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Trimble Outdoors AgGPS 252 User's Manual

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2. 10 Differential GPS positioning DGPS 11 Autonomous GPS positioning 12 Sources of Error in GPS Positioning 13 Coordinate systems 14 3 Installing the Receiver 17 System Components 18 Optionalextfa 4 cedia ue Re Parent 18 MountingtheReceiver 19 Choosingalocation 19 Environmental conditions 20 Electrical interference 20 Connecting to an External Device 21 AgGPS 252 Receiver User Guide v Contents vi Connectors and Pinouts 24 lom MD 24 Prec 25 Configuring the Receiver 27 AgRemote Home Screen 28 Configuring Differential 5 28 OmniSTAR 649d cain eum ur AEN que PAL ee a 29 WAAS EGNOS ac actos d ro Od oe REC ROG Roe C E 30 Configuring the AgGPS 252 Receiver to Operate in RTK Mode 31 Configuring the Communication Ports 31 Configuring input output communication 32 Troubleshooting 37 Problems and Solutions 37 Troubleshooting Flowcharts
3. y yo UNL enunuo SX gt uomsod qe e 10J seop jj 549 S S see ye MOU 1349991 BU S MIS BY JO 51 eu jeu ens aye 1890 NOK 1oe1u02 HEUDMOI SIU 01 LANL peAjose1 si uondeoo1 549 eu ueuw ueuowop pue wa s s ou ees 4 SOA 1seo je 18118981 eu s uondeoe 54 10 U8819S eui xeu 4 SOA iuaeJ0s JO 19418991 au UO amp IISIA U S A SOA uO U9919S eui si 3H3H 19715 Using AgRemote to troubleshoot GPS reception third party device attached Figure 6 3 49 AgGPS 252 Receiver User Guide Troubleshooting Flowcharts Jejeseg 1890 Jno 128 u05 HVLSIUWC eu jou seylleres 549 5 49418991 941 1800 4NOK 1021 00 s sisued y mau sunoy 10 5 pue 13418981 au dn jag jo jno eq HYLSIUWIO 241 equi 1220 4NOA Joeu09
4. 45 Specifications 53 ABGPS 252 RECEIVED vds dere anus pus db Ed ut 53 GPS Channels i shui 4 eme mee dx p RE RES este 54 L Band Satellite Differential Correction Receiver 55 Receiver Default Settings 56 Third Party Interface Requirements 57 Third Party Software 57 Third Party Hardware 58 Index oa m REO OSS Sas e ec C C 61 AgGPS 252 Receiver User Guide CHAPTER 1 Introduction Welcome to the AgGPS 252 Receiver User Guide This manual e Describes how to install and configure the Trimble AgGPS 252 receiver e Provides guidelines for connecting the receiver to an external device e Provides guidelines for using the AgRemote utility to view and configure the receiver correction sources and other operating parameters Even if you have used other Global Positioning System GPS products before Trimble recommends that you spend some time reading this manual to learn about the special features of this product If you are not familiar with GPS go to the Trimble website at www trimble com for an interactive look at Trimble and GPS AgGPS 252 Receiver User Guide 1 1 2 Introduction Warnings Always follow the instructions that accompany a warning A WARNING Indicates a potential hazard or unsafe practic
5. eu Ajasnoas e qeo samodeyep eui 51 ON UO U8819s 10 19418981 S 19018 Troubleshooting system hardware and power 1 6 igure F 47 AgGPS 252 Receiver User Guide Troubleshooting Flowcharts 1 sysisiod eu 98109 Buom eq sieodde uondese1 Sd9 941 ejquiur 1890 Jno 9809 sisised y g ees asiou uo uogeuuojul 104 esiou Aq pesneo wajqoid 241 4 ON seaddesip Seyljeres oq useos eui y y pue uo WNL SO eoo Ano joe UO sysisiod eu j eq sieedde uondeoe Sd 941 200 yoRUOD peAjoseuun s Wejqoid eu seuleres 1520 ye 19410991 51 uondeoe1 Sd xoeuo pue eui 0 Sd oyoeu 10 yo iseeres v sea ye Buryoen 18118901 BU S uondeoe 49 xoeuo pue 5 0 12201 jno
6. OmniSTAR HP VBS6 AgGPS 252 Receiver User Guide 13 2 Overview Table 2 5 Factors that influence the accuracy of GPS positions continued Condition Optimum Description value Minimum gt 10 Satellites that are low on the horizon typically produce weak elevation and noisy signals and are more difficult for the receiver to track Satellites below the minimum elevation angle are not tracked Multipath Low Multipath errors are caused when GPS signals are reflected off environment nearby objects and reach the receiver by two or more different paths The receiver incorporates the EVEREST multipath rejection option RTCM compatible corrections These corrections are broadcast from a Trimble AgGPS 214 MS750 or equivalent reference station RTK Base station coordinate accuracy For RTK positioning it is important to know the base station coordinates accurately Any error in the position of the base station affects the position of the rover every 10 m of error in a base station coordinate can introduce up to 1 ppm scale error on every measured baseline For example an error of 10 m in the base station position produces an error of 10 mm over a 10 km baseline to the rover For more information about how to make sure the position of your base station is accurate refer to the manual for your base station receiver Multiple RTK base stations If you are using several base stations to provide RTK corr
7. ens JON ON Se ae a fejdsip mou uaeJos JO 1 eu seoq anuju euo PEM a nupuog 220 108 U09 sjsisied uie qoid eu enuquog pue parene 4ueuno si soyues uonduosqns HYLSIUWO Jnof yey euns 458 10 abe upu g ayy 81 10 04 Sd9q eu s 5 YoU Jo aby SdOG jo HYLSIULO eui ym Buyepequi eq Burgeuog 10 9 ones esiou oj N S eu s ujBuens eyie1es 10 U9919S eu SIU 0 UunjeJ si uondeoei 549 ueuM ueuovoy 545 ees 19185 Sdod 20 S eui seoq ye 19110001 eu S uondeoo1 Sd9 10 05 eu 49949 3U3H LYVLS itioning Using AgRemote to troubleshoot OmniSTAR pos 50 AgGPS 252 Receiver User Guide Figure 6 4 Troubleshooting Flowcharts jeooj pue sniels 10 eui sa pue uoneis eseq 0
8. Call 31 497 53 24 30 and ask for the WEEE Associate Or mail a request for recycling instructions to Trimble Europe BV c o Menlo Worldwide Logistics Meerheide 45 5521 DZ Eersel NL Declaration of Conformity This product conforms to the following standards and therefore complies with the requirements of the R amp TTE Directive 1999 5 EC which specifies compliance with the essential requirements of EMC Directive 89 336 EEC and Low Voltage Directive 73 23 EEC EMC Emissions EMC Immunity EN 55024 1998 Safety EN 60950 2000 Mark First Applied 03 BSEN 55022 1998 W A1 00 Class A The technical file is maintained at Trimble Navigation Limited 749 North Mary Avenue PO Box 3642 Sunnyvale CA 94088 3642 USA Contents Introduction wu kw ROO o 1 ane co e Wk Epp oed b ee he Et 2 Related Information 2 Technical Assistance se us RR RI na kae Rao a Ges 2 Your COMMENTS x22 oru e Ie gem ede E ede RUE 2 2 3 OVeKVEBU vou nu dou oW ow ee Am e ON 3 Standard Features of the AgGPS 252 Receiver 4 Receiver Connections iss dus oe 4 5 Receiver Input Output 6 EED EN ea ia 8 GPS Positioning Methods 9 RTK GPS positioning
9. following sources e WAAS EGNOS free service limited availability The Wide Area Augmentation System WAAS augments GPS with additional signals for increasing the reliability integrity accuracy and availability of GPS in the United States The European Geostationary Navigation Overlay System EGNOS is the European equivalent of WAAS 28 AgGPS 252 Receiver User Guide Configuring the Receiver 4 OmniSTAR paid subscription available worldwide You can use this paid service as an alternative to WAAS EGNOS It provides over the air DGPS activation For more information see Differential GPS positioning DGPS page 11 OmniSTAR The AgGPS 252 receiver can use OmniSTAR corrections To do this you need to configure the receiver and purchase an OmniSTAR subscription Note To track the OmniSTAR satellite the receiver must be outside with a clear view of the sky turned on and configured to receive OmniSTAR VBS or HP corrections To use the AgRemote utility to activate an OmniSTAR subscription l Connect the AgGPS 252 receiver to the computer Turn on the receiver and start the AgRemote utility For instructions on how to use AgRemote refer to the AgRemote documentation In AgRemote select Configuration DGPS Config Set the Source Select field to one of the following Omnistar HP Ommnistar VBS Set the EZ Sat Omni field to the area you are operating in For example if you are working in Californi
10. joe uoo aysisiod j SHEU2MOI ALH 10 SEA HVLSIUUIO 99 995 f Sd9 uomsod qe e 104 ag a Aejdsip uee1os mou seyljeres Buiaiaoas eui JO eu jeu euns ayeyy SIU uunjeH 1 si uondeoe 549 ueyM pue eu ees le 1seo ye Bupjoey 13419991 au 51 8545 10 au SOA iuo ueaJos eui S 343H 19715 5 74 a 5 DT t2 wn 5 2 g gt To 5 et o c lt as c c D Figure 6 2 48 AgGPS 252 Receiver User Guide Troubleshooting Flowcharts e20 1NO asisiod uiejqoud eu JI 10 SA HVLSIUUO 99 5 290 INCA eq Aew au ejquuuL 1890 1no 12e1u09 sysisiod uie qoud eui j eq
11. sysisiad eu g sadeyo eos asiou Bulonpa uo 104 esiou ensseoxe pesneo eq Aew ay eiquiur 1890 nof 1981002 1 SeA i1eeddesip seyjjeyes eu oq eux yoayo pue y uo SS800 Apeay 18p098q 1 1eposeq amp Buimoljo au jo euo snjas 51 amp peuidxe eu e pue dos ees Iun 5594 eiquiu 1220 jno 1020 si 91 1 f HVLSIUWIO Buiuonisod 5498 10 jueloiyns jou pjo 10 941 see Bujna aay uondeoe 546 xoeuo pue U9819S eu seynutu 166281 549 eu amod urejureui 1019 10 euiquioo eu yo ON Buiwol oj Jo s y ees nof oq smeis HYLSIUWO yoayo oj A e20 jogjuoo asisied Anoeuoo sieedde uiejs s ayy pelqeus S SSeid 099105 eu peu SA
