User manual
Contents
1. wwwwwwmmmmmmmamanwa 36 Description of the PTINLSM message 36 Release March 2003 OmniSTAR Limited Warranty This warranty applies only to normal usage of the product It does not apply to units or electronic circuit boards which are defective due to improper installation or handling Physical damage due to lightning or other electrical discharge and units subjected to fresh or salt water contamination is not covered OmniSTAR reserves the right not to warrant the product if upon request sufficient proof of recommended installation compliance as laid out in this manual is not provided No other warranties are expressed or implied No other warranties exist One Year Limited Hardware Warranty OmniSTAR reserves the right to repair and or replace at its option any part or parts found to be defective provided such defects in their opinion are due to faulty material or workmanship and are not caused by unauthorised or improper repair or abuse or normal wear Purchaser shall be responsible for shipping and insurance of the returned product for repair under this warranty OmniSTAR will pay shipping and insurance for the product s return to purchaser provided that the product returned proves to be defective under this limited warranty OmniSTAR BV and its operating companies world wide Fugro NV warrants this product to be free from defects in workmanship and material for a period of one year from the date of original sale b2. OmniSTAR subscription agreement form lt lt wwwsmmama 37 List of figures Figure 1 Artist impression of the OmniSTAR system wsswmmaamamaaa 2 Figure 2 World coverage map for the OmniSTAR service 3 Figure 3 EA SAT coverage area and reference stations 3 Figure A MUM pa IA KAA wai 4 Figure 5 7114LR12 Receiver Bottom View ereere 7 Figure 6 Pinning of the 9 pin sub D connector on the power data cable 9 Figure 7 Pins of the 12 pin male left and 12 pin female right connectors 9 Figure 8 7114LR12 Standard data power cable w wwwwmammamaawa 10 Figure 9 7114LR12 receiver to a laptop computer cceeeeeeteeeee 11 Figure 10 7114LR12 receiver to a Pocket PC wwwwwmwmmmmmamwawa 11 Figure 11 Troubleshooting cccccccececeeeceeeeceeeeeeeeeeeaeeeeeeeseseneaeeeeeeeeeeeaes 15 Figure 12 Reference stations and coverage area per satellite 18 List of tables Table 1 7114LR12 Power Data cable pin connections 9 Table 2 7114LR12 specifications cccccceceeeeeeseseseseseseseseseseseseseeeeees 16 Table 3 World wide satellite frequencies and symbol rates 18 Table 4 Reference stations on EA SAT zwwwwaammanamwnananwnawamunamwanazia 19 Table 5 Refe
3. T shows that track made good is relative to true north 3 Not used 4 Not used 5 Speed over ground in knots 0 3 decimal places 6 Fixed text N shows that speed over ground is in knots 7 Speed over ground in kilometers hour 0 3 decimal places 8 Fixed text K shows that speed over ground is in kilometers hour Table 18 Description of the VTG message NOTE Because the contents of this NMEA message do not change significantly during a 1 second interval the receiver outputs this message at a maximum rate of 1 Hz 32 Release March 2003 ZDA Time and Date The ZDA message contains UTC the day the month and the year of the local time zone GPZDA hhmmss s xx xXx XXXX XX XX Field Number Description UTC Day 0 31 Month 0 12 Year Local Zone Description Hours 13 Hours Local Zone Description Minutes akWN O Table 19 Description of the ZDA message NOTES Local zone description is the number of whole hours added to local time to obtain UTC The zone description is always negative for eastern longitudes Fields 5 and 6 are Null fields in the Trimble BD132 A GPS receiver cannot independently identify the local time zone offsets Because the contents of this NMEA message do not change significantly during a 1 second interval the receiver outputs this message at a maximum rate of 1 Hz 33 OmniSTAR 7114LR12 Operator s Manual PTNLDG DGPS Receiver Status
4. Frequency 1575 42 MHz General Update rate Serial Interface Serial Protocol RS 232 Serial Bus CANBUS Hi amp Lo 300 600 1200 2400 4800 Baud rate 9600 19200 38400 default 9600 8 N 1 Data output NMEA RTCM optional Data rate 1 Hz 2 5 10 Hz optional Power Specifications Power supply 9 32 VDC Power consumption 250 mA at 12 V Physical Characteristics Weight 0 52 kg Circular housing Dimensions diameter 152 mm height __127 mm UV resistant plastic dust proof waterproof shock resistant Casing 16 Release March 2003 Environmental Specifications Operating Temperature 30 C to 60 C Storage Temperature 40 C to 80 C 5 Humidity 100 condensing unit fully sealed Approvals Compliance FCC Class B CE EP 455 17 OmniSTAR 7114LR12 Operator s Manual Appendix B List of communication satellites The following table presents a list of L band communication satellites which will enable you to use your 7114LR12 over the entire world depending on your subscription type you might only be entitled to a restricted area Table 3 World wide satellite frequencies and symbol rates Satellite Channel Freguency MHz Baud Rate AF SAT 1535 1400 600 EA SAT 1535 1525 1200 AP SAT 1535 1375 1200 AM SAT 1535 1375 1200 The coverage area of each satellite and its ref
5. The PTNLDG sentence is a sentence for identifying the DGPS receiver channel strength channel SNR channel frequency channel bit rate channel number channel tracking status RTCM source and channel performance indicator for satellite DGPS PTNLDG xxx x XX X XXXXXXX X XXXXX XX X X X XX XX The PTNLDG sentence fields are defined in free format with the maximum number of characters in the field indicated in above i e 25 bps displayed as xxx 25 xxx instead of xxx 00025 xxx Additionally if a channel is disabled the channel fields may be null fields commas only If more then one channel is available the sentence should be repeated for each channel Field Number Description 1 Channel signal strength in 1 dBuV m This is the ADC input voltage level Channel signal to noise SNR level in dB Channel frequency in kHz Channel bit rate in bits per second bps Channel number 0 99 Channel tracking status OuakWND 0 Channel idle 1 Wideband FFT search 2 Searching for signal 3 Channel has acquired signal 4 Channel has locked on signal 5 Channel disabled 7 Specified channel is used as RTCM source 0 Not used 1 Used 8 Channel tracking performance indicator This is the time since the last sync in tenths of seconds ranging from 0 255 Table 20 Description of the PTNLDG message NOTE Because the contents of this NMEA message do not change significantly during a 1 second interval the receiver outputs this
