Topcon GB-500 Operator'S Manual Download Page 1

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GB-500

PRECISION GPS

Operator’s Manual

Summary of Contents for GB-500

Page 1: ...GB 500 PRECISION GPS Operator s Manual ...

Page 2: ......

Page 3: ...Operator s Manual Part Number 31 050506 01 Rev B Copyright Topcon Positioning Systems Inc May 2004 All contents in this manual are copyrighted by Topcon All rights reserved The information contained herein may not be used accessed copied stored displayed sold modified published or distributed or otherwise reproduced without express written consent from Topcon ...

Page 4: ...ECO 2231 ...

Page 5: ...i Manual Conventions ix Chapter 1 Introduction 1 1 GPS Surveying 1 2 Post Processing Surveying 1 3 Guidelines for Post Processing Surveying 1 3 Static Surveying 1 3 Rapid Static Surveying 1 4 Kinematic Surveying 1 5 Real Time Kinematic RTK Surveying 1 6 Getting Acquainted 1 7 GB 500 Receiver 1 9 Front Panel 1 11 PG A1 Antenna 1 11 Optional Accessories 1 12 Storage Precautions 1 12 Option Authoriza...

Page 6: ...ntenna on RTK Pole 2 12 Measuring Antenna Height 2 13 Antenna Offsets 2 14 Connecting the Antenna 2 16 Collecting Almanacs 2 17 Chapter 3 Operation and Data Management 3 1 Operating the GB 500 Receiver 3 1 Power Key 3 1 Hold Key and Hold LED 3 2 Status LED 3 2 Battery LEDs 3 2 REC Key and Record LED 3 3 Managing Data 3 7 Automatic Observation Data File 3 7 Downloading Observation Data Files 3 8 De...

Page 7: ...cking Adjusting the Plate Level A 3 Checking the Plate Level A 3 Adjusting the Plate Level A 4 Checking Adjusting the Circular Level A 5 Checking the Circular Level A 5 Adjusting the Circular Level A 5 Checking Adjusting the Optical Plummet Telescope A 6 Checking the Optical Plummet Telescope A 6 Adjusting the Optical Plummet Telescope A 6 Appendix B Handling and Safety Precautions B 1 General Han...

Page 8: ... Recharge Discharge Cycle Characteristics C 9 BC 29 Charger C 9 AC Adapter C 10 Appendix D NMEA Standards D 1 General NMEA Format D 1 Fields D 2 Supported Messages D 3 GGA Message D 3 GLL Message D 5 GNS Message D 6 GRS Message D 8 GSA Message D 9 GST Message D 10 GSV Message D 10 HDT Message D 11 RMC Message D 12 VTG Message D 13 ZDA Message D 14 Appendix E Warranty Terms E 1 ...

Page 9: ...s product is for professional use only The user is required to be a qualified surveyor or have a good knowledge of surveying in order to understand the user and safety instructions before operating inspecting or adjusting 2 Wear the required protectors safety shoes helmet etc when operating Exceptions from Responsibility 1 The user of this product is expected to follow all operating instructions a...

Page 10: ...ge except for explained in the user manual 6 The manufacturer or its representatives assumes no responsibility for damage caused by wrong movement or action due to connecting with other products Other Terms and Conditions COPYRIGHT All information contained in this Manual is the intellectual property of and copyrighted material of TPS All rights are reserved You may not use access copy store displ...

Page 11: ...Y OR FITNESS FOR ANY PARTICULAR USE OR PURPOSE TPS AND ITS DISTRIBUTORS SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING PERFORMANCE OR USE OF THIS MATERIAL OR THE RECEIVER SUCH DISCLAIMED DAMAGES INCLUDE BUT ARE NOT LIMITED TO LOSS OF TIME LOSS OR DESTRUCTION OF DATA LOSS OF PROFIT SAVINGS...

Page 12: ...d by authorized TPS warranty service centers Users should review and heed the safety warnings in Appendix B MISCELLANEOUS The above Terms and Conditions may be amended modified superseded or cancelled at any time by TPS The above Terms and Conditions will be governed by and construed in accordance with the laws of the State of California without reference to conflict of laws Regulatory Information...

Page 13: ...ective 89 336 EEC based on test results using harmonized standards in accordance with Article 10 1 of the Directive Manual Conventions This manual uses the following conventions Example Description ENT Press or click the button or key labeled ENT File Exit Click the File menu and click Exit Connection Indicates the name of a dialog box or screen Frequency Indicates a field on a dialog box or scree...

