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V ersion 1.00 Revision B Part Number 55510 -00-ENG August 2005 User Guide Ag GPS ® 252 R e ceiver Ag252_100B_UserGuide_ ENG.book Page i Thursday, Jul y 28, 2005 4:06 PM.
Contact In formation T rimble N avig ation Limited Agriculture Busin ess Area 9290 Bond Str eet, Suite 102 Overland Par k, KS 66214 USA +1-913-495-2700 Phone trimble_support@trim ble.com www .trimble.com Legal Notice s © 2004-2005, T rim ble Navig ation Limited.
OF TH E PO SSIBILITY OF ANY SUC H LOSS AND RE GA RD LE SS OF THE COUR SE OF DEAL ING WHIC H DEVELOPS OR HAS DEVELOPE D BET WEEN YOU AND TRIMBLE . B ECAUSE SO ME STATE S AND JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITA TION OF LIABILITY FOR CONS EQUE NTIA L OR INCID ENTAL DAMAGES , THE ABOVE LIMIT ATION MAY NOT APPLY TO YOU .
Ag252_100B_UserGuide_ ENG.book Page iv Thursday , July 28, 2005 4:06 PM.
Ag GPS 252 Receiver User Guide v Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . 1 W arnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Related Information . . . . . . . . . . . . . .
Contents vi Ag GPS 252 Receiver User Guide Connectors and P inouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Port A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Port B . . . . . . . .
CHAPTER 1 Ag GPS 252 Receiver User Guide 1 Intr oduction 1 W elc ome to th e Ag GPS 252 Receiver User Guide. This manual: • Descri bes how to install and conf igure the T rimble ® Ag GPS ® 252 rec e iv e r . • Provi des guideline s for conn ecting th e receiver to an external device.
1 Introduction 2 Ag GPS 252 Receiver User Guide 1.1 Wa r n i n g s Always follow the instructions that a ccomp any a warning. C WAR N IN G – Indicates a potential hazard or unsafe practic e that could result in injury or prop erty damage.
CHAPTER 2 Ag GPS 252 Receiver User Guide 3 Overview 2 In this chapter: Q Standard Features of the AgGPS 252 Receiver Q Receiver Connections Q Receiver Input/Output Q LED Indicator Q GPS Positioning Me.
2 Overview 4 Ag GPS 252 Receiver User Guide 2.1 Standard Featur es of the Ag GPS 252 Receiver A standard Ag GPS 252 r eceiver provides the following feat ures: • 12 GPS ( C/A-code) tr ackin g channels, code carr ier chann els • H o r i z o n t a l R T K p o s i t i o n i n g a c c u r a c y 2 .
Ag GPS 252 Receiver User Guide 5 Overview 2 – NMEA-0183 output: GGA, GLL, GRS, G ST , GSA, GSV , MS S, RMC, V TG, Z DA, X TE (the d efault NME A me ssages are GGA, GSA, V TG, and RM C) PTNLDG, PTNLEV , PTNLGGK, PTNLID, and PTNLSM ar e T rimble pr oprietary NMEA output messages.
2 Overview 6 Ag GPS 252 Receiver User Guide • provide support for the J1939 ( CAN) serial bus F or m ore information about the inpu ts, outputs, and LED indicators, see the information in the rest of this section .
Ag GPS 252 Receiver User Guide 7 Overview 2 – www .r tcm .org On the T rimbl e website ((www .trimble.c om ), refer to the docu ment ca lled NMEA-0183 M essages Gu ide for AgGPS Re ceiv ers .
2 Overview 8 Ag GPS 252 Receiver User Guide 2.4 LED Indicator The Ag GPS 252 receiver has an LED light that show s the status of the receiver . Th e following tabl es de scribe th e light sequence s for each posi tio ning met hod . Note – W AA S/EGNOS and OmniST AR VBS use the S atellit e Dif ferential GPS p ositioning meth od .
Ag GPS 252 Receiver User Guide 9 Overview 2 2.5 GPS Positioning Methods GPS positioning systems are used in dif ferent ways to provide different level s of accuracy . Accuracy is measur ed in absolute t erms (you know exactly where you ar e in a fixed refer enc e frame ).