6. affecting system performance 5 2 Intermittent GPS loss When GPS lock is intermittent the power data cable may have a loose connection Check that all connections are secured properly Water may enter the cable connection and cause intermittent loss of GPS Disconnect the cable and let the connection dry Reconnect the cable If the receiver is connected properly make sure that it is mounted on the highest point of the vehicle so that no GPS signals are blocked Depending on the orientation of the vehicle the satellites and the possible obstruction one or more satellites may be blocked Sometimes blocking shows up when traveling one direction but not while traveling other directions If the receiver seems fine check the configuration masks If the PDOP or SNR Masks are set to extreme levels the receiver could possibly ignore valid satellite data The default SNR Mask is 6 The default PDOP Mask is 6 5 3 Power lines and strong magnetic fields In Europe the energy from power lines is 50 Hz The harmonic energy falls off rapidly as the frequency increases Thus power lines have very little effect on the GPS amp Satellite Differential Signals Strong magnetic fields have no effect on GPS amp Satellite Differential signals Some computers and other electric equipment radiate electromagnetic energy that can interfere with a GPS receiver If you suspect interference from a local magnetic field move the receiver away from or turn off
7. Kalgoorlie Australia 315 YES NO 31 Melbourne Australia 385 YES NO 32 Okinawa Japan 261 YES NO 33 Platong Thailand 018 YES NO 34 Sakhalin Russia 510 YES NO 35 Bahrain Bahrain 260 YES NO Table 7 Reference stations on AM Sat 1 Houston Texas 100 YES YES 2 Cocoa Beach Florida 120 YES YES 3 Long Island New York 333 YES YES 4 Carmen Mexico 110 YES YES 5 Punta Arenas Chile 210 YES NO 6 Guayaquil Ecuador 202 YES NO 7 Rio de Janeiro Brazil 225 YES YES 8 St Johns Newfoundland 470 YES YES 9 Dartmouth Nova Scotia 440 YES NO 10 Recife Brazil 075 YES NO 11 Port Of Spain Trinidad 111 YES YES 12 Caracas Venezuela 112 YES YES 13 Belem Brazil 017 YES NO 14 Caymen Grand Cayman 192 YES YES 15 Honolulu USA 210 YES NO 16 Curtiba Brazil 257 YES YES 17 Pensacola USA 301 YES YES 18 Vitoria Brazil 205 YES YES 19 Mercedes USA 263 YES YES 20 Buenos Aires Argentina 345 YES NO Release March 2003 21 OmniSTAR 7114LR12 Operator s Manual Appendix D NMEA 0183 D 1 NMEA introduction NMEA 0183 is an interface protocol created by the National Marine Electronics Association The latest release of NMEA 0183 is Version 2 2 This protocol was originally established to allow marine navigation equipme
8. PC or other logging device which has been set to communicate using 9600 8 N 1 e Connect the power cable to an appropriate power supply 9 to 32 VDC which has been turned off e Turn on the power supply When the unit is used for the first time has not been used for a long period of time or has been moved a long distance it may take up to 12 5 minutes to start outputting NMEA messages The outputting of differentially corrected NMEA may take up to 45 minutes under these circumstances 3 5 Subscription re activation If the OmniSTAR subscription on your 7114LR12 has not been activated yet will expire soon or has been expired already a new subscription can be sent over the satellite link The procedure for obtaining a new subscription is e Fill in the OmniSTAR subscription agreement form see Appendix E Fax the form to OmniSTAR BV at 31 70 3170919 e Atthe agreed time of activation make sure your receiver is outside and ina place where it will be able to receive signals from the communication satellite e Have the receiver switched on at the time of activation At the time of activation a series of commands containing the new expiry date and other subscription information will be sent over the satellite link to your 7114LR12 receiver If your receiver does not start outputting differential position data within 45 minutes after the activation time please contact OmniSTAR by phone at 31 70 3170900 Release March 2003 4 Cable a
9. change significantly during a 1 second interval the receiver outputs this message at a maximum rate of 1 Hz 30 Release March 2003 RMC Recommended Minimum Specific GPS Data The RMC sentence identifies the UTC time status latitude longitude speed over ground SOG date and magnetic variation of the position fix GPRMC 184804 00 A 3723 476543 N12202 239745 W 000 0 0 0 0511 96 15 6 E 7C Field Number 1 2 NOOR W 10 11 12 Description Time UTC time of the position fix in hhmmss ss format Status A Valid V Navigation Receiver Warning V is output whenever the receiver suspects something is wrong Latitude coordinate Latitude direction N North S South Longitude coordinate Longitude direction W West E East Speed Over Ground SOG in knots 0 3 decimal places Track Made Good True in degrees Date in dd mm yy format Magnetic Variation in degrees Direction of magnetic variation E Easterly variation from True course subtracts from True course W Westerly variation from True course adds to True course Mode Indication A Autonomous D Differential N Data not valid Table 17 Description of the RMC message 31 OmniSTAR 7114LR12 Operator s Manual VTG Course Over Ground and Ground Speed The VTG sentence identifies the actual track made good and speed over ground GPVTG 0 T 0 00 N 0 00 K 33 Field Number Description 1 Track made good 2 Fixed text
