Home

GPS Pathfinder® Systems Receiver Manual

1. If the activation process is not completed within 45 minutes call Racal LandStar and report your problem Note The 45 minute wait period is for activation only Once activated Racal LandStar corrections begin less than 10 seconds after configuring the receiver to receive them GPS Pathfinder Systems Receiver Manual 33 3 Real Time DGPS Components 34 GPS Pathfinder Systems Receiver Manual CHAPTER Equipment In this chapter Introduction GPS Pathfinder Pro XR XRS front panel GPS Pathfinder Pro XR XRS back panel GPS Pathfinder Power housing GPS Pathfinder Pro XR cabling GPS Pathfinder Pro XRS cabling GPS Pathfinder Power cabling Backpack Optional range poles and tripods Optional vehicle kit 4 Equipment Introduction This chapter outlines the various components of the GPS Pathfinder Systems receivers and shows how to connect your receiver and data collector to create a mapping system GPS Pathfinder Pro XR XRS Front Panel The GPS Pathfinder Pro XR XRS receiver shown in Figure 4 1 1s mounted in a weatherproof housing Trimble SA A 9 Figure 4 1 GPS Pathfinder Pro XR XRS front panel 36 GPS Pathfinder Systems Receiver Manual Status Lights Equipment 4 The two status lights on the front panel of the GPS Pathfinder Pro XR XRS receiver provide the status information listed in Table 4 1 Table 4 1 Off Flashing Yellow Flashing Green Solid Yellow Solid Green GPS Pathf
2. The 45 minute wait period is for activation only Once activated OmniSTAR corrections begin less than 10 seconds after configuring the receiver to receive them Activating the Racal LandStar Satellite Differential Service To activate the Racal LandStar satellite differential service do the following l Prepare the GPS Pathfinder Pro XRS or Power receiver Connect the controlling software to the receiver and begin tracking GPS satellites with a clear view of the sky Follow the directions in the software s user documentation to obtain the LandStar ID for the receiver Write the ID down 2 Call Racal LandStar and give them your location for example Sunnyvale California USA the LandStar ID that you obtained from the controlling software Racal LandStar gives you the LandStar satellite and frequency for your local area 32 GPS Pathfinder Systems Receiver Manual Real Time DGPS Components 3 Note For phone numbers and further details on how to access the Racal LandStar service refer to the LandStar booklet that accompanies your GPS Pathfinder Systems receiver or visit the Racal LandStar website at www racal landstar com 3 Follow the directions in the controlling software s user documentation to configure the receiver so that it is ready to receive the corrections from your regional Racal LandStar satellite 4 Wait up to 45 minutes for the activation process to complete Note
3. em al GEO gasa Neda WERE Integrated GPS beacon antenna Antenna cable 12 channel Pro XR receiver Camcorder batteries NMEA RTCM cable Data power cable Dual battery cable TSC1 data ESP cable TSC1 data collector GPS Pathfinder Systems Receiver Manual 4 41 4 Equipment To use a GPS Pathfinder Pro XR receiver with a field device that has a standard serial port connect the system as shown in Figure 4 6 P N 29653 00 Integrated GPS beacon antenna P N 22628 Antenna cable P N 38073 11 12 channel Pro XR receiver P N 17466 Camcorder batteries P N 30232 00 NMEA RTCM cable P N 30231 00 Data power cable P N 24333 Dual battery cable P N 30236 Field device data cable Field Device with standard serial port 00 Y O BON Figure 4 6 GPS Pathfinder Pro XR receiver field device with standard serial port connection diagram 42 GPS Pathfinder Systems Receiver Manual Equipment 4 To use a GPS Pathfinder Pro XR receiver with a field device that has a customized serial port connect the system as shown in Figure 4 7 P N 29653 00 Integrated GPS beacon antenna P N 22628 Antenna cable P N 38073 11 12 channel Pro XR receiver P N 17466 Camcorder batteries P N 30232 00 NMEA RTCM cable P N 30231 00 Data power cable P N 24333 Dual battery cable P N 43197 Null modem adapter Custom data cable O Field device with custom serial
4. 29 MSK Digital Signal Processing 30 MSK O Processing ud id a a ua 30 Worldwide DGPS Beacon Coverage 31 Activating the OmniSTAR Satellite Differential Service 31 Activating the Racal LandStar Satellite Differential Service 32 Equipment ERRO CUCHION vto os pda oy Sart e pd e e cc Aia 36 GPS Pathfinder Pro XR XRS Front Panel 36 StAtUs LIME 246 ote EDS Se E rd 37 GPS Pathfinder Pro XR XRS Back Panel 38 DOR A A A 38 POR Dis E ado ot ss rad cis 38 MACA PO seo aca ar amp E it ia Se ee 38 GPS Pathfinder Power Housing 0 39 GPS Pathfinder Pro XR Cabling 0 4 GPS Pathfinder Pro XRS Cabling 0 44 GPS Pathfinder Power Cabling 4 ds A TA A a ass oe ee DO Gs A Ba Os es See 50 Loading GPS Pathfinder Pro XR XRS Equipment into the Backpack 50 Loading GPS Pathfinder Power Equipment into the Backpack 32 Fitting Me Backpack eme auna oh a ins Sees Jo Caring for the Backpack o S6 Optional Range Poles and Tripods 57 Optional Vehicle Kit caiste le de ed 57 GPS Pathfinder Systems Receiver Manual vii Contents A vill Upgrading Receiver Firmware IMMOGUCHON s lt 2 9 24 a8 62d amp ee oa E oe GEASS 60 Downloading the Firmware Files 4 60 Comnecting the Cables go kaw
5. GPS Pathfinder Systems Receiver Manual GPS Pathfinder Systems Receiver Manual Version 1 00 Part Number 40889 00 ENG Revision B Trimble April 2001 Corporate Office Trimble Navigation Limited Mapping and GIS Systems Division 645 North Mary Avenue Post Office Box 3642 Sunny vale CA 94088 3642 U S A Phone 1 408 481 8940 1 800 545 7762 Fax 1 408 481 7744 www trimble com Copyright and Trademarks 2001 Trimble Navigation Limited All rights reserved Printed in the United States of America Printed on recycled paper The Sextant logo with Trimble ASPEN Asset Surveyor GeoExplorer and GPS Pathfinder are trademarks of Trimble Navigation Limited registered in the United States Patent and Trademark Office The Globe amp Triangle logo Trimble 4000RS 4000RSi 4600 LS BoB DSM ESP EVEREST Geodetic Surveyor Geodetic System Surveyor Maxwell Site Surveyor System Surveyor TerraSync TRS and TSC are trademarks of Trimble Navigation Limited All other trademarks are the property of their respective owners Release Notice This is the April 2001 release Revision B of the GPS Pathfinder Systems Receiver Manual part number 40889 00 ENG The following limited warranties give you specific legal rights You may have others which vary from state jurisdiction to state jurisdiction The following limited warranties give you specific legal rights You may have others which vary
6. GPS Pathfinder Systems Receiver Manual 47 4 Equipment To use a GPS Pathfinder Power receiver with a field device that has a standard serial port connect the system as shown in Figure 4 12 Use the RTCM NMEA cable part number 40887 00 only 1f you need to cable in RTCM corrections and or output NMEA data from the recelver P N 38198 50 GPS Pathfinder Power receiver P N 40492 00 Data power cable P N 17466 Camcorder batteries P N 24333 Dual battery cable P N 45052 GPS Pathfinder Power field device data cable P N 40887 00 RTCM NMEA cable Field device with standard serial port Figure 4 12 GPS Pathfinder Power receiver field device with standard serial port connection diagram 48 GPS Pathfinder Systems Receiver Manual Equipment 4 To use a GPS Pathfinder Power receiver with a field device that has a customized serial port connect the system as shown in Figure 4 13 Use the RTCM NMEA cable part number 40887 00 only if you need to cable in RTCM corrections and or output NMEA data from the recelver 4 P N 38198 50 GPS Pathfinder Power receiver P N 40492 00 Data power cable P N 17466 Camcorder batteries P N 24333 Dual battery cable P N 43197 Null modem adapter P N 40887 00 RTCM NMEA cable Custom data cable Field device with custom serial port ONO O ERON Figure 4 13 GPS Pathfinder Power receiver field device with custom serial port connec
7. DGPS beacon components 26 DGPS beacon coverage 31 DGPS radiobeacons IALA Standard 4 DGPS reference station 27 differential GPS See DGPS DoD 2 downloading files for upgrading receiver firmware 60 E equipment range poles 57 tripods 57 vehicle kit 57 EVEREST multipath rejection technology 6 7 external differential correction receiver 5 74 GPS Pathfinder Systems Receiver Manual F FFT digital signal processing 30 field device cabling for Power receiver 42 43 for Pro XR receiver 45 49 for Pro XRS receiver 46 48 field device data cable pinouts 71 firmware upgrading 60 62 fitting the backpack 55 front panel Pro XR receiver 36 Pro XRS receiver 36 FTP site x G GPS Global Positioning System 2 GPS Pathfinder Power receiver cable pinouts 68 70 cabling 47 49 port 39 specifications 66 standard features 7 GPS Pathfinder Pro XR receiver 3 antenna port 38 back panel 38 cable pinouts 67 69 cabling 41 43 front panel 36 Port A 38 Port B 38 specifications 64 standard features 6 status lights 37 GPS Pathfinder Pro XRS receiver 3 additional features 7 antenna port 38 back panel 38 cable pinouts 67 69 cabling 44 46 front panel 36 Port A 38 Port B 38 specifications 64 standard features 6 status lights 37 GPS Pathfinder Systems receivers 4 GPS MSK beacon equipment 28 IALA 26 integrated beacon antenna 9 specifications 65 integrated beacon receiver 4 integrated satellite differential antenna 11
8. integrated satellite differential receiver 5 integrity monitor 28 International Association of Lighthouse Authorities IALA 26 L LandStar satellite differential service 5 activating 32 marine radio beacons 26 minimum shift keying See MSK MSK beacon receiver 4 analog to digital conversion 29 digital signal processing 30 I O processing 30 pre filtering 29 signal processing 29 MSK modulation 27 Index MSK receiver module acquiring signal 30 automatic gain control 29 identifying modulation rate 30 wide band conversion 29 N NMEA RTCM cable pinouts 69 70 NMEA 0183 output 6 7 O OmniSTAR satellite differential service 5 activating 31 optional equipment range poles 57 tripods 57 vehicle kit 57 overview P PDOP 19 pinouts field device data cable 71 Power data power cable 68 Power NMEA RTCM cable 70 Pro XR XRS data power cable 67 Pro XR XRS NMEA RTCM cable 69 TSC1 data cable 71 Port A on Pro XR XRS receiver 38 Port B on Pro XR XRS receiver 38 port on Power receiver 39 Position Dilution of Precision PDOP 19 postprocessed DGPS 16 postprocessed real time PPRT DGPS 16 GPS Pathfinder Systems Receiver Manual 75 Index Power receiver See GPS Pathfinder Power receiver PPRT DGPS 16 Pro XR receiver See GPS Pathfinder Pro XR receiver Pro XRS receiver See GPS Pathfinder Pro XRS receiver R Racal LandStar satellite differential service activating 32 radio RF band 9 range poles 57 real