12. 1 Hz 50166 or Cebis Yield 9600 30945 plus Monitor 50581 AGCO AGCO NMEA GGA VTG 4800 8 N 1 1 Hz 39903 plus FieldStar GSV GSA 50581 Yield Monitor 4 1 P N 39903 replaced old Ag Leader cable P N 30660 2 Connect to Aux port 3 Older GreenStars with version 5 3P mapping processor software require 9600 baud Older GreenStars with version 5 3R mapping processor software require 4800 baud 4 AGCO unit requires a null modem RS 232 connection Ag Leader cable P N 39903 is wired correctly for connection 60 AgGPS 252 Receiver User Guide Index Numerics 1 PPS output 7 A accuracy 4 10 adapter cable 21 AFS Yield Monitor 59 Ag Navigator 58 AGCO FieldStar Yield Monitor 60 AgGPS 170 Field Computer 4 33 AgRemote utility 27 activating OmniSTAR 29 configuring ports 32 downloading 27 for RTK mode 31 Home screen 28 no GPS position 40 troubleshooting 44 viewing and configuring settings 1 WAAS EGNOS 30 web document 28 AgView 57 Aim Navigator 58 altitude 13 AMS 58 antenna electricalinterference 20 location of 19 mounting 20 ASCII input 6 Autopilot connectingto 21 24 battery real time clock 43 C cables 6 avoiding bent 21 connection diagram 22 external device 21 pinout 24 routing 22 SiteNet radio 21 third party hardware 58 third party software 57 troubleshooting 43 CAN bus protocol 4 7 casing specification 53 Caterpillar Cebis Yield Monitor 60 centimeter level accuracy 10 changing battery 43 correction
13. 115 000 gt AgRemote 1 Ag252 O xl File Help Trimble Figure 4 2 Communication settings 32 9 5 252 Receiver User Guide Configuring the Receiver 4 Configure the Port Input Output communication settings for communicating with the AgGPS Autopilot other external hardware devices and software programs Table 4 1 describes the input settings Table 4 1 Port input settings Setting Description None Inputs nothing to the receiver TEXTB The receiver can accept ASCII data from an external device such as a chlorophyll meter on Port A merge it with NMEA GPS data and output the combined data on Port B The incoming data must be limited to 66 ASCII characters and terminated by a carriage return and line feed hex characters 0x0D 0x0A The NMEA string outputs as PTNLAGO01 lt up 66 ASCII characters 2 digit checksum gt lt CR gt lt LF gt For the receiver to output the combined NMEA string NMEA must be selected as the output protocol on Port B TEXTA See the description for the TEXTB setting above TEXTA input outputs text on Port A The default port settings are 8 N 1 TSIP 38 4 K These may vary by product RTCM The receiver can accept RTCM data from an external DGPS device such as an external radio TSIP The receiver can accept or output TSIP data packets from the port when using the optional AgRemote program or using the AgGPS 170 Field Computer RtkLnk The recei
14. Increase the separation between the equipment and the receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Changes and modifications not expressly approved by the manufacturer or registrant of this equipment can void your authority to operate this equipment under Federal Communications Commission rules Europe This product has been tested and found to comply with the requirements for the European Directive 75 322 EEC as amended by 2000 2 EC thereby satisfying the requirements for e mark compliance for use in agricultural vehicles in the European Economic Area EEA ell 022054 This product has been tested and found to comply with the requirements for a Class A device pursuant to European Council Directive 89 336 EEC on EMC thereby satisfying the requirements for CE Marking and sale within the European Economic Area EEA N Warning This is a Class product In a s domestic environment this product may cause radio interference in which case you may be required to take adequate measures Notice to Our European Union Customers For product recycling instructions and more information please go to www trimble com environment summary html Recycling in Europe To recycle Trimble WEEE Waste Electrical and Electronic Equipment products that run on electrical power
15. SOA 1 ON H 10 4 e dsip eu seoq mou suonoeuoo aly uoneis eseq pue y uae eq 1461 jo 18919 SI 0 1818981 Y IAOW ON uonn os HLH Ue 10 10 1 ejdsip y seoq Buinisoei eq pinoys uo ay y 1H Bua SI 18A18981 au JEU YOBYD epin siu SI Sq ueuw apind uondeoeH Sd ees A Esoujoyes 1929 je 18118081 eu S uondeoo 545 10 uee10s eui Y09949 uondo ALY OU e1sur pue ureiqO SO 4 ON 34 1219901 Y peleisu uondo SI 343H 19715 Using AgRemote to troubleshoot RTK Figure 6 5 51 AgGPS 252 Receiver User Guide Troubleshooting Flowcharts 52 AgGPS 252 Receiver User Guide APPENDIX Specifications AgGPS 252 Receiver Table A 1 lists the physical characteristics of the AgGPS 252 combined GPS DGPS receiver and antenna Table AgGPS 252 receiver Item Description Size 300 mm 11 7 in wide x 309 mm 12 05 in deep x 70 mm 2 73 in high Weight 2 1 kg Power Nominal
16. is the NMEA standard format and is commonly used worldwide for data transfer between electronic equipment AgGPS 252 Receiver User Guide 7 2 Overview LED Indicator The AgGPS 252 receiver has an LED light that shows the status ofthe receiver The following tables describe the light sequences for each positioning method Table 2 1 LED sequences with Satellite Differential GPS or Autonomous positioning LED color LED flash Status Off Off No power Green Solid Normal operation computing DGPS positions Green Slow No DGPS corrections computing DGPS positions using old corrections Green Fast No DGPS corrections approaching DGPS age limit computing DGPS positions using old corrections Yellow Solid DGPS corrections being received but DGPS positions not yet being computed computing autonomous GPS positions Yellow Slow No DGPS corrections computing autonomous GPS positions Yellow Fast Not enough GPS signals not tracking enough satellites to compute position Note WAAS EGNOS and OmniSTAR VBS use the Satellite Differential GPS positioning method Table 2 2 LED sequences with RTK positioning LED color LED flash Status Off Off No power Green Solid Normal operation computing fixed RTK positions Green Slow Receiving CMR corrections but not initialized computing float RTK positions Green Fast No CMR corrections computing RTK position using old corrections 8 AgGPS 252 Receiver User Guide Overvi
17. receiver connector ports The two connectors Port A and Port B can perform the following functions accept power e accept TSIP RTCM ASCII and if enabled CMR inputs e output RTCM TSIP and NMEA messages e output 1 PPS signals AgGPS 252 Receiver User Guide 5 2 Overview provide support for the J1939 CAN serial bus For more information about the inputs outputs and LED indicators see the information in the rest of this section Receiver Input Output The AgGPS 252 receiver data power cable P N 50166 connects to a receiver connector port to supply power It also enables the following data exchanges TSIP RTCM and ASCII input from an external device The receiver is able to receive ASCII data from an external device convert this data into an NMEA message and export the message to another device TSIP command packets configure and monitor GPS and DGPS parameters The receiver is also able to accept RTCM data from an external device such as a radio CMR input from an external device If the receiver is to be used in RTK mode set the port that is connected to the radio to the RtkLnk protocol This protocol enables the receiver to receive CMR messages TSIP and NMEA output to an external device When you are using an external radio the receiver can also receive DGPS corrections TSIP is input output when communicating with AgRemote NMEA is output when the receiver is exporting GPS position information
18. source 29 port setting and protocol 33 characteristics 53 Class A digital device FCC notice iii AgGPS 252 Receiver User Guide 61 Index CMR corrections for RTK 10 33 54 input 6 LED sequences 8 COM port 44 compliance specification 54 components 18 configuring RTK 31 WAAS EGNOS DGPS 30 connecting to external devices 21 connector ports see ports connectors 6 specification 53 Contour 58 Controller Area Network bus protocol see CAN bus protocol convergence 12 coordinate systems 14 correction source changing 29 corrections free or subscription 11 D data power cable 6 Declaration of Conformity iii default settings receiver 56 Differential GPS DGPS positioning method 11 configuring 31 if accuracy poor 38 E EGNOS accuracy 10 DGPS configuring 30 website 11 electrical interference sources of 20 62 AgGPS 252 Receiver User Guide elevation 14 Elevation mask 38 enhancements 18 environmental conditions for receiver 20 ephemeris satellite history file 13 European Geostationary Navigation Overlay System see EGNOS European Space Agency website 11 expiry date OmniSTAR VBS 50 external devices connecting to 21 F factory defaults 43 Falcon 58 Falcon with Falcon Track LBAR 59 FarmGPS 57 FCC notice Class A digital device iii features 4 Federal Aviation Administration website 11 Field Rover 57 Field Worker Pro 57 FieldLink DOS 57 FieldLink Windows 57 FlashLoader 200 utility troublesh