10. 14LR12 Operator s Manual 1 2 Subscription The 7114LR12 supports the following OmniSTAR service e Virtual Base Station VBS where the data from multiple reference stations is used in the processor software to produce enhanced corrections for the user s location This service provides optimal position accuracy with a minimum dependence on the user s location The VBS service can be obtained on a continental regional or farm license basis Figure 1 Artist impression of the OmniSTAR system WOnandet Rogalane ro Aberdeen nani vLeidoshendan Ae Toute 4 vin ys F 3 jn oe OMalta Figure 3 EA SAT coverage area and reference stations Release March 2003 OmniSTAR 7114LR12 Operator s Manual 2 Factors affecting system performance The 7114LR12 has proven to be a high quality sub meter positioning device The accuracy that the user can obtain depends on several factors including Number of visible satellites Multipath Dilution of Precision DOP Satellite elevations GPS mode Differential correction DGPS mode 2 1 Number of visible satellites A minimum of four satellites is required to calculate a 3 dimensional position In general it can be said that every increase in the number of visible satellites will result in an increase in the system s accuracy As the GPS satellites orbit around the earth the number of visible satellites will change in time The GPS constellation has been design
11. 6 GPS Quality Indicator O No GPS 1 GPS 2 DGPS 7 Number of Satellites in Use 8 Horizontal Dilution of Precision HDOP 9 10 Height above Mean Sea level in Meters M Meters 11 12 Geodial Separation in Meters M Meters 13 Age of Differential GPS Data 14 Differential Reference Station ID 0000 1023 Table 11 Description of the GGA message NOTES The GGA message provides 4 decimal points of precision in non differential mode and 5 decimal points of accuracy in differential mode Geodial Separation is the difference between the WGS 84 earth ellipsoid and mean sea level MSL Time in seconds since the last RTCM SC 104 message type 1 or type 9 update 26 Release March 2003 GLL Geographic Position Latitude Longitude The GLL message contains the latitude and longitude of the present position the time of the position fix and the status GPGLL IIILIll a yyyyy yyy a Ahmmss s A Field Number Description 1 2 Latitude N North or S South 3 4 Longitude E East or W West 5 UTC of Position 6 Status A Valid V Invalid Table 12 Description of the GLL message GRS GPS Range Residuals The GRS sentence is used to support the Receiver Autonomous Integrity Monitoring RAIM GPGRS 220320 0 0 0 8 0 2 0 1 0 2 0 8 0 6 55 Field Number Description 1 UTC time of GGA position fix 2 Residuals 0 Residuals used to calculate position given in the matchi
12. 7114LR12 Operators Manual OmniSTAR The Global Positioning System Release May 2004 About this manual This manual has been released by Manual release date Manual part number OmniSTAR BV Dillenburgsingel 69 2263 HW Leidschendam The Netherlands Phone 31 70 3170900 Fax 31 70 3170919 Email dgps omnistar nl www omnistar nl May 2004 MAN 7114 00 The information in this manual applies to 7114LR12 receivers with firmware version 1 73 Specifications are subject to change without notice Copyright Notice 2004 OmniSTAR BV All rights reserved No part of this manual may be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form without prior written consent from OmniSTAR BV OmniSTAR 7114LR12 Operator s Manual Table of contents List of figures Listof tables cece ccc ces AA e entra bade wees teed hace MANA SIA AAA NO Saa SIWA Maa MASWA iii OmniSTAR Limited Warranty ccccccsceesseneseeneesesseeeeeeseenseseeeeesesseeeeseseeneeesseees v A INTRO GUCTION PA AAPA A AEA T TE A E OAE 1 1 1 The OMNISTAR SyStEMi eiin t na a a ata ariaa ata a aii 1 1 2 SUDSCrIPLION ninne awn ee E aii a aids 2 2 1 Number of visible satellites 0 cccccececcecececeeeeeeceeceeeeeeeseeeaeaeeeeeeeseesenaeees 4 QED MUMIA ii AA EA NA KU AN 4 2 3 Position Dilution of Precision DOP lt sswwmswamwanmwnwnazwnaanzwaawaninanaanamwzana 5 2 4 Satel
13. able This manual Magnetic mount Configuration software 3 2 Installing the 7114LR12 In order to provide for a smooth and successful installation please observe the following instructions and recommendations 3 2 1 Receiver placement The 7114LR12 may be mounted using the three M5 threaded inserts in the receivers base plate or the 5 8 threaded insert in the centre of the receiver s base plate with a pole or the magnetic mount When selecting a location for installation make sure that The receiver is within reach of power and data cable connections e The cable can not be bent or damaged by external components e The receiver has a clear line of sight towards the L band communication satellite Since these satellites are located above the equator they are to the South of Europe at an elevation angle of 20 Oslo to 45 Athens 3 2 2 Power considerations Power can be supplied to the 7114LR12 by connecting 9 32 VDC on the red power wire The other power wire should be connected to ground Only supply power after the cable has been connected to the 7114LR12 Never attach or detach a powered cable to from the unit The power consumption of the 7114LR12 is 250 mA at 12 V Release March 2003 3 3 Receiver connections Figure 5 shows the bottom of the 7114LR12 receiver and its connection port Connection Port Figure 5 7114LR12 Receiver Bottom View The connection port can accept power The 7114LR12 standard powe
