User manual GARMIN GPS 31

[. . . ] A PREFACE GARMIN thanks you for selecting the industry's first high performance, full featured Personal NavigatorTM. The GPS 100 represents our commitment to provide you with a portable navigation unit that is versatile, extremely accurate, and easy to use. We are confident you will enjoy using your unit for many years to come. The GPS 100's rugged construction and quality components offer the reliability demanded by the harshest operating environments. [. . . ] In addition, the time requirement will be displayed based on speed. 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. . . 9-2 · · Use the CLR key to select "WPT" on line 1. If you wish to use your present location, leave it blank. If you wish to use your present location, leave it blank. The speed field will display your present speed. You may enter a different speed to calculate time and fuel requirements. Use the CLR key to select the VNAV waypoint from the active route. The GPS 100 will display the required vertical speed. · · To activate the VNAV function. . . · Review the calculated vertical speed. If you wish to change the vertical speed, enter the desired vertical speed. Move the cursor over "OFF" and use the CLR key to select "ON". · When activated, this page will recommend the altitude (FROM altitude on line 1) and vertical speed (on line 3) required to complete the maneuver. NOTE: The altitude and climb rate displayed on the VNAV Planning Page are only 9-5 recommendations. Altitude and climb rate should be controlled by the pilot in command with due regard for airspeed and other aircraft performance limitations. You will be informed with the message "START ALTITUDE CHNG" when you are less than 15 seconds from the point at which the desired VNAV maneuver is to begin. You will be informed with the message "FINAL ALTITUDE ALERT" when the recommended altitude is within 1000 feet of the final altitude. The VNAV function will be cancelled automatically if the active route is changed in any way (e. g. , using the GOTO function or adding a waypoint. ) You will be informed with the message "VNAV CANCELLED", if this occurs. See Section 12. 4 for an application example using the VNAV function. 9-6 CHAPTER 10 DATE AND TIME FUNCTIONS The GPS 100 allows you to view current date and time, set alarm clocks and timers, and calculate sunrise/sunset times. [. . . ] The satellite signal is modulated by two high-rate, bi-phase, shifted key codes: a protected code (P-Code) and an unprotected code (C/A Code). The P-code is reserved for military use, and the C/A Code is intended for public access. This signal is extremely resistant to interference from weather, earth-based radio signals, and electronic equipment. Several ground stations are strategically located to monitor the satellites and accumulate ranging information from the navigation signals. [. . . ]