19. sure the rover is in a clear area Loss of initialization In RTK mode initialization can be lost when the rover receiver is close to trees or buildings and the number of satellites falls below four Additionally initialization may be lost if the receiver has not been tracking RTK corrections for some time For more information see the next item Move away from trees and obstructions to initialize Once initialized approach the obstructed area again If the obstructions are severe GPS positioning may not work in that area Because the GPS satellites move there may be times of the day when you are working in an area with obstructions For more information see the Trimble Planning software on the Trimble website www trimble com 40 AgGPS 252 Receiver User Guide Troubleshooting 5 Problem Possible solution Not tracking RTK corrections The radio link is down or Ensure that the line of sight between the base and rover intermittent receivers is not obstructed Ensure that the rover receiver is within range ofthe radio Ensure that the radio power supply is on AgGPS 252 Receiver User Guide 41 Troubleshooting Interference Problem Possible solution Strong magnetic fields Strong magnetic fields have no effect on GPS or satellite DGPS signals However some computers and other electric equipment radiate electromagnetic energy that can interfere with a GPS receiver If
20. the AgGPS 252 receiver for operation in RTK mode To configure the receiver 1 Connect the AgGPS 252 receiver to the computer Turn on the receiver and start the AgRemote utility In AgRemote select Configuration DGPS Config Set the Source Select field to RTK Press 4 then 5 to complete this part of the procedure a Ww nm For RTK operation connect the radio to a port Change the port input settings for that port to RtkLnk Configuring the Communication Ports Ifthe AgGPS 252 receiver is to be connected to an external device configure Ports A and B so that the proper data type is input to and output from the receiver AgGPS 252 Receiver User Guide 31 4 Configuring the Receiver To configure Port A 1 Connectthe AgGPS 252 receiver to the computer Turn on the receiver and start the AgRemote utility 2 In AgRemote select Configuration Port A Config 3 Use the menu commands to configure the communication ports Ensure that the receiver outputs the correct GPS position data type for the hardware device or software program that is connected to the receiver To configure Port B e Repeat the above steps but in Step 2 select Configuration B Config Configuring input output communication The port input and output settings appear in the first screen In Figure 4 2 the port is set to accept TSIP inputs at a baud rate of 115 000 with a parity of 8 Odd 1 The outputs are TSIP also at a baud rate of
21. to an external device such as a yield monitor or to a mapping software program For more information on the National Marine Electronics Association NMEA and Radio Technical Commission for Maritime Services RTCM communication standard for GPS receivers go to the following websites WwNW nmea org 6 AgGPS 252 Receiver User Guide Overview 2 www rtcm org On the Trimble website www trimble com refer to the document called NMEA 0183 Messages Guide for AgGPS Receivers e 1PPS output To synchronize timing between external instruments and the internal clock in the receiver the connection port outputs a strobe signal at 1 PPS pulse per second To output this signal the receiver must be tracking satellites and computing GPS positions J1939 CAN bus Both connection ports on the receiver support the J1939 Controller Area Network CAN bus protocol This protocol standardizes the way multiple microprocessor based electronic control units ECUs communicate with each other over the same pair of wires It is used in off highway machines such as those used in agriculture construction and forestry For more information go to the Society of Automotive Engineers SAE International website at www sae org servlets index e ISO 11783 messages Both CAN ports support some ISO 11783 messages Position output format The AgGPS receiver outputs positions in Degrees Minutes and Decimal Minutes DDD MM m This
22. tracks the correct beam based on receiver geographic location If the receiver is manually changed automatic tracking is deactivated until you perform a hard reset or firmware flash When a satellite subscription is activated the Home screen displays D 3D AgGPS 252 Receiver User Guide 39 5 Troubleshooting Problem Possible solution No GPS position output from the receiver after connecting to AgRemote When the receiver is connected to the AgRemote utility AgRemote automatically resets the port communication settings on the receiver to 8 O 1 TSIP 115 K for both input and output This enables optimal communication with an office computer If the receiver is to work with an Autopilot system however the receiver port communication settings must be 8 N 1 TSIP 38 4 K To work with some other devices and software programs the receiver port communication settings must be 8 N 1 NMEA 4800 If AgRemote has changed the settings you will need to change them back manually Connect AgRemote Then reset the port communication settings to NMEA output For more information see Configuring the Communication Ports page 31 Long time to initialize In RTK mode longer baselines require longer initialization times The baseline is the distance between the base receiver and the rover receivers Wait for the receiver to initialize or consider repositioning the base receiver to shorten the baseline Make
23. you suspect interference from a local magnetic field move the receiver away from or turn off the suspect electronics while observing the number of satellites being tracked on the receiver or the signal to noise ratio SNR of the satellite If the SNR goes up when the electronics are turned off there may be interference from the local electronics FM 2 way radios Transmitting FM 2 way radios can interfere with OmniSTAR WAAS and GPS signal reception Make sure that there is at least 1 m 3 ft between the FM 2 way radio antenna and the receiver Engine noise An unshielded ignition system can cause enough noise to block reception of a differential signal Use resistor spark plug wires on the vehicle ignition system An alternator can cause noise that interferes with a differential signal Use bypass capacitors commonly available in automotive stores for cleaning up interference to CB and other radios If the problem persists shield engine components with aluminum foil Relocate the antenna on the machine Determine the optimal antenna location by watching the SNR value on the AgRemote Home screen Note Before replacing engine parts in an attempt to solve this problem make sure that the problem is not caused by a computer or power source near the receiver Some computers and their power sources cause noise that disrupts GPS and satellite DGPS signals 42 AgGPS 252 Receiver User Gui
24. 2 until Yes appears Press The factory default settings are restored The DGPS service subscription is not lost AgGPS 252 Receiver User Guide 43 5 Troubleshooting AgRemote utility Problem Possible solution AgRemote cannot communicate Make sure that with the receiver All you see is a the receiver is connected to a 12 32 V DC power source blank screen all cable connections between the receiver and the computer are secure you are using the correct COM port Select File Connect FlashLoader 200 upgrade utility Problem Possible solution The FlashLoader 200 upgrade utility sure that cannot detect the receiver or Other programs such as AgRemote and Microsoft download the firmware ActiveSync technology are not using the COM port that the computer is using The receiver is connected to a 12 32 V DC power source cables are connected correctly between the device and the computer The receiver is connected to the correct computer COM port To do this From the FlashLoader 200 menu select Settings Select the check box for a serial link 3 At Port select Auto Click OK 4 Select the Upload firmware to receiver Proceed 6 From the Auto Port Select dialog Use receiver on port OK Once you have checked this turn off the receiver then turn it on again Try again to connect FlashLoader 200 44 AgGPS 252 Receiver User Guide Troubleshoo
25. 350 mA at 12 V DC Operating temperature 30 22 F through 70 C 158 F Storage temperature 40 C 40 F through 85 C 185 F Humidity Complies with Mil 810E Method 507 3 Procedure 11 Aggravated Cyclic Humidity Ten 24 hour cycles of constant 9596 RH with cycling temperature and dwells 30 C 86 F and 60 C 140 F Unit sealed to 5 PSID Casing Low profile UV resistant plastic Dust proof waterproof shock resistant with recessed protected connectors Connectors 12 pin Deutsch connectors AgGPS 252 Receiver User Guide 53 A Specifications Table A 1 AgGPS 252 receiver continued Item Description Ports Two connection ports both of which support RS 232 and CAN Mounting Three holes for 10 mm 0 39 in bolts Compliance FCC Part 15 Class A C Tick E mark CE mark GPS Channels Table A 2 lists the performance characteristics of GPS channels Table A 2 GPS channels performance Item Description General 12 channel parallel tracking L1 1571 42 MHz and L2 1227 60 MHz C A code and carrier phase filtered measurement Update rate 1 5 10 Hz RTK speed accuracy 0 16 kph 0 10 mph RTK position accuracy Horizontal 2 5 cm 0 98 in 2 ppm 2 sigma and vertical 3 7 cm 1 46 in 2 ppm 2 sigma if all of the following criteria are met At least 5 satellites PDOP 4 CMR corrections Standard form