14. ape Town South Africa 335 YES NO 4 Dakar Senegal 144 YES NO 19 OmniSTAR 7114LR12 Operator s Manual 5 Douala Cameroon 043 YES YES 6 Durban South Africa 305 YES NO 7 Faro Portugal 371 YES NO 8 Lagos Nigeria 060 YES NO 9 Las Palmas Canaries 280 YES NO 10 Luanda Angola 095 YES YES 11 Nairobi Kenya 015 YES NO 13 Pointe Noire Congo 045 YES YES 14 Port Elizabeth South Africa 337 YES NO 15 Rogaland Norway 580 YES YES 16 Sao Tome Sao Tome 011 YES YES 17 Walvis Bay Namibia 235 YES NO Table 6 Reference stations on AP Sat Nr Station ID VBS HP 1 Auckland NZ 022 YES NO 2 Karratha Australia 215 YES NO 3 Darwin Australia 125 YES NO 4 Broome Australia 185 YES NO 9 Asahikawa Japan 261 YES NO 10 Singapore 010 YES YES 11 Miri Malaysia 042 YES YES 12 Vung Tua Vietnam 012 YES YES 13 Hong Kong 220 YES NO 14 Seoul S Korea 370 YES NO 15 Kota Kinabalu Malaysia 061 YES NO 16 Bali Indonesia 096 YES YES 17 Mumbai Arvi India 191 YES YES 19 Subic Bay Phillipines 151 YES NO 20 Kuwait 290 YES NO 21 Abu Dhabi UAE 016 YES NO 23 Kuantan Malaysia 041 YES NO 25 Bangkok Thailand 141 YES YES 26 Chennai India 131 YES NO 27 Bathurst Australia 336 YES NO 28
15. ceaeeeeeeesesennaeaeeeeeess 12 5 2 Intermittent GPS AAA AAA AAA UA 12 5 3 Power lines and strong magnetic Fid SA 12 5 4 Choosing an Mounting IOcatioN w wwwwsnemananawnnanzwanwaninamumanawwaawa 13 5 5 Checking for cable failure ccececeeececeeeeeeeenneceeeeeseseeaeaeeeeesesensneeeeeeeess 13 5 6 Reducing engine noise cccccccecccseececeeeeeeceeaeeeeeeeceeeeeaeeeeeeeeneennieaeeeseess 13 5 7 Why satellite DGPS works in some places but not others 13 5 8 Verifying the unit is outputting NMEA messages eeen 13 5 10 Troubleshooting Quide c cccccccccsecceceeeeeeeeaeeeeeeeeeeeeaaeeeeeeeeneeneaeaeeeeeess 15 5 11 Contacting OMNISTAR ccccceeeeceeceeeeeeeeeeeaeeeeeeesesecsaeeeeeeeseseenaeeeeeeeess 15 Appendix A Specifications ccccccceceeeeeeeee cece eeeeeeeeeeeeeeseeeeeaeeeeeeeeeeeeeenenees 16 Appendix B List of communication satellites mm 18 APPENDIX C cvcecccesseveivasutetecnece cece serstasnevnvecneeeeutedsevestieerdettecvstneueresitederesthecduasvertis 19 List of reference Stations ccccccceeeesecceceeeeeeeesaeeeeeeeeeseeeaeaeceeeeeseeenaeaeeeeeess 19 Appendix D NMEA 0183 2200 am zama anza a eeeeeeenseeeeeeeseeneeseeeeesasseneeseseenaeeesenes 22 D 1 NMEA introduction ceisde irene neern tedna preuar deiere Peira 22 D 2 NMEA 0183 message options ww wssmwanaamwanwwawanzwaanawwannaz
16. ed so as to provide a minimum of 4 visible satellites at any location at all times The number of visible satellites can decrease due to blockage by objects such as trees and buildings 2 2 Multipath It is possible for satellite signals to reflect off large nearby objects such as buildings cars or even the ground thereby resulting in an erroneous distance measurement This phenomenon is known as multipath Multipath can cause significant errors in the position determination and it is therefore important to place the receiver in an environment which is free of large reflective surfaces It is also recommended to mount the receiver directly onto a surface while maintaining a clear view of the sky in all directions Figure 4 Multipath Release March 2003 2 3 Position Dilution of Precision DOP The Position Dilution of Precision PDOP is a measure of the satellite geometry The lower the PDOP value the more accurate the GPS position will be By default the 7114LR12 is configured to output position data as long as the Position Dilution of Precision does not exceed 6 2 4 Satellite elevations The signal from a satellite which is low on the horizon will travel a greater distance through the atmosphere This results in lower signal strength and a delayed reception thereby causing erroneous and noisy data By default the 7114LR12 is configured to ignore any satellites that have an elevation angle lower than 5 2 5 GPS
17. erence stations are displayed in the following figures Figure 12 Reference stations and coverage area per satellite EA SAT 18 Release March 2003 APPENDIX C List of reference stations The following tables present the current list of reference stations which are broadcast over the different satellites Check www surveyplanner com for the latest updates of these lists Table 4 Reference stations on EA SAT 1 Abu Dhabi UAE 016 YES YES 2 Kuwait 290 YES YES 3 Bahrain 260 YES NO 4 Aberdeen Scotland 571 YES YES 5 Alexandria Egypt 310 YES NO 6 Astrakhan Russia 462 YES NO 7 Baku Azerbaijan 400 YES NO 8 Bodo Norway 122 YES NO 9 Crete Greece 340 YES NO 10 Faro Portugal 371 YES YES 11 Istanbul Turkey 410 YES NO 12 Leidschendam The Netherlands 521 YES YES 13 Malta 351 YES NO 14 Ny Alesund Spitsbergen 101 YES NO 15 Orlandet Norway 630 YES YES 16 Rogaland Norway 580 YES YES 17 Shannon Ireland 530 YES NO 18 Torshavn Faroes 620 YES NO 19 Toulouse France 431 YES NO 20 Tromso Norway 690 YES NO 21 Vardo Norway 114 YES NO 22 Visby Sweden 229 YES NO 23 Vienna Austria 480 YES NO Table 5 Reference stations on AF SAT Nr Station ID VBS HP 1 Abidjan Ivory Coast 050 YES NO 2 Blantyre Malawi 155 YES NO 3 C
18. ery 30 seconds PTNLSM RTCM special message The PTNLSM sentence is a sentence for identifying the Reference Station ID and the ASCII Text message included in a RTCM Type 16 Special Message The PTNLSM message is generated anytime a RTCM stream receives a valid Type 16 Special Message PTNLSM 0022 This is a message XX Field Number Description 1 Reference Station ID number ranging from 0 to 1023 Leading zeros must be added to fill 4 digit field 2 ASCII text message sentence contained within the Type 16 RTCM message Table 23 Description of the PTNLSM message 36 Release March 2003 Appendix E OmniSTAR subscription agreement form The form is necessary to apply for a new OmniSTAR subscription for your 7114LR12 receiver And can be found on our website www omnistar nl 37