9. The FFT algorithm orders the beacon signals by relative strength By filtering and squaring the signals before the FFT stage the MSK modulation rate and the transmitter versus receiver frequency offset for a particular beacon may be determined This signal processing technique permits rapid acquisition of the most powerful MSK signal and automatic identification of the modulation rate In tracking mode the DSP rejects out of channel interference by selectively filtering the desired MSK signal This technique allows the MSK receiver to track a weak differential beacon in the presence of much stronger signals from other radiobeacons The DSP applies dual low noise second order phase locked loops for tracking the MSK carrier phase and symbol phase The DSP coherently demodulates the MSK signal using a MSK matched filter The matched filter offers optimal performance in a Gaussian noise environment In addition the DSP employs a proprietary noise cancellation technique for combating impulse noise MSK I O Processing The MSK I O processor monitors the integrity of the data signal from the DSP formats the RTCM SC 104 data messages and outputs the data GPS Pathfinder Systems Receiver Manual Real Time DGPS Components 3 Worldwide DGPS Beacon Coverage For an up to date list of beacon stations around the world refer to the following Web page e http www trimble com gis beacon Activating the OmniSTAR Satellite Differential Ser
10. Time PPRT DGPS 16 Factors Affecting Postprocessed DGPS Accuracy 17 Number of Visible Satellites 0 17 Multpath ca ee sie dna de dias Boke A ARA as 3 18 Distance Between Reference Station and Rover 18 PDOP usd da a a A at a a 19 SNR rapida EE E Mow MS AA Ge E 19 Elevation Mask rios wom ra E a A e a 19 Occupation Period su 2 a EEE Se Ew EE 20 RECEIVER INDO ua ea a a a da e a 20 Accuracy of the Reference Station Position 21 Synchronized Measurements 00 4 21 Losomo Intervals su sim a eve ws e Ke Se SRR ee ee 21 Real Time DGPS Accuracy 2 0 2 0 00002 eee 23 Update Rate of the Corrections 23 Datum ot Corrections es woe doe ee oe oe eed 23 Real Time DGPS Components NOUS dar a aran dra EE eh a Ee ta 26 GPS Pathfinder Pro XR XRS Beacon Components 26 Real Time DGPS Beacon Components 26 DGPS Reference Station 0 27 Bro dd CASES gy dou Se tear iaa as lol E eS Zi GPS MSK Beacon Equipment 28 Advanced DGPS System Components 28 Intestity Monitor 2 4 6 ema a a 28 CONUOLSIAUOM ee Ge A oe Ghee See es 28 GPS Pathfinder Systems Receiver Manual Contents MSK Beacon Receiver Signal Processing 29 MSKOPre Filtenne 2 a we a SS o E lo do A A 29 MSK Automatic Gain Control 29 MSK Analog to Digital Conversion
11. from state jurisdiction to state jurisdiction Hardware Limited Warranty Trimble warrants that this Trimble hardware product the Product shall be free from defects in materials and workmanship and will substantially conform to Trimble s applicable published specifications for the Product for a period of one 1 year starting from the date of delivery The warranty set forth in this paragraph shall not apply to software firmware products Software and Firmware License Limited Warranty This Trimble software and or firmware product the Software is licensed and not sold Its use is governed by the provisions of the applicable End User License Agreement EULA if any 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 Trimble s 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
12. or to receive files such as software patches utilities service bulletins and FAQs Alternatively access the FTP site from the Trimble website at www trimble com support support htm e Trimble training courses consider a training course to help you use your GPS system to its fullest potential For more information visit the Trimble website at www trimble com support training htm Technical Assistance If you have a problem and cannot find the information you need in the product documentation contact your local Distributor Alternatively do one of the following e Request technical support using the Trimble website at www trimble com support support htm e Send an e mail to trimble_support trimble com X GPS Pathfinder Systems Receiver Manual Your Comments About This Manual Your feedback about the supporting documentation helps us to improve it with each revision To forward your comments do one of the following Send an e mail to ReaderFeedback trimble com e Complete the Reader Comment Form at the back of this manual and mail 1t according to the instructions at the bottom of the form If the Reader Comment Form is not available send comments and suggestions to the address in the front of this manual Please mark 1t Attention Technical Publications Group Document Conventions The document conventions are as follows Convention Italics Helvetica Narrow Helvetica Bold Select Itali
13. packaged within a lightweight rugged weatherproof housing What is the GPS Pathfinder Pro XRS Receiver The GPS Pathfinder Pro XRS receiver is Trimble s most versatile real time GPS mapping receiver in the GPS Pathfinder Systems family By combining a GPS receiver an MSK beacon differential receiver and a satellite differential receiver in a single housing the GPS Pathfinder Pro XRS receiver offers unsurpassed flexibility for choosing a source for real time differential corrections One receiver and antenna is all that is required for the flexibility of receiving GPS signals MSK beacon differential corrections and satellite differential corrections What is the GPS Pathfinder Power Receiver The GPS Pathfinder Power receiver combines high performance GPS reception with real time satellite differential capabilities in a small lightweight durable waterproof housing The unit integrates both the receiver and the antenna in the same housing making it the most comfortable and lightweight receiver in the GPS Pathfinder Systems family GPS Pathfinder Systems Receiver Manual 3 1 4 Overview What Can the GPS Pathfinder Systems Receivers Do The GPS Pathfinder Systems receivers with Trimble controlling software make an ideal system for all GIS data collection and maintenance projects The system allows you to collect precise data for utility urban and natural resource databases As the demand for accurate and up to dat
14. port Figure 4 7 GPS Pathfinder Pro XR receiver field device with custom serial port connection diagram GPS Pathfinder Systems Receiver Manual 43 4 Equipment GPS Pathfinder Pro XRS Cabling To use a GPS Pathfinder Pro XRS receiver with a TSC1 data collector connect the system as shown in Figure 4 8 P N 33580 50 Combined L1 GPS MSK beacon satellite differential antenna P N 22628 Antenna cable P N 33302 51 12 channel Pro XRS receiver P N 17466 Camcorder batteries P N 30232 00 NMEA RTCM cable P N 30231 00 Data power cable P N 24333 Dual battery cable P N 32287 00 TSC1 data ESP cable P N 29673 50 TSC1 data collector O ON O OF BON Figure 4 8 GPS Pathfinder Pro XRS receiver TSC1 connection diagram 44 GPS Pathfinder Systems Receiver Manual Equipment 4 To use a GPS Pathfinder Pro XRS receiver with a field device that has a standard serial port connect the system as shown in Figure 4 9 1 P N 33580 50 Combined L1 GPS MSK beacon satellite differential antenna 2 P N 22628 Antenna cable 3 P N 33302 51 12 channel Pro XRS receiver 4 P N 17466 Camcorder batteries 5 P N 30232 00 NMEA RTCM cable 6 P N 30231 00 Data power cable 7 P N 24333 Dual battery cable 8 P N 30236 Field device data cable 9 Field device with standard serial port Figure 4 9 GPS Pathfinder Pro XRS receiver field device w
15. serial cable can extend the reach of the data power cable to the computer N Warning Pin 9 of the DE 9 connector on the receiver data power cable is powered by the receiver at 12 volts DC with 1 amp capability Power is used to charge the battery in the TSC1 data collector but is not necessary when upgrading the receiver firmware Before connecting this pin to the computer refer to the documentation for the computer GPS Pathfinder Systems Receiver Manual 61 A Upgrading Receiver Firmware Upgrading the Receiver Firmware To perform the receiver firmware upgrade use a personal computer with the Flash Loader 100 software installed and the appropriate tnr file For details on which files you need see Downloading the Firmware Files page 60 To upgrade the receiver firmware l On the computer start the Flash Loader 100 software using one of the following methods Double click the Flash Loader 100 desktop icon Select Flash Loader 100 from the Programs menu By default the software assumes that the receiver is connected to COMI on your computer To change this manually select Options Settings from the menu Alternatively click Find Receiver to let Flash Loader 100 determine which port the receiver is connected to Check the box labeled Upload new firmware A standard File Open dialog appears Navigate to the folder where you downloaded the tnr file from the Trimble FTP site Select 1t and click OK T
16. steps l 10 Place two fully charged batteries in the backpack One battery goes in each of the battery pockets with the connector clips facing up towards the front Connect the battery cable part number 24333 to the two batteries in the battery pockets Screw the antenna pole s onto one of the antenna mounts The poles need to be high enough for the GPS Pathfinder Power receiver to be above your head Install the GPS Pathfinder Power receiver on top of the antenna pole From the outside of the backpack insert the DE9 connector of the field device data cable through the data cable outlet Pull the cable through the data cable strain relief retainer and pull it tight Place the receiver data power cable part number 40492 00 in the sleeve pocket Pull its bulkhead cable connector out of the backpack through one of the antenna cable outlets Connect the bulkhead connector to the GPS Pathfinder Power receiver on top of the pole Connect the TA3 connector on the receiver data power cable to battery cable part number 24333 Place the excess cable in the sleeve pocket GPS Pathfinder Systems Receiver Manual 53 4 54 Equipment 11 Connect the DE9 connector on the receiver data power cable part number 40492 00 to the DE9 connector on the field device data cable 12 For more information see GPS Pathfinder Power Cabling page 47 Alternatively if you need to use the RTCM NMEA cable part number