26. 6 OmniSTAR 12 RTCM 7 SAE International 7 Trimble 1 WAAS 11 weight specification 53 Wide Area Augmentation System see WAAS Y YM2000 Yield Monitor 59 66 AgGPS 252 Receiver User Guide
27. BLE NAVIGATION LIMITED OR ANYONE WHO HAS BEEN INVOLVED IN ITS CREATION PRODUCTION INSTALLATION OR DISTRIBUTION INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TITLE AND NONINFRINGEMENT THE STATED EXPRESS WARRANTIES ARE IN LIEU OF ALL OBLIGATIONS OR LIABILITIES ON THE PART OF TRIMBLE ARISING OUT OF OR IN CONNECTION WITH ANY PRODUCTS OR SOFTWARE SOME STATES AND JURISDICTIONS DO NOT ALLOW LIMITATIONS ON DURATION OR THE EXCLUSION OF AN IMPLIED WARRANTY SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU TRIMBLE NAVIGATION LIMITED IS NOT RESPONSIBLE FOR THE OPERATION OR FAILURE OF OPERATION OF GPS SATELLITES OR THE AVAILABILITY OF GPS SATELLITE SIGNALS Limitation of Liability TRIMBLE S ENTIRE LIABILITY UNDER ANY PROVISION HEREIN SHALL BE LIMITED TO THE AMOUNT PAID BY YOU FOR THE PRODUCT OR SOFTWARE LICENSE TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW IN NO EVENT SHALL TRIMBLE OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHATSOEVER UNDER ANY CIRCUMSTANCE OR LEGAL THEORY RELATING IN ANY WAY TO THE PRODUCTS SOFTWARE AND ACCOMPANYING DOCUMENTATION AND MATERIALS INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF BUSINESS PROFITS BUSINESS INTERRUPTION LOSS OF BUSINESS INFORMATION OR ANY OTHER PECUNIARY LOSS REGARDLESS WHETHER TRIMBLE HAS BEEN ADVISED OF THE POSSIBILITY OF ANY SUCH LOSS AND REGARDLESS OF
28. MEA Baud Other Pos Cable P N messages rate Falcon w Ag Chem NMEA GGA VTG 19200 8 N 1 10Hz Falcon Track LBAR Swath Smart Raven Starlink NMEA GGA VTG 19200 8 N 1 10hz orRGL500 manufactured or RMC 50166 or LB 5 for 30945 plus Raven 50581 LB 3 LB 4 Starlink NMEA GGA VTG 19200 8 N 1 10hz and LB 5 or RMC YM2000 Ag Leader NMEA VTG 4800 8 N 1 1Hz 39903 plus Yield 50581 Monitor PF3000 Yield Ag Leader NMEA VTG 4800 8 N 1 1 Hz 39903 plus Monitor 50581 PF3000Pro Ag Leader NMEA VTG 4800 8 N 1 1Hz 39903 plus Monitor 50581 without internal GPS 2 AFS Yield Case IH NMEA GGA VTG 4800 8 N 1 1Hz 32609 plus Monitor Ag Leader 50581 YM2000 AFS Yield Case IH YMIU NMEA GGA VTG 4800 8 N 1 1Hz 32609 plus Monitor yield monitor 50581 interface unit manufactured by Ag Leader for Case IH GreenStar John Deere NMEA GGA GSA 4800 8 N 1 1Hz 34189 plus Yield RMC 50581 Monitor 3 New Holland New Holland NMEA GGA VTG 4800 8 N 1 1Hz 39903 plus Yield Ag Leader 50581 Monitor PF3000 AgGPS 252 Receiver User Guide 59 B Third Party Interface Requirements Table B 2 Third party hardware interface requirements continued Hardware Company Protocol NMEA Baud Other Pos Cable P N messages rate VCD Vision Rockwell NMEA GGA GLL 4800 8 N 1 1 Hz 50166 or Display VTG ZDA 30945 plus Controller 50581 Swath XL Midtech NMEA GGA 19200 8 N 1 5Hz 50166 or 30945 plus 50581 Caterpillar Claus NMEA GGA 4800 8 N 1
29. S positioning methods GPS positioning Corrections used Approximate absolute accuracy method Real Time Kinematic Trimble CMR corrections 2 5 cm 0 98 in 2 ppm horizontal RTK GPS broadcast by a local accuracy base station 3 7 cm 1 46 in 2 ppm vertical accuracy Satellite Differential GPS OmniSTAR VBS 78 cm 30 71 in Satellite Differential GPS WAAS EGNOS 95 cm 37 40 in OmniSTAR HP OmniSTAR HP 10 cm 3 94 in after the signal has fully Differential GPS converged 1 Convergence time can vary depending on the environment Time to the first fix submeter accuracy is typically lt 30 seconds time to the first high accuracy fix lt 10 cm accuracy is typically lt 30 minutes For more information about each positioning method see below RTK GPS positioning The AgGPS 252 receiver uses the RTK positioning method to achieve centimeter level accuracy To use the RTK method you must first set up a base station The base station uses a radio link to broadcast RTK corrections to one or more rover receivers The AgGPS 252 receiver is a rover receiver so another compatible receiver such as a Trimble MS750 or AgGPS 214 GPS receiver must be used as the base station The rover receiver uses RTK corrections from the base station to calculate its position to centimeter level accuracy As part of this process the rover receiver must calculate an initialization This takes a few seconds While the receiver is initial
30. THE COURSE OF DEALING WHICH DEVELOPS OR HAS DEVELOPED BETWEEN YOU AND TRIMBLE BECAUSE SOME STATES AND JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES THE ABOVE LIMITATION MAY NOT APPLY TO YOU NOTE THE ABOVE LIMITED WARRANTY PROVISIONS MAY NOT APPLY TO PRODUCTS OR SOFTWARE PURCHASED IN THE EUROPEAN UNION PLEASE CONTACT YOUR TRIMBLE DEALER FOR APPLICABLE WARRANTY INFORMATION Notices USA NOTE FCC Part 15 rules paragraph 15 105 This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation ofthis equipment in a residential area is likely to cause harmful interference in which case you the user will be required to correct the interference at your own expense Ifthis equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more ofthe following measures Reorient or relocate the receiving antenna
31. User Guide AgGPS 252 Receiver Version 1 00 Revision B Part Number 55510 00 ENG August 2005 Trimble Contact Information Trimble Navigation Limited Agriculture Business Area 9290 Bond Street Suite 102 Overland Park KS 66214 USA 1 913 495 2700 Phone trimble_support trimble com www trimble com Legal Notices 2004 2005 Trimble Navigation Limited rights reserved Trimble the Globe amp Triangle logo and AgGPS are trademarks of Trimble Navigation Limited registered in the United States Patent and Trademark Office and other countries EVEREST MS750 and SiteNet are trademarks of Trimble Navigation Limited Microsoft and ActiveSync are either registered trademarks or trademarks of Microsoft Corporation in the United States and or other countries All other trademarks are the property of their respective owners Release Notice This is the August 2005 release Revision B ofthe AgGPS 252 Receiver User Guide part number 55510 00 ENG It applies to version 1 00 of the AgGPS 252 receiver The following limited warranties give you specific legal rights You may have others which vary from state jurisdiction to state jurisdiction Hardware Limited Warranty Trimble Navigation Limited warrants that this hardware product the Product will perform substantially in accordance with published specifications and be substantially free of defects in material and workmanship for a period of one 1 year start
32. a select N America West Press 4 then 5 to complete the procedure Obtain an OmniSTAR licence from OmniSTAR All licenses are activated over the air Contact OmniSTAR on 1 888 883 8476 USA or Canada and provide the following details your billing information AgGPS 252 Receiver User Guide 29 4 Configuring the Receiver serial number satellite beam name OmniSTAR will activate the receiver Activation can take 5 30 minutes WAAS EGNOS WAAS is a free satellite based DGPS service that is available only in North America EGNOS is a free satellite based DGPS service that is available only in Europe To use the WAAS EGNOS DGPS signal you must first configure the receiver 1 Connect the AgGPS 252 receiver to the computer Turn on the receiver and start the AgRemote utility 2 In AgRemote select Configuration DGPS Config 3 Setthe Source Select field to WAAS 4 Press 4 then 5 to complete the procedure To enable WAAS reception in the field 1 Take the receiver outside Make sure that it has a clear southeast and southwest view of the sky 2 Turn the receiver WAAS activation can take two or more minutes Once activation succeeds the Home screen displays D 3D 30 AgGPS 252 Receiver User Guide Configuring the Receiver 4 gt AgRemote 1 Ag252 xl File Help Q Trimble TF Configuring the AgGPS 252 Receiver to Operate in RTK Mode Use the AgRemote utility to configure
33. able 3 3 Port A pinout continued Pin Name Function Comments 5 Signal GND Used for RS232 and other signals Should not be connected to V battery negative 6 Port 1 RTS OUT 7 Event OUT Alarm OUT 8 Port 1 CTS IN 9 Event IN 10 V IN 11 V IN 12 CAN A Low I O Port B This port has the same connector as Port A see above Viewed from outside the receiver the Port B connector is on the right It is the port that is typically used to connect to the SiteNet 900 radio Table 3 4 Port B pinout Pin Name Function Comments 1 CAN B High I O 2 Port 2 RS232 Tx OUT 3 Port 2 RS232 Rx IN 4 PPS OUT 5 Signal GND Used for RS232 and other signals Should not be connected to V battery negative 6 Port 2 RTS OUT or Port 3 RS232 Tx OUT 7 Event OUT Alarm OUT 8 Port 2 CTS IN or Port 3 RS232 Rx IN AgGPS 252 Receiver User Guide 25 3 Installing the Receiver Table 3 4 Port B pinout continued Pin Name Function Comments 9 Event IN 10 V IN OUT Maximum output current 1 25 A 11 V IN OUT Maximum output current 1 25A 12 CAN B Low 1 0 26 AgGPS 252 Receiver User Guide CHAPTER Configuring the Receiver In this chapter AgRemote Home Screen Configuring Differential GPS m Configuring the AgGPS 252 Receiver to Operate in RTK Mode Configuring the Communication Ports Use either the Autopilot interface or the Trimble AgR
