOB waypoint to be
the destination to navigate to.
If the NMEA output (autopilot) is off (see
section 14-9) use the EXPLORER to manually
navigate to the destination MOB waypoint
(see sections 3-1-1 and 3-1-2).
Tip: The MOB waypoint remains on the chart after the MOB has been cancelled. To delete the MOB
waypoint, see section 5-2-5.

2-6 Alarms

When the EXPLORER detects an alarm condition,
it displays a warning message on the display, the
internal beeper sounds and any external beepers
or lights operate.
briefly.
.
Northstar EXPLORER 550/550i Installation and Operation Manual
Night mode
Night mode sets the palette for all displays.
Normal palette, for daytime
A palette optimised for night time.
To change mode, select Night mode, then press
. To change only the chart palette, see section
14-2.
If the NMEA output (autopilot) is on,
the EXPLORER asks if the autopilot is active.
Select:
No: Use the EXPLORER to manually navigate to
the destination MOB waypoint (see sections
3-1-1 and 3-1-2).
Yes: The EXPLORER asks if the boat is to go to
the MOB waypoint.
Select:
Yes: to immediately start navigating to the
MOB waypoint.
WARNING
!
This might result in a sudden and dangerous
turn.
No: disengage the autopilot; then use
the EXPLORER to manually navigate to the
destination MOB waypoint (see sections 3-1-1
and 3-1-2).
To cancel MOB or set another MOB
1 Press again to display a menu.
2 Select an option from the menu.
Press to clear the alarm. The alarm will
sound again if the alarm condition occurs again.
The EXPLORER has user settable alarms plus an
alarm for loss of GPS fix (see section 14-7).
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