17. the Pro XR XRS antenna to be above your head Install the Pro XR XRS antenna on top of the antenna pole Attach the antenna cable part number 22628 to the port labeled Ant on the receiver Thread the other end of the antenna cable through the antenna cable outlets and attach it to the antenna Place the excess antenna cable in the device pocket From the outside of the backpack insert the DE9 connector of the field device data cable through the data cable outlet Connect the DE9 connector on the receiver data power cable part number 3023 1 00 to the DEY connector on the field device data cable For more information see GPS Pathfinder Pro XR Cabling page 41 or GPS Pathfinder Pro XRS Cabling page 44 GPS Pathfinder Systems Receiver Manual 51 4 Equipment 12 Pull the data cable through the cable retainer loops on the side of the backpack 13 Connect the field device cable to the field device 14 Close all compartments Loading GPS Pathfinder Power Equipment into the Backpack Figure 4 15 illustrates the features inside the backpack _ Trimble_ Power receiver antenna NO A antenna cable KK antenna pole excess antenna cable i battery pocket mu m battery Figure 4 15 GPS Pathfinder Power receiver in the backpack 52 GPS Pathfinder Systems Receiver Manual Equipment 4 To load the GPS equipment into the backpack open the backpack and follow these
18. the firmware version For example PPW_150 exe is the filename for version 1 50 of the GPS Pathfinder Power firmware These files are self extracting zip files To extract the firmware file run the downloaded executable file from DOS or Windows The resulting unzipped file has the same name as the file you downloaded but has an extension of tnr You also need to download the latest version of the Trimble Flash Loader 100 software and install 1t on the computer Download the file f1100nnn exe where nnn is the version number of the Flash Loader 100 software To install the software run the executable file from within Windows Note The Flash Loader version number has no relation to the GPS Pathfinder Systems receiver firmware version GPS Pathfinder Systems Receiver Manual Upgrading Receiver Firmware A Connecting the Cables To connect a GPS Pathfinder Systems receiver to a personal computer use the GPS receiver data power cable part number 40492 00 for the GPS Pathfinder Power receiver or part number 30231 00 for the GPS Pathfinder Pro XR XRS receiver l Connect the AC power adapter part number 31197 to the TA3 male connector on the GPS receiver data power cable 2 Connect the AC power adapter to a suitable AC power outlet 3 Connect the DE 9 connector on the GPS receiver data power cable to COM port 1 or COM port 2 on the computer The GPS receiver data power cable must be connected to the receiver A standard
19. the pinouts for the GPS Pathfinder Power receiver s NMEA RTCM cable To NMEA To RTCM device device P3 Conn P4 Conn DE9 F DE M 4 5 5 2 2 9 1 3 6 7 8 9 1 3 4 6 7 8 Table B 9 lists the pinouts for the TSC1 data cable Table B 9 To GPS Pathfinder Pro XR Pro XRS or Power receiver cable Conn P1 LEMO OB M Charge RXD1 Pwr On Pwr On TXD1 Gnd Charge Specifications B TSC1 data cable pinout part number 32287 00 6 7 4 out 4 3 out 1 2 in out 5 in TSC1 data collector 7 Cond Cbl 1 Black Red Blue White Brown Shield Green Conn P2 DE9 M 9 Charge 2 RXD1 4 Chg Ctrl 7 Pwr On 3 TXD1 5 Sig Gnd 8 RTS Table B 10 lists the pinouts for the field device data cable Table B 10 To GPS Pathfinder Pro XR Pro XRS or Power receiver Event In TXD RXD Chg Ctrl Sig Gnd DSR Pwr On CTS Charge Field device data cable pinout part number 30236 Conn P1 DE9 F 1 out oO O N Os oa AJIJ Wy PM Field device 7 Cond Cbil 1 Conn P2 DE9 M White 1 CD Orange 2 RXD Red 3 TXD Black 4 DIR Shield 5 Sig Gnd lt 6 DSR Brown 7 RTS Green 8 CTS Blue 9 RI GPS Pathfinder Systems Receiver Manual 71 B Specifications 72 GPS Pathfinder Systems Receiver Manual Index A accuracy distance between reference station and roving receiver 18 elevation mask 19 factors affecting 17 logging intervals 21 multipath 18 number of visible satellites 17 occupation period 20 PDOP 19 rec
20. time DGPS 15 real time DGPS accuracy 23 datum of corrections 23 update rate of corrections 23 reference station logging interval for 22 using a 12 channel receiver 20 See also base station release notes x rover receiver logging interval for 22 RTCM SC 104 input 5 6 7 RTCM SC 104 messages 26 30 S satellite differential correction service 5 activating 31 SNR 19 specifications combined L1 GPS beacon satellite differential antenna 65 integrated GPS beacon antenna 65 Power receiver 66 Pro XR receiver 64 Pro XRS receiver 64 76 GPS Pathfinder Systems Receiver Manual status lights Pro XR receiver 37 Pro XRS receiver 37 T tripods 57 TSC1 data cable pinouts 71 TSC1 data collector connecting to Power receiver 47 connecting to Pro XR receiver 41 connecting to Pro XRS receiver 44 TSIP protocol 6 U update notes x upgrading firmware 62 connecting the cables 61 downloading files 60 V VBS 5 vehicle kit 57 virtual base station 5 virtual reference station 5 VRS 5 W World Wide Web site ix www omnistar com 5 www racal landstar com 5 www trimble com ix Reader Comment Form GPS Pathfinder Systems Receiver Manual April 2001 P N 40889 00 ENG Revision B We appreciate your comments and suggestions for improving this publication Contributors of particularly helpful evaluations will receive a thank you gift I use the following Trimble product for Please circle a response for each of the statemen
21. upon your return of any Nonconforming Product to Trimble in accordance with Trimble s standard return material authorization procedures Warranty Exclusions and Disclaimer These warranties shall be applied only in the event and to the extent that 1 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 11 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 1 the combination or utilization of the Product or Software with products information data systems or devices not made supplied or specified by Trimble 11 the operation of the Product or Software under any specification other than or in addition to Trimble s standard specifications for 1ts products 111 the unauthorized modification or use of the Product or Software 1v 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 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 MAT
22. uses satellite differential corrections to provide submeter position accuracy To receive and decode these satellite signals a subscription to a satellite differential correction service is required The GPS Pathfinder Pro XRS and Power receivers support two satellite differential correction services For information on obtaining a subscription subscription rates and satellite coverage maps visit the following websites e www omnistar com e www racal landstar com Once you have a subscription you activate the service through an on the air signal or an encrypted activation message entered into the controlling software Satellite differential signals provide valid corrections over a large area Integrated virtual reference base station VRS VBS technology permits the satellite corrections to be uniformly accurate over the entire satellite coverage area without the degradation in accuracy associated with increasing distance from fixed reference stations Satellite differential signals are line of sight and can be blocked by mountains buildings or tree canopy Wet canopy from a heavy rain reduces the signals even more The same environmental factors that affect the GPS signal such as radar and microwave transmitters can interfere with the satellite signal Power lines usually have no effect External Differential Correction Receiver The GPS Pathfinder Systems receivers can also receive differential corrections from any external dif
23. 40887 00 follow these steps instead Connect the DE9 connector on the receiver data power cable part number 40492 00 to the DE9 connector on the RTCM NMEA cable part number 40887 00 labeled To Receiver Connect the DE9 connector on the RTCM NMEA cable labeled To Data Logger to the DE9 connector on the field device data cable For more information see GPS Pathfinder Power Cabling page 47 If required connect the port of the RTCM NMEA cable labeled RTCM In to the external differential correction receiver If required connect the port of the RTCM NMEA cable labeled Data Out to the device requiring NMEA Pull the data cable through the cable retainer loops on the side of the backpack 13 Connect the field device cable to the field device 14 Close all compartments GPS Pathfinder Systems Receiver Manual Equipment 4 Fitting the Backpack Figure 4 16 illustrates the front and back views of the backpack Figure 4 16 Backpack adjustment front and back views It is important that the Trimble backpack fits you for maximum comfort and efficiency To optimize the fit of the backpack follow these instructions 1 Load the GPS equipment into the backpack see Loading GPS Pathfinder Pro XR XRS Equipment into the Backpack page 50 or Loading GPS Pathfinder Power Equipment into the Backpack page 52 2 Loosen the hip belt the stabilizer straps and the shoulder straps GPS Pathfinder S
