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250xl manual 2 7/17/98 1:26 PM Page i
GNC 250XL
Pilot’s Guide and Reference
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250xl manual 2 7/17/98 1:26 PM Page ii
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250xl manual 2 7/17/98 1:26 PM Page i INTRODUCTION Foreword Software Version 2.01 or above © 1997 GARMIN Corporation 1200 East 151st Street, Olathe, Kansas 66062-3426, USA GARMIN (Europe) LTD, Unit 5, The Quadrangle, Abbey Park Industrial Estate, GARMIN, GNC 250XL, Spell’N’Find, AutoLocate, Romsey S051 9AQ, UK PhaseTrac12, GPSCOM and AutoStore are trademarks of GARMIN and may only be used Web Site Address: www.garmin.com with permission. All rights reserved. No part of this manual may be repr
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250xl manual 2 7/17/98 1:26 PM 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 250XL is a precision electronic NAVigation AID NOTE: This device complies with Part 15 of the FCC (NAVAID), any NAVAID can be misused or misinterpreted and therefore
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250xl manual 2 7/17/98 1:26 PM Page iii INTRODUCTION Accessories & Packing List Accessories and Packing List Congratulations on choosing the finest, most advanced panel mount VFR GPSCOM available. The GNC 250XL 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
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250xl manual 2 7/17/98 1:26 PM 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 To obtain warranty service, see your local dealer made at no charge to the cus
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250xl manual 2 7/17/98 1:26 PM Page v PART ONE: INTRODUCTION INTRODUCTION Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii Table of Contents Accessories/Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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250xl manual 2 7/17/98 1:26 PM Page vi Section 6: Messages and Unit Settings ( M key) . . . . . . . . . . . . . . . . . .75 INTRODUCTION ® Table of Contents Appendix A: NavData and User Data Card Use . . . . . . . . . . . . . . . . .87 Appendix B: Installation and Maintenance of the GNC 250XL . . . . . . . .89 Appendix C: Simulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90 Appendix D: GNC 250XL Messages and Abbreviations . . . . . . . . . . . . .92 Appendix E: S
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250xl manual 2 7/17/98 1:26 PM Page vii INTRODUCTION Key and Knob Functions Key and Knob The power/volume knob controls unit power and radio volume. Functions 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 250XL is designed to minimize The nearest key is used to obtain information on the 9 nearest airports, keystrokes when performing operations.
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250xl manual 2 7/17/98 1:26 PM Page viii The message key is used to view system messages. This key is also used to INTRODUCTION access the GNC 250XL’s unit settings. See Section 6 for more information M Key and Knob on messages and unit settings. Functions The transfer key flip-flops the active and standby frequencies. @ The clear key is used to erase information or cancel an entry. \ This manual will describe entering data using the K The enter key is used to approve an operation or complete
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250xl manual 2 7/17/98 1:26 PM Page 1 The GARMIN GNC 250XL is a powerful navigational tool that provides pilots with accurate navigational data and communication capability, along with a host of database information at your TAKEOFF TOUR fingertips. The Takeoff Tour is designed to familiarize you with the operation of the GNC 250XL, including powering up the unit, changing frequencies, entering data and performing a simple Power On direct-to, and a limited introduction to the ‘Nearest’ function
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250xl manual 2 7/17/98 1:26 PM Page 2 Once the database has been acknowledged, the satellite status page will appear, and the GNC 250XL will begin to collect satellite information. An ‘Acquiring’ status TAKEOFF TOUR 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 Acquiring Satellites are receiving signals and satellite lock will occur. Following the first-time use of yo
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250xl manual 2 7/17/98 1:26 PM Page 3 While the GNC 250XL 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 TAKEOFF TOUR GNC 250XL’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 Selecting Comm Frequencies the display). Comm Window Active Standby } { GPS Window { } The C key is used to activate the
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250xl manual 2 7/17/98 1:26 PM Page 4 After the GNC 250XL acquires satellites and computes a position, the position page will appear automatically, and you’ll be informed with ‘Ready for navigation’ on the message page. TAKEOFF TOUR Altitude, MSA or ESA Position Page 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 1
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250xl manual 2 7/17/98 1:26 PM Page 5 The GNC 250XL 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 TAKEOFF TOUR provide speed, course and distance data based upon a direct course from your present Direct-To position to your destination. A destination can be selected from any page with the Navigation D (direct-to) key. To select a direct-to destination: 1. Press the D key. The CDI page will appea
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250xl manual 2 7/17/98 1:26 PM Page 6 In addition to the destination field and graphical CDI, the GNC 250XL CDI page features four selectable fields for various navigation data so that the page may be con- TAKEOFF TOUR figured to your own preferences (see Section 1 for more information). The default set- tings for the CDI page are: CDI & Map Pages • Ground Speed (gs)— Your present speed over the ground in knots • Distance (dis)— The distance to your destination in nautical miles • Desired Trac
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250xl manual 2 7/17/98 1:26 PM Page 7 Airspace Boundaries TAKEOFF TOUR Airport Waypoint Map Page Present Position The map display occupies the right side of the display. Your present position is indi- cated by a plane symbol (in track up mode) or a position diamond (in other orienta- tion modes), with your route displayed as a solid line. Nearby airports, navaids and user waypoints may be depicted on the map; with unique identifying symbols for each waypoint type. Boundaries for special use a
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250xl manual 2 7/17/98 1:26 PM Page 8 The map display has 14 available ranges from 0.5 to 300 (nautical miles, statute miles or kilometers) representing the vertical height of the map. The map scale is con- TAKEOFF TOUR trolled by the inner knob (K), with the current scale displayed in the lower right Map Scales corner of the page. NAVCOM Page To select a map scale: 1. Rotate the K knob clockwise to increase the map scale and show a larger area. 2. Rotate the K knob counterclockwise to decrea
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250xl manual 2 7/17/98 1:26 PM Page 9 Once a direct-to is activated, the CDI page will provide navigation to the destina- tion until the direct-to is cancelled or another direct-to destination is activated. TAKEOFF TOUR To cancel a direct-to from the CDI page: Cancelling a Direct-To Nearest Waypoints 1. Press the C key twice to activate the cursor in the destination field. 2. Press \. 3. Press E. The GNC 250XL’s T key provides the nine nearest airports, VORs, NDBs, inter- sections, user waypoi
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250xl manual 2 7/17/98 1:26 PM Page 10 Once the nearest airport (or any other nearest waypoint) page is displayed, the selected waypoint can be quickly reviewed or selected as a direct-to destination. TAKEOFF TOUR Nearest Airports To review the selected waypoint from the nearest waypoint list: Shutting Down 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 available. 4. Press T to ret
