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OWNERÕS MANUAL
& REFERENCE
ACTV STBY GNC 250
CLR ENT
CRSR
SQ NRST RTE WPT NAV MSG
TM
GNC 250
Õ
Pilot s Guide
®
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250 real 7/14/98 9:31 AM Page i INTRODUCTION Foreword Software Version 2.06 or above © 1995 GARMIN International 9875 Widmer Road, Lenexa, KS 66215, USA Romsey House, Station Approach Romsey, Hampshire, UK S051 8DU GARMIN™, GNC 250™, Spell’N’Find™, AutoLocate™, MultiTrac8™, GPSCOM™ All rights reserved. No part of this manual may be reproduced or transmitted in any and AutoStore™ are trademarks of GARMIN form or by any means, electronic or mechanical, including photocopying and record- and m
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250 real 7/14/98 9:31 AM Page ii INTRODUCTION Cautions CAUTION The Global Positioning System is operated by the United States government, which is solely responsible for its accuracy and maintenance. The system is subject to changes which could affect the accuracy and performance of all GPS equipment. Although the GARMIN GNC 250 is a precision electronic NAVigation AID (NAVAID), any NAVAID can be misused or misinterpreted and therefore become unsafe. NOTE: This device complies with Part 15 of
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250 real 7/14/98 9:31 AM Page iii INTRODUCTION Accessories and Accessories & Packing List Packing List Congratulations on choosing the finest, most advanced panel mount VFR GPSCOM available. The GNC 250 represents GARMIN’s commitment to provide an accurate, easy-to-use GPS for all of your aviation needs. Before installing and getting started with your unit, please check to see that your package includes the following items. If any parts are missing or damaged, please see your GARMIN dealer
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250 real 7/14/98 9:31 AM Page iv INTRODUCTION Warranty Every GARMIN GPS is built to exacting standards to provide years of trouble-free service. GARMIN warrants this product to be free from defects in materials and workmanship for one year from the date of purchase. GARMIN International, Inc. will at its sole option, repair or replace any components which fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts or labor. The customer is, how- To obtai
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250 real 7/14/98 9:31 AM Page v INTRODUCTION PART ONE: INTRODUCTION Table of Contents Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii Accessories/Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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250 real 7/14/98 9:31 AM Page vi INTRODUCTION Section 6: Messages and Unit Settings ( M key) . . . . . . . . . . . . . . . . . .71 Table of Contents ® Appendix A: NavData and User Data Card Use . . . . . . . . . . . . . . . . .81 Appendix B: Installation and Maintenance of the GNC 250 . . . . . . . . . .83 Appendix C: Simulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84 Appendix D: GNC 250 Abbreviations and Messages . . . . . . . . . . . . . . .86 Appendix E: Spe
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250 real 7/14/98 9:31 AM Page vii INTRODUCTION Key and Knob Key and Knob Functions Functions The power/volume knob controls unit power and radio volume. B The squelch button activates automatic squelch control. Q The direct-to key performs an instant direct-to, allows you to enter a D waypoint, and sets a direct course to the destination. The GNC 250 is designed to minimize key- The nearest key is used to obtain information on the 9 nearest airports, strokes when performing operations. There
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250 real 7/14/98 9:31 AM Page viii INTRODUCTION The message key is used to view system messages. The M key is also Key and Knob used to access the GNC 250’s unit settings. See Section 6 for more infor- M Functions mation on messages and unit settings. The transfer key flip-flops the active and standby frequencies. @ The clear key is used to erase information or cancel an entry. \ The enter key is used to approve an operation or complete data entry. This manual will describe entering data usin
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250 real 7/14/98 9:31 AM Page 1 TAKEOFF TOUR The GARMIN GNC 250 is a powerful navigational tool that provides pilots with accurate navi- gational data and communication capability, along with a host of database information at your fin- Power On gertips. The Takeoff Tour is designed to familiarize you with the operation of the GNC 250, including powering up the unit, changing frequencies, entering data and performing a simple direct-to, and a limited introduction to the ‘Nearest’ functions. In