24. 9 V In 1 Wht V Out from battery Blue 12 PPS gt 1 PPS Shield 5 11 Sig Gnd 5 Body Sig Gnd 2 BIk V Out V In from battery No 1 4 9 4 Conneci 68 GPS Pathfinder Systems Receiver Manual Table B 7 To GPS Pathfinder Pro XR XRS receiver Specifications B Table B 7 lists the pinouts for the GPS Pathfinder Pro XR XRS receiver s NMEA RTCM cable NMEA RTCM cable pinout part number 30232 00 Conn P1 Event In 1 in TX 232 2 out RX 232 3 in Chg Ctrl 4 in Sig Gnd 5 in out TX 422 6 out Pwr On 7 in RX 422 8 out Charge 9 out V In 10 in V In 11 in PPS 12 9 Cond Cbl 1 Red Shield NMEA RTCM output connectors Conn P2 DE9 M 2 RXD Sig Gnd Pwr 7 Conn Cbl 1 Orange Shield Brown Conn P3 DE9 F 2 TXD 5 Sig Gnd 4 DIR GPS Pathfinder Systems Receiver Manual 69 B Specifications Table B 8 To GPS Pathfinder Power receiver s data power Color Scheme Blue Black Black Shield Red Black Black Green No Connect P1 Conn DE9 M 4 0 N O O W DP co cable part number 40492 00 P1 Description 1 PPS gt Data In to data logger Data Out from data logger Sig Gnd lt gt Data In to NMEA device Power On Data Out from RTCM device tt V In lt amp 70 GPS Pathfinder Systems Receiver Manual NMEA RTCM cable pinout part number 40887 00 To data collector cable P2 Conn DE9 F 9 BLK 1 4 6 8 Table B 8 lists
25. ERIALS ARE PROVIDED AS IS AND WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND BY EITHER TRIMBLE 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 GREATER OF THE AMOUNT PAID BY YOU FOR THE PRODUCT OR SOFTWARE LICENSE OR U S 25 00 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 OT
26. HER PECUNIARY LOSS REGARDLESS WHETHER TRIMBLE HAS BEEN ADVISED OF THE POSSIBILITY OF ANY SUCH LOSS AND REGARDLESS OF 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 Notices Class B Statement Notice to Users This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and 1f not installed and used in accordance with the instructions may cause harmful interference to radio communication However there is no guarantee that interference will not occur in a particular installation If this 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 of the following measures Reorient or relocate the receiving antenna 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 1s connected Consult the de
27. R antenna Table B 2 Parameter General Size Weight Temperature Humidity Case Integrated GPS beacon antenna specifications Specification Right hand circular polarized omnidirectional hemispherical coverage 15 5 cm diameter x 10 8 cm high 6 1 x 4 2 0 49 kg 1 08 Ib 30 C to 65 C 22 F to 149 F operating 40 C to 85 C 40 F to 185 F storage 100 fully sealed Dustproof waterproof shock resistant Table B 3 lists specifications for the GPS Pathfinder Pro XRS antenna Table B 3 Parameter General Size Weight Humidity Case Combined L1 GPS beacon satellite differential antenna specifications Specification Right hand circular polarized omnidirectional hemispherical coverage 15 5 cm diameter x 14 cm high 6 1 x 5 5 0 55 kg 1 2 Ib 100 fully sealed Dustproof waterproof shock resistant GPS Pathfinder Systems Receiver Manual 65 B 66 Specifications Table B 4 lists specifications for the GPS Pathfinder Power combined receiver and antenna Table B 4 GPS Pathfinder Power receiver specifications Parameter General Casing Update Rate Time to First Fix Size Weight Power Temperature Humidity Specification 12 channel L1 CA code tracking with carrier phase filtered measurements Integrated GPS L1 satellite differential receiver antenna with optional EVEREST multipath rejection technology upgrade Fully sealed dustproof waterproo
28. a in your rover file to obtain sufficient accuracy on your positions When using postprocessed DGPS the reference station stores the correction values in base data files on a computer Many reference station owners provide their base data to the community through the Internet or other means of communication Often this means that you do not have to set up your own reference station for postprocessed DGPS but can use an existing one For a list of available reference stations visit the Trimble website www trimble com Postprocessed Real Time PPRT DGPS Postprocessed DGPS positions are generally more accurate than DGPS positions obtained in real time If you are not satisfied with your real time DGPS position accuracy you can postprocess the real time DGPS positions provided that you have access to suitable reference station base data files The accuracy using PPRT DGPS is the same as for postprocessed DGPS see previous section 16 GPS Pathfinder Systems Receiver Manual Accuracy 2 Factors Affecting Postprocessed DGPS Accuracy The accuracy that you obtain after data collection depends on several factors including Number of visible satellites Multipath Distance between reference station and rover recelvers Position Dilution of Precision PDOP Signal to noise ratio SNR Satellite elevations Occupation time at a point Receiver type at reference station Accuracy of the reference station position In addition t
29. al beacon broadcasts conforming to the IALA standard Real Time DGPS Beacon Components Real time DGPS beacons require the following three components for a complete system architecture see Figure 3 1 DGPS reference station Broadcast site e GPS MSK beacon equipment GPS Pathfinder Systems Receiver Manual Real Time DGPS Components 3 Radio transmitter o Differential A corrections Reference station ss O Reference station receiver GPS Pathfinder Systems receiver Figure 3 1 Components of a DGPS system DGPS Reference Station DGPS relies on GPS error corrections calculated by a reference station placed at a precisely known location The reference station measures the ranges to each satellite and calculates the magnitude and rate of change of error in each measurement based on 1ts known location Broadcast Site A broadcast site is a radio beacon transmitting correction data in the 283 5 to 325 kHz band The GPS error corrections from the reference station are modulated on the radio beacon broadcast using minimum shift keying MSK modulation GPS Pathfinder Systems Receiver Manual 27 3 Real Time DGPS Components GPS MSK Beacon Equipment The MSK beacon component of the GPS Pathfinder Pro XR XRS receiver tracks and demodulates the DGPS broadcasts from differential beacons and o
30. aler 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 Contents About This Manual 1 Overview INTOdUCION see g E E A FOS 2 WII ES A A da e OEE A ches ce A ee 2 What is the GPS Pathfinder Pro XR Receiver 3 What is the GPS Pathfinder Pro XRS Receiver 3 What is the GPS Pathfinder Power Receiver 3 What Can the GPS Pathfinder Systems Receivers Do 4 Integrated Beacon Receiver 4 Integrated Satellite Differential Receiver 5 External Differential Correction Receiver 5 Standard GPS Pathfinder Pro XR XRS Features 6 Additional GPS Pathfinder Pro XRS Receiver Features 7 Standard GPS Pathfinder Power Features 7 Antenna Options cs de acer eres BERR Bas E Ee Re A eS 8 Integrated GPS MSK Beacon Antenna 9 Combined L1 GPS Beacon Satellite Differential Antenna 10 Integrated L1 GPS Satellite Differential Antenna 11 GPS Pathfinder Systems Receiver Manual v Contents 2 vi Accuracy MOCHO Peares aa a oe ee eee ee 14 Differential GPS Positioning 14 Real line DEE Sena amp ot ar SEDA a as 15 Postprocessed DGES a du ur a iras A de 16 Postprocessed Real
31. anual 23 2 Accuracy 24 GPS Pathfinder Systems Receiver Manual CHAPTER Real Time DGPS Components In this chapter Introduction GPS Pathfinder Pro XR XRS beacon components Real Time DGPS beacon components Advanced DGPS system components MSK beacon receiver signal processing Worldwide DGPS beacon coverage Activating the OmniSTAR satellite differential service Activating the Racal LandStar satellite differential service 3 26 Real Time DGPS Components Introduction The GPS Pathfinder Systems receivers have integrated real time DGPS making 1t simple for you to collect or maintain your GPS data in real time This chapter provides an introduction to the advanced operating characteristics of the MSK beacon component of the GPS Pathfinder Pro XR XRS receiver It also outlines the necessary steps to activate a satellite differential component of the GPS Pathfinder Pro XRS or Power receiver GPS Pathfinder Pro XR XRS Beacon Components The International Association of Lighthouse Authorities IALA has established a standard for modulating DGPS corrections in the RTCM SC 104 format on marine radiobeacon broadcasts using minimum shift keying MSK modulation The differential beacons are a subset of the large number of existing marine radiobeacons which operate in the 283 5 to 325 kHz band The MSK beacon component of the GPS Pathfinder Pro XR XRS receiver is a radiobeacon receiver that tracks and demodulates differenti
32. ata is interpolated at seconds 1 2 3 and 4 A slight degradation of accuracy occurs with interpolation One in five of the rover positions is not interpolated GPS Pathfinder Systems Receiver Manual Accuracy 2 Real Time DGPS Accuracy Real time DGPS offers similar accuracies to postprocessed GPS However in addition to the factors discussed in Factors Affecting Postprocessed DGPS Accuracy page 17 there are other factors that affect the accuracy of real time DGPS positions These factors include e Update rate of the corrections Corrections based on a different datum Update Rate of the Corrections The frequency or rate at which the RTCM differential correction messages are output from the reference station affects the accuracy of the GPS positions recorded by the roving receiver The latency of the corrections that is the time it takes for up to date information to get from the reference station to the rover also affects the rover position accuracy Datum of Corrections Errors can occur 1f the reference stations use a datum other than WGS 84 as the basis for the DGPS corrections The error introduced by using a reference station that transmits coordinates using a different datum is generally quite small However in some places the margin of error can be 5 10 meters To avoid this type of error you can set the controlling software to collect postprocessable real time PPRT data GPS Pathfinder Systems Receiver M