34. at broadcast from a Trimble MS750 AgGPS 214 or equivalent reference station Differential speed accuracy 0 16 kph 0 1 mph Differential position accuracy Less than 1 m 3 28 ft horizontal if all of the following criteria are met At least 5 satellites PDOP 4 RTCM SC 104 corrections Standard format broadcast from a Trimble MS750 AgGPS 214 or equivalent reference station OmniSTAR HP speed accuracy 0 16 kph 0 1 mph 54 AgGPS 252 Receiver User Guide Specifications A Table A 2 GPS channels performance continued Item Description OmniSTAR HP position accuracy 10 cm 3 94 in after convergence 2 sigma if all the following criteria are met At least 5 satellites PDOP 4 OmniSTAR HP corrections Convergence time can vary depending on the environment Time to the first fix submeter accuracy is typically 30 seconds time to the first useable fix 10 cm accuracy is typically 30 minutes Time to first fix 30 seconds typical Multipath mitigation EVEREST technology Satellite differential compatibility OmniSTAR WAAS and EGNOS NMEA messages GGA 1 1 GLL GSA1 GST GSV GST MSS PTNLDG PTNL PJK PTNL PJT PTNL VGK PTNL VHD PTNLEV PTNLID PTNLSM RMC1 VGK VTG1 XTE ZDA 1 By default the receiver is configured to output GCA GSA RMC and VTG messages at a 1 Hz 1 position per second update rate L Band Satelli
35. ble website www trimble com Problems and Solutions If you encounter a problem try the following solutions AgGPS 252 Receiver User Guide 37 Troubleshooting Global Positioning System GPS Problem Possible solution Poor accuracy The accuracy of GPS positions is poor because the receiver is picking up poor quality signals from the satellites The receiver always calculates the most accurate position it can given the current GPS satellite differential operating conditions Change some or all of the following GPS settings Minimum elevation Increase the setting the default is 8 Minimum Signal Strength Increase the System Mask AMU setting the default is 3 Maximum PDOP Decrease the setting the default is 13 GPS Mode Change to Manual 3D the default is Auto 2D 3D DGPS Mode Change to DGPS the default is DGPS Auto On Off GPS signals are reflecting off nearby trees and or metal buildings and horizontal surfaces To reduce multipath noise mount the GPS receiver so that it has a clear view of the sky The receiver must be away from trees and large metal objects Intermittent loss of lock on satellite The receiver loses the satellite signal from time to time Make sure that the receiver is mounted on the highest point of the vehicle and is clear of metal surfaces Check Maximum PDOP and Minimum Signal Strength settings see Poor accuracy above In
36. cy 3 7 cm 1 46 in 2 ppm 2 sigma Submeter differential accuracy RMS assuming at least five satellites and a PDOP ofless than four Combined GPS DGPS receiver and antenna System level cable AgRemote utility with four button keypad to configure and view system properties download from the Trimble website at www trimble com LED status indicator The receiver outputs a 1 PPS pulse per second strobe signal on both ports This signal enables an external instrument to synchronize its internal time with a time derived from the very accurate GPS system time WAAS differential correction compatibility AgGPS 170 Field Computer compatibility EVEREST multipath rejection technology OmniSTAR VBS and HP positioning compatibility Two ports that support both CAN 2 0B and RS 232 CAN 1939 and NMEA 2000 messages Note The AgGPS 252 is ISO 11783 compliant It supports some ISO 11783 messages RS 232 4 AgGPS 252 Receiver User Guide Overview 2 NMEA 0183 output GGA GLL GRS GST GSA GSV MSS RMC VTG ZDA XTE the default NMEA messages are GGA GSA VTG and RMC PTNLDG PTNLEV PINLGGK PTNLID and PTNLSM are Trimble proprietary NMEA output messages RTCMSC 104 output Trimble Standard Interface Protocol TSIP input and output Receiver Connections Figure 2 1 shows the connector ports and the LED indicator on the AgGPS 252 receiver Port A Port B LED indicator Figure 2 1 AgGPS 252
37. de GPS receiver Troubleshooting 5 Problem Possible solution Mounting location The receiver is not picking up a clear signal Mount the receiver on the centerline of the vehicle away from any sources of interference and with a clear view of the sky see Choosing a location page 19 Cables One of the cables seems faulty Use an ohmmeter to check the cable The resistance of a good cable between connector pins at each end of the cable is zero If the cable is sound but the problem persists try exchanging the cable with one that you know is working If the cable is defective contact your local Trimble Reseller for an RMA number if the Trimble product is still under warranty or to purchase a replacement cable Real time clock battery A lithium ion battery in the receiver powers the internal real time clock and so enables the receiver to get a first fix faster The battery has a life of 7 5 years When the battery fails the internal clock cannot keep accurate time and the receiver may take longer to output GPS positions Please contact your local Trimble Reseller to get the batteries replaced You cannot replace the battery yourself Factory defaults You need to restore the receiver factory defaults To restore receiver factory default settings Connect the receiver to a computer Turn on the receiver Run the AgRemote utility Navigate to the Clear BB RAM Press
38. e that could result in injury or property damage Related Information Release notes describe new features provide information that is not included in the manuals and identify changes to the manuals You can download release notes from the Trimble website Technical Assistance If you have a problem and cannot find the information you need in the product documentation contact your local Trimble Reseller Your Comments Your feedback about the supporting documentation helps us to improve it with each revision Email your comments to ReaderFeedback trimble com AgGPS 252 Receiver User Guide CHAPTER Overview In this chapter Standard Features of the AgGPS 252 Receiver Receiver Connections Receiver Input Output LED Indicator GPS Positioning Methods Sources of Error in GPS Positioning This chapter describes the AgGPS 252 receiver and gives an overview of GPS DGPS and related information When used with a Real Time Kinematic RTK base station the AgGPS 252 receiver provides RTK positioning for high accuracy centimeter level applications For physical specifications see Appendix A Specifications AgGPS 252 Receiver User Guide 3 2 Overview Standard Features of the AgGPS 252 Receiver A standard AgGPS 252 receiver provides the following features 12 GPS C A code tracking channels code carrier channels Horizontal RTK positioning accuracy 2 5 cm 0 98 in 2 ppm 2 sigma vertical RTK positioning accura
39. ections to a large site area all base stations must be coordinated relative to one another If they are not the absolute positions at the rover will be in error For more information about how to use several base stations to cover your site contact your local Trimble Reseller Coordinate systems Geographic data obtained from different sources must be referenced to the same datum ellipsoid and coordinate format Different formats provide different coordinate values for any geographic location In North America the datums NAD 27 and NAD 83 are commonly used in Agricultural mapping applications 14 AgGPS 252 Receiver User Guide Overview 2 The AgGPS 252 receiver outputs position coordinates in several datums and ellipsoids depending on the GPS positioning method being used See Table 2 6 Table 2 6 DGPS coordinate systems GPS positioning method Datum Ellipsoid None Autonomous mode WGS 84 WGS 84 OmniSTAR VBS North American Beams NAD 83 GRS 80 OmniSTAR VBS Rest of World Beams ITRF 3 GRS 80 OmniSTAR HP ITRF 2000 ITRF 2000 WAAS Beams WGS 84 WGS 84 RTK WGS 84 WGS 84 1 World Geodetic System WGS 1984 Datum and ellipsoid 2 North American Datum NAD 1983 Equivalent to WGS 84 in North America 3 International Terrestrial Reference Frame ITRF Contact the DGPS provider for details For more information go to the National Geodetic Survey website at www ngs noaa gov faq shtml WhatDat
40. eiver to prevent straining the connection Coil any slack cable secure it with a tie wrap and tuck it into a safe place The external device may have to be configured to work with the AgGPS 252 receiver The configuration tools for the external device should be provided with the device For more information about configuring the receiver see Chapter 4 For information about connecting a particular external device refer to the manual for that device or contact your local Trimble Reseller Note Use a connector plug P N 51062 to cover Port B when that port is not in use For example cover Port B when you are using the receiver in a non RTK mode AgGPS 252 Receiver User Guide 23 3 Installing the Receiver Connectors and Pinouts Use the following pinout information if you need to wire a cable for use with the AgGPS 252 receiver Figure 3 2 AgGPS 252 receiver port pinout Port A Port A on the receiver has a 12 pin Deutsch DTM connector For cables use the mating connector Deutsch part number DTM06 12SA Viewed from outside the receiver the Port A connector is on the left It is the port that is typically used to connect to an Autopilot system Table 3 3 Port A pinout Pin Name Function Comments 1 CAN A High I O 2 Port 1 RS232 Tx OUT When held to ground during power up puts unit into Monitor mode 3 Port 1 RS232 Rx IN 4 PPS OUT 24 AgGPS 252 Receiver User Guide Installing the Receiver 3 T