Page 14: ...on system performance measurements or personal safety CAUTION CAUTION Notification that an action has the potential to adversely affect system operation system performance data integrity personal health WARNING WARNING Notification that an action will result in system damage loss of data loss of warranty or personal injury ...

Page 15: ...improving the accuracy of your survey points and positions The dual frequency and GPS features of GB 500 combine to provide the only real time kinematic RTK system accurate for short and long baselines Several other features including multipath mitigation and co op tracking provide under canopy and low signal strength reception The receiver provides the functionality accuracy availability and inte...

Page 16: ...0 performs Table 1 1 Observation Methods with the GB 500 Surveying Method Appropriate Situations Static surveying When the baseline calculated is long and or the environment is severe in terms of severe multipath dense tree canopy etc Rapid static surveying When the baseline is several kilometers long and survey conditions are average in terms of multipath residual ionosphere number of satellites ...

Page 17: ...ic surveying Remember that the method of observation observation time etc differ for each surveying method Guidelines for Post Processing Surveying While conducting a survey for post processing remember to follow these guidelines Base and rover receivers must collect raw data simultaneously Base and rover receivers must collect data during the same recording interval Static Surveying Static survey...

Page 18: ...taneous observation by at least two receivers To increase the efficiency of the work survey multiple observation points using multiple receivers to conduct the survey With post processing software you can simultaneously analyze and process the observation data obtained using multiple receivers Compared to the other surveying methods static surveying requires a longer observation time By the same t...

Page 19: ...uct thorough preparations for the observation Kinematic Surveying With kinematic surveying the reference station conducts static surveying just as with the static surveying method however the rover station observes while moving There are two types of kinematic surveying Stop Go and Continuous Like static surveying kinematic surveying requires that at least two receivers receive signals simultaneou...

Page 20: ...atic surveying is a non stop surveying method used for obtaining the consecutive precise trajectory of a moving body etc With this method results are obtained for each recording interval Real Time Kinematic RTK Surveying Real time kinematic RTK surveying is a method that returns positioning results obtained in real time and requires a controller to download and save the results With RTK surveying ...

Page 21: ...ive satellites and can last several minutes in less than ideal environments that is severe multipath dense tree canopy etc Getting Acquainted The GB 500 is a receiver that has been configured for surveying Depending on the firmware options it can be upgraded for dual frequency and GPS GLONASS reception A graphic LED display and operating keys enable any user to easily operate it conduct various ki...

Page 22: ... Personal Computer Battery Charger BC 29 Li ion Battery Pack BT 60Q 2 Pieces GB 500 AC Adapter HiPer Tribrach Model 2 Rotating Tribrach Adapter Height Adapter Prism Adapter Model 3 5 8 inch L Plug PG A1 Antenna Cable Modem Cable Interface Cable P 13 I F Cable Radio Modem FC 1000 USB Cable ...

Page 23: ...ONASS satellites RTK Enables RTK processing for the measuring interval select either 1 Hz 5 Hz 10 Hz or 20 Hz AMR Advanced Multipath Rejection Reduces multipath errors Memory Enables the use of the internal memory from 8 MB to 1 GB The GB 500 receiver has a front panel for displaying information and controlling various receiver functions The lever provides access to the battery compartment Figure ...

Page 24: ...s The top of the receiver has ports for the antenna power connection and connection to external components The USB port is located on the right side of the receiver A hook on the back side allows the receiver to be attached to a tripod Figure 1 5 Figure 1 5 GB 500 Ports and Connectors Holes for Strap BT 60Q Battery Battery Cover R E C 1 2 Connectors USB Port B C RS232 Serial Ports External Power P...

Page 25: ...GB 500 Front Panel PG A1 Antenna The PG A1 antenna Figure 1 7 is a precision dual frequency dual constellation antenna featuring precision micro center technology and an integrated ground plane to help eliminate errors caused by multipath The PG A1 was designed to accompany Topcon modular receivers such as the GB 500 Figure 1 7 PG A1 Antenna Battery 1 LED Left side Power Key Hold Key Recording Key...

