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Northstar Explorer 657 Installation and Operation Manual12
2-3 Backlight and night mode
To go to the Backlight display, press briefly.
Backlight
The display and keys are backlit. To change the
backlight level, highlight select Backlight, then
press to dim or to brighten.
When you have finished, press
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, highlight Night mode, then
press
or . To change only the chart
palette, see section 17-2.
The MOB feature saves the boat’s position and
then navigates back to this point.
2-4 Man overboard (MOB)
If the NMEA output (autopilot) is on, the
657 asks if the autopilot is active.
Select:
No: Use the 657 to manually navigate to the
destination MOB waypoint (see sections
3-1-1 and 3-1-2).
Yes: The 657 asks if the boat is to go to the
MOB waypoint.
Select:
Yes: to immediately start navigating to
the MOB waypoint.
This might result in a sudden and dangerous
turn.
!
WARNING
No: disengage the autopilot; then use
the 657 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.
!
WARNING
MOB will not work if the 657 does not have
a GPS fix.
1 Press
.
The 657 stores the boat’s position as a
waypoint called MOB.
2 The 657 changes to the chart window, with
the MOB waypoint at the center of the chart.
The chart zooms in for accurate navigation.
If the chart can not show the required small
scale, the 657 changes to plotter mode (a
white display with crosshatching and no
chart details, see section 17-2).
3 The 657 sets the MOB waypoint to be the
destination to navigate to.
If the NMEA output (autopilot) is off
(see section 17-11) use the 657 to manually
navigate to the destination MOB waypoint
(see sections 3-1-1 and 3-1-2).