NAVMAN
TRACKER 5507/5607
Installation and Operation Manual
51
Rotation
The options for chart rotation are:
North up:
North is always at the top of
the chart window.
Track up:
The chart is rotated so that
the boat direction is to the top of the display.
This option is useful for navigating narrow
harbours or rivers. The 5507/5607 asks for a
course deviation; this is how much the boat
direction needs to change to make the chart
redraw.
Tip
: If the chart redraws too frequently,
increase the course deviation setting.
15-2 Setup > Chart
Press
twice, then select Chart:
Course up:
This option is only available
if the boat is navigating to a destination. The
chart is rotated so that the plotted course to
the destination is vertical.
Palette
Select the color scheme for the LCD display. The
options are:
Normal:
For viewing in normal conditions.
Sunlight:
Brighter colors, more visible in
sunlight.
Night:
Reversed colors for night, to
preserve night vision.
Map datum
5507/5607 GPS positions are based on a
worldwide reference (datum) known as WGS
84. Most paper charts are based on WGS 84.
However, some paper charts are based on other
datums In these cases, the latitude and longitude
coordinates of objects on the 5507/5607
chart window are different to the latitude and
longitude coordinates of these objects on the
paper chart. This applies to all objects, such as
the boat, waypoints, tracks, lines of latitude and
longitude and cartographic features such as land,
rocks, buoys and depth contours.
Use
Map datum
to select the 5507/5607 map
datum to match the datum of the paper chart.
Then, the latitude and longitude coordinates of
objects displayed on the 5507/5607 will change
to match the corresponding coordinates on the
paper chart.
Setting map datum
1 In the Chart setup menu, select
Map
datum.
2 Select the map datum for the paper chart you
are using.
3 If you select a datum other than WGS 84 the
5507/5607 asks if you want to apply the NMEA
datum offset (see below).
CAUTION
!
!
CAUTION
DANGER
WARNING
When you change to a chart with a different
datum, change the 5507/5607 map datum
again.
