Manual Garmin GPSMAP 820xs (page 40 of 46) (English)

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Viewing a List of NMEA 2000 Network Devices

You can view the devices connected to the NMEA 2000

network.

Select Settings > Communications > NMEA 2000 Setup >

Device List.

Setting Alarms

Navigation Alarms

Select Settings

> Alarms > Navigation

Arrival: Sets an alarm to sound when you are within a specified

distance or time from a turn or a destination.

Anchor Drag: Sets an alarm to sound when you exceed a

specified drift distance while anchored.

Off Course: Sets an alarm to sound when you are off course by

a specified distance.

System Alarms

Alarm Clock: Sets an alarm clock.

Device Voltage: Sets an alarm to sound when the battery

reaches a specified low voltage.

GPS Accuracy: Sets an alarm to sound when the GPS location

accuracy falls outside the user-defined value.

Setting the Fuel Alarm

Before you can set a fuel level alarm, a compatible fuel flow

sensor must be connected to the

NMEA 2000 network.

You can set an alarm to sound when the total amount of

remaining onboard fuel reaches the level you specify.

Select Settings

> Alarms > Fuel > Fuel Alarm > On

Enter the remaining amount of fuel that triggers the alarm.

Setting Weather Alarms

Before you can set weather alarms, you must have a compatible

chartplotter connected to a weather device, such as a GXM

device, and have a valid weather subscription.

Select Settings > Alarms > Weather.

Turn on alarms for specific weather events.

Units Settings

Select

Settings > Units.

System Units: Sets the unit format for the device.

Variance: Sets the magnetic declination, the angle between

magnetic north and true north, for your present location.

North Reference: Sets the direction references used in

calculating heading information. True

sets geographic north

as the north reference. Grid sets grid north as the north

reference (000º). Magnetic sets the magnetic north as the

north reference.

Position Format: Sets the position format in which a given

location reading appears. Do not change this setting unless

you are using a map or chart that specifies a different

position format.

Map Datum: Sets the coordinate system on which the map is

structured. Do not change this setting unless you are using a

map or chart that specifies a different map datum.

Pressure Reference Time: Sets the reference time used to

calculate the barometer trend. The trend is indicated in the

barometer field.

Time Format: Sets a 12-hour, 24-hour, or UTC time format.

Time Zone: Sets the time zone, or allows automatic selection

based on GPS location.

Navigation Settings

NOTE:

Some settings and options require additional charts or

hardware.

Select

Settings

> Navigation

Route Labels: Sets the type of labels shown with route turns on

the map.

Auto Guidance: Sets the measurements for the Safe Depth,

Safe Height

, and Shoreline Distance, when you are using

some premium maps.

Turn Transition Activ.: Sets the turn transition to be calculated

based on time or distance.

Turn Transition Time: Sets how many minutes before the turn

that you transition to it as the next leg, when Time

is selected

for the Turn Transition Activ.. You can raise this value to help

improve the accuracy of the autopilot when navigating a route

or an Auto Guidance line with many frequent turns or at

higher speeds. For straighter routes or slower speeds,

lowering this value can improve autopilot accuracy.

Turn Transition Dist.: Sets how far before the turn that you

transition to it as the next leg, when Distance is selected for

the Turn Transition Activ.. You can raise this value to help

improve the accuracy of the autopilot when navigating a route

or an Auto Guidance line with many frequent turns or at

higher speeds. For straighter routes or slower speeds,

lowering this value can improve autopilot accuracy.

Route Start: Selects a starting point for route navigation.

Other Vessel Settings

When your compatible chartplotter is connected to an AIS

device or VHF radio, you can set up how other vessels are

displayed on the chartplotter.

Select

Settings

> Other Vessels

AIS: Enables and disables AIS signal reception.

DSC: Enables and disables digital selective calling (DSC).

AIS Alarm: Sets the collision alarm (Setting the Safe-Zone

Collision Alarm and Enabling AIS Transmission Test Alerts).

Restoring the Original Chartplotter Factory

Settings

NOTE: This will delete all settings information you have entered.

Select Settings

> System > System Information > Factory

Settings

Chartplotter Data Management

Copying Waypoints, Routes, and Tracks

from HomePort to a Chartplotter

Before you can copy data to the chartplotter, you must have the

latest version of the HomePort

software program loaded on your

computer and a memory card installed in the chartplotter.

Copy the data from HomePort to the prepared memory card.

For more information, see the HomePort help file.

Selecting a File Type for Third-Party

Waypoints and Routes

You can import and export waypoints and routes from third-party

devices.

Select Nav Info

> Manage Data > Data Transfer > File

Type

Select

GPX.

To transfer data with Garmin devices again, select the ADM file

type.

34 Chartplotter Data Management

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Garmin GPSMAP 820xs Manual

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