19. lite DGPS works in some places but not others Local canopy cover in the direction of the differential satellite can reduce the correction signal strength to unusable levels Wet canopy reduces signals even more The same local environmental factors that affect GPS signals such as radar sets microwave transmitters and the like can interfere with the differential satellite signals 5 8 Verifying the unit is outputting NMEA messages Connect the 7114LR12 receiver to a PC with the Standard Data Power Cable and use Windows 95 98 s HyperTerminal or any other terminal program to view the NMEA messages input through the computers serial port The default NMEA parameters are 9600 N 8 1 13 OmniSTAR 7114LR12 Operator s Manual 5 9 Losing configuration settings when the receiver is powered off The 7114LR12 receiver configuration parameter settings are stored in battery backed RAM random access memory The Lithium battery has a 10 year life span You can assume the Lithium battery has failed when the receiver no longer retains configuration parameter setting changes Note The receiver can continue to use the default configuration parameters but does not retain any custom changes to the default settings after it is powered off Contact OmniSTAR Technical Support Service at 31 70 3170900 to arrange for replacement of Lithium batteries 14 Release March 2003 5 10 Troubleshooting guide Use the following diagram to identify and solve
20. lite elevations 2 00 00 ccccceccceccece cece ceeeeeaeceeeeeceeeaaeaeceeeeeeeeeaeeeeeeeeseeeninaeees 5 DZ OASPS MOS uu EA AK KE 5 2 6 Differential corrections ccccecceceeeeeeeeeaeee cece eeeeeaeeeceeeeeeeesaeeeeeeeeseeesenaeees 5 2 fF DGPS mode ii IA zak 5 3 Installato sc seo EA as aia eck Fenech AAA APAA KA BAA APAA 6 3 1 SyStem parts listin pepi e e a tage ch vested es Ea eet leseogdigpevieschesige iZenes 6 3 2 Installing the 7114LR12 carinici niiae diirid irii 6 3 2 1 Receiver placement ccccccceseesececeeeeeeeeeenaeeeceeeseseeeaeaeeeeeenseesanaeees 6 3 2 2 Power considerations 0 0 eee ee eeeeeeeeeeeeeeeeneeeeeeaeeeseeaeeeenneeeeneneeeeeeaaes 6 3 3 Receiver CONNECTIONS ua IAA Eare 7 3 31 ASClland TSIP INPUte ii iwa 7 3 3 3 1 PPS Output scene en a ean eee 8 3A Stamup Procedure ma KA Kai due liebe ot kane kimeweza 8 3 5 Subscription re activation 2 eee cece cece ee eeeeeeae cece ee seeeeaaeeeeeeeseteenaeeeeeeeess 8 4 Cable and Connectors cceceeeeceeeeeeeeeeeee cece ee eeeeaeeeeeee ees eaaeaeeeeeseseesseeeeeeeeeees 9 4 1 Routing and connecting the 7114LR12 data power cable 10 4 2 Connecting to external EQUIPMENT eee ee cette cece ee eeeeee ce ee ee eeeeeeaeeeeeeeeeeeaes 11 5 TROUDISSNOOTHING cca ca vceteeevenvcsneeneceeterentesansueedetesbndennedeveasnatueseauveveanatncuieepsvnies 12 5 1 Increasing GPS ACCUrACY ccccceceececeeeeeeeeeeeaeeeeeeeeese
21. message at a maximum of 1 Hz 34 PTNL GGK Release March 2003 Time Position Position Type and DOP Values PTNL GGK 172814 00 071296 3723 46587704 N 12202 26957864 W 3 06 1 7 EHT 6 777 M 48 Field Number 1 2 3 4 8 9 10 11 Description UTC of position fix in hhmmss ss format UTC Date of position in mmddyy format Latitude in degrees and decimal minutes for example dddmm mmmmmmm Direction of latitude N North S South Longitude in degrees and decimal minutes for example dddmm mmmmmmm Direction of Longitude E East W West GPS Quality indicator 0 Fix not available or invalid 1 Autonomous GPS fix 4 Differential code phase only solution DGPS Number of satellites used in GPS solution DOP of fix Ellipsoidal height of fix antenna height above ellipsoid M Ellipsoidal height is measured in meters Table 21 Description of the PTNL GGK message PTNLID Receiver Identity The PTNLID sentence is a sentence for identifying the receiver s machine ID product ID major and minor release numbers and firmware release date PTNLID 097 01 xxx xxx DD MM YY XX 35 OmniSTAR 7114LR12 Operator s Manual Field Number Description Machine ID Product ID Major firmware release number Minor firmware release number Firmware release date in DD MM YY format ahWN Table 22 Description of the PTNLID message NOTE The PTNLID sentence is if enabled output ev
22. mode The default GPS position mode is Auto 2D 3D Three dimensional positions are more accurate than two dimensional positions so changing the receiver to Manual 3D prevents 2D positions from being computed 2 6 Differential corrections For accurate positioning it is essential that the differential corrections are being received In order to ensure reception of the OmniSTAR satellite signal it must be prevented that the line of sight towards the satellite is blocked by objects such as trees and buildings Multipath reflections can cause destructive interference thereby significantly decreasing the signal strength It is therefore recommended to mount the 7114LR12 directly onto a surface in a reflection free environment Although the 7114LR12 has been designed to provide optimal system performance under most circumstances it is possible due to the nature of radio communications that system performance degrades due to local interference sources 2 7 DGPS mode The DGPS mode default setting is DGPS Auto On Off Selecting DGPS Only restricting the receiver to only output differential GPS positions prevents autonomous non differential positions from being computed OmniSTAR 7114LR12 Operator s Manual 3 Installation This chapter contains instructions and recommendations for the installation of the 7114LR12 3 1 System parts list A shipment usually consists of 7114LR12 receiver part nr REC 7114LR12 Combined data power c
23. nd Connectors ET Pin Signal 1 N A 2 RXD 3 TXD 4 OVeooo O 0000 oe 8 N A 9 N A DB9 Female Figure 6 Pinning of the 9 pin sub D connector on the power data cable P1 Conn 7 Conn P2 Conn P3 Conn Red 12 Pin F Cable DB 9 F 12 Pin M Black Pin Signal Color Pin Signal 1 EVENT Brown 4 IN TX TX Yellow oO Ea pa EA ey RA Ea e A Table 1 7114LR12 Power Data cable pin connections OmniSTAR 7114LR12 Operator s Manual 4 1 Routing and connecting the 7114LR12 data power cable A 5 meter 16 5 foot data power cable is included with your 7114LR12 receiver see Figure 8 One end of the cable features a 90 degree connector The opposite end features a 9 pin connector Port A and a straight round 12 pin connector Port B Connect the 90 degree connector to the bare of the receiver then route the cable to the external device 7114LR12 Figure 8 7114LR12 Standard data power cable When routing the data cable avoid the following hazards e sharp ends or kinks in the cable hot surfaces exhaust manifolds or stacks e rotating or moving machinery parts e sharp or abrasive surfaces e door and window jams e corrosive fluids or gases 10 Release March 2003 4 2 Connecting to external equipment The 7114LR12 uses the RS232 protocol to communicate with external equipment The 7114LR12 is normally shipped for communicating with the following settings 9600 BPS 8 bits No pa
