Northstar
EXPLORER 550/550i
Installation and Operation Manual
11
2-4 Backlight and night mode
To go to the Backlight display, press
briefly.
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.
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.
The MOB feature saves the boat’s position and
then navigates back to this point.
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).
2-5 Man overboard (MOB)
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.
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.
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.
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).
MOB will not work if the EXPLORER does not
have a GPS fix.
!
WARNING
This might result in a sudden and dangerous
turn.
!
WARNING
