Garmin GNX 20-21 User Manual

GNX™ 20/21

Owner’s Manual

February 2014 190-01659-00_0B Printed in Taiwan

All rights reserved. Under the copyright laws, this manual may not be copied, in whole or in part, without the written consent of Garmin. Garmin reserves the
right to change or improve its products and to make changes in the content of this manual without obligation to notify any person or organization of such
changes or improvements. Go to www.garmin.com for current updates and supplemental information concerning the use of this product.

Garmin® and the Garmin logo are trademarks of Garmin Ltd. or its subsidiaries, registered in the USA and other countries. GNX™ 20/21 is a trademark of
Garmin Ltd. or its subsidiaries. This trademark may not be used without the express permission of Garmin.

NMEA®, NMEA 2000®, and the NMEA 2000 logo are registered trademarks of the National Marine Electronics Association.

Table of Contents

Introduction.................................................................... 1

Device Configuration.................................................................. 1

Using the Race Timer................................................................ 1

Profiles............................................................................ 1

Selecting a Profile...................................................................... 1

Restoring Profiles to their Default Settings................................ 1

Instrument Pages........................................................... 1

Cycling Through Instrument Pages............................................ 1

Configuring the Data Fields....................................................... 1

Changing the Layout of Instrument Pages................................. 1

Adding an Instrument Page....................................................... 2

Removing an Instrument Page.................................................. 2

Device Configuration..................................................... 2

Resolving a Combined Network................................................. 2

System Settings......................................................................... 2

Display Settings......................................................................... 2

Viewing and Editing NMEA Settings.......................................... 2

NMEA 0183 Data Type Information........................................... 3

Registering Your Device............................................................ 3

Appendix.........................................................................3

Data Fields................................................................................. 3

Index................................................................................4

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