24. ng GGA line 1 Residuals recomputed after the GGA position was computed 3 to 14 Range residuals for satellites used in the navigation solution in meters Table 13 Description of the GRS message NOTE Because the contents of this NMEA message do not change significantly during a 1 second interval the receiver outputs this message at a maximum rate of 1 Hz 27 OmniSTAR 7114LR12 Operator s Manual GSA GPS DOP and Active Satellites The GSA message indicates the GPS receivers operating mode and lists the satellites used for navigation and the DOP values of the position solution GPGSA a X XX XX XX XX XX XX XX XX XX XX XX XX KKK KKK Field Number Description 1 Mode M Manual A Automatic 2 Current Mode 1 Fix not available 2 2D fix 3 3D fix 3 to 14 PRN numbers of the satellites used in the position solution 15 Position Dilution of Precision PDOP 16 Horizontal Dilution of Precision HDOP 17 Vertical Dilution of Precision VDOP Table 14 Description of the GSA message NOTE When less than 12 satellites are used the unused fields are null 28 Release March 2003 GST GPS Pseudorange Noise Statistics The GST sentence is used to support Receiver Autonomous Integrity Monitoring RAIM GPGST 220320 0 1 3 0 8 0 5 166 1 0 8 0 5 1 6 4F Field Number 1 2 Description UTC time of GGA fix RMS value of the standard deviation of the range inputs to the navigation pr
25. nt to share information NMEA 0183 is a simple yet comprehensive ASCII protocol which defines both the communication interface and the data format D 2 NMEA 0183 message options The OmniSTAR 7114LR12 is normally configured to output the GGA GLL GSA and VTG NMEA 0183 sentences Sentences can be added or removed at the customer s request The output rate is normally configured at a 1 second interval Table 8 NMEA 0183 message options Standard Message Description Sentence ALM GPS Almanac Data GBS GNSS Satellite Fault Detection gi GGA GPS Fir Data GLL Geographic Position Latitude Longitude GRS GPS Range Residuals GSA GPS DOP and Active Satellites GST GPS Pseudorange Noise Statistics GSV GPS Satellites in View RMC Recommended Minimum Specific GPS Data VTG Track Made Good and Ground Speed ZDA Time and Date PTNLDG DGPS Receiver Status PTNL GGK Time Position Position Type and DOP Values PTNLID Receiver Identity PTNLSM RTCM Special Message 22 Release March 2003 D 3 NMEA 0183 message format NMEA 0183 allows a single source talker to transmit serial data over a single twisted wire pair to one or more receivers listeners The NMEA 0183 protocol covers a broad array of navigational data This is separated into discrete messages which convey a specific set of information The NMEA 0183 message structure is outlined below IDMSG D1 D2 D3 D4 Dn CS CR LF p The signifies the start of mes
26. ocess range inputs include pseudoranges and DGPS corrections Standard deviation of semi major axis of error ellipse in meters Standard deviation of semi minor axis of error ellipse in meters Orientation of semi major axis of error ellipse in degrees from true north Standard deviation of latitude error in meters Standard deviation of longitude error in meters Standard deviation of altitude error in meters Table 15 Description of the GST message NOTE Because the contents of this NMEA message do not change significantly during a 1 second interval the receiver outputs this message at a maximum rate of 1 Hz 29 OmniSTAR 7114LR12 Operator s Manual GSV GPS Satellites in View The GSV sentence identifies the number of SVs in view the PRN numbers elevation azimuth and SNR values GPGSV 4 1 13 02 02 213 03 3 000 11 00 121 14 13 172 05 67 Field Number Description 1 Total number of sentences of this type in this cycle 2 Sentence number 3 Total number of SVs visible 4 SV PRN number 5 Elevation in degrees 90 maximum 6 Azimuth degrees from true north 000 72 to 359 7 SNR 00 99 dB null when not tracking 8 11 Information about second SV same format as fields 4 7 12 15 Information about third SV same format as fields 4 7 16 19 Information about fourth SV same format as fields 4 7 Table 16 Description of the GSV message NOTE Because the contents of this NMEA message do not
27. problems in the event that the 7114LR12 does not output a differentially corrected position Is unit Place unit NMEA outside with outside output clear view of with clear sky view of sky Clear line of sight Place unit towards L band outside Is power communication with clear supply Turn on replace satellite line of sight outputting power supply to satellite proper voltage Has the unit been Keep unit outside for at least outside for 45 minutes at least 45 Turn off power minutes supply disconnect cable Faulty cable Turn on power Contact OmniSTAR supply Contact Power on pins Valid subscription on OmniSTAR to 10 amp 11 receiver obtain a see figure 7 subscription Receiver on land in Faulty data cable region for which Gotoa or receiver failure subscription has valid region contact been applied OmniSTAR CUTILAUL OmniSTAR Figure 11 Troubleshooting 5 11 Contacting OmniSTAR If you encounter a technical problem during installation or system operation please contact OmniSTAR at 31 70 3170900 15 OmniSTAR 7114LR12 Operator s Manual Appendix A Specifications This chapter provides the 7114LR12 s specifications Table 2 7114LR12 specifications OmniSTAR Engine Frequency Range 1525 1560 MHz 12 channel parallel tracking L1 C A code and carrier phase filtered measurements and multi bit digitizer 1 Hz standard 2 5 10 Hz optional