Page 26: ... to connect the antenna and receiver Data cable Used to connect the GB 500 to a computer DB 9 pin connector Cigarette lighter cable Used to connect to the cigarette lighter in an automobile and power the receiver via the power cable Cable with clip connectors alligator clips Used to connect a general purpose battery and power the receiver via the power cable Storage Precautions 1 Always clean the ...

Page 27: ...eceivers ship with a temporary OAF that allows the receiver to be used for a predetermined period of time When the receiver is purchased a new OAF activates desired purchased options permanently Receiver options remain intact when clearing the NVRAM or resetting the receiver The OAF enables the following kinds of functions For a complete list of available options and details visit the TPS website ...

Page 28: ...Introduction Topcon GB 500 Operator s Manual 1 14 Notes ...

Page 29: ...using the AC adaptor the batteries can be recharged while still in the GB 500 Using the BT 60Q Batteries NOTICE NOTICE Before shipping the factory attaches an insulated sheet to the battery contacts Remove this sheet before use A slight current flows inside the GB 500 even when power is off Therefore if storing the GB 500 for a long time with the batteries installed the batteries will run down and...

Page 30: ...will be used first The status icons display the battery currently in use and its remaining capacity Charging the BT 60Q Batteries When charging the BT 60Q batteries remember the following precautions Charge the batteries at a room temperature of 10 C to 40 C 50 F to 104 F To maintain the life of the batteries observe the specified charging time to the extent possible The batteries discharge even w...

Page 31: ...te Charging batteries in quick succession could cause the battery and or the charger to deteriorate Let the charger rest for 30 minutes between chargings 1 Place a BT 60Q battery in the BC 29 charger as see in Figure 2 2 2 Plug the charger s power cord into a socket Charging will commence and will last about 3 hours Figure 2 2 BT 60Q Battery in Charger The LED indicator on the charger indicates th...

Page 32: ...e 2 3 Figure 2 3 Charging the GB 500 with the AC Adapter The receiver s charging status varies depending on the state of the batteries and power switch Both battery LEDs use the same blink pattern while the corresponding battery charges While charging the battery LED for the charging battery blinks in one second intervals Solid green light battery charging is complete Green blink battery charge is...

Page 33: ... When charging completes power automatically switches off Battery Charging Order and Precautions When both batteries are installed the GB 500 will begin charging the battery with the least remaining capacity When completely charged the receiver begins charging the other battery When powering the GB 500 from a car battery the car battery may not supply sufficient voltage charge the batteries To ens...

Page 34: ...on GB 500 Operator s Manual 2 6 Connecting the USB Cable Connect the USB cable to the GB 500 s USB port Figure 2 4 Figure 2 4 Connecting the USB Cable NOTICE NOTICE The USB port is not waterproof with an attached cable R E C 1 2 ...

Page 35: ...A FC 1000 controller Port B Computer Port C Modem Above each port is a colored mark yellow for port A green for port B and white for port C The red mark indicates the power port Figure 2 5 Connecting Serial Cables TIP TIP Attach colored stickers to the cables that correspond to the colored mark above the receiver s serial ports The GB 500 s rubber caps function to maintain water proofing and are a...

Page 36: ...he following steps 1 Thread the strap through the strap holes 2 Fold one end of the strap onto the velcro tape in the middle of the cover 3 Fold the other end of the strap onto the velcro tape on the first end 4 Firmly press the pieces of velcro tape together and snap the cover shut Figure 2 6 Attaching the Strap NOTICE NOTICE If the belt is not securely attached the GB 500 could fall and become d...

Page 37: ...the antenna on a tripod use the base Tribrach adaptor 2 30 and horizontal spacer as described below Antenna on Tripod For the tripod Figure 2 8 on page 2 10 use the TOPCON Precision Wood Tripod or an expandable metal tripod 1 Place the Tribrach 20 on the tripod and tighten the tripod screw securing the tribrach in place 2 Place the Tribrach adaptor 2 30 on the tribrach and tighten the bases lockin...

Page 38: ...Setup and Connections Topcon GB 500 Operator s Manual 2 10 Figure 2 8 Antenna Setup on Tripod Antenna 5 8 inch L Plug Prism Adapter Model 3 Tribrach Model 2 Triibrach screw ...

Page 39: ...the plate level parallel with the line connecting leveling screws A and B Turn leveling screws A and B to bring the bubble to the center of the plate level Rotate the instrument 90 100g around its vertical axis and turn leveling screw C to center the bubble once more Repeat step 4 for each 90 100g rotation of the instrument and check that the bubble correctly centers at all four points 5 Center Us...