2 Overview 10 Ag GPS 252 Receiver Use r Guide T able 2.4 summarizes the GPS positioning m ethods . Imperial units in this table are rounded to t wo d ecimal places. The valu es shown are 2s i g m a . F or m ore information about each po sitioning method , see below .
Ag GPS 252 Receiver User Guide 11 Overview 2 The par ts per mil lion (ppm) error is dep endent on the di stance ( baseline leng th) bet ween th e base and rover receiver . For example, if the distance i s 10 km, a 2 ppm error equals 20 mm . F or more information about RTK positi oning, go to the T rimble website at www .
2 Overview 12 Ag GPS 252 Receiver Use r Guide inst rument was turned on. This process is called conve rge nce . Conver gence to wh ere the error is estimated to be below 30 cm (a pproximat e 12 inch es) t ypically take s around 20 minutes.
Ag GPS 252 Receiver User Guide 13 Overview 2 2.6 Sour ces of Err or in GPS Positioning The GPS positioning method inf lu ences the accuracy of the GPS p o si t io n t h at i s o ut p ut by t he Ag GPS 252 recei ver. The factors describ ed in T abl e 2.
2 Overview 14 Ag GPS 252 Receiver Use r Guide 26.1 Coordinate systems Geographic data obtaine d from different sources must be r eferenced to the same d atum, ellips oid , and coordinate format. D if ferent formats provide d if fer ent coord inate values for an y geogra phic locatio n.
Ag GPS 252 Receiver User Guide 15 Overview 2 The Ag GPS 252 receiver out p uts position coordinates in several dat ums and ellipsoi ds d ependin g on the GP S po sitioning method b eing used . See T able 2.6. F or more information , go to the National Geodeti c Sur ve y website at www .
2 Overview 16 Ag GPS 252 Receiver Use r Guide Ag252_100B_UserGuide_E NG.book Page 16 Thursday, July 28, 2005 4:06 PM.
CHAPTER 3 Ag GPS 252 Receiver User Guide 17 Installing the Receiver 3 In this chapter: Q System Components Q Mounting the Receiver Q Connecting to an External De vice Q Connectors and Pinouts This chapter d escrib es how to ch eck the equipm ent that you have received, set up th e receiver , and connec t the receiver to another device.
3 Installing t he Receiver 18 Ag GPS 252 Receiver Use r Guide 3.1 System Components Check that y ou have received all compon ents for th e Ag GPS syst em that you have purchased . If any contain ers or co mpon ents are damaged , imm ediately notify the shipping carri er .
Ag GPS 252 Receiver User Guide 19 Installing the Receiver 3 3.2 Mounting the Receiver C WAR N IN G – For continued protection against the risk of fire, the power source (lead) to the model Ag GPS 252 r eceiver sho uld be prov ided with a 10 A (maximum) fuse.
3 Installing t he Receiver 20 Ag GPS 252 Receiver Use r Guide • near areas that experi ence high v ibration, e xcessive heat, electrical interference, and str ong magnetic f ields Note – A metal combine gr ai n tank ex tension can bloc k satellites.
Ag GPS 252 Receiver User Guide 21 Installing the Receiver 3 • CB radio antennas • cellular phon e antennas • machine accessor y lights 3.3 Connecting to an External Device After installing th e receiver and connec ting th e appropriate cabling, you c an connect the r eceiver t o vari ous exte rnal devices .
3 Installing t he Receiver 22 Ag GPS 252 Receiver Use r Guide F igure 3.1 shows how to connect the receiver to an external de vice using the sys tem l evel cable (P/N 50166).
Ag GPS 252 Receiver User Guide 23 Installing the Receiver 3 • door and win dow jams • corr osi ve f luids o r gases Note – D o not bend the cable at the Deutsch connector . Wh en you secure the cable, use t he supplied P-Clip. The P-Clip pr ovides additio nal support to the c onnectors and redu ces th e risk of dam age.
3 Installing t he Receiver 24 Ag GPS 252 Receiver Use r Guide 3.4 Connectors and Pinouts Use t he fo llowing pinout information if y ou ne ed to wire a cable for use wit h t he Ag GPS 252 recei ver. Figure 3.2 Ag GPS 252 receiver port pinout 34.1 Port A Port A on the recei ver has a 12-pin D eutsch DT M conne ctor .
