Handleiding Garmin GPSMAP 557 (pagina 32 van 48) (Engels)

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Select an option:

• To set the top of the wind gauge to a North heading,

select North Up.

• To rotate the gauge so the direction in which you are

moving is at the top, select Head Up.

Configuring the Heading Source of the Environment

Gauge

You can specify the source of the heading displayed on the

environment gauge. Magnetic heading is the heading data

received from a heading sensor, and GPS heading is calculated

by your chartplotter GPS (course over ground).

Select Gauges > Environment > Menu > Heading Source.

Select GPS Hdg or Magnetic.

Setting the Barometer Reference Time

You can specify the reference time used to calculate the

barometer trend. The trend is indicated in the barometer field.

Select Gauges > Environment > Menu > Pressure Ref.

Time.

Select an option.

Tide, Current, and Celestial Information

Tide Station Information

You can view information about a tide station for a specific date

and time, including the tide height, and when the next high and

low tides will occur. By default, the chartplotter shows tide

information for the most recently viewed tide station and for the

present date and time.

Select Nav Info > Tides & Currents > Tides.

Current Station Information

NOTE: Current station information is available with certain

detailed maps.

You can view information about a current station for a specific

date and time, including the current speed and level of the

current. By default, the chartplotter shows current information for

the most recently viewed current station and for the present date

and time.

Select Nav Info > Tides & Currents > Currents.

Celestial Information

You can view information about sunrise, sunset, moonrise,

moonset, moon phase, and the approximate sky view location of

the sun and moon. The center of the screen represents the sky

overhead, and the outermost rings represent the horizon. By

default, the chartplotter shows celestial information for the

present date and time.

Select Nav Info > Tides & Currents > Celestial.

Viewing Tide Station, Current Station, or Celestial

Information for a Different Date

Select Nav Info > Tides & Currents.

Select Tides, Currents, or Celestial.

Select an option.

• To view information for a different date, select Change

Date > Manual, and enter a date.

• To view information for today, select Change Date >

Current.

• If available, to view information for the day after the date

shown, select Next Day.

• If available, to view information for the day before the date

shown, select Previous Day.

Viewing Information for a Different Tide or Current

Station

Select Nav Info > Tides & Currents.

Select Tides or Currents.

Select Nearby Stations.

Select a station.

Viewing Almanac Information from the Navigation

Chart

From a chart or 3D chart view, select a location.

Select Information.

Select Tides, Currents, or Celestial.

Digital Selective Calling

Networked Chartplotter and VHF Radio

Functionality

If you have a NMEA 0183 VHF radio or a NMEA 2000 VHF

radio connected to your chartplotter, these features are enabled.

• The chartplotter can transfer your GPS position to your radio.

If your radio is capable, GPS position information is

transmitted with DSC calls.

• The chartplotter can receive digital selective calling (DSC)

distress and position information from the radio.

• The chartplotter can track the positions of vessels sending

position reports.

If you have a Garmin NMEA 2000 VHF radio connected to your

chartplotter, these features are also enabled.

• The chartplotter allows you to quickly set up and send

individual routine call details to your Garmin VHF radio.

• When you initiate a man-overboard distress call from your

radio, the chartplotter shows the man-overboard screen and

prompts you to navigate to the man-overboard point.

• When you initiate a man-overboard distress call from your

chartplotter, the radio shows the Distress Call page to initiate

a man-overboard distress call.

Turning On DSC

Select Settings > Other Vessels > DSC.

DSC List

The DSC list is a log of the most recent DSC calls and other

DSC contacts you have entered. The DSC list can contain up to

100 entries. The DSC list shows the most recent call from a

boat. If a second call is received from the same boat, it replaces

the first call in the call list.

Viewing the DSC List

Before you can view the DSC list, the chartplotter must be

connected to a VHF radio that supports DSC.

Select Nav Info > Other Vessels > DSC List.

Adding a DSC Contact

You can add a vessel to your DSC list. You can make calls to a

DSC contact from the chartplotter.

Select Nav Info > Other Vessels > DSC List > Add

Contact.

Enter the Maritime Mobile Service Identity (MMSI) of the

vessel.

Enter the name of the vessel.

Incoming Distress Calls

If your compatible chartplotter and VHF radio are connected

using NMEA 0183 or NMEA 2000, your chartplotter alerts you

when your VHF radio receives a DSC distress call. If position

26 Digital Selective Calling

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