Page 40: ...ole For the RTK pole Figure 2 9 be sure to use one that is lightweight and mobile 1 Screw the PG A1 antenna onto the RTK pole s 5 8 inch screw 2 Release the lock adjust the pole s length and fasten the lock again Figure 2 9 Antenna Setup on RTK Pole Lock Antenna 5 8 inch screw ...

Page 41: ...vertical height between the observation point marker and the antenna reference point ARP or the slant height between the observation point marker and the antenna height measuring position Figure 2 10 For the rover antenna measure the vertical height between the tip of the RTK pole and the ARP Figure 2 10 Measure Antenna Height The actual point surveyed by the antenna is at the electrical phase cen...

Page 42: ...antenna height measuring position is the lower part of metal brim The following are antenna constants for the PG A1 Electrical phase center from antenna reference point ARP a L1 54 3mm a L2 60 5mm Electrical phase center from antenna height measuring position b L1 26 8mm b L2 33mm Antenna height measuring position from antenna reference point ARP c 27 5mm Distance between antenna center and measur...

Page 43: ...Antenna Setup P N 31 050506 01 www topconpositioning com 2 15 Figure 2 11 Measure Antenna Offset Lower Edge of Metal Brim ARP ...

Page 44: ...e to connect the GB 500 and antenna 1 Connect the cable to the GB 500 s antenna port Figure 2 12 2 Connect the cable to the PG A1 s antenna port Figure 2 12 Once connected use the tripod hook on the back of the receiver to attach it securely to the tripod Figure 2 12 Connect GB 500 and Antenna RE C 1 2 ...

Page 45: ...ill need to collect or update the almanac If the receiver has been off for a long time If the last known receiver position stored in the NVRAM is different from the present position by several hundred kilometers After loading a new OAF After loading new firmware After clearing the NVRAM Before surveying 1 Set up the receiver in a location with a clear view of the sky 2 Turn on the receiver 3 Wait ...

Page 46: ...Setup and Connections Topcon GB 500 Operator s Manuall 2 18 Notes ...

Page 47: ...e various configuration parameters Operating the GB 500 Receiver The GB 500 receiver s front panel uses keys to perform various functions and LEDs to display various information Figure 3 1 Figure 3 1 GB 500 Front Panel Power Key Pressing the power key turns the receiver on and off Battery 1 LED Left side Power Key Hold Key Recording Key Battery 2 LED Right side Recording LED Status LED Hold LED ...

Page 48: ...e for GLONASS Battery LEDs The color of the battery LEDs display the status of the remaining charge for the corresponding battery and is the same for both LEDs Green 60 to 100 remaining battery capacity Yellow 20 to 60 remaining battery capacity Red 2 to 20 remaining battery capacity No light less than 2 remaining battery capacity or no battery installed The blink interval and length of time lit o...

Page 49: ...r between static and dynamic post processing modes depending on the receiver s configuration During the first second of pressing the REC key the REC LED is orange Pressing the REC key for more than one and less than five seconds will start stop data recording During data recording the REC LED is green If the REC LED is red the receiver has run out of memory has a hardware problem or contains an im...

Page 50: ... is red during the next three seconds Pressing the REC key for more than eight seconds has no impact After loading new firmware or clearing the receiver s NVRAM the receiver checks its internal file system During this operation the REC LED flashes orange and the file system is not accessible for CDU control display unit applications or for data recording This operation may require from fractions o...

Page 51: ...or 1 second If REC key mode is LED blink mode switch Orange Release to change information mode If REC key mode is Occupation mode switch Orange No function Pressed for 1 5 seconds If REC key mode is LED blink mode switch Green Release to start data recording post processing occupation mode undefined If REC key mode is Occupation mode switch Green Release to start recording Kinematic or Static post...

Page 52: ... occupation mode Orange Data recording started Static post processing occupation mode Pressed for 1 second If REC key mode is LED blink mode switch Orange Release to change information mode If REC key mode is Occupation mode switch Orange Release to toggle between Static and Kinematic post processing modes Pressed for 1 5 seconds No light Release to stop data recording Pressed for 5 8 seconds Red ...