33. atellites are spread around the sky the PDOP value is low and the computed position 1s more accurate When the satellites are grouped closely together the PDOP value is high and the computed position 1s less accurate The lower the PDOP value the more accurate the GPS positions You can configure the PDOP mask so that 1f the PDOP exceeds the mask value the controlling software stops logging positions A PDOP mask of 6 1s required for submeter accuracy SNR SNR signal to noise ratio 1s a measure of the satellite signal strength relative to the background noise A strong signal with low noise provides better accuracy To compute positions with strong signals the SNR mask should be set to 6 or more In areas of dense canopy the SNR mask can be lowered to 3 Although you may not achieve submeter accuracy this provides the ability to collect GPS positions in marginal areas Elevation Mask When a satellite is low on the horizon the GPS signals must travel a great distance through the atmosphere delaying reception by the receiver You can minimize noisy data by adjusting the elevation mask Satellites below the mask are excluded from the position computation For best results the recommended setting 1s 15 E N Warning If the elevation mask is too low the rover may use a satellite that the reference station cannot see If this occurs some data cannot be differentially corrected by postprocessing To avoid this situation make
34. axial antenna cable also carries DC power to the pre amplifier of both the L1 GPS and beacon antennas over the center conductor of the cable The L1 GPS antenna and a beacon antenna are integrated into a single antenna assembly as shown in Figure 1 1 The antenna assembly is completely weatherproof and is designed to withstand harsh environmental conditions Figure 1 1 Integrated GPS MSK beacon antenna for the GPS Pathfinder Pro XR receiver GPS Pathfinder Systems Receiver Manual 9 1 10 Combined L1 GPS Beacon Satellite Differential Antenna The GPS Pathfinder Pro XRS receiver s integrated Ll GPS beacon satellite differential antenna part number 33580 50 features two antenna components L1 GPS satellite differential antenna This active antenna is designed to filter out unwanted signals and amplify the L1 GPS and satellite differential signals for transmission over the antenna cable to the receiver e MSK H field loop beacon antenna This antenna features a pre amplifier for filtering out signal interference such as AM radio broadcasts and noise from switching power supplies After filtering the pre amplifier amplifies the MF signal for transmission over the same antenna cable to the beacon receiver The coaxial antenna cable also carries DC power to the pre amplifier of both the L1 GPS satellite differential and beacon antennas over the center conductor of the cable The antenna assembly integrates the L1 GPS sa
35. cs Italics Definition Identifies software menus menu commands dialog boxes and the dialog box fields Represents messages printed on the screen Identifies a software command button or represents information that you must type ina software screen or window Identifies the sequence of menus commands or dialog boxes that you must choose in order to reach a given screen Is an example of a hardware function key that you must press on a personal computer PC If you must press more than one of these at the same time this is represented by a plus sign for example Ctrl C GPS Pathfinder Systems Receiver Manual xi About This Manual xii GPS Pathfinder Systems Receiver Manual CHAPTER Overview In this chapter Introduction What is GPS What is the GPS Pathfinder Pro XR receiver What is the GPS Pathfinder Pro XRS receiver What is the GPS Pathfinder Power receiver What can the GPS Pathfinder Systems receivers do Standard GPS Pathfinder Pro XR XRS features Standard GPS Pathfinder Power features Antenna options 1 2 Overview Introduction The GPS Pathfinder Systems receivers are Trimble s high performance GPS receivers They can be operated with one of the following controlling software systems as part of an effective GIS data collection and maintenance system e Trimble s Asset Surveyor software running on the rugged TSC1 data collector Note Version 5 20 or later
36. e information see Synchronized Measurements page 21 GPS Pathfinder Systems Receiver Manual 21 2 Accuracy Table 2 1 If the synchronized measurement logging interval at the reference is l second you can use any logging interval at the rover However this generates a large file at the reference station If the computer or data collector at the reference station runs out of space you cannot differentially correct any rover data collected after the base file ends When disk space is at a premium the best option is a 5 second logging interval for synchronized measurement data at the reference station and a 5 second logging interval for positions at the rover This 1s frequent enough to be practical at the rover and uses the default reference station logging interval which results in base files that are not too large Table 2 1 gives examples of various reference station and rover intervals and their effect on accuracy They are valid for both postprocessed and real time corrections Logging Interval Accuracy Reference station Rover interval Base data Notes interval seconds seconds interpolated 5 22 1 No Recommended for best accuracy 5 No Recommended if reference station disk space is at a premium 3 or 5 or 6 etc No The rover interval is a direct integer multiple of the reference station interval 10 No The rover interval is a direct integer multiple of the reference station interval 1 Yes Base d
37. e position and attribute information increases the system allows you to update existing GIS data ensuring that decisions made with the GIS are based upon the most accurate current and reliable data available The foundation of the GPS Pathfinder Systems receivers is precise GPS positioning technology The GPS receivers feature 12 channels of continuous satellite tracking Using differential GPS the GPS Pathfinder Systems receivers deliver differentially corrected C A code positions to submeter accuracy on a second by second basis under the most challenging operating conditions Integrated Beacon Receiver The MSK beacon receiver is included in the GPS Pathfinder Pro XR XRS receiver It allows you free access to real time solutions transmitted from DGPS radiobeacons operating in the MF medium frequency band from 283 5 kHz to 325 kHz The integrated MSK beacon receiver is an advanced dual channel radiobeacon receiver It tracks broadcasts from DGPS radiobeacons conforming to the ALA Standard The beacon receiver uses its all digital signal processing techniques to track and demodulate signals from DGPS radiobeacons For an up to date list of beacon stations visit the following Web page e http www trimble com gis beacon GPS Pathfinder Systems Receiver Manual Overview 1 Integrated Satellite Differential Receiver The integrated satellite differential capability of the GPS Pathfinder Pro XRS and Power receivers decodes and
38. ed Measurements To obtain optimal accuracy from differential correction the reference station must record reference data or output differential corrections from synchronized measurements Synchronized measurements occur when the reference station receiver and rover receivers simultaneously make measurements to all the satellites they are tracking When you use one of the receivers listed in Receiver Type page 20 as a reference station receiver the data is always synchronized When measurements are not synchronized there is no equivalent reference station position measured at exactly the same time as the rover position A simultaneous reference station position must be interpolated which reduces accuracy Logging Intervals Ideally the logging interval at the reference station should be the same as the logging interval at the rover For example if the reference station is using a 5 second logging interval the rover logging interval should be 5 seconds The rover logging interval can also be a direct integer multiple of the interval at the reference station For example if the reference station is logging every 5 seconds the rover can log every 10 seconds If the rover logging interval is not synchronized with the reference station the accuracy of the GPS positions logged by the rover may not be submeter This is because the reference station measurements must be interpolated to correct the roving receiver s measurements For mor
39. eiver type 20 reference station position 21 SNR 19 synchronized measurements 21 activating LandStar satellite differential service 32 OmniSTAR satellite differential service 31 advanced DGPS components 28 analog to digital conversion 29 antenna options 8 combined L1 GPS beacon satellite differential antenna 10 integrated GPS MSK beacon antenna 9 integrated L1 GPS satellite differential antenna 11 antenna port on Pro XR XRS receiver 38 B back panel Pro XR receiver 38 Pro XRS receiver 38 backpack 50 fitting 55 loading Power equipment 52 loading Pro XR equipment 50 loading Pro XRS equipment 50 use and care 56 base station logging interval for 22 using a 12 channel receiver 20 See also reference station broadcast site 27 C cable pinouts field device data cable 71 Power data power cable 68 Power NMEA RTCM cable 70 Pro XR XRS data power cable 67 Pro XR XRS NMEA RTCM cable 69 TSC1 data cable 71 cabling for upgrading receiver firmware 61 Power receiver 47 49 Pro XR receiver 41 43 Pro XRS receiver 44 46 GPS Pathfinder Systems Receiver Manual 73 Index care of backpack 56 CE Mark compliance 6 8 combined L1 GPS beacon satellite differential antenna 10 specifications 65 connection diagrams Power receiver 47 49 Pro XR receiver 41 43 Pro XRS receiver 44 46 control station 28 D data power cable pinouts 67 68 Department of Defense 2 DGPS 14 postprocessed 16 postprocessed real time PPRT 16 real time 15
40. f shock resistant 1 Hz lt 30 seconds typical 15 5 cm diameter x 10 8 cm high 6 1 x 4 2 0 52 kg 22 oz 3 1 W 9 to 32 V 30 C to 65 C 22 F to 149 F operating 40 C to 85 C 40 F to 185 F storage 100 fully sealed GPS Pathfinder Systems Receiver Manual Pinouts Table B 5 To GPS Pathfinder Pro XR XRS Specifications Table B 5 lists the pinouts for the GPS Pathfinder Pro XR XRS receiver s data power cable Data power cable pinout part number 30231 00 7 Cond Cbl 1 receiver Conn P1 Event In 1 in TXD 2 out Orange RXD 3 in Red Chg Ctrl 4 in Black Sig Gnd 5 in out Shield DSR 6 out Yellow Pwr On 7 in Brown CTS 8 out Green Charge 9 out Blue V In 10 in V In 11 in PPS 12 Data Collector Conn P2 DE9 F o ONO 0 A W N RXD TXD DTR Sig Gnd DSR RTS CTS RI GPS Pathfinder Systems Receiver Manual Input Power 2 Conn Cbl 2 Conn P3 TA3 M White 1 V In Black 2 V Out B 67 B Specifications Table B 6 lists the pinouts for the GPS Pathfinder Power receiver s data power cable Table B 6 Data power cable pinout part number 40492 00 To GPS Pathfinder Power receiver To Data Collector Input Power Color P1 Conn P1 Desc P2 Conn P2 P3 Conn P3 Desc Scheme ConXall F DE9 F Desc TA3 M Orange 2 Data Out 6 Port A gt Red 3 Data In 8 Port A Yellow 6 Data Out 2 Port B gt Brown 7 Pwr on lt 7 Green 8 Data In 3 Port B Black 10 V In