Ag GPS 252 Receiver User Guide 25 Installing the Receiver 3 34.2 Port B This p ort has th e sam e conn ector as Port A, se e abov e. Viewed from outside the receiver , the Port B conne ctor is on the right. It is the port that is typically used to connect to th e SiteNet 900 radio.
3 Installing t he Receiver 26 Ag GPS 252 Receiver Use r Guide 9E v e n t I N 10 V+ IN / OUT Maximu m output current = 1.25 A 11 V– IN / OUT Maximum output current = 1.25 A 12 CAN B Low I/O T able 3.4 Port B pinout (continued) Pin Name/F unction Comm ents Ag252_100B_UserGuide_E NG.
CHAPTER 4 Ag GPS 252 Receiver User Guide 27 Configur ing the Receiver 4 In this chapter: Q AgRemote Home Screen Q Configuring Differ ential GPS Q Configuring the AgGPS 2 52 Receiver to Operate in RTK .
4 Configuring th e Receiver 28 Ag GPS 252 Receiver Use r Guide 4.1 AgRemote Home Scr een F igure 4.1 shows the AgRemot e Ho me screen wh en W AAS corrections are being received.
Ag GPS 252 Receiver User Guide 29 Configuring the Receiver 4 • OmniST AR – pai d subscription, available w orldwide Y ou can use this paid ser vic e as an alternative to W AAS/EGNO S. I t provides over -the-air D GPS activation. F or more information , see D if fer ential GPS positioning (D GPS ), page 11.
4 Configuring th e Receiver 30 Ag GPS 252 Receiver Use r Guide – serial number – satellit e beam nam e OmniS T AR will acti vate the r eceiver . Ac tivat ion c an tak e 5–30 minutes.
Ag GPS 252 Receiver User Guide 31 Configuring the Receiver 4 4.1 Configur ing the Ag GPS 252 Receiver to Operate in R TK Mode Use the AgRemote utility to configure the Ag GPS 252 recei ver for operation in R TK mod e. T o confi gure the receiver : 1. Connect the Ag GPS 252 receiver to the comput er .
4 Configuring th e Receiver 32 Ag GPS 252 Receiver Use r Guide To c o n f i g u r e P o r t A : 1. Connect the Ag GPS 252 receiver to the comput er . T urn on th e receiver and start the AgRemot e uti lity . 2. In AgRemote, se lect Confi gur ation / Port A Config .
Ag GPS 252 Receiver User Guide 33 Configuring the Receiver 4 Configure the Port Input/Output communication settings for communicating w ith the Ag GPS A utopilot, other external har dware dev ices, and soft ware pr ograms. T able 4.1 d escrib es the input set tings.
4 Configuring th e Receiver 34 Ag GPS 252 Receiver Use r Guide Note – Th e AgR emote utility , when connected to an A gGPS 2 52 receiver receiver , automatically resets the receiver port co mmunication set tings to 8-O-1 T SIP 115 K. This enabl es optimal communication w ith an of fice computer .
Ag GPS 252 Receiver User Guide 35 Configuring the Receiver 4 NMEA settings Three screens (NMEA1, NME A2, and NME A3) show w hat NME A messages ar e outpu t from the port. M essage ty pes shown in upper c ase are being output; me ssage types shown in low er case are not.
4 Configuring th e Receiver 36 Ag GPS 252 Receiver Use r Guide Ag252_100B_UserGuide_E NG.book Page 36 Thursday, July 28, 2005 4:06 PM.
CHAPTER 5 Ag GPS 252 Receiver User Guide 37 T r oubleshooting 5 In this chapter: Q Q Problems and Solut ions Q T roubleshooting Flowcharts This chapter describe s some problems that can ari se and explains how to solve them . I t in cludes a series of f lowchar ts to h elp with troubleshooting.
5 T roubleshooting 38 Ag GPS 252 Receiver Use r Guide Global Positioning System (GPS) Problem Possible solution Poor accuracy The accuracy of GPS po sitions is poor because the r eceiver is pickin g up poor quality signals from the satellites.
