DGPS MAX

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Figure 1-4 EGNOS Coverage1.5.2 OmniSTAR Worldwide DGPS ServiceOmniSTAR is a worldwide terrestrial DGPS service that providescorrection data to subscribers of the system with the use of ageostationary transponder.1.5.2.1 OmniSTAR DGPSOmniSTAR is a wide area DGPS service. The information broadcastby this service is based upon a network of reference stations placed atDGPS MAX Reference Manual 12
geographically strategic locations. The network stations communicateGPS correction data to control centers where it is decoded, checked,and repackaged into a proprietary format for transmission to ageostationary L-band communications satellite. The satellite rebroadcaststhe correction information back to Earth over a large signalfootprint where the DGPS MAX’s L-band differential satellite receiverdemodulates the data.The OmniSTAR signal content is not RTCM SC-104, but a proprietarywide-area signal that is geographically independent. With this service,the positioning accuracy does not degrade as a function of distance toa base station, as the data content is not composed of a single basestation’s information, but an entire network’s. When The DGPS MAXL-band DGPS receiver demodulates the proprietary signal, it convertsit into a local-area format for input to the GPS receiver (standardRTCM SC-104, message Type 1).The L-band DGPS receiver within the DGPS MAX interpolatescorrections from the wide-area signal, specific to your location usingVirtual Base Station (VBS) processing algorithms. The resultingRTCM corrections are those that would be calculated if a referencestation were set up at your present location. This type of solutionensures a consistent level of accuracy across the entire coveragearea. The GPS receiver inside the DGPS MAX provides positioninformation to the L-band DGPS receiver for VBS calculations.1.5.2.2 OmniSTAR Signal InformationThe OmniSTAR L-band signal is a line-of-sight UHF signal similar tothat of GPS. There must be a line of sight between the DGPS MAX’santenna and the geostationary communications satellite in order forthe L-band differential receiver inside the DGPS MAX to acquire thesignal.Various L-band communications satellites are used for transmitting thecorrection data to OmniSTAR users around the world. When theDGPS MAX has acquired an OmniSTAR signal, the elevation andazimuth are available in the menu system in order for you toDGPS MAX Reference Manual 13
Page 1: DGPS MAXReference ManualPart Number
Page 4 and 5: Copyright Notice© Copyright 2001 C
Page 6 and 7: CSI Wireless Inc. Limited WarrantyC
Page 8 and 9: Table of ContentsList of Figures ..
Page 10 and 11: 3.2.1 Automatic Tracking ..........
Page 12 and 13: 5.16.1 Changing the Source of DGPS
Page 14 and 15: List of FiguresFigure 1-1 Broadcast
Page 16 and 17: List of TablesTable 2-1 Power Requi
Page 18 and 19: PrefaceWelcome to the DGPS MAX Refe
Page 20 and 21: Appendix B: DGPS MAX Interface - pr
Page 22 and 23: Document ConventionsBold is used to
Page 25 and 26: 1. IntroductionThis chapter provide
Page 27 and 28: needs to be removed from each satel
Page 29 and 30: ! Any data loss that occurs through
Page 31 and 32: Augmentation Systems (SBAS). The DG
Page 33 and 34: Figure 1-1 Broadcast WAAS Inonspher
Page 35: Please note that signal coverage ma
Page 39 and 40: Figure 1-5 Worldwide OmniSTAR Cover
Page 41 and 42: ! Engine noise! Alternator noise! N
Page 43 and 44: and for best results, a user should
Page 45 and 46: 1.8 COAST TechnologyThe DGPS MAX re
Page 47 and 48: 2. InstallationThis chapter contain
Page 49 and 50: When selecting a location to instal
Page 51 and 52: vehicle. Other grounds may provide
Page 53 and 54: MAINExternal Device5 GND GND3 RX NM
Page 55 and 56: the 1-14-UNS thread to a 5/8 th inc
Page 57 and 58: 2.4.5 Connecting the CDA-2MAX Anten
Page 59 and 60: 3. DGPS MAX OverviewFor your conven
Page 61 and 62: tracking approach will result in mo
Page 63 and 64: 3.4.1 Tune ModesThe DGPS MAX may be
Page 65 and 66: 3.4.2 Receiver PerformanceThe Signa
Page 67 and 68: 4. DGPS MAX ArchitectureThe DGPS MA
Page 69 and 70: 5. OperationThis chapter introduces
Page 71 and 72: % & ^No GPS Fix GPS Position DGPS P
Page 73 and 74: Note - When using corrections from
Page 75 and 76: In Figures 5-9 to 5-15, the root me
Page 77 and 78: ^ 12332133312432 $444444444444 44F?
Page 79 and 80: is pressed. If is pressed, the menu
Page 81 and 82: 5.7.3 Beacon Mode Bar ChartWhen ope
Page 83 and 84: WAAS@When this menu is accessed usi
Page 85 and 86: Top Menu@ When accessed using the b
Page 87 and 88:
Longitude information is parsed fro
Page 89 and 90:
Precision@NavCnd@ ABBABBAccessing t
Page 91 and 92:
=_b: 0.1m This menu item indicates
Page 93 and 94:
Eph?Healthy??8NotUsed?Prev?9Above?E
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Pressing the and keys allows you to
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5.9.2 GPS Satellites MenuThis secti
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5.9.3 GPS Configure MenuThis menu p
Page 101 and 102:
GPGGA@?5?HzGPGGA@?1?HzGPGLL@?OffGPG
Page 103 and 104:
GPRMC@ 1 HzGPRRE@ OffGPVTG@ 5 HzGPZ
Page 105 and 106:
Top?Menu@ When accessed using the b
Page 107 and 108:
the Back@ or Top Menu@ item in focu
Page 109 and 110:
Back@ When accessed using the butto
Page 111 and 112:
signal blockages, if present. This
Page 113 and 114:
Page 115 and 116:
PositionTimeSat?UpdateThis menu ite
Page 117 and 118:
modulation rate using the and keys
Page 119 and 120:
This menu provides access to the si
Page 121 and 122:
(SS) and signal to noise ratio (SNR
Page 123 and 124:
ID?0001??H?01This menu item display
Page 125 and 126:
When using an external source, be s
Page 127 and 128:
Pressing the and keys allows you to
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Page 131 and 132:
item returns the menu system to the
Page 133 and 134:
Top?Menu@ When accessed using the b
Page 135 and 136:
Back@ or Top Menu@ item in focus wi
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! Depending on which baud rate you
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! Using the or key, move the Config
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6. Configuration WizardThe Configur
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6.1 Start-up SequenceWhen you turn
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6.6 Saving a ConfigurationWhen comp
Page 147 and 148:
Table 7-1 NMEA Message ElementsElem
Page 149 and 150:
Table 7-3 GGA Data Message DefinedF
Page 151 and 152:
GST message into its components. Th
Page 153 and 154:
7.5.7 RRE Data MessageThe RRE messa
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DGPS MAX Reference Manual 131
Page 157 and 158:
• Check antenna connections• Ve
Page 159 and 160:
ItemSerial Interface Specifications
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Page 163 and 164:
MAINExternal Device5 GND GND3 RX NM
Page 165 and 166:
! Connect Pin-5-Common Ground of th
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OmniSTAR Service ActivationYou may
Page 169 and 170:
Over-Air Subscription ActivationOmn
Page 171 and 172:
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! Adjust the output of the Bin96 me
Page 175 and 176:
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Proximity, 4DGPS MAXRear Panel Inte
Page 179:
Automatic Beacon Search (ABS),39, 4
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