Instruction/ maintenance manual of the product GPS 20x Garmin
Go to page of 19
GPS 20x TECHNICAL SPECIFICATIONS Garmin International, Inc. 1200 E. 151 st Street Olathe, KS 66062 USA 190-00880-00 , Rev ision A January 2008 a.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page i © 2008 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 st Street, Olathe, Kansas 66062, U.S.A. Tel. 913/397.8200 or 800/800.1020 Fax 913/397. 8282 Garmin (Eur ope) Ltd.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page ii TABLE OF CONTENTS 1 Introduction .............................................................................................................................. 1 1.1 Cautions..............
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 1 1 INTRODUCTION 1.1 CAUTIONS CAUTION The GPS system is operated by the governm ent of the United States, which is s o lely responsible for its accuracy an d maintenance.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 2 1.2 LIMITED WARRANTY This Garmi n product is warra nted to be free from defects in materi als or workm anship for one year from the date of purchase. Within this peri od, Garmin will at its sole option, repair or replace any c omponents that fail in norm al use.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 3 1.3 OVERVIEW The GPS 20x includes an em bedded receiver a nd an antenn a. The GPS 20x tracks m ultiple satellites at a time while providing fast time-t o-first-fix na vigation u pdates once pe r second.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 4 1.5 TECHNICAL SPECIFICATIONS Specifications are subject to change without notice. 1.5.1 Physical Characteristics 1.5.1.1 Size 1.7 in. (4 2.8 mm ) long × 1.3 in. (32.4 m m) wide × 0 .5 in.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 5 1.5.3.4 Accuracy • GPS Standard Positioning Service (SPS) Position: < 15 meters, 95% typical Velocity: 0.1 knot RM S steady state • WAAS Position: < 3 meters, 95% typical Velocity: 0.
2 MECHANICAL CHARACTERISTICS 1.7 in. ( 42.8 mm ) 1.3 in. ( 32.4 m m ) Figure 1. GPS 20x Top Case Dimensions 1.7 in. (42.8 mm ) 0.5 in. (1 2 mm) Figure 2. GPS 20x Side View 0.5 in. ( 12 mm ) Figure 3. GPS 2 0x End View 190-00880-00 GPS 20x Technical Specificatio n s Rev.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 7 3 GPS 20x SOFTWARE INTERFACE The GPS 20x transmits using the Garmin USB interface . The Garmin USB interface is discussed in the Garmin Device Interface Specification found in the Garmin Device Interface SDK located on the Garmin Web site at: www.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 8 3.1.2 Transmitted Time The GPS senso r outputs Co ordinated Univ ersal Time (UTC ) date and ti me of day i n the transmi tted sentences. Before the initial position fix, the on-board clock provides the date and time of day.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 9 3.1.4 GPS DOP and Active Satellites (GSA) $GPGSA,<1>, <2>,<3>,<3>, <3>,<3> ,<3>, <3>,<3.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 10 3.1.7 Sensor Status Information (PGRMT) The Garmin Pr oprietary sentence $PGRMT gi ves inform ation concerning the status of t he GPS sensor. This sentence is transmitted once per minute regardless of the selected b aud rate.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 11 APPENDIX A: EARTH DATUM LIST The following is a list of the Garmin GPS 20x Earth datum indices and the correspond ing earth datum name (i.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 12 44 KERTAU 1948–West Malaysia, Sing apore 45 L.C. 5 ASTRO–Cayman Brac Island 46 LIBERIA 1964–Lib eria 47 LUZON–Mi ndanao Island 48.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 13 83 PROVISIONAL SOUTH AMERICAN 1956– Bo livia, Chile, Colombia, Ecuador, Guyan a, Peru, Venezuela 84 SOUTH AMERICAN 1969–Argentina, Bo.
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 14 APPENDIX B: GARMIN BI NARY OUTPUT FORMAT In Binary Output mode, GPS 20x will transmit packets once per second .
190-00880-00 GPS 20x Technical Specificatio n s Rev. A Page 15 Satellite Data Record The satellite data has a record ID of 0x72 with 84 (0x54) d ata bytes.
Position Record The Position Record has a record iden tifier of typedef struct { float alt; float epe; float eph; float epv; int fix; double gps_tow; double lat; double lon; float lon_vel; float lat_v.
An important point after buying a device Garmin GPS 20x (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Garmin GPS 20x yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Garmin GPS 20x - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Garmin GPS 20x you will learn all the available features of the product, as well as information on its operation. The information that you get Garmin GPS 20x will certainly help you make a decision on the purchase.
If you already are a holder of Garmin GPS 20x, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Garmin GPS 20x.
However, one of the most important roles played by the user manual is to help in solving problems with Garmin GPS 20x. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Garmin GPS 20x along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
