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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.

Summary of Contents for GNX 21

Page 1: ...GNX 20 21 Owner s Manual February 2014 190 01659 00_0B Printed in Taiwan...

Page 2: ...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...

Page 3: ...gh 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 Netw...

Page 4: ......

Page 5: ...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...

Page 6: ...ime format time zone and daylight savings time for your location SYSTEM INFORMATION Displays software information FACTORY DEFAULT Resets the device to factory defaults Selecting the Heading Type 1 Sel...

Page 7: ...V The altitude of your current location above or below sea level ERR The precision of the current position when used with GPS GWD The direction of the wind relative to the ground referenced from the n...

Page 8: ...H heading type 2 I instruments 1 adding pages 2 configuration 1 removing pages 2 N NMEA 0183 3 NMEA 2000 2 P pages 1 position format 2 product registration 3 profiles 1 restoring 1 selecting 1 R race...

Page 9: ......

Page 10: ...00800 4412 454 44 2380 662 915 35 1214 447 460 386 4 27 92 500 0861 GARMIN 427 646 27 0 11 251 9999 34 93 275 44 97 49 0 180 6 427646 20 ct Anruf a d deutschen Festnetz Mobilfunk max 60 ct Anruf 46 7...

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