Page 53: ... name unless otherwise specified by the controller or computer and create a session file File names are based on the observation date using the following format XXXXMMDDS XXXX A specified character string 20 characters max the default is log MM the month of the observation January 01 December 12 DD the day of the observation 1st day 01 31st day 31 S the session number a to z NOTICE NOTICE This fil...

Page 54: ... from the receiver to a computer If using the USB port a dedicated USB driver is required If needed download the required USB driver from the TPS website www topcongps com For further details on downloading and installing the USB driver refer to the user s manual for the software 1 Connect the receiver and computer Figure 3 2 USB cable connected to the USB port on the receiver then to the USB port...

Page 55: ...r status as Disconnected 3 Click File Connect Figure 3 4 Figure 3 4 Click File Connect 4 On the Connection Parameters dialog box select the following parameters and click Connect for RS232 connections Figure 3 5 on page 3 10 Set the Connection mode Direct Set the port for your computer typically COM1 COM2 for RS232 connection from the Port drop down list Set the communication rate between the rece...

Page 56: ... 3 10 Figure 3 5 RS232 Connection Parameters for USB connections Figure 3 6 Set the Connection mode Direct Set the port for your computer USB from the Port drop down list Select the receiver s ID from the Rec ID drop down list Figure 3 6 USB Connection Parameters ...

Page 57: ... communications settings such as port name baud rate if applicable and flow control if applicable display in the lower left corner of the main window of PC CDU A timer begins to count up in the lower right corner as well Figure 3 7 Figure 3 7 PC CDU Connection Established 5 Click File File Manager Figure 3 8 Figure 3 8 File File Manager ...

Page 58: ...h to download and store files Or type a new folder name and click Create to create a new folder in which to download and store files Open this new folder 8 Select the Download files tab and select the file s to download Figure 3 10 on page 3 13 To select multiple files hold down the Shift key and click on non sequential files to select several files at once or hold down the Ctrl key and click on i...

Page 59: ...les 9 Click the Download button During the download status indicators display next to each file Figure 3 11 Blue indicator file in queue for downloading Red indicator file currently downloading Green indicator file has successfully downloaded Figure 3 11 Download Files Status Indicators ...

Page 60: ...d such as PC CDU or Topcon Link The following procedure describes using PC CDU to delete files from the receiver 1 Follow step 1 on page 3 8 to step 5 page 3 11 2 On the Download files tab or Current log files tab select the file s you want to delete Figure 3 13 on page 3 15 To select multiple files hold down the Shift key and click on non sequential files to select several files at once or hold d...

Page 61: ...a P N 31 050506 01 www topconpositioning com 3 15 Figure 3 13 Delete Files 6 Continue with other operations or click File Disconnect then File Exit to quit PC CDU Figure 3 14 Figure 3 14 Click Disconnect then Exit ...

Page 62: ... Click File Connect select the desired connection parameters and click Connect 2 Click Tools Receiver Options Figure 3 15 Figure 3 15 Tools Receiver Options The Option Manager screen displays Figure 3 16 on page 3 17 and contains the following information Option name a name description of the option Current the current status of the option Purchased if the option is purchased or not Leased if the ...

Page 63: ...eiver option is disabled positive integer the option is enabled yes or no the option is either enabled or disabled 3 When finished click Exit on the Option Manager screen then click File Disconnect to prevent conflicts with serial port management Figure 3 16 Option Manager ...

Page 64: ...in Checking Options on page 3 16 2 Click Load at the bottom of the Option Manager screen see Figure 3 16 on page 3 17 3 Navigate to the location of the new Option Authorized File OAFs have jpo or tpo extensions and are unique to each receiver Figure 3 17 Figure 3 17 Load OAF 4 Select the appropriate file and click Open Figure 3 17 The new receiver option loads onto the receiver and the Option Mana...

Page 65: ...omputer Clearing the NVRAM of your receiver will not delete any files already recorded in your receiver s memory However it will reset your receiver settings to factory default values After clearing the NVRAM your receiver will require some time to collect new ephemerides and almanacs around 15 minutes Note that after clearing the NVRAM the receiver s STAT LED will flash orange for a few seconds i...

Page 66: ...d red the STAT LED flashes red Figure 3 18 Tools Clear NVRAM The receiver automatically disconnects from PC CDU once the NVRAM is cleared Checking Firmware Version You can use PC CDU to check the firmware version of your receiver NOTICE NOTICE The receiver should be loaded with firmware version 2 3 or later CAUTION CAUTION Do not use firmware versions 2 2p3 or older 1 Connect the receiver and comp...