28. r data cable supplies power and features a data connector for interfacing to an external device For more information see Cables and Connectors page 10 3 3 1 ASCII and TSIP Input The connection port can be used to input ASCII TSIP and CAN data from an external device ASCII data can be received from an external sensor converted into a NMEA message and exported to another device TSIP command packets are used to set and monitor GPS and Satellite DGPS parameters using the included configuration software program 3 3 2 RTCM TSIP and NMEA Output The connection port is used to output RTCM TSIP NMEA 0183 or CAN messages to an interface device TSIP is output when communicating with the included configuration software NMEA is output when exporting GPS position information to an external device such as a Pocket PC with mapping software OmniSTAR 7114LR12 Operator s Manual CAN is used when communicating over a Can bus system to other connected external devices 3 3 3 1 PPS Output The connection port can output a 1 PPS pulse per second strobe signal to synchronise the external instruments to the receiver s internal clock 3 4 Startup procedure Consider the following guidelines before starting to work with the system Normally the receiver software is already set to the user s specific requirements e Make sure that the 7114LR12 has a clear line of sight to the communication satellite e Connect the 9 pin sub D connector to a
29. rence stations on AF SAT swwwwaamwaaaazwnananwnnwamznawwanazaa 19 Table 6 Reference stations on AP Sat w wsswwmaaaawanaamwanwamanamamanamaa 20 Table 7 Reference stations on AM Sat lt wwwsammananawnanamwnawananamwmanamaa 21 Table 8 NMEA 0183 message options lt wwwwsammmaaazwnanamwanwanunamwnanazaa 22 Table 9 Description of the ALM messag cccceeeeeeeeeeeeeeeeeteenteaeees 24 Table 10 Description of the GBS message 25 Table 11 Description of the GGA message s wwswmmwaawmmzaazwaaazaa 26 Table 12 Description of the GLL message wwswmmwaamamanamwaanamwa 27 Table 13 Description of the GRS message wwwwwwwwmwmmmmmamwamamwwa 27 Table 14 Description of the GSA message wwwwwwmmmwmmmmmamwamimwaa 28 OmniSTAR 7114LR12 Operator s Manual Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Description of the GST message 29 Description of the GSV message 30 Description of the RMC message eeren 31 Description of the VTG message wwwwwwwwwmmmmammamimwa miwa 32 Description of the ZDA message wwwwwwwwwmwmmmmmamimwm mwaa 33 Description of the PTINLDG message 34 Description of the PTNL GGK message 35 Description of the PTNLID message
30. rity 1 stop bit The 7114LR12 is normally configured to output the following NMEA sentences GGA GLL GSA VTG Other NMEA sentences are available see Appendix D The software program View 3200 can be used to select different NMEA sentences see View 3200 manual Figure 9 shows the standard data power cable connection to a laptop computer Laptop comwut 7114LR12 Figure 9 7114LR12 receiver to a laptop computer Figure 10 shows the standard data power cable connection to a Pocket PC Dongle Cable 7114LR12 Figure 10 7114LR12 receiver to a Pocket PC 11 OmniSTAR 7114LR12 Operator s Manual 5 Troubleshooting This chapter covers frequently asked questions and troubleshooting techniques for the 7114LR12 receiver OmniSTAR recommends you to read through this chapter before calling technical support 5 1 Increasing GPS accuracy The 7114LR12 receiver always gives the most accurate position under the current GPS satellite differential operating conditions By manipulating various GPS masks some satellite configurations are locked out preventing less accurate positions from being computed However these changes can prevent positions from being output If your GPS application can tolerate occasional outages then more accuracy is possible by changing the various GPS receiver parameters from their default values There are many GPS receiver parameters that affect accuracy For more information see page 4 Factors
31. sage ID The Talker identification is a two letter mnemonic which describes the source of the navigation information The GP identification signifies a GPS source MSG The message identification is a three letter mnemonic which describes the message content and the number and order of the data fields ng Commas serve as eliminators for the data fields Dn Each message contains multiple data fields Dn which are delimited by commas RI The asterisk serves as a checksum delimiter CS The checksum field contains two ASCII characters which indicate the hexadecimal value of the checksum CR LF The carriage return CR and line feed LF combination terminates the message NMEA messages vary in length but each message is limited to 79 characters or less This length limitation excludes the and the CR LF The data field block including delimiters is limited to 74 characters or less 23 OmniSTAR 7114LR12 Operator s Manual D 4 NMEA 0183 Message Formats In this section each message is described in more detail ALM GPS Almanac Data The ALM message identifies the GPS week SV health and contains the almanac for one satellite One sentence per satellite up to a maximum of 32 GPALM 1 1 03 698 00 6ae6 1d 779f fdef a10d68 6469a6 7c1f62 5f583 9 43 Field Number Description 1 Total number of ALM sentences for this cycle 2 Sentence sequence number 3 SV PRN number 01 to 32 4 GPS week number 5 SV health stat
32. the difference between the actual and the expected pseudo ranges pseudo range correction or PRC In order to provide compatibility for exchanging this correction data a standard has been developed by the Radio Technical Commission for Maritime Services Special Committee 104 This standard is commonly known as RTCM SC 104 When RTCM version 2 0 correction data from the reference receiver is applied to a nearby GPS receiver the position accuracy will be substantially better than if stand alone GPS were to be used 1 1 The OmniSTAR system The 7114LR12 is one of several DGPS receivers which have been designed to work with the world wide OmniSTAR service The OmniSTAR DGPS system delivers corrections from an array of reference stations which are located all around the world see figures 2 and 3 on page 3 The RTCM correction data from these reference stations is provided to OmniSTAR s two Network Control Centres NCC where the corrections are decoded checked and repackaged in a highly efficient format for broadcast The OmniSTAR data is broadcast over a series of L band communication satellites The signal transmitted over each of these satellites contains the corrections from the reference stations in and close to the region in which this satellite can be received When a receiver with a valid subscription receives data through one of OmniSTAR s satellite channels it will output a differentially corrected position OmniSTAR 71
