Garmin GPS 18x Technical Specifications - Page 3

TABLE OF CONTENTS 1 Introduction...1 1.1 Cautions...1 1.2 Limited Warranty ...2 1.3 Overview ...3 1.4 Features ...3 1.5 GPS 18x Series...4 1.5.1 GPS 18x USB...4 1.5.2 GPS 18x PC ...4 1.5.3 GPS 18x LVC, GPS 18x LVC-5m, and GPS 18x-5Hz 4 1.6 Technical Specifications...5 1.6.1 Physical Characteristics...5 1.6.1.1 Size...5 1.6.1.2 Weight ...5 1.6.1.3 Color...5 1.6.1.4 Case Material...5 1.6.1.5 Cable Length ...5 1.6.2 Electrical Characteristics...5 1.6.2.1 Input Voltage...5 1.6.2.2 Input Current ...5 1.6.2.3 CMOS Serial Output Levels...5 1.6.2.4 GPS Receiver Sensitivity ...5 1.6.2.5 Environmental Characteristics...6 1.6.3 GPS Performance ...6 1.6.3.1 Receiver...6 1.6.3.2 Acquisition Times ...6 1.6.3.3 Update Rate ...6 1.6.3.4 Accuracy ...6 1.6.4 Interfaces...6 1.6.4.1 GPS 18x Electrical Characteristics...6 1.6.4.2 Garmin Interface and Garmin USB Protocol 6 1.6.4.3 GPS 18x PC, GPS 18x LVC, & GPS 18x-5Hz Protocols 7 1.6.4.4 Measurement Pulse Output (GPS 18x LVC & GPS 18x-5Hz only 7 2 GPSx 18x LVC & GPS 18x -5Hz Wiring and Pinouts 8 2.1 GPS 18x LVC & GPS 18x -5Hz Pinout...8 2.2 GPS 18x LVC & GPS 18x -5Hz Wiring Diagrams 8 3 Mechanical Characteristics & Mounting 10 4 GPS 18x PC, GPS 18x LVC, & GPS 18x-5Hz Software Interface 12 4.1 Received NMEA 0183 Sentences ...12 4.1.1 Almanac Information (ALM)...12 4.1.2 Sensor Initialization Information (PGRMI) ...13 4.1.3 Sensor Configuration Information (PGRMC 13 4.1.4 Additional Sensor Configuration Information (PGRMC1 14 4.1.5 Output Sentence Enable/Disable (PGRMO 14 4.2 Transmitted NMEA 0183 Sentences ...15 4.2.1 Sentence Transmission Rate...15 4.2.2 Transmitted Time ...16 4.2.3 Global Positioning System Almanac Data (ALM 16 4.2.4 Global Positioning System Fix Data (GGA 17 4.2.5 GPS DOP and Active Satellites (GSA) ...17 4.2.6 GPS Satellites in View (GSV)...17 4.2.7 Recommended Minimum Specific GPS/TRANSIT Data (RMC 18 190-00879-08 GPS 18x Technical Specifications Page ii Rev. B