Ag GPS 252 Receiver User Guide 39 T roubleshooting 5 T racking but not r eceiving a dif ferential signal The receiver is tracking sa tellites and tracking an Omn iST AR satell ite beam, but is not receiving DGPS signals. The Home screen indicates how many satellites are being tracked, and whether a differential source is being tra cked.
5 T roubleshooting 40 Ag GPS 252 Receiver Use r Guide No GPS position output from the receiver after connecting to AgRemote When the receiv er is connected to the AgRemote uti lity , AgRemote automatically re sets the port communication se ttings on the receiver to 8-O-1 TSIP 115 K for both input and output.
Ag GPS 252 Receiver User Guide 41 T roubleshooting 5 Not tracking RTK corrections The radio link is down or intermittent. • Ensure that the line-of-sight bet ween the ba se and rover rec eiv er s i s n o t o bstr u ct ed . • Ensure that the ro ver rece iver is w ithin range of th e radio.
5 T roubleshooting 42 Ag GPS 252 Receiver Use r Guide Interference Problem Possible solution Stro ng magnetic fi elds Strong magnetic fields have no effect on GPS or satellite DGPS signals. However , some computers and other electric equipment radi ate electromagnetic energy that can interfere with a GPS receiver .
Ag GPS 252 Receiver User Guide 43 T roubleshooting 5 GPS r eceiver Problem Possible solution Mounting l ocation The receiver is not picking up a clear signal. Mount the receiver on t he centerl ine of the vehicle, away from any sources of interference and with a clear view of th e sky (see Choosing a location, page 19).
5 T roubleshooting 44 Ag GPS 252 Receiver Use r Guide AgRemote utility FlashLoader 200 upgrade utility Problem Possible solution AgRemote canno t c ommunicate with the receiver .
Ag GPS 252 Receiver User Guide 45 T roubleshooting 5 5.1 T roubleshooting Flowcharts These f lowcharts describ e how to troubleshoot problems in the followin g areas: • sys t em ha rdw are an d p ow.
5 T roubleshooting 46 Ag GPS 252 Receiver Use r Guide Ag252_100B_UserGuide_E NG.book Page 46 Thursday, July 28, 2005 4:06 PM.
Ag GPS 252 Receiver User Guide 47 T roubleshooting Flowcharts Figure 6.1 T roublesh oo ting system hard ware and power START HERE The receiver is connected and has sufficient power for oper ation.
T roubleshooting Flowcharts 48 Ag GPS 252 Receiver Use r Guide Figure 6.2 Using AgRemote to troub leshoot GPS rece ption (no third-party device attached ) S T A R T H E R E Ye s Ye s No Continue No Ye s No Is the Ag Remote screen on? Check the Home screen for GPS reception.
Ag GPS 252 Receiver User Guide 49 T roubleshooting Flowcharts Figure 6.3 Using AgRemote to troubleshoot GPS receptio n (third-party device attach ed) S T A R T H E R E Ye s Ye s Ye s No Ye s No No No .
T roubleshooting Flowcharts 50 Ag GPS 252 Receiver Use r Guide Figure 6.4 Using AgRemote to troubleshoot OmniST AR positioning S T A R T H E R E Ye s No No Ye s Ye s No Ye s Check the Ag Remote Home screen for GPS reception.
Ag GPS 252 Receiver User Guide 51 T roubleshooting Flowcharts Figure 6.5 Using AgRemote to trou bleshoot RTK START HERE Check that there are no other base stations operating in the area, interfering with your base station signal. Check the Ag Remote Home screen for GPS reception.
T roubleshooting Flowcharts 52 Ag GPS 252 Receiver Use r Guide Ag252_100B_UserGuide_E NG.book Page 52 Thursday, July 28, 2005 4:06 PM.
APPENDIX A Ag GPS 252 Receiver User Guide 53 Specifications A A.1 Ag GPS 252 Receiver T able A.1 lists the physica l characteristics of the Ag GPS 25 2 combin ed GPS/DGPS receiver and antenna : Ta b l e A . 1 Ag GPS 252 r eceiver Item Descript ion Size 300 mm (11.