41. emote utility to change configuration settings in the AgGPS 252 receiver You will need to configure the receiver if you connect to a third party device for example e Ifa Trimble AgGPS Autopilot system is configured to use an AgGPS 252 receiver and the port on the receiver is set to 8 N 1 38 4 K the Autopilot system automatically configures the receiver AgRemote utility is available from the Trimble website www trimble com This chapter describes how to use the utility to perform some common configurations Note OmniSTAR VBS and HP are subscriber services that need to be activated For more information see OmniSTAR page 29 AgGPS 252 Receiver User Guide 27 4 Configuring the Receiver AgRemote Home Screen Figure 4 1 shows the AgRemote Home screen when WAAS corrections are being received Number of GPS satellites being tracked Position type Current PDOP value GPS indicators Correction indicators Correction type Signal to Noise ratio of DGPS satellite DGPS satellite name or ID Figure 4 1 AgRemote Home screen For more information about these fields and how they change as you change GPS mode refer to the document called AgRemote Software on the Trimble website www trimble com or contact your local Trimble Reseller Configuring Differential GPS For the receiver to output GPS position coordinates of submeter accuracy you must first select a differential signal from one of the
42. ew 2 Table 2 2 LED sequences with RTK positioning continued LED color LED flash Status Yellow Solid Receiving CMR corrections but unable to calculate RTK position computing DGPS if WAAS EGNOS is unavailable or autonomous position Yellow Slow No CMR corrections computing DGPS or autonomous position Yellow Fast Not receiving CMR corrections not computing positions Table 2 3 LED sequences with OmniSTAR HP positioning LED color LED flash Status Off Off No power Green Solid Normal operation computing converged OmniSTAR HP positions Green Slow Receiving OmniSTAR HP corrections but only able to compute unconverged position Green Fast Receiving OmniSTAR HP corrections but an HP error occurred Yellow Solid Receiving OmniSTAR HP corrections but unable to calculate a position computing DGPS or autonomous solution Yellow Slow No OmniSTAR HP corrections computing DGPS or autonomous position Yellow Fast Not tracking OmniSTAR HP corrections no positions GPS Positioning Methods GPS positioning systems are used in different ways to provide different levels of accuracy Accuracy is measured in absolute terms you know exactly where you are in a fixed reference frame AgGPS 252 Receiver User Guide 9 2 Overview Table 2 4 summarizes the GPS positioning methods Imperial units in this table are rounded to two decimal places The values shown are 2 sigma Table 2 4 Absolute accuracy of GP
43. ing from the date of delivery The warranty set forth in this paragraph shall not apply to software products Software License Limited Warranty This Trimble software product whether provided as a stand alone computer software product built into hardware circuitry as firmware embedded in flash memory or stored on magnetic or other media the Software is licensed and not sold and its use is governed by the terms ofthe relevant End User License Agreement EULA included with the Software In the absence of a separate EULA included with the Software providing different limited warranty terms exclusions and limitations the following terms and conditions shall apply Trimble warrants that this Trimble Software product will substantially conform to Trimbles applicable published specifications for the Software for a period of ninety 90 days starting from the date of delivery Warranty Remedies Trimble s sole liability and your exclusive remedy under the warranties set forth above shall be at Trimble s option to repair or replace any Product or Software that fails to conform to such warranty Nonconforming Product or refund the purchase price paid by you for any such Nonconforming Product upon your return of any Nonconforming Product to Trimble in accordance with Trimbles standard return material authorization procedures Warranty Exclusions and Disclaimer These warranties shall be applied only in the even
44. ink DOS Agris NMEA GGA GSA VTG 4800 or 8 N 1 1Hz 9600 FieldLink Agris NMEA GGA GSA VTG 4800 or 8 N 1 1Hz Windows 9600 Field Worker Field Worker NMEA GGA GLL RMC 4800 or 8 N 1 1Hz Pro VTG 9600 AgGPS 252 Receiver User Guide 57 B Third Party Interface Requirements Table B 1 Third party software interface requirements continued Software Company Protocol NMEA messages Baud Other Pos rate HGIS Starpal NMEA GGA RMC 4800 8 1 1Hz 9600 Instant Survey Agrilogic NMEA GGA GSA RMC 4800 8 N 1 1Hz Case IH Pocket Survey Agrilogic NMEA GGA GSA RMC 4800 8 N 1 1Hz Case IH Sitemate Farmworks NMEA GGA VTG 4800 8 N 1 1Hz Third Party Hardware Table B 2 lists the interface requirements for connecting an AgGPS receiver to third party hardware Table B 2 Third party hardware interface requirements Hardware Company Protocol NMEA Baud Other Pos Cable P N messages rate AMS Raven NMEA VTG 9600 8 N 1 1Hz Ag Navigator Springhill RTCM 9600 8 N 1 10Hz Ali Case Tyler NMEA GGA 19200 8 N 1 5 2 50166 or avigator 30945 plus Contour Position Inc NMEA GGA 19200 8 N 1 5Hz 50581 Marker RDS or NMEA GGA 19200 8 N 1 5Hz Position Inc Falcon Ag Chem NMEA GGA VTG 4800 8 N 1 1Hz 58 AgGPS 252 Receiver User Guide Third Party Interface Requirements B Table B 2 Third party hardware interface requirements continued Hardware Company Protocol N
45. is file 13 satellites number used 13 settings 33 Signal Strength Mask 38 signal to noise ratio SNR 13 42 Sitemate 58 SiteNet 900 radio settings 34 size specification 53 software AgRemote 27 third party 57 specifications 53 standard features 4 standard power data connections 22 subscription based corrections 11 Swath Smart 59 Swath XL 60 T technical assistance 2 temperature operating and storage specification 53 third party hardware 58 software 57 time 13 time to output positions 43 Trimble Standard Interface Protocol see TSIP Trimble website 1 Index troubleshooting TSIP U utility AgRemote 40 AgRemote communication 44 battery 43 cables 43 FlashLoader 200 44 GPS reception 48 GPS reception third party device 49 hardware and power 47 initialization 40 intermittent DGPS 38 OmniSTAR 50 poor accuracy 38 Real Time Kinematic RTK GPS positioning method 51 receiver location 43 restoring defaults 43 RTK 41 AgRemote setting change 34 input 6 output 6 35 AgRemote 27 FlashLoader 200 44 vertical accuracy 4 Vision Display Controller 60 AgGPS 252 Receiver User Guide 65 Index W WAAS accuracy 10 DGPS configuring 30 website 11 WAAS EGNOS corrections accuracy 10 warnings Class A product iii definition 2 fuse to be provided 19 websites European Space Agency 11 Federal Aviation Administration 11 for EGNOS 11 for WAAS 11 National Geodetic Survey 15 NMEA
46. izing an RTK Float solution is generated Once initialized an RTK Fixed solution is generated It is the RTK Fixed solution that provides centimeter level accuracy 10 AgGPS 252 Receiver User Guide Overview 2 The parts per million ppm error is dependent on the distance baseline length between the base and rover receiver For example if the distance is 10 km a 2 ppm error equals 20 mm For more information about RTK positioning go to the Trimble website at www trimble com gps Differential GPS positioning DGPS For differential positioning the AgGPS 252 receiver uses corrections from WAAS EGNOS satellites or from OmniSTAR VBS or HP satellites These differential systems use special algorithms to provide differential corrections that allow the rover receiver to calculate its position more accurately Free corrections WAAS EGNOS corrections are free in North America and Europe For more information about WAAS go to the Federal Aviation Administration website at http gps faa gov Programs WAAS waas htm For more information about EGNOS go to the European Space Agency website at www esa int export esaSA GGG63950NDC navigation 0 html Subscription based corrections The AgGPS 252 receiver uses OmniSTAR HP or OmniSTAR VBS differential corrections in the same way that it uses WAAS EGNOS corrections OmniSTAR corrections are provided on a subscription basis The corrections that are produced by OmniSTAR HP algorithm
