Detailed instructions for use are in the User's Guide.
[. . . ] GPS 100
PERSONAL NAVIGATORTM OWNER'S MANUAL
© 1992 GARMIN, 9875 Widmer Road, Lenexa, KS 66215 Printed in Taiwan. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose without the express written permission of GARMIN. GARMIN reserves the right to change or improve their products and to make changes in the content without obligation to notify any person or organization of such changes or improvements. A
GARMIN thanks you for selecting the industry's first high performance, full featured Personal NavigatorTM. [. . . ] Use the cyclic field to select estimated time enroute (ETE) or estimated time of arrival (ETA). To perform trip planning for a programmed route. . .
Use the CLR key to select the desired route as illustrated below. (The waypoint/route selection field will cycle through all programmed routes containing 2 or more waypoints, i. e. , RT0 to RT9. ) Total/Leg Selection
The first and last waypoints, total distance, and ETA/ETE information will be displayed for the entire route, as indicated by "TTL". To display the distance, bearing, and ETA/ETE information for each individual leg, use the CLR key to change from "TTL" to the desired leg. (The leg field will cycle through every programmed leg, i. e. , LG1 to LG8, and the route total, TTL. )
9. 2 FUEL PLANNING
Waypoint/Route Selection From Waypoint To Waypoint
Speed Fuel Flow
Time Fuel Required
FUEL PLANNING PAGE The Fuel Planning Page allows you to calculate fuel requirements for any route you have programmed or between any two waypoints. To calculate the fuel requirements between two waypoints. . .
Use the CLR key to select "WPT" on line 1. You may enter a different speed to calculate time and fuel requirements. Enter the fuel flow in units per hour (e. g. , gallons per hour. )
The GPS 100 will calculate fuel requirements in the corresponding units (e. g. , gallons) required to go from point 1 to point 2. Use the cyclic field to select estimated time enroute (ETE) or estimated time of arrival (ETA). You may calculate the fuel required for a programmed route in a manner similar to the trip planning described in Section 9. 1. 9. 3 DENSITY ALTITUDE/TAS (Aviation Feature)
Indicated Altitude Altimeter Setting Calibrated Airspeed Total Air Temperature
DENSITY ALTITUDE/TAS PAGE The Density Altitude/TAS function will help you calculate critical aircraft performance data. If you do not know your calibrated
airspeed, use indicated airspeed instead. TAT is the temperature of the air including the heating effect caused by speed (the temperature read on a standard outside air temperature gauge found on most piston aircraft is TAT). The GPS 100 will display the resulting density altitude and true airspeed.
The TAS computed on this page will automatically become the default value used in the wind aloft calculations described in the following section. 9. 4 WIND ALOFT (Aviation Feature)
Heading True Airspeed Wind Direction (from) Head/Tail Wind Wind Speed
WIND ALOFT PAGE The Wind Aloft Page allows you to calculate the direction and speed of the wind. If you have calculated TAS on the Density Altitude/TAS Page, it will be offered as the default. Enter the TAS (optional if you have computed TAS on the Density Altitude/TAS Page). The GPS 100 will display the wind direction, speed, and the head/tail wind you are encountering.
9. 5 VERTICAL NAVIGATION (Aviation Feature)
VNAV PLANNING PAGE Pilots will find the VNAV function useful for calculating vertical speed requirements. In order to use the VNAV feature, the aircraft speed (or speed entered in simulator mode), must be greater than 65 knots. Enter the offset distance from the waypoint at which you will reach your final altitude. Use the CLR key to select "BEFORE" if the offset is before the waypoint, select "AFTER" if the offset is beyond the waypoint. The GPS 100 will display the required vertical speed.
To activate the VNAV function. . . [. . . ] This information is processed at the master control station for determination of orbital data which is then uploaded to the satellites. A typical GPS receiver consists of an antenna, signal processing electronics, and processor. The primary function of a receiver is to acquire signals, recover orbital data, make range and Doppler measurements, and process this information in real-time to obtain the user position, velocity and time. A. 2 COVERAGE AND ACCURACY As with Loran-C, the actual accuracy of GPS depends in part on the geometric relationship between the transmitters (i. e. [. . . ]