41. ferential correction receiver that communicates in the standard RTCM SC 104 data format GPS Pathfinder Systems Receiver Manual 5 1 Overview Standard GPS Pathfinder Pro XR XRS Features The GPS Pathfinder Pro XR XRS receiver offers the following e 12 channel DGPS receiver with EVEREST multipath rejection technology L1 C A code tracking with carrier phase smoothing and instantaneous full wavelength carrier phase measurements e Submeter MCORR400 accuracy typically less than 50 cm RMS assumes at least 5 satellites PDOP less than 6 and corrections from a Trimble Reference Station TRS 4000RS or Trimble Community Base Station with EVEREST multipath rejection technology e 1 Hz position and velocity update rate e Velocity computations incorporate carrier phase data e Time to First Fix typically less than 30 seconds e Two RS 232 serial ports e NMEA 0183 output to external NMEA devices supported messages are ALM GGA GLL GSA GSV VTG and ZDA e RTCM SC 104 input from an external differential correction receiver e TSIP protocol to from the data collector e Fully automatic and manual beacon operating modes fast acquisition of differential beacon signals e Immunity to MSK jamming signals advanced techniques for combating atmospheric noise in the beacon receiver e Integrated GPS MSK beacon antenna e User upgradeable receiver firmware e Receiver manual e CE Mark compliance 6 GPS Pathfinder Sys
42. he following conditions must be met to obtain submeter accuracy Synchronized measurements are logged at the reference station The logging interval for the roving receiver is the same as or a multiple of the logging interval at the reference station The reference station uses the correct antenna For more information on GPS data accuracy refer to Chapter 4 of the Mapping Systems General Reference Number of Visible Satellites Generally you need a minimum of four satellites to get a good position If you have five or more satellites accuracy increases by a small amount You can obtain positions from only three satellites by supplying a height value manually However Trimble recommends that you do not use this method as an inaccurate height can significantly reduce horizontal accuracy GPS Pathfinder Systems Receiver Manual 17 2 18 Accuracy Use the Asset Surveyor or ASPEN software to configure the receiver to use a minimum of five satellites Overdetermined 3D four satellites 3D or three satellites 2D Note The TerraSync software always uses a minimum of four satellites You cannot configure this setting When the number of visible satellites drops below the required number the controlling software stops logging positions and displays the message Too few satellites Multipath GPS signals are sometimes reflected off nearby objects particularly metallic objects creating false or erroneous results T
43. he software will take a few seconds to process this file Click Proceed to transfer the new firmware to the receiver This may take several minutes When the process is complete click the cross in the top right corner of the window to close the Flash Loader 100 program N Warning Do not turn off the computer or disconnect power to the receiver Do not disconnect the cables between the computer and the receiver Doing this will interrupt the update process 62 GPS Pathfinder Systems Receiver Manual APPENDIX B Specifications In this appendix m Introduction m Specifications m Pinouts B Specifications Introduction This appendix lists specifications for GPS Pathfinder Systems receivers and antennas and pinouts for cables that are supplied with the receivers Specifications Table B 1 lists specifications for the GPS Pathfinder Pro XR XRS receiver Table B 1 GPS Pathfinder Pro XR XRS receiver specifications Parameter Specification General Fully sealed dustproof waterproof shock resistant Update Rate 1 Hz Time to First Fix lt 30 seconds typical Size 11 1 cm x 5 1 cm x 19 5 cm 4 4 x 2 0 x 7 7 Weight 0 76 kg 1 68 Ib Power 5 W maximum Temperature 30 C to 65 C 22 F to 149 F operating 40 C to 85 C 40 F to 185 F storage Humidity 100 non condensing 64 GPS Pathfinder Systems Receiver Manual Specifications B Table B 2 list specifications for the GPS Pathfinder Pro X
44. his phenomenon 1s known as multipath Severe multipath can induce position errors of many meters while mild multipath may cause small undetectable errors Optimal accuracy 1s obtained by collecting data in an environment that 1s free of large reflective surfaces like buildings and trees The GPS Pathfinder Systems receiver s EVEREST multipath reduction option helps reduce the effects of multipath Note If you have purchased a GPS Pathfinder Power receiver with part number 40888 85 ENG this option is not installed If you want to purchase the option upgrade for this functionality contact your local dealer Distance Between Reference Station and Rover When you postprocess GPS Pathfinder Pro XR XRS data using the GPS Pathfinder Office Differential Correction utility the horizontal accuracy of the positions received is 50 cm RMS at a 1 km base line distance from reference station Accuracy degrades by 1 ppm as the distance between reference station and rover increases This means that 1 mm of degradation occurs for every kilometer between the reference station and rover You must collect data within 500 km 310 miles of your reference station to obtain submeter accuracy for the GPS Pathfinder Pro XR XRS receiver GPS Pathfinder Systems Receiver Manual Accuracy 2 PDOP PDOP Position Dilution of Precision 1s a unitless measure of the current satellite geometry It indicates when the most accurate results are provided When s
45. inder Pro XR XRS Status Lights GPS Unit not powered up Tracking satellites Performing position fixes using autonomous GPS Performing position fixes using differential GPS DGPS Unit not powered up or DGPS function is disabled Searching for DGPS signals from MSK radio beacon Searching for DGPS signals from satellite differential provider Not applicable for Pro XR receiver Differential corrections are being received from MSK radio beacon Differential corrections are being received from satellite differential provider Not applicable for Pro XR receiver GPS Pathfinder Systems Receiver Manual 37 4 Equipment GPS Pathfinder Pro XR XRS Back Panel The GPS Pathfinder Pro XR XRS receiver has two serial communications RS232 ports and an antenna cable port The serial communications ports shown in Figure 4 2 are 12 pin male bulkhead connectors located on the back panel of the receiver Figure 4 2 GPS Pathfinder Pro XR XRS receiver back panel Port A Port A offers RS 232 communication standards It is designed for NMEA 0183 output and RTCM input Port B Port B also offers RS 232 communication standards It is designed for two way data flow external sensor input and power Antenna Port The antenna connector 1s a TNC female connector located on the far right on the back panel of the GPS Pathfinder Pro XR XRS receiver 38 GPS Pathfinder Systems Receiver Manual Equipment 4 GPS Pathfinder Po
46. is required for use with the GPS Pathfinder Power receiver e Trimble s TerraSync software running on a user supplied Microsoft Windows CE field device Note Version 1 20 or later is required for use with the GPS Pathfinder Power receiver Trimble s ASPEN software running on a user supplied notebook or pen computer GPS Pathfinder Pro XR XRS receiver only The GPS Pathfinder Systems receivers use integrated differential GPS to provide submeter position accuracy on a second by second basis NMEA 0183 messages and raw measurements in TSIP Trimble Standard Interface Protocol are also available offering optimal flexibility when interfacing with other instruments What is GPS The Global Positioning System GPS is a satellite based positioning system operated by the U S Department of Defense DoD Over 24 operational NAVSTAR satellites orbit the earth every 12 hours providing worldwide all weather 24 hour time and position information For more information about GPS concepts refer to the Mapping Systems General Reference GPS Pathfinder Systems Receiver Manual Overview 1 What is the GPS Pathfinder Pro XR Receiver The GPS Pathfinder Pro XR receiver includes a differential GPS receiver module and a fully automatic dual channel MSK beacon receiver module for receiving DGPS Differential GPS broadcasts conforming to the IALA International Association of Lighthouse Authorities standard These components are
47. ith standard serial port connection diagram GPS Pathfinder Systems Receiver Manual 45 4 Equipment To use a GPS Pathfinder Pro XRS receiver with a field device that has a customized serial port connect the system as shown in Figure 4 10 P N 33580 50 Combined L1 GPS MSK beacon satellite differential antenna P N 22628 Antenna cable P N 33302 51 12 channel Pro XRS receiver P N 17466 Camcorder batteries P N 30232 00 NMEA RTCM cable P N 30231 00 Data power cable P N 24333 Dual battery cable P N 43197 Null modem adapter Custom data cable O Field device with custom serial port Figure 4 10 GPS Pathfinder Pro XRS receiver field device with custom serial port connection diagram 46 GPS Pathfinder Systems Receiver Manual Equipment 4 GPS Pathfinder Power Cabling To use a GPS Pathfinder Power receiver with a TSC data collector connect the system as shown in Figure 4 11 Use the RTCM NMEA cable part number 40887 00 only 1f you need to cable in RTCM corrections and or output NMEA data from the receiver P N 38198 50 GPS Pathfinder Power receiver P N 40492 00 Data power cable P N 17466 Camcorder batteries P N 24333 Dual battery cable P N 32287 00 TSC1 data ESP cable P N 29673 50 TSC1 data collector P N 40887 00 RTCM NMEA cable Figure 4 11 GPS Pathfinder Power receiver TSC1 connection diagram
