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2100LR12 Receiver
Technical Manual
Table of contents
OmniSTAR Limited Warranty................................................................................ iii
List of figures .......................................................................................................... v
List of tables............................................................................................................ v
1. Introduction......................................................................................................... 1
1.1 The OmniSTAR system.................................................................................. 1
1.2 Subscription type............................................................................................ 2
2. Factors affecting system performance............................................................. 4
2.1 Number of visible satellites ............................................................................ 4
2.2 Multipath......................................................................................................... 4
2.3 Position Dilution of Precision (DOP)............................................................... 5
2.4 Satellite elevations ......................................................................................... 5
2.5 Differential corrections ................................................................................... 5
3. Installation........................................................................................................... 6
3.1 System parts list ............................................................................................. 6
3.2 Installing the 2100LR12 ................................................................................. 6
3.2.1 Installation Considerations...................................................................... 6
3.2.2 Electrical Grounding Requirements ........................................................ 7
3.2.3 Counter Electromagnetic Force (CEMF)................................................. 7
3.2.4 Cable Installation Considerations ........................................................... 7
3.2.5 Antenna Location .................................................................................... 8
3.2.2 Power considerations.............................................................................. 9
3.2.3 Mounting ............................................................................................... 10
3.2.3 Connecting to external equipment ........................................................ 11
3.3 Start up procedure........................................................................................ 11
3.3.1 LED INDICATORS ................................................................................ 12
3.4 Subscription (re) activation........................................................................... 15
4. Connections ...................................................................................................... 16
4.1 Electrical Interface Description..................................................................... 16
4.2 Cables .......................................................................................................... 17
5. Troubleshooting ............................................................................................... 19
5.1 Contacting OmniSTAR ................................................................................. 20
Appendix A, Receiver Commands ...................................................................... 21
Appendix B - Specifications ................................................................................ 36
Appendix C – List of communication satellites ................................................. 38
Appendix D – List of reference stations ............................................................. 40
Appendix E - NMEA 0183 ..................................................................................... 45
E.1 NMEA introduction ....................................................................................... 45
E.2 NMEA 0183 message options ..................................................................... 45
E.3 NMEA 0183 message format....................................................................... 46
E.4 NMEA 0183 sentences ................................................................................ 47
E.4.1 GGA – GPS Fix Data............................................................................ 47
E.4.2 GLL – Geographic Position – Latitude/Longitude................................ 47
Issue April 2001
iv