33. the suspect electronics while observing the GPS receiver s number of satellites being tracked or satellite s signal to noise ratio 12 Release March 2003 5 4 Choosing an mounting location The receiver must be mounted so that it has a clear view of the sky on the center line of the vehicle away from any sources of interference like electric motors See Installation page 6 5 5 Checking for cable failure To check a cable for a short use an ohmmeter The resistance of a good cable between connector pins at each end of the cable is zero If the cable checks out fine but you are confident it is the cable causing the errors swap out the cable with another known working cable if possible If the cable is defective contact OmniSTAR for a replacement 5 6 Reducing engine noise An unshielded ignition system can radiate enough noise to block reception of the OmniSTAR signal To solve this problem use resistor spark plug wires Sometimes an alternator generates noise that interferes with the signal Use bypass capacitors commonly available in automotive stores for cleaning up interference to CB and other radios If the problem persists engine components can be shielded with aluminum foil Before purchasing new engine parts make sure that there is not a PC computer or power source near the 7114LR12 receiver Some PCs and their power sources generate noise that is disruptive to the GPS amp satellite DGPS signals 5 7 Why satel
34. unananinamaanaa 22 D 3 NMEA 0183 message format ccccceceeeeeeeeceeeeeeeeeeeaeeeeeeeseteneeeeeeeeees 23 D 4 NMEA 0183 Message FOrmat5S wwwwwmwawwmwumawwamuwww mwanana 24 ALM GPS Almanac Data w swwmaaawwnanamwanzwnzanzwaaanzwaanaziaanwaaaazwnana 24 GBS GNSS Satellite Fault Detection cc ccceceeeeeeceeeeeeeeeeeeeees 25 Release March 2003 GGA GPS Fix Dai ea 26 GLL Geographic Position Latitude Longitude lt 27 GRS GPS Range Residuals ccccccceeeeeeeceeeeeeeseeeeeeeeeeeeeseennnaees 27 GSA GPS DOP and Active Satellites 28 GST GPS Pseudorange Noise Statistics lt w wwmammwaa 29 GSV GPS Satellites in View cece ceeecceceeeceeceeceeeeeeeseeceeeeeeeeseeeenenaeees 30 RMC Recommended Minimum Specific GPS Data eee 31 VTG Course Over Ground and Ground Speed w w w wwwemamamamama 32 ZDA gt Mime and Date isi a eaa ee a aa iea a Seatac 33 PTNLDG DGPS Receiver StatUS w wwwwwwwmmmmamwamemwmamawamimwwa 34 PTNL GGK Time Position Position Type and DOP Values 35 PTNLID Receiver Identity c ccccceceeeeceececeeeeeeeeeaeceeeeeseseenaeeeeeeeess 35 PTNLSM RTCM special message ccceeeeeeeeceeceeeeeeeeeesaeeeeeeeees 36 Appendix E
35. us 6 Eccentricity 7 Almanac reference time 8 Inclination angle 9 Rate of right ascension 10 Root of semi major axis 11 Argument of perigee 12 Longitude of ascension node 13 Mean anomaly 14 A f0 clock parameter 15 A f1 clock parameter Table 9 Description of the ALM message 24 Release March 2003 GBS GNSS Satellite Fault Detection The GBS sentence is used to support Receiver Autonomous Integrity Monitoring RAIM GBS 183059 30 0 0 0 0 0 0 0 0 0 0 0 0 6F Field Number 1 OuakWND N Description UTC time of the GGA or GNS fix associated with this sentence Expected error in latitude Expected error in longitude Expected error in altitude ID number of most likely failed satellite Probability of missed detection for most likely failed satellite Estimate of bias in meters on most likely failed satellite Standard deviation of bias estimate Table 10 Description of the GBS message NOTE Because the contents of this NMEA message do not change significantly during a 1 second interval the receiver outputs this message at a maximum rate of 1 Hz 25 OmniSTAR 7114LR12 Operator s Manual GGA GPS Fix Data The GGA message includes time position and fix related data for the GPS receiver GPGGA hhmmss s Ill Illla yyyyy yyyy a X XX X X X X M x X M X X XXXX Field Number Description 1 UTC of Position 2 3 Latitude N North or S South 4 5 Longitude E East or W West
36. y OmniSTAR or its authorised dealers to the original purchaser or end user OmniSTAR assumes no responsibility for any consequential or incidental losses or damages of any nature with respect to the use of this product Release March 2003 1 Introduction The Global Positioning System GPS is a reliable continuous all weather navigation system which is operated by the United States Government At the time of writing the space segment of GPS includes a constellation of 28 satellites which orbit the earth at an altitude of approximately 22 000 km These satellites Space Vehicles or SV s transmit radio signals containing precise satellite time and position information By receiving four or more of these signals a 3 dimensional position can be computed Although GPS provides an acceptable level of performance for some users many applications demand a more reliable and precise position than GPS alone can provide In such cases Differential GPS DGPS must be used The purpose of DGPS is to minimise the effects of atmospheric and satellite errors on the position determination In order to achieve this a reference GPS receiver must be installed at a point of known co ordinates This receiver uses the radio signals from each of the GPS satellites which are in view to measure so called pseudo ranges to these satellites Because the exact locations of the satellites and the reference receiver are known it is then possible to determine
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