Garmin GNX 21 Owner's Manual - Page 5

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Also for Garmin GNX 21: Owner's Manual (10 pages), Installation Instructions (4 pages), Installation Instructions (4 pages), Installation Instructions (4 pages)

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Introduction

See the Important Safety and Product Information guide in the

product box for product warnings and other important

information.

Device Overview

NOTE: Certain functions are available only when the

appropriate sensors are connected to the device.

The marine instrument allows you to view data sources from

sensors through a NMEA

The instrument can also receive data from Nexus

and sensors using a GND

™

Select to return to the previous menu or to the instrument

page.

Select to view the menu for an instrument page.

Select to scroll through instrument pages and menus.

Select to view the display settings.

Select twice to view the backlight settings.

Hold to view the power-off settings.

Using the Race Timer

You can use the race timer to count down to a race, and then

measure the duration of the race. You can add the race timer as

a data field on a page.

TIP: To quickly open the race timer screen, hold

page.

From a page with the race timer active, select

CONFIGURE DATA FIELDS > RACE TIMER SETTINGS.

Select an option:

• When the device is in prerace mode and is stopped or

running, select RESET, START, or SETUP.

• When the device is in prerace mode and is running, sync

the timer to the next minute up or the next minute down, or

select STOP.

• When the device is in race mode and the race timer is

counting up, sync the timer back to 0:00, or select STOP.

Profiles

Profiles are collections of instrument pages that can be

customized. Profiles can be made up of instrument pages that

display similar data, such as GPS speed information and GPS

course information.

Introduction

WARNING

0183 network.

instruments

10 device (sold separately).

from a main

During the initial setup, you can select a preset profile, or you

can create a custom profile. You can select a different profile at

any time.

POWERBOAT: This profile displays instruments useful when in

a powerboat. Available default instruments include GPS

speed information, GPS course information, depth, bearing to

waypoint, distance to the next waypoint, and water

temperature.

SAIL CRUISE: This profile displays instruments useful when

cruising in a sailboat. Available default instruments include

true wind speed, GPS speed information, GPS course

information, bearing to waypoint, distance to the next

waypoint, true wind angle, and depth.

SAIL RACE: This profile displays instruments useful when

racing in a sailboat. Available default instruments include

GPS speed information, true wind speed, true wind angle,

heading, bearing to waypoint, and distance to the next

waypoint.

CUSTOM: This profile allows you to customize the page to

display instruments useful to your specific boating needs.

The default page displays speed over ground information.

Selecting a Profile

Select

> SETUP > PROFILES.

Select a profile.

Restoring Profiles to their Default Settings

You can restore profiles to their factory default settings.

Select

> SETUP > PROFILES > RESET DEFAULTS.

Select CURRENT PROFILE or ALL PROFILES.

Instrument Pages

Cycling Through Instrument Pages

From the home page, select

Using Auto Scroll

You can use auto scroll to move through all of the instrument

pages automatically.

Select

Select SETUP > AUTO SCROLL.

Select the length of time the device displays each instrument

page.

NOTE: Setting the time to zero disables the auto scroll

feature.

Configuring the Data Fields

Data provided on an instrument page can be shown in various

ways depending upon the instrument page that is displayed.

Select

> CONFIGURE DATA FIELDS.

Configuring Graph Data Fields

Some instrument pages display graph data. You can configure

the data that displays on the graphs.

From the instrument page, select

FIELDS > GRAPH SETTINGS.

Select an option:

• To determine how long the graph data displays, select

GRAPH DURATION.

• To configure the scale of values displayed in the graph,

select GRAPH SCALE.

> CONFIGURE DATA