Page 67: ...igure 3 20 About PC CDU GB 500 About PC CDU lists important information about the different hardware accessories and software properties This list includes the following which you will need if you contact TPS or your dealer Receiver model Receiver ID Firmware version 3 When finished click OK then click File Disconnect to prevent conflicts with serial port management ...

Page 68: ...ver board RAM file main ldp the Receiver board Flash file NOTICE NOTICE You must load both files when loading new firmware These files must come from the same firmware package The receiver uses FLoader a Windows based utility to load firmware onto the receiver and power boards You can download FLoader to your computer from the TPS website For more information refer to the FLoader User s Manual als...

Page 69: ...On the Connection tab select the COM port on your computer that connects with your receiver and select its speed usually 115200 Figure 3 21 4 Click the Device tab and set the Device Type as Receiver Figure 3 22 Figure 3 22 Get Device Type 5 Click Get from Device for device information Figure 3 22 ...

Page 70: ... an incorrect RAM or Flash file an error message displays at the bottom of the dialog box Reselect the correct file 9 Click File Exit 10 Clear the receiver s NVRAM see Clearing the NVRAM on page 3 19 and update the almanac see Collecting Almanacs on page 2 17 after loading new firmware Note on COCOM Restriction The GB 500 will stop the calculation of any position and speed as well as the output an...

Page 71: ...irst Before contacting TPS Customer support about any problems with the receiver try the following First check all external receiver connections carefully to ensure correct and secure connections Second double check for worn or defective cables Next see the sections below for more specific solutions If the problem persists try the following Reset the receiver using PC CDU Tools Reset receiver Rest...

Page 72: ...ct a fully charged external power source and retry See Connecting and Charging the Batteries on page 2 1 The receiver has an external power source but internal batteries are discharged Charge the batteries overnight See Connecting and Charging the Batteries on page 2 1 The receiver may have a defective charger or defective internal batteries If after charging your internal batteries and your recei...

Page 73: ...ting the Serial Cables on page 2 7 and Port Configurations on page C 4 for information on the receiver s connectors The cable is damaged Use an undamaged cable Contact your Dealer to replace the cable The receiver port used for connection is not in Command mode 1 Connect your receiver and a computer using a free port see Connecting the Serial Cables on page 2 7 and start the configuration software...

Page 74: ...of obstructions if applicable Problem The receiver cannot obtain Code Differential and or RTK solutions Causes Solutions Incorrect Base coordinates entered Specify the correct coordinates for the Base station using suitable field data collection software The receiver is not configured as a Base or Rover Ensure the receiver has the proper configuration for it s function that is as a Base or Rover r...

Page 75: ... elevation mask The receiver and the antenna have a poor connection Ensure the cable is undamaged Check the cable connector attachment to the receiver Remove and reattach the cable connector to ensure a secure connection The Base and Rover modems are set to different radio channels Set the Base and Rover receivers to the same radio channel A discrepancy exists between the differential standards us...

Page 76: ...Delete unnecessary files see Deleting Files from the Receiver on page 3 14 Problem One or both Battery LEDs rapidly blink red Causes Solutions The batteries have a charging error Check that the batteries are properly installed Check that the AC adapter is undamaged If the error continues contact TPS customer support Problem One or both Battery LEDs do not light up Causes Solutions No battery is in...

Page 77: ...1 If in doubt about which e mail address to use for your particular question e mail the support group support topcon com Website The Topcon Positioning Systems website provides current information about Topcon s line of products The support area of the website provides access to frequently asked questions configuration procedures manuals e mail support etc To access the TPS website home page use w...

Page 78: ...Troubleshooting Topcon GB 500 Operator s Manual 4 8 Notes ...

Page 79: ...eliminated 2 Carry out the adjustments in the order of indicated as the adjustments are dependent one upon each other Adjustments carried out in the wrong sequence may nullify previous adjustment 3 Always conclude adjustments by tightening the adjustment screws securely but do not tighten them more than necessary to prevent striping the threads twisting off the screw or placing undue stress on the...

