Navman TRACKFISH 6600 Installation And Operation Manual page 51

and longitude coordinates of objects on the
TRACKFISH chart display 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 TRACKFISH map
datum to match the datum of the paper chart.
Then, the latitude and longitude coordinates
of objects displayed on the TRACKFISH 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 The TRACKFISH asks if you want to
apply the datum offset to latitude and
longitude coordinates sent on the NMEA
output. The options are:
Yes: Latitude and longitude coordinates
displayed on any NMEA repeaters match
the coordinates on the TRACKFISH.
However, latitude and longitude
coordinates broadcast on any NMEA
VHF transmitter will be slightly offset from
coordinates on a WGS 84 chart.
No: Latitude and longitude coordinates
displayed on any NMEA repeater
do not match the coordinates on the
TRACKFISH. Latitude and longitude
coordinates broadcast on any NMEA
VHF transmitter will be the same as the
coordinates on a WGS 84 chart.
Warning: When you change to a
chart with a different datum, change the
TRACKER map datum again.
Map shift
Some charts have consistent position errors.
To correct this, apply a map shift. After a
map shift:
The positions of cartographic features
(such as land, rocks, buoys and depth
contours) move on the TRACKFISH chart
display to where they should be.
The positions of the boat, waypoints,
tracks, and lines of latitude and longitude
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on the TRACKFISH chart display remain
unchanged.
Warning: Map shift is for eliminating
minor offsets. It should not be used if the
correct datum is available. Use map shift
with caution: incorrect application will
cause incorrect boat positions.
Applying a map shift
1 Move the boat to a known point on the
chart, for example a marina berth.
2 In the Chart setup menu, select
Map shift.
3 Move the cursor to the position on the
chart where the boat actually is.
4 Press ENTER to set the new map shift.
The boat will now be displayed at its
actual location.
Clearing the map shift
Clearing the map shift removes any map
shift from the cartographic features on the
TRACKFISH chart display.
1 In the Chart setup menu, select
Map shift.
2 Press MENU and select Clear.
Waypoints
Controls how waypoints are displayed on the
chart. The options are:
Hide all: No waypoints are
displayed (except for waypoints on any
selected route).
Show all: All waypoints are displayed.
Selected: Waypoints with their display
option set to Icon or I+N (Icon and Name)
are displayed (see section 5).
Chart display options
The other chart setup options allow an extensive
range of chart card features to be shown.
Confi gure the most useful display format.
Note:
Bathymetric Lines and soundings
Chart cards contain a large amount of spot
sounding and depth contour data. This can be
selectively displayed by turning Bathymetric
Lines and Spot Soundings on, then selecting
the range to display with Bath and Sndgs Min
and Max.
NAVMAN
TRACKFISH 6600 Installation and Operation Manual