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250 real 7/14/98 9:31 AM Page 2 TAKEOFF TOUR Once the database has been acknowledged, the satellite status page will appear, Acquiring Satellites and the GNC 250 will begin to collect satellite information. An ‘Acquiring’ status will be displayed on the Satellite Status page, and the signal values on the bottom line of the page will begin displaying numeric values. This is a good indication that you are receiving signals, and satellite lock will occur. Following the first-time use of your GNC
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250 real 7/14/98 9:31 AM Page 3 TAKEOFF TOUR While the GNC 250 is acquiring a position, let’s take a minute to dial in the active and standby frequencies you’ll be using for the first phase of your flight. The GNC Selecting Comm Frequencies 250’s display can be broken down into two separate ‘windows’, the comm window (the top line of the display) and the GPS window (the bottom three lines of the display). Comm Window Standby Active { } GPS Window } { The C key is used to activate the cursor i
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250 real 7/14/98 9:31 AM Page 4 TAKEOFF TOUR After the GNC 250 acquires satellites and computes a position, the position page will appear automatically, and you’ll be informed with a ‘Ready for navigation’ message on the message page. Position Page Altitude, MSA or ESA Position (lat/lon) Reference Waypoint Field The position page displays your present latitude and longitude, altitude and a reference way- point field. The altitude and reference waypoint fields are also selectable (see Section
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250 real 7/14/98 9:31 AM Page 5 TAKEOFF TOUR The GNC 250 uses direct point-to-point navigation to guide you from takeoff to touchdown in the VFR environment. Once a destination is selected, the unit will pro- Direct-To Navigation vide speed, course and distance data based upon a direct course from your present position to your destination. A destination can be selected from any page with the direct-to (D) key. To select a direct-to destination: 1. Press the D key. The CDI page will appear with
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250 real 7/14/98 9:31 AM Page 6 REFERENCE TAKEOFF TOUR In addition to the destination field and graphical CDI, the GNC 250 CDI page fea- Nearest Airport Info & tures four selectable fields for various navigation data so that the page may be config- CDI & NAVCOM Pages Navigation Diagram ured to your own preferences (see Section 1 for more information). The default set- tings for the CDI page are: • Ground Speed (gs)— Your present speed over the ground in knots • Distance (dis)— The distance to
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250 real 7/14/98 9:31 AM Page 7 TAKEOFF TOUR Once a direct-to is activated, the CDI page will provide navigation to the destina- Cancelling a Direct-To tion until the direct-to is cancelled or another direct-to destination is activated. Nearest Waypoints To cancel a direct-to from the CDI page: 1. Press the C key twice to activate the cursor in the destination field. 2. Press \. 3. Press E. The GNC 250’s NRST key provides the nine nearest airports, VORs, NDBs, inter- sections and user waypoint
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250 real 7/14/98 9:31 AM Page 8 REFERENCE TAKEOFF TOUR Once the nearest airport (or any other nearest waypoint) page is displayed, the Nearest Airports Satellite Acquisition selected waypoint can be quickly reviewed or selected as a direct-to destination. Shutting Down To review the selected waypoint from the nearest waypoint list: 1. Press C twice to activate the waypoint field. 2. Press E to display the waypoint identification page. 3. Rotate O to view any additional waypoint information ava
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250 real 7/14/98 9:31 AM Page 9 REFERENCE SECTION NAV KEY NAV key overview Section 1 Overview 1 Navigation Key The GNC 250 features six navigation pages to provide various position, course, speed, status and planning information. The pages may be viewed by pressing the NAV key and rotating the outer knob, or by pressing the NAV key repeatedly. NAVCOM page CDI page Position page Remember! The NAV pages will only display information AFTER the position and navigational information has been calcul
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250 real 7/14/98 9:31 AM Page 10 REFERENCE SECTION NAV KEY The GNC 250’s CDI page provides you with the important information needed to Position Page navigate directly to your destination. The destination field, located at the bottom left CDI Page 1 of the page, displays the current destination waypoint or active route leg being navi- gated. If no direct-to destination or route is being navigated, the destination field will remain blank. Ground Speed Messages or CDI Direction Distance field fi