47. k extension can block satellites Environmental conditions Although the receiver has a waterproof housing you should install it in a dry location To improve the performance and long term reliability of the receiver avoid exposure to extreme environmental conditions including water excessive heat gt 70 C 158 F excessive cold lt 30 C or 22 F high vibration corrosive fluids and gases Electrical interference As far as possible when you install the receiver you should avoid placing it near sources of electrical and magnetic noise such as gasoline engines spark plugs computer monitor screens alternators generators or magnetos electric motors blower fans equipment with DC to AC converters switching power supplies radio speakers high voltage power lines 20 9 5 252 Receiver User Guide Installing the Receiver 3 e CBradio antennas e cellular phone antennas e machine accessory lights Connecting to an External Device After installing the receiver and connecting the appropriate cabling you can connect the receiver to various external devices For example To connect the AgGPS 252 use the cable receiver to an Autopilot system P N 50165 this cable has no DB9 connector a Field computer P N 50166 a Yield monitor P N 50166 a Trimble SiteNet radio for RTK P N 49801 positioning To convert the AgGPS 252 receiver to a Trimble 12 pin conxall cable use the ada
48. nout for cables 24 Pocket Survey 58 Port A Config screen 34 Port A Input Output screen 34 port setting and protocol changing 33 ports 4 CAN ISO 11783 support 7 configuring 31 covering when not in use 23 output 4 serial CAN bus support 7 setting output rate 35 specification 54 position output formats 7 14 positioning method Differential GPS DGPS 11 OmniSTAR HP 9 RTK GPS positioning 8 Satellite Differential GPS 8 power specification 53 troubleshooting 47 protocol CAN bus 7 NMEA 5 RTCM 5 RtkLnk 6 64 AgGPS 252 Receiver User Guide third party software 57 TSIP 5 Radio Technical Commission for Maritime Services see RTCM Real Time Kinematic RTK GPS positioning method 10 accuracy 10 base station coordinates 14 configuring for 31 datum and ellipsoid 15 GPS performance 54 LEDs 8 number of satellites 13 option 18 port settings 33 radio connection 21 RtkLnk protocol 6 troubleshooting 51 vertical and horizontal accuracy 4 receiving DGPS 11 reception troubleshooting 48 troubleshooting third party device 49 release notes 2 RF3000Pro Monitor without internal GPS third party hardware 59 RGL 500 LB 5 for Raven 59 routing cables 22 RS 232 4 54 60 RTCM input 6 output 6 protocol 5 website 6 RTK see Real Time Kinematic RTK GPS positioning method RtkLnk protocol 6 port input setting 33 S SAE International website 7 Satellite Differential GPS positioning method 8 accuracy 10 satellite history ephemer
49. ooting 44 FM 2 way radios 42 free corrections 11 G GPS error sources of 13 GPS Mode 38 GPS positioning methods 9 GPS positions output format 7 output of 14 GPS reception troubleshooting 48 troubleshooting third party device 49 GreenStar Yield Monitor 59 hardware third party 58 troubleshooting 47 HGIS 58 Home screen AgRemote utility 28 satellites tracked 39 horizontal accuracy 4 humidity specifications 53 information more 2 7 28 input TSIP RTCM and ASCII 6 inputs 6 Instant Survey 58 ISO 11783 4 J J1939 CAN bus 4 7 L latitude 13 LB 3 LB 4 LB 5 59 LED indicator 8 location ofantenna 19 location of receiver 19 Index longitude 13 Marker 58 mounting plate assembly 18 19 mounting specification 54 multipath andaccuracy 14 EVEREST technology 4 GPS channels 55 reducing 38 National Geodetic Survey website 15 National Marine Electronics Association see NMEA New Holland Yield Monitor 59 NMEA output 6 35 protocol 5 screens 35 web document 7 website 6 0 OmniSTAR expiry date 50 HP Differential GPS positioning method 9 10 11 satellite beam 39 troubleshooting 50 VBS Differential GPS positioning method 10 11 website 12 optional extras 18 AgGPS 252 Receiver User Guide 63 Index output 6 1 PPS 7 RTCM TSIP NMEA 1 PPS 6 overview 3 P P clip 21 PDOP 13 PDOP Mask 38 performance of GPS channels 54 PF3000 Yield Monitor 59 physical characteristics 53 pi
50. pter cable P N 50581 Plug the into Deutsch 12 pin connector Port A on the back of the receiver straight DB9 pin connector the external device power connectors a power supply Note Do not bend the cable at the Deutsch connector When you secure the cable use the supplied P Clip The P Clip provides additional support to the connectors and reduces the risk of damage AgGPS 252 Receiver User Guide 21 3 Installing the Receiver Figure 3 1 shows how to connect the receiver to an external device using the system level cable P N 50166 LED indicator AgGPS 252 receiver Port B Deutsch 12 pin System level To external device Ground ve Power ve Figure 3 1 Standard power data cable connections When routing the cable from the receiver to the external device avoid e sharp objects e kinks in the cable e surfaces exhaust manifolds or stacks e rotating or moving machinery parts e sharp or abrasive surfaces 22 AgGPS 252 Receiver User Guide Installing the Receiver 3 e door and window jams e corrosive fluids or gases Note Do not bend the cable at the Deutsch connector When you secure the cable use the supplied P Clip The P Clip provides additional support to the connectors and reduces the risk of damage When the cable is safely routed and connected to the receiver use tie wraps to secure it at several points particularly near the base of the rec
51. ric GPS signals are degraded as they travel through the effects ionosphere The error introduced is in the range of 10 meters The error is removed by using a differential or RTK positioning method Number of gt 5 To calculate a 3D position latitude and longitude altitude and satellites used time four or more satellites must be visible To calculate a 2D position latitude and longitude and time three or more satellites must be visible For RTK positioning five satellites are needed for initialization Once initialized four or more satellites provide RTK positions The number of visible satellites constantly changes and is typically in the range 5 through 9 The AgGPS receiver can track up to 12 satellites simultaneously Note To see when the maximum number of GPS satellites are available use the Trimble Planning software and a current ephemeris satellite history file Both files are available free from the Trimble website at www trimble com Maximum PDOP 4 Position Dilution of Precision PDOP is a unitless computed measurement of the geometry of satellites above the current location of the receiver A low PDOP means that the positioning of satellites in the sky is good and therefore good positional accuracy is obtained Signal to noise gt 6 Signal to noise ratio SNR is a measure of the signal strength ratio against electrical background noise A high SNR gives better accuracy Normal values are GPS6 WAAS34
52. s are more accurate than the corrections that are produced by OmniSTAR VBS algorithms The accuracy ofthe positions reported using OmniSTAR HP increases with the time that has elapsed since the AgGPS 252 Receiver User Guide 11 2 12 Overview instrument was turned on This process is called convergence Convergence to where the error is estimated to be below 30 cm approximate 12 inches typically takes around 20 minutes Factors that influence the time to convergence include the environment the geographical location and the distance to the closest OmniSTAR corrections base station OmniSTAR is continually improving the service For more information about OmniSTAR go to the OmniSTAR website at www omnistar com For information about activating an OmniSTAR subscription see OmniSTAR page 29 Autonomous GPS positioning Autonomous GPS positioning uses no corrections The rover receiver calculates its position using only the GPS signals it receives This method does not have high absolute accuracy but the relative accuracy is comparable to the other methods AgGPS 252 Receiver User Guide Overview 2 Sources of Error in GPS Positioning The GPS positioning method influences the accuracy ofthe GPS position that is output by the AgGPS 252 receiver The factors described in Table 2 5 also affect GPS accuracy Table 2 5 Factors that influence the accuracy of GPS positions Condition Optimum Description value Atmosphe
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54. t and to the extent that i the Products and Software are properly and correctly installed configured interfaced maintained stored and operated in accordance with Trimble s relevant operator s manual and specifications and 8 the Products and Software are not modified or misused The preceding warranties shall not apply to and Trimble shall not be responsible for defects or performance problems resulting from i the combination or utilization of the Product or Software with hardware or software products information data systems interfaces or devices not made supplied or specified by Trimble ii the operation of the Product or Software under any specification other than or in addition to Trimble s standard specifications for its products iii the unauthorized installation modification or use of the Product or Software iv damage caused by accident lightning or other electrical discharge fresh or salt water immersion or spray or v normal wear and tear on consumable parts e g batteries Trimble does not warrant or guarantee the results obtained through the use ofthe Product THE WARRANTIES ABOVE STATE TRIMBLE S ENTIRE LIABILITY AND YOUR EXCLUSIVE REMEDIES RELATING TO PERFORMANCE OF THE PRODUCTS AND SOFTWARE EXCEPT AS OTHERWISE EXPRESSLY PROVIDED HEREIN THE PRODUCTS SOFTWARE AND ACCOMPANYING DOCUMENTATION AND MATERIALS ARE PROVIDED AS IS AND WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND BY EITHER TRIM
