Garmin GPS 20x Technical Specifications

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Contents

Garmin GPS 20x Technical Specifications Manual pdf 3 page image

190-00880-00 GPS 20x Technical Specifications Rev. APage iiTABLE OF CONTENTS1 Introduction..............................................................................................................................11.1 Cautions...........................................................................................................................................................11.2 Limited Warranty ............................................................................................................................................21.3 Overview .........................................................................................................................................................31.4 Features ...........................................................................................................................................................31.5 Technical Specifications..................................................................................................................................41.5.1 Physical Characteristics..................................................................................................................................... 41.5.1.1 Size.................................................................................................................................................... 41.5.1.2 Weight ............................................................................................................................................... 41.5.1.3 Color.................................................................................................................................................. 41.5.1.4 Case Material..................................................................................................................................... 41.5.1.5 Cable Length ..................................................................................................................................... 41.5.2 Electrical Characteristics................................................................................................................................... 41.5.2.1 Input Voltage..................................................................................................................................... 41.5.2.2 Input Current ..................................................................................................................................... 41.5.2.3 GPS Receiver Sensitivity .................................................................................................................. 41.5.2.4 Environmental Characteristics........................................................................................................... 41.5.3 GPS Performance .............................................................................................................................................. 41.5.3.1 Receiver............................................................................................................................................. 41.5.3.2 Acquisition Times ............................................................................................................................. 41.5.3.3 Update Rate ....................................................................................................................................... 41.5.3.4 Accuracy ........................................................................................................................................... 51.5.4 Interfaces........................................................................................................................................................... 51.5.4.1 GPS 20x Electrical Characteristics.................................................................................................... 51.5.4.2 Garmin Interface and Garmin USB Protocol..................................................................................... 52 Mechanical Characteristics & Mounting...............................................................................63 GPS 20x Software Interface....................................................................................................73.1 Transmitted NMEA 0183 Sentences ...............................................................................................................73.1.1 Sentence Transmission Rate.............................................................................................................................. 73.1.2 Transmitted Time .............................................................................................................................................. 83.1.3 Global Positioning System Fix Data (GGA) ..................................................................................................... 83.1.4 GPS DOP and Active Satellites (GSA) ............................................................................................................. 93.1.5 GPS Satellites in View (GSV)........................................................................................................................... 93.1.6 Recommended Minimum Specific GPS/TRANSIT Data (RMC) ..................................................................... 93.1.7 Sensor Status Information (PGRMT).............................................................................................................. 10Appendix A: Earth Datum List ..................................................................................................11Appendix B: Garmin Binary Output Format ...........................................................................14LIST OF TABLES AND FIGURESFigure 1. GPS 20x Top Case Dimensions .....................................................................................................................6Figure 2. GPS 20x Side View........................................................................................................................................6Figure 3. GPS 20x End View ........................................................................................................................................6Table 1: NMEA 0183 Output Sentence Order and Size ................................................................................................7