Bedienungsanleitung Navman Tracker 5500i (Seite 27 von 42) (Englisch)

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TRACKER 5100/5100i/5500/5500i Installation and Operation Manual

NAVMAN

13-2 Chart setup

Rotation

The options for chart rotation are:

North up: North is always at the top of the

chart display.

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 TRACKER 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.

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.

Projected course

The TRACKER can estimate the course after a given

time, based on the current speed and heading (see

section 3-4). The options are 2 minutes, 10 minutes,

30 minutes, 1 hour, 2 hours or Off.

CDI Scale

The CDI Scale is described in appendix C, CDI. The

options are 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, 4.0 and 10.0

distance units.

Plotter mode

Occasionally it is desirable to use a chart scale which

is not available on a chart card. Examples are:

To zoom in to a small scale to track very small

boat movements.

If there is no detailed chart for an area, for

example when crossing an ocean.

If Plotter mode is On, then if the chart zooms to a

scale which is not available, the TRACKER will enter

plotter mode and will only display the boat position

and track (if enabled). Chart and map information

will no longer be displayed and the display is white

with black crosshatch lines.

For normal use, turn Plotter mode to Off.

Map datum and map shift

Satellite derived positions on the TRACKER are

based on a worldwide reference (datum) known as

WGS84. Most paper charts are based on WGS84.

However, some paper charts are not based on

WGS84, which results in an offset between a position

on the TRACKER and the same position plotted on

the paper chart.

To match the TRACKER’s positions with a local chart

that is not based on WGS84:

Either select Map datum and select the datum

for the local chart. See appendix A for a list of

the available datums. WGS84 is the default

datum, and the datum most commonly used on

paper charts.

Or, if the correct datum is not available, retain

the WGS84 datum and apply a map shift (see

below).

Map shift

Map shift is a correction applied to the TRACKER’s

positions so that they match a chart’s positions.

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.

Set 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 ENT to set the new map shift. The boat

will now be displayed at its actual location.

Clear map shift

Clearing the map shift removes any map shift from

the TRACKER’s positions.

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.

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 9).

Chart display options

The other chart setup options allow an extensive

range of chart card features to be shown. Configure

the most useful display format.

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.

Attention Areas

Areas of importance, such as restricted anchorages

and shallow areas, are highlighted as Attention Areas.

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