48. lly amplifies the filtered MF signal to an optimal level for the analog to digital conversion stage MSK Analog to Digital Conversion The analog MF signals are converted into digital signals for the digital signal processing stage Unlike most other receivers the MSK receiver uses a wide band conversion This technique improves acquisition performance by allowing a broader range of beacon signals to pass to the signal processing stage for evaluation The wide band technique also improves signal processing by eliminating the need for dedicated mixing stages that can generate non linearities in the frequencies of interest In addition the wide band analog to digital conversion enables the use of special digital noise reduction techniques for handling impulse noise This permits a highly adaptable and optimized response to impulse noise such as lightning GPS Pathfinder Systems Receiver Manual 29 3 30 Real Time DGPS Components MSK Digital Signal Processing Controlled by proprietary processing algorithms the MSK digital signal processor DSP digitally filters the wide band sample selects the best beacon signal and passes the selected signal through a matched filter to the I O processor In addition the DSP measures signal level noise level and frequency offset During the signal acquisition process the DSP employs a 128 point FFT Fast Fourier Transform algorithm for evaluating the spectral content of the digitized signal
49. nge poles and tripods are very useful when collecting carrier phase data With a range pole or tripod you can measure the antenna height more accurately and hold the antenna still more easily than you can with an antenna mounted on the backpack Optional Vehicle Kit The optional vehicle kit contains useful accessories for working in a car boat or plane including e magnetic mount e vehicle power cable e quick release for the antenna GPS Pathfinder Systems Receiver Manual 57 4 Equipment 58 GPS Pathfinder Systems Receiver Manual APPENDIX Upgrading Receiver Firmware In this appendix m Introduction m Downloading the firmware files m Connecting the cables E Upgrading the receiver firmware A 60 Upgrading Receiver Firmware Introduction This appendix provides instructions for upgrading the firmware in the GPS Pathfinder Systems receivers The procedure for upgrading the firmware is as follows 1 Download the upgrade files 2 Connect the receiver to a personal computer 3 Upgrade the firmware from the personal computer using the upgrade files Downloading the Firmware Files You can download upgrade firmware files from Trimble s FTP site e ftp ftp trimble com pub mapping bin To upgrade the firmware for this receiver download this file GPS Pathfinder Pro XR XR_nnn exe GPS Pathfinder Pro XRS XRS_nnn exe GPS Pathfinder Power PPW_nnn exe The nnn in the filename represents
50. orizontal accuracy of each position 1s better than 50 cm RMS 1 part per million ppm times the distance between the base and the rover For the GPS Pathfinder Power receiver the horizontal accuracy 1s better than 1 m RMS 1 ppm Using real time corrections the accuracy of each position can be as good as submeter but 1s subject to a number of operational conditions Note RMS means that approximately 68 of the positions are within the specified value Differential GPS Positioning Differential GPS DGPS requires two or more receivers One receiver called the reference station 1s located at a known point to determine the GPS measurement errors and compute corrections to these errors An unlimited number of mobile GPS Pathfinder Systems receivers commonly called rovers collect GPS data at unknown locations within the vicinity of the reference station Errors common at both the reference and rover receivers are corrected with DGPS either in real time or during postprocessing Note For more information about GPS and DGPS review the All About GPS tutorial on the Trimble website www trimble com The GPS Pathfinder Systems receivers in combination with Trimble controlling software and the GPS Pathfinder Office software provide three ways of obtaining submeter positions e Real time DGPS e Postprocessed DGPS e Postprocessed real time DGPS GPS Pathfinder Systems Receiver Manual Accuracy 2 The accuracy figure
51. ot Bee EE Oo eee Ea 61 Upgrading the Receiver Firmware 004 62 Specifications MTrOCUCION sra eat Bae aa we ah Se a SE E 64 SPECIICACIONS hos 3 4 4 He kOe Oe is E 64 PENOU srs e ir E He Ol ts ees ae 67 Index GPS Pathfinder Systems Receiver Manual About This Manual Welcome to the GPS Pathfinder Systems Receiver Manual This manual describes how to use Trimble s GPS Pathfinder Pro XR Pro XRS and Power receivers 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 visit our website for an interactive look at Trimble and GPS at www trimble com GPS Pathfinder Systems Receiver Manual ix About This Manual Related Information Other sources of related information are e Release notes the release notes describe new features of the product information not included in the manuals and any changes to the manuals e Update notes there is a warranty activation sheet with this product Send it in to automatically receive update notes containing important information about software and hardware changes Contact your local Trimble Dealer for more information about the support agreement contracts for software and firmware and an extended warranty program for hardware e ftp trimble com use the Trimble FTP site to send files
52. r GPS Pathfinder Systems Receiver Manual 7 1 Overview e Integrated L band satellite differential correction receiver e Integrated L1 GPS satellite differential antenna this active antenna filters out unwanted signals and amplifies the L1 GPS and satellite differential signals e User upgradeable receiver firmware e Receiver manual e CE Mark compliance Antenna Options There are three antenna options for the GPS Pathfinder Systems recelvers This antenna is used with this receiver See Integrated GPS MSK beacon GPS Pathfinder Pro XR page 9 antenna Combined L1 GPS beacon GPS Pathfinder Pro XRS page 10 satellite differential antenna Integrated L1 GPS satellite GPS Pathfinder Power page 11 differential antenna 8 GPS Pathfinder Systems Receiver Manual Overview 1 Integrated GPS MSK Beacon Antenna The GPS Pathfinder Pro XR receiver s integrated GPS MSK beacon antenna part number 29653 00 features two antenna components L1 GPS antenna This active antenna is designed to filter out unwanted signals and amplify the L1 GPS signal for transmission over the antenna cable to the receiver e MSK H field loop beacon antenna This antenna features a pre amplifier for filtering out signal interference such as AM radio broadcasts and noise from switching power supplies After filtering the pre amplifier amplifies the MF signal for transmission over the same antenna cable to the beacon receiver The co
53. s given in the sections below are obtained under the following conditions e Number of satellites used gt 5 e PDOP lt 6 e Signal to noise ratio gt 6 e Satellite elevation mask gt 15 e Reference station receiver 1s a Trimble GPS Pathfinder Pro XR Pro XRS 4600 LS or Series 4000 GPS receiver or equivalent Real Time DGPS When using real time DGPS the reference station broadcasts the correction values to the rovers within coverage range through a transmitter such as a radiobeacon beacon DGPS or a satellite satellite DGPS The rover applies the corrections to its position in real time With real time DGPS the data file collected at the rover includes the corrected DGPS position and the differential corrections Collecting the differential corrections enables you to postprocess the real time corrected positions later if required For more information see Postprocessed Real Time PPRT DGPS page 16 The positions calculated by the GPS Pathfinder Systems receivers using real time DGPS are of submeter accuracy 2 ppm If you use a provider of real time DGPS that uses VRS VBS techniques there is no degradation associated with distance from reference station and the accuracy always stays at the submeter level RMS GPS Pathfinder Systems Receiver Manual 15 2 Accuracy Postprocessed DGPS When real time DGPS is not available or 1s only available part of the time you have to postprocess the autonomous GPS dat
54. sure that the elevation mask is at least 5 higher than the reference station elevation GPS Pathfinder Systems Receiver Manual 19 2 Accuracy Occupation Period The GPS Pathfinder Systems receivers achieve the specified horizontal accuracy with a one second occupation time Note To achieve higher levels of accuracy using a GPS Pathfinder Systems receiver collect carrier phase data and postprocess using the GPS Pathfinder Office software Receiver Type The following Trimble receiver models use Maxwell technology and when used as the reference station yield submeter accuracy with GPS Pathfinder Systems receivers GPS Pathfinder Pro XRS GPS Pathfinder Pro XR GPS Pathfinder Pro XL 4700 4800 4600 LS Surveyor 4000 series DSM Reference Station N Warning If the GPS receiver at the reference station has fewer than 12 channels you may be unable to differentially correct some of your data If the reference station is not capable of logging data from all of the satellites the rover is using the data collected by the rover cannot be differentially corrected using postprocessing 20 GPS Pathfinder Systems Receiver Manual Accuracy 2 Accuracy of the Reference Station Position Any inaccuracy in the reference station position is reflected in your rover position accuracy For information on the accuracy of your local DGPS reference station coordinates contact the provider of that particular service Synchroniz
55. tellite differential antenna and a beacon antenna into a single antenna assembly as shown in Figure 1 2 The antenna assembly is completely weatherproof and is designed to withstand harsh environmental conditions Figure 1 2 Combined L1 GPS beacon satellite differential antenna for the GPS Pathfinder Pro XRS receiver GPS Pathfinder Systems Receiver Manual Overview 1 Integrated L1 GPS Satellite Differential Antenna The GPS Pathfinder Power receiver s integrated L1 GPS satellite differential antenna shares its housing with the GPS receiver The active antenna filters out unwanted signals and amplifies the L1 GPS and satellite differential signals The combined GPS receiver and integrated L1 GPS satellite differential antenna assembly part number 38198 50 1s shown in Figure 1 3 It is completely weatherproof and is designed to withstand harsh environmental conditions Figure 1 3 Integrated L1 GPS satellite differential antenna for the GPS Pathfinder Power receiver GPS Pathfinder Systems Receiver Manual 11 1 Overview 12 GPS Pathfinder Systems Receiver Manual CHAPTER Accuracy In this chapter m Introduction m Differential GPS positioning m Factors affecting postprocessed DGPS accuracy m Real time DGPS accuracy 2 14 Accuracy Introduction The GPS Pathfinder Systems receivers calculate very accurate GPS positions on a second by second basis After postprocessed differential correction the h
