Garmin GPS 25 LP Technical Specification

Garmin GPS 25 LP Technical Specification Manual pdf 3 page image

iTable of ContentsTable of Contents ............................................................................................................. iSection 1 .........................................................................................................................1Introduction...................................................................................................................11.1 Overview...........................................................................................................11.2 Naming Conventions ........................................................................................11.3 Features ...........................................................................................................21.4 Technical Specifications...................................................................................31.4.1 Physical Characteristics .............................................................................31.4.2 Environmental Characteristics....................................................................31.4.3 Electrical Characteristics ............................................................................31.4.4 Performance ...............................................................................................41.4.5 Interfaces....................................................................................................41.5 Application ........................................................................................................51.5.1 Application Considerations.........................................................................5Section 2 .........................................................................................................................7Operational Characteristics ..........................................................................................72.1 Self Test ...........................................................................................................72.2 Initialization.......................................................................................................72.3 Navigation.........................................................................................................82.4 Satellite Data Collection ...................................................................................8Section 3 .......................................................................................................................10Hardware Interface .....................................................................................................103.1 Mechanical Dimensions..................................................................................103.2 Connector Specifications................................................................................103.3 Connector Pin-Out..........................................................................................113.4 Antenna Connection .......................................................................................14Section 4 .......................................................................................................................16Software Interface ......................................................................................................164.1 NMEA Received sentences ............................................................................164.1.1 Almanac Information (ALM) ......................................................................164.1.2 Sensor Initialization Information (PGRMI) ................................................174.1.3 Sensor Configuration Information (PGRMC) ............................................174.1.4 Additional Sensor Configuration Information (PGRMC1) .........................184.1.5 Output Sentence Enable/Disable (PGRMO).............................................194.1.6 Tune DGPS Beacon Receiver (PSLIB) ....................................................204.2 NMEA Transmitted Sentences........................................................................204.2.1 Sentence Transmission Rate.................................................................... 204.2.2 Transmitted Time......................................................................................214.2.3 Global Positioning System Almanac Data (ALM) ..................................... 224.2.4 Global Positioning System Fix Data (GGA) ..............................................224.2.5 GPS DOP and Active Satellites (GSA) .....................................................234.2.6 GPS Satellites in View (GSV) ...................................................................23