Page 80: ...ns Adjusting the Base To eliminate slack between the leveling screws and the base Figure A 1 1 Loosen the set screw of the holding ring 2 Tighten the holding ring with the adjusting pin until it is properly adjusted 3 Re tighten the set screw upon completing the adjustment Figure A 1 Base Components Adjusting Screws Holding Ring Set Screw Leveling Screw Leveling Screw ...

Page 81: ...ne running through the center of two leveling screws for example leveling screws A and B Figure A 2 2 Use only these two leveling screws to place the bubble in the center of the plate level 3 Rotate the instrument 180 or 200g around the vertical axis and check bubble movement of the plate level Figure A 2 If the bubble has been displaced then adjust the plate level as seen in Adjusting the Plate L...

Page 82: ...corrects only half of the displacement Figure A 3 2 Correct the remaining half of the bubble displacement with the leveling screws as described above 3 Rotate the instrument 180 or 200g around the vertical axis once more and check bubble movement Figure A 2 on page A 3 If the bubble is still displaced then repeat the adjustment Figure A 3 Adjusting the Plate Level Level adjustment capstan screw Ha...

Page 83: ... plate level If the bubble of the circular level is centered properly adjustment is not required Figure A 4 Otherwise proceed with the following adjustment Figure A 4 Checking the Circular Level Adjusting the Circular Level Using the accessory pin to adjust the three capstan adjustment screws located on the bottom surface of the circular level shift the bubble to the center of the circular level F...

Page 84: ...or 200g around the vertical axis and check the center mark If the point is properly centered in the center mark adjustment is not required Otherwise adjust in the following manner Adjusting the Optical Plummet Telescope 1 Take off the adjustment section cover of the optical plummet telescope eyepiece This will expose four capstan adjustment screws which should be adjusted with the accessory adjust...

Page 85: ...more and check the center mark Figure A 2 on page A 3 If it aligns to the point further adjustment is not required Otherwise repeat the adjustment TIP TIP First loosen the capstan adjustment screw on the side to which the center mark must be moved Then tighten the adjustment screw on the opposite side by an equal amount leaving the tension of the adjustment screws unchanged Revolve counter clockwi...

Page 86: ...Base Checks Adjustments Topcon GB 500 Operator s Manual A 8 Notes ...

Page 87: ...lass IP66 The GB 500 can withstand ordinary rain etc However its water resistance cannot be guaranteed if submerged Mounting the instrument on a Tripod When mounting the GB 500 on a tripod use a wooden tripod whenever possible A metal tripod can produce vibrations that affect the precision of measurement Also be sure to firmly tighten all tripod screws Installing the tribrach Any looseness in the ...

Page 88: ...ight current Depending on the conditions of use the backup battery will normally last for about 10 years from the time of manufacture If battery capacity should be depleted the GB 500 will be unable to retain its settings almanac information etc If settings return to the default settings when power is turned on or if at the start of satellite reception satellite tracking and positioning are always...

Page 89: ... the external controller computer Safety Cautions WARNING WARNING A risk of fire electric shock or physical harm exists if you attempt to disassemble or repair the instrument yourself This is only to be carried out by TOPCON or an authorized dealer WARNING WARNING High temperature may cause fire Do not cover the charger while it is charging WARNING WARNING Risk of fire or electric shock Do not use...

Page 90: ...or injury Do not dispose in fire or heat WARNING WARNING Battery can cause outbreak of fire Do not use any charger other than the one specified WARNING WARNING Risk of fire Do not use any power cable other than the one specified WARNING WARNING A short circuiting battery can cause a fire Do not short circuit the battery when storing it CAUTION CAUTION Do not connect or disconnect equipment with we...

Page 91: ...N Risk of injury or damage from falling instrument or case Do not use a carrying case with damaged belts grips or latches CAUTION CAUTION Do not allow skin or clothing to come into contact with acid from the batteries If this does occur wash off with copious amounts of water and seek medical advice CAUTION CAUTION A plumb bob can cause injury to a person if used incorrectly CAUTION CAUTION Ensure ...

Page 92: ...or s Manual B 6 CAUTION CAUTION A falling instrument can be dangerous check that you fix the instrument to the tripod correctly CAUTION CAUTION A falling tripod and instrument can cause injury Always check that the screws of tripod are securely tightened ...

Page 93: ...user keys and cable connectors Receiver Specifications Table C 1 lists receiver component details Table C 1 Receiver Specifications Component Details Channel Number of channels 40 L1 20 L1 L2 Receiving frequency Normal model GPS L1 L1 C A code Dual Frequency option model GPS L1 L2 L1 L2 C A P code Dual Frequency GLONASS model GPS GLONASS L1 L2 L1 L2 C A P code ...