56. tems Receiver Manual Overview 1 Additional GPS Pathfinder Pro XRS Receiver Features The GPS Pathfinder Pro XRS GPS MSK beacon satelhte differential receiver offers the items previously listed and also Integrated L band satellite differential correction receiver Combined L1 GPS beacon satellite differential antenna Standard GPS Pathfinder Power Features The GPS Pathfinder Power receiver offers the following standard features Integrated 12 channel L1 GPS receiver antenna C A code tracking with carrier phase smoothing and full wavelength carrier phase measurements EVEREST multipath rejection technology Note If you have purchased part number 40888 85 ENG this option is not installed If you want to purchase the option upgrade for this functionality contact your local dealer Submeter MCORR400 accuracy assumes at least 5 satellites PDOP less than 6 and corrections from a Trimble Reference Station TRS 4000RS or Trimble Community Base Station with EVEREST multipath rejection technology 1 Hz position and velocity update Velocity computations incorporate carrier phase data Time to First Fix typically less than 30 seconds Two RS 232 serial ports NMEA 0183 output to external NMEA devices supported messages are ALM GGA GLL GSA GSV VTG and ZDA RTCM SC 104 input from an external differential correction receiver for example the Beacon on a Belt BoB receiver TSIP Protocol to from the data collecto
57. tion diagram GPS Pathfinder Systems Receiver Manual 49 4 Equipment Backpack An ergonomic backpack 1s included with each GPS Pathfinder Systems receiver Use this comfortable backpack to carry the receiver antenna batteries and data collector in the field Loading GPS Pathfinder Pro XR XRS Equipment into the Backpack Figure 4 14 illustrates the features inside the backpack Pro XR XRS antenna antenna cable antenna pole excess antenna cable battery pocket receiver battery Figure 4 14 GPS Pathfinder Pro XR XRS receiver in the backpack 50 GPS Pathfinder Systems Receiver Manual Equipment 4 To load the GPS equipment into the backpack open the backpack and follow these steps l 10 11 Place the GPS Pathfinder Pro XR XRS receiver in the center of the backpack between the battery pockets Position 1t with the back panel face up and clip the receiver in place with the retaining straps Attach the data power cable part number 3023 1 00 to receiver Port B Place two or four if needed fully charged batteries in the backpack One battery goes in each of the battery pockets with the connector clips facing up towards the front Clip the battery cable part number 24333 to two batteries and connect the 3 pin connector to the data power cable The other two batteries act as spares if required Screw the antenna pole s onto one of the antenna mounts The poles need to be high enough for
58. ts below 1 Strongly Agree 2 Agree 3 Neutral 4 Disagree 5 Strongly Disagree The manual is well organized l 2 3 4 5 I can find the information I want l 2 3 4 5 The information in the manual is accurate 1 2 3 4 5 I can easily understand the instructions 1 2 3 4 5 The manual contains enough examples 1 2 3 4 5 The examples are appropriate and helpful 1 2 3 4 5 The layout and format are attractive and useful 1 2 3 4 5 The illustrations are clear and helpful 1 2 3 4 5 The manual is too long just right too short Please answer the following questions Which sections do you use the most What do you like best about the manual What do you like least about the manual Optional Name Company Address Telephone Fax Mail to Trimble Navigation Limited 645 North Mary Avenue P O Box 3642 Sunnyvale CA 94088 3642 or fax to 1 408 481 8552 Please mark it Attention Technical Publications Group All comments and suggestions become the property of Trimble Navigation Limited
59. utputs the DGPS corrections to the GPS component in the industry standard RTCM SC 104 format The GPS component of the GPS Pathfinder Pro XR XRS receiver applies the DGPS corrections output from the MSK beacon component to achieve accurate position and velocity measurements Advanced DGPS System Components In addition to the three DGPS components listed in Real Time DGPS Beacon Components page 26 a DGPS service can have advanced components e Integrity monitor Control station Integrity Monitor An integrity monitor is a precisely located GPS receiver and MSK beacon receiver that applies differential corrections The differentially corrected position is compared to its known location to determine 1f the corrections broadcast from the reference station are within the preset tolerance Control Station Some DGPS services maintain centralized control sites to administer the DGPS service elements 28 GPS Pathfinder Systems Receiver Manual Real Time DGPS Components 3 MSK Beacon Receiver Signal Processing MSK signal processing is broken down into five stages e MSK pre filtering e MSK automatic gain control e MSK analog to digital conversion e MSK digital signal processing e MSK I O processing MSK Pre Filtering The MSK pre filter rejects additional interference in the MF signal that was not attenuated by the pre amplifier filter or was picked up by the antenna cable MSK Automatic Gain Control This stage automatica
60. vice To activate the OmniSTAR satellite differential service do the following 1 Prepare the GPS Pathfinder Pro XRS or Power receiver Connect the controlling software to the receiver and begin tracking GPS satellites with a clear view of the sky Follow the directions in the software s user documentation to obtain the OmniSTAR ID for the receiver Write the ID down 2 Call OmniSTAR and give them your location for example Sunnyvale California USA the OmniSTAR ID that you obtained from the controlling software OmniSTAR gives you the OmniSTAR satellite and frequency for your local area a 24 digit activation code Note For phone numbers and further details on how to access the Fugro OmniSTAR service refer to the OmniSTAR booklet that accompanies your GPS Pathfinder Systems receiver or visit the OmniSTAR website at www omnistar com 3 Follow the directions in the controlling software s user documentation to configure the receiver so that it is ready to receive corrections from your regional OmniSTAR satellite GPS Pathfinder Systems Receiver Manual 31 3 Real Time DGPS Components N Warning Make sure that you enter the 24 digit code correctly Typographic errors prevent successful activation 4 Wait up to 45 minutes for the activation process to complete Note If the activation process does not complete within 45 minutes call Fugro OmniSTAR and report your problem Note
61. wer Housing Figure 4 3 shows the GPS Pathfinder Power receiver mounted in its weatherproof housing Figure 4 3 GPS Pathfinder Power housing The GPS Pathfinder Power receiver has one physical port as shown in Figure 4 4 This port combines two RS 232 serial communications ports Port A and Port B one 1 PPS port and power input Figure 4 4 GPS Pathfinder Power port GPS Pathfinder Systems Receiver Manual 39 4 Equipment The port is a 12 pin male bulkhead connector e Port A is set by default to output NMEA 0183 messages and receive RICM SC 104 correction data The port can also be setup to communicate Trimble s format TSIP Trimble Standard Interface Protocol e Port B is set by default to input and output TSIP messages You do not need to connect an antenna cable to this receiver because the antenna and receiver are built into and connected within the same housing For pinout information for the port see Appendix B Specifications 40 GPS Pathfinder Systems Receiver Manual Equipment GPS Pathfinder Pro XR Cabling To use a GPS Pathfinder Pro XR receiver with a TSC1 data collector connect the system as shown in Figure 4 5 00 Y O 701 E ON Figure 4 5 P N 29653 00 P N 22628 P N 38073 11 P N 17466 P N 30232 00 P N 30231 00 P N 24333 P N 32287 00 P N 29673 50 GPS Pathfinder Pro XR receiver TSC1 connection diagram 65 Some
62. ystems Receiver Manual 55 4 Equipment 3 Position the hip belt so that the top of the belt is at the same height as the top of your hip bone 4 Tighten the hip belt until it is firmly around your hip 5 Tighten the shoulder pads by pulling down on the shoulder pad adjustment straps The straps should be firm but not cutting in under your arm 6 Adjust the height of your chest strap to be positioned just below your collarbones The chest strap helps to keep your backpack in the right place on your body and is also used to fine tune the shoulder straps to the most comfortable position Note The harness is designed to follow your movements rather than resist them However you may want to minimize the backpack movement when balance is critical for example when climbing in rocky areas To do this tighten the side stabilizer straps Caring for the Backpack To maintain the durability of the Trimble backpack and protect its waterproofing e Clean it regularly with a soft brush and warm water to remove dirt and other foreign material e Dry the backpack thoroughly before storing it to avoid the risk of mildew e Store it in a well ventilated dry area away from direct sunlight or heat N Warning Do not use soap detergents or other solvents These can attack and damage the fabrics Do not machine wash the backpack 56 GPS Pathfinder Systems Receiver Manual Equipment 4 Optional Range Poles and Tripods Ra

GPS Pathfinder® Systems Receiver Manual

Contents

Download Pdf Manuals

Related Search

Related Contents

GPS Pathfinder&reg; Systems Receiver Manual

Contents

Download Pdf Manuals

Related Search

Related Contents

GPS Pathfinder® Systems Receiver Manual