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Manuels
Marques
Garmin
gps 20x
Manuel D’Utilisation
Garmin gps 20x Manuel D’Utilisation
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GPS 20x Technical Specifications
Rev. A
Page ii
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
Technical Specifications..................................................................................................................................
4
1.5.1
Physical Characteristics.....................................................................................................................................
4
1.5.1.1
Size....................................................................................................................................................
4
1.5.1.2
Weight ...............................................................................................................................................
4
1.5.1.3
Color..................................................................................................................................................
4
1.5.1.4
Case Material.....................................................................................................................................
4
1.5.1.5
Cable Length .....................................................................................................................................
4
1.5.2
Electrical Characteristics...................................................................................................................................
4
1.5.2.1
Input Voltage.....................................................................................................................................
4
1.5.2.2
Input Current .....................................................................................................................................
4
1.5.2.3
GPS Receiver Sensitivity ..................................................................................................................
4
1.5.2.4
Environmental Characteristics...........................................................................................................
4
1.5.3
GPS Performance ..............................................................................................................................................
4
1.5.3.1
Receiver.............................................................................................................................................
4
1.5.3.2
Acquisition Times .............................................................................................................................
4
1.5.3.3
Update Rate .......................................................................................................................................
4
1.5.3.4
Accuracy ...........................................................................................................................................
5
1.5.4
Interfaces...........................................................................................................................................................
5
1.5.4.1
GPS 20x Electrical Characteristics....................................................................................................
5
1.5.4.2
Garmin Interface and Garmin USB Protocol.....................................................................................
5
2
Mechanical Characteristics & Mounting...............................................................................
6
3
GPS 20x Software Interface....................................................................................................
7
3.1
Transmitted NMEA 0183 Sentences ...............................................................................................................
7
3.1.1
Sentence Transmission Rate..............................................................................................................................
7
3.1.2
Transmitted Time ..............................................................................................................................................
8
3.1.3
Global Positioning System Fix Data (GGA) .....................................................................................................
8
3.1.4
GPS DOP and Active Satellites (GSA) .............................................................................................................
9
3.1.5
GPS Satellites in View (GSV)...........................................................................................................................
9
3.1.6
Recommended Minimum Specific GPS/TRANSIT Data (RMC) .....................................................................
9
3.1.7
Sensor Status Information (PGRMT) ..............................................................................................................
10
Appendix A: Earth Datum List ..................................................................................................
11
Appendix B: Garmin Binary Output Format ...........................................................................
14
LIST OF TABLES AND FIGURES
Figure 1. GPS 20x Top Case Dimensions .....................................................................................................................
6
Figure 2. GPS 20x Side View........................................................................................................................................
6
Figure 3. GPS 20x End View ........................................................................................................................................
6
Table 1: NMEA 0183 Output Sentence Order and Size ................................................................................................
7
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