A Specificati ons 54 Ag GPS 252 Receiver Use r Guide A.2 GPS Channels T able A.2 lists the per formance characteri stics of GPS channel s. Ports T wo connection ports, both of which support RS-23 2 and CAN Mounting Three holes for 10 mm (0.39 in) bolts Compliance FCC Part 15 Class A, C-T ick, E-mark, CE-mark T able A.
Ag GPS 252 Receiver User Guide 55 Specifications A A.3 L-Band Satellite Dif ferential Corr ection Receiver T able A.3 lists the characteristics of the L-band sat ellite dif ferential correction receiver with OmniST AR suppor t. OmniST AR HP position accuracy 10 cm (3.
A Specificati ons 56 Ag GPS 252 Receiver Use r Guide A.4 Receiver Default Settings T able A.4 lists the receiver default settings. T able A.4 Recei ver default settings Item Descript ion DGPS source W.
APPENDIX B Ag GPS 252 Receiver User Guide 57 Thir d-Party Interface Requir ements B B.1 Thir d-Party Software T able B.1 lists the int er face requirements for conne cting an Ag GPS receiver to third-part y soft ware. Us e cable P/N 50166, or 30945 plus 505 81, when conn ecting to the third-party soft ware products listed .
B Third-Party Interface Requirements 58 Ag GPS 252 Receiver Use r Guide B.2 Thir d-Party Hardwar e T able B.2 lists the int er face requirements for conne cting an Ag GPS receiver to third-part y hardwar e.
Ag GPS 252 Receiver User Guide 59 Third-Party Interface Re quirements B Falcon w/ Falcon T rack LBAR Ag Chem NMEA GGA, VTG 19200 8-N-1 10Hz 50166, or 30945 plus 50581 Swath Smart or RGL 500 (LB-5 for .
B Third-Party Interface Requirements 60 Ag GPS 252 Receiver Use r Guide VCD (Vision Display Controller) Rockwell NMEA GGA, GLL, VTG, ZDA 4800 8-N-1 1 Hz 50166, or 30945 plus 50581 Swath XL Midtech NME.
Ag GPS 252 Receiver User Guide 61 Index Numerics 1 PPS output 7 A accuracy 4, 10 adapter cable 21 AFS Yiel d Monitor 59 Ag Na v igator 58 AGC O FieldSt ar Yield Monitor 60 AgGPS 170 Field Computer 4, .
Index 62 Ag GPS 252 Receiver User Guide CMR corrections for R TK 10, 33, 54 input 6 LED sequences 8 COM port 44 compliance, specificati on 54 comp onen ts 18 con figu ring RTK 3 1 WA A S / E G N O S D.
Index Ag GPS 252 Receiver User Guide 63 GPS rece ption troublesh ootin g 48 troublesh ootin g (third-par ty device ) 49 GreenStar Yield M onitor 59 H ha rdw are third-par ty 58 troublesh ootin g 47 HG.
Index 64 Ag GPS 252 Receiver User Guide output 6 1 PPS 7 RT C M, T SIP , NME A, 1 PPS 6 overv iew 3 P P-c li p 21 PD O P 13 PD O P Ma sk 38 perf orman ce of G PS cha nnels 54 PF3000 Yield M onitor 59 .
Index Ag GPS 252 Receiver User Guide 65 RtkLn k protocol 6 port inp ut set ting 33 S SAE Inte rnation al websit e 7 Satel lite D if ferential GPS positioning met hod 8 accuracy 10 satellite hi story (.
Index 66 Ag GPS 252 Receiver User Guide W WA A S accuracy 10 DG PS , c on fi gu ri ng 30 webs ite 11 W AAS/ EGN OS corr ection s, acc ur acy 10 warnings Class A prod uct iii definition 2 fuse to be pr.
Een belangrijk punt na aankoop van elk apparaat Trimble Outdoors AgGPS 252 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen Trimble Outdoors AgGPS 252 heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Trimble Outdoors AgGPS 252 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Trimble Outdoors AgGPS 252 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Trimble Outdoors AgGPS 252 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Trimble Outdoors AgGPS 252 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Trimble Outdoors AgGPS 252 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Trimble Outdoors AgGPS 252 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