55. te Differential Correction Receiver Table A 3 lists the characteristics of the L band satellite differential correction receiver with OmniSTAR support Table L Band satellite differential correction receiver with OmniSTAR support Item Description Bit error rate 107 for of 55 5 dB Acquisition and reacquisition time 5 seconds typical Frequency band 1525 1559 MHz Channel spacing 0 5 kHz AgGPS 252 Receiver User Guide 55 A Specifications Receiver Default Settings Table A 4 lists the receiver default settings Table A 4 Receiver default settings Item Description DGPS source WAAS EGNOS Dynamics Land Minimum elevation 8 AMU mask 3 PDOP mask 13 PDOP 2D 3D switch 11 DGPS mode Auto On Off DGPS correction age limit 250 seconds Pos fix rate 1Hz 56 AgGPS 252 Receiver User Guide APPENDIX Third Party Interface Requirements Third Party Software Table B 1 lists the interface requirements for connecting an AgGPS receiver to third party software Use cable P N 50166 or 30945 plus 50581 when connecting to the third party software products listed Table B 1 Third party software interface requirements Software Company Protocol NMEA messages Baud Other Pos rate AgView GIS Solutions NMEA VTG GLL 4800 8 N 1 1Hz FarmGPS Red Hen NMEA GGA GSA VTG 4800 8 N 1 1Hz Field Rover SST Dev Group NMEA GGA GSA GSV 4800 8 N 1 1Hz VTG FieldL
56. termittent DGPS signal The correction signal strength can drop to unusable levels Causes include tree canopy cover between the receiver and the differential satellite radar sets and microwave transmitters Move the receiver away from the tree cover and or from sources of electromagnetic interference 38 AgGPS 252 Receiver User Guide Troubleshooting 5 Problem Possible solution Tracking but not receiving a differential signal The receiver is tracking satellites and tracking an OmniSTAR satellite beam but is not receiving DGPS signals The Home screen indicates how many satellites are being tracked and whether a differential source is being tracked You see h 3D for HP not converged H 3D for HP converged r 3D for RTK float R 3D for RTK fixed D 3D for DGPS HP and RTK also give an indication of positional accuracy on the Home screen AgRemote Check that your DGPS service subscription is still current and enabled For OmniSTAR service 1 Use the AgRemote utility to navigate to one of the following screens depending on what you are using the Omni HP Info Omni VBS Info 2 Press 4 until Stop Date If the message Access Unknown appears contact OmniSTAR to reactivate your subscription For more information see OmniSTAR page 29 The receiver must be switched on and configured to track the correct satellite coverage beam before it can be reactivated The receiver automatically
57. ting 5 Troubleshooting Flowcharts These flowcharts describe how to troubleshoot problems in the following areas e System hardware and power GPS reception no third party device attached e GPS reception third party device attached e OmniSTAR positioning RTK using the AgRemote utility In addition you may find it useful to review Chapter 3 Installing the Receiver AgGPS 252 Receiver User Guide 45 5 Troubleshooting 46 AgGPS 252 Receiver User Guide Troubleshooting Flowcharts ejquuL 220 JNOA 19 U09 s sisued EU ejqeo SEA uoneJedo 10 iueroins seu pue SI 18A19991 941 amp 1019811 10 euiquioo eui uo uan ue A 1 ON 290 Jno j9e u09 YIM e1eu uo 1464 U9819S JO 18A19981 991 51 eiquuur 890 Jno 1 2 05 amod UelonsUI Seu 18118981 941 SHOA 26 01 uoemeq eDeyoA Asayyeg eu s Je od Aeyeq eui A ZE 0 ejqeo eu Jo spee Jamod pue pai 1 5 t oN
58. um AgGPS 252 Receiver User Guide 15 2 Overview 16 AgGPS 252 Receiver User Guide CHAPTER Installing the Receiver In this chapter System Components m Mounting the Receiver W Connecting to an External Device W Connectors and Pinouts This chapter describes how to check the equipment that you have received set up the receiver and connect the receiver to another device AgGPS 252 Receiver User Guide 17 3 Installing the Receiver System Components Check that you have received all components for the AgGPS system that you have purchased If any containers or components are damaged immediately notify the shipping carrier Components are listed in the following tables Table 3 1 AgGPS 252 receiver P N 55500 XX Quantity Description 1 AgGPS 252 DGPS receiver P N 55500 01 1 System level cable P N 50165 or 50166 1 Mounting plate assembly P N 51312 00 1 Port B plug P N 51062 1 AgGPS 252 Receiver User Guide this manual P N 55510 00 ENG 1 Warranty Activation Card P N 25110 00 1 OmniSTAR Activation Card P N 33965 Optional extra You may also have ordered the following item Table 3 2 Receiver option Quantity Description 1 RTK capability P N 51264 18 AgGPS 252 Receiver User Guide Installing the Receiver 3 Mounting the Receiver N WARNING For continued protection against the risk of fire the power source lead to the model AgGPS 252 recei
59. ve all the changes SE Dr Or om Press 2 to move to the next screen 34 AgGPS 252 Receiver User Guide Configuring the Receiver 4 NMEA settings Three screens NMEA1 NMEA2 and NMEA3 show what NMEA messages are output from the port Message types shown in upper case are being output message types shown in lower case are not For more information about NMEA message types refer to the document called 0183 Messages Guide for AgGPS Receivers on the Trimble website www trimble com Port output rate This setting can be used to vary the NMEA and TSIP output rate A setting of 1 outputs one position each second ASAP equals the rate selected on the Filter and Position Rate screen under the GPS Config menu A setting of ASAP outputs positions five or ten times every second The default factory setting is 1 Hz AgGPS 252 Receiver User Guide 35 4 Configuring the Receiver 36 AgGPS 252 Receiver User Guide CHAPTER Troubleshooting In this chapter m Problems and Solutions Troubleshooting Flowcharts This chapter describes some problems that can arise and explains how to solve them It includes a series of flowcharts to help with troubleshooting As you work through this chapter you may need to view the receiver status or change values in some fields For information on how to do this refer to the document called NMEA 0183 Messages Guide for AgGPS Receivers This document is on the Trim
60. ver can accept real time corrections CMR data from an external device such as a Trimble radio The default port settings are Port A Port B Baud rate In TSIP 38 400 TSIP 38 400 Out TSIP 38 400 TSIP 38 400 Data bits 8 8 Parity None None Stop bits 1 1 AgGPS 252 Receiver User Guide 33 4 Configuring the Receiver Note The AgRemote utility when connected to an AgGPS 252 receiver receiver automatically resets the receiver port communication settings to 8 0 1 TSIP 115 K This enables optimal communication with an office computer If the receiver is to work with an Autopilot system however the receiver port communication settings must be 8 N 1 TSIP 38 4 K To work with some other devices and software programs the receiver port communication settings must be 8 N 1 NMEA 4800 If AgRemote has changed the settings you will need to change them back manually When using a Trimble SiteNet 900 radio make sure that the communication settings are correct in the receiver The default settings to use with the SiteNet radio are Setting Description Baud rate 38 400 Data bits 8 Parity None Stop bits 1 Changing the input or output port settings 1 From the Port A Config screen press 2 until the Port A Input Output screen appears Press 3to activate the cursor Press 1 or 2 to change the value Press 3 Repeat Steps 3 and 4 until you have set all the required values Press 4 to sa
61. ver should be provided with a 10 A maximum fuse Secure the AgGPS 252 receiver directly to the mounting plate assembly P N 51312 00 and insert three bolts through the holes that are in the housing and in the mounting plate assembly Torque the bolts to 75 80 inch pounds Choosing a location When choosing a location consider the following Mount the receiver flat surface along the centerline of the vehicle in any convenient location that is within 5 5 meters 18 ft of the port on the external instrument if necessary use the optional extension cable to connect the receiver and external device Note If you are using a Trimble AgGPS Autopilot system please refer to the installation instructions that are provided with the Autopilot e atthe highest point on the vehicle with no metal surfaces blocking the receiver s view of the sky e insuchawaythat it is not damaged when you drive the machine into a shed or storage area Do not mount the receiver e close to stays electrical cables metal masts CB radio antennas cellular phone antennas air conditioning units machine cab blower fan or machine accessory lights e near transmitting antennas radar arrays or satellite communication equipment AgGPS 252 Receiver User Guide 19 3 Installing the Receiver near areas that experience high vibration excessive heat electrical interference and strong magnetic fields Note metal combine grain tan

Trimble Outdoors AgGPS 252 User's Manual

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