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Garmin GPSMAP 820xs Manual

32
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Previous page
1/46
Next page
2
Select
Tides or Currents.
3
Select
Nearby Stations.
4
Select a station.
Viewing Almanac Information from the Navigation
Chart
1
From a chart or 3D chart view, select a location.
2
Select
Information.
3
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.
1
Select Nav Info > Other Vessels > DSC List
> Add
Contact
.
2
Enter the Maritime Mobile Service Identity (MMSI) of the
vessel.
3
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
information was sent with the distress call, that information is
also available and recorded with the call.
designates a distress call in the DSC list and marks the
position of the vessel on the Navigation chart at the time of the
DSC distress call.
Navigating to a Vessel in Distress
designates a distress call in the DSC list and marks the
position of a vessel on the Navigation chart at the time of the
DSC distress call.
1
Select Nav Info > Other Vessels > DSC List.
2
Select a position-report call.
3
Select
Navigate To.
4
Select
Go To or Route To.
Man-Overboard Distress Calls Initiated from a VHF
Radio
When the chartplotter is connected to a compatible VHF radio
with NMEA 2000
, and you initiate a man-overboard DSC
distress call from the radio, the chartplotter shows the man-
overboard screen and prompts you to navigate to the man-
overboard point. If you have a compatible autopilot system
connected to the network, the chartplotter prompts you to start a
Williamson’s turn to the man-overboard point.
If you cancel the man-overboard distress call on the radio, the
chartplotter screen prompting you to activate navigation to the
man-overboard location disappears.
Man-Overboard and SOS Distress Calls Initiated from
the Chartplotter
When your chartplotter is connected to a Garmin
NMEA 2000
compatible radio and you mark an SOS or man-overboard
location, the radio shows the Distress Call page so you can
quickly initiate a distress call.
For information on placing distress calls from your radio, see the
VHF radio owner’s manual. For information about marking an
MOB or SOS location, see
Marking and Starting Navigation to
an MOB Location.
Position Tracking
When you connect the chartplotter to a VHF radio using NMEA
0183, you can track vessels that send position reports.
This feature is also available with NMEA 2000, when the vessel
sends the correct PGN data (PGN 129808; DSC Call
Information).
Every position report call received is logged in the DSC list
(
DSC List
).
Viewing a Position Report
1
Select Nav Info
> Other Vessels > DSC List
.
2
Select a position-report call.
3
Select an option:
• To switch to position report details, select .
• To switch to a Navigation chart marking the location,
select .
• To switch to a Navigation chart marking the location,
select Next Page.
• To view the position report details, select Previous Page
.
Navigating to a Tracked Vessel
1
Select Nav Info >
Other Vessels > DSC List
.
2
Select a position-report call.
3
Select
Navigate To.
4
Select
Go To or Route To.
Creating a Waypoint at the Position of a Tracked
Vessel
1
Select Nav Info > Other Vessels > DSC List.
2
Select a position-report call.
26 Digital Selective Calling
… 32 …


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