Page 94: ...0ppm x baseline length V 20mm 2 5ppm x baseline length Physical Dimensions W 150 x H 257 x D 63mm Weight 1 0Kg without batteries 1 2Kg with batteries Protection against water and dust IP66 based on IEC60529 Battery Two internal LEDs 5 LEDs indicating hold status recording status and battery status Keys 3 keys for turning the receiver on off enabling disabling hold and starting stopping data record...

Page 95: ...g two BT 60Q batteries Input voltage DC6 to 28V when charging DC9 to 28V Formats DGPS recording format RTCM 2 3 1 2 3 9 16 31 32 34 36 RTK data format RTCM 2 3 3 16 18 19 20 21 22 36 CMR2 CMR NMEA output format NMEA 2 3 GGA GLL GNS GBS GSA GST GSV HDT RMC VTG ZDA Communication Baud rate 460 800 230 400 153 600 115 200 57 600 38 400 19 200 9 600 4 800 2 400 1 200 600 300 Default 115 200 Data bit 7 ...

Page 96: ...r ports A B and C The RS 232 connectors Figure C 1 are sealed receptacle 7 pin ODU ports Figure C 1 RS 232 Serial Port Ports A B and C Table C 2 gives the RS232 cable connector specifications for Port A Table C 2 RS232 Connector Specifications for Port A Number Signal Name Dir Details 1 Power_OUT P Power Output Supplied Voltage 2 GND I O Signal ground 3 CTS I Clear to send 4 RTS O Request to send ...

Page 97: ...ations for Port B Number Signal Name Dir Details 1 Power_OUT P Power Output Supplied Voltage 2 GND I O Signal ground 3 CTS I Clear to send 4 RTS O Request to send 5 RXD I Receive data 6 TXD O Transmit data 7 EVENT I Event marker input Table C 4 RS232 Connector Specifications for Port C Number Signal Name Dir Details 1 Power_OUT P Power Output Supplied Voltage 2 GND I O Signal ground 3 CTS I Clear ...

Page 98: ...ck the pin assignment on that unit The power connector Figure C 2 is a sealed receptacle 5 pin ODU port Figure C 2 External Power Port Table C 5 gives the external power connector specifications Table C 5 External Power Connector Specifications Number Signal Name Dir Details 1 Power_INP P Power input 2 Power_INP P Power input 3 Power_GND P Power ground 4 Power_GND P Power ground 5 Not used ...

Page 99: ... for precise geodetic use Table C 7 lists antenna component details Table C 6 USB Port Specifications Number Signal Name Dir Details 1 USB_PWR P Bus power input 2 USB D I O Data minus 3 USB D I O Data plus 4 GND GND Ground Table C 7 Antenna Specifications Component Details Type Micro strip GPS GLONASS Micro Center antenna Connector 50ohm TNC Ground plane Optional extended external ground plane Dim...

Page 100: ...d of use The following sections describe electric discharge storage and recharging cycle which are related to the battery life Weight 492g Protection against water and dust IP66 Based on IEC60529 Operating temperature 40 C to 55 C Input voltage DC 2 7 to 12V Table C 8 Battery Specifications Component Details Type Lithium ion Rated voltage DC7 4V Capacity 2000mAh Charging time Approx 3 hours Dimens...

Page 101: ...erioration characteristics of the battery accelerate as the storage temperature increases The battery should be stored below room temperature The battery will deteriorate faster when stored in a fully recharged state For long term storage lower the remaining capacity charge of the battery Recharge Discharge Cycle Characteristics Repeated recharging discharging cycles will cause the battery to dete...

Page 102: ...10 Adapter Specifications Component Details Size W 60 x L 112 x H 36 mm Weight 235 g Operating Temperature 0 C to 40 C Storage Temperature 40 C to 85 C Input AC 100 to 240 V 1A 110 V AC 50 to 60 Hz Output DC 12 V 2 5 A 30 W Connectors Input AC Standard 3 pins AC receptacle Output DC SAE Battery charge time 7 hours for Full Charge 6 hours for 90 Charge Table C 9 Charger Specifications Continued Com...

Page 103: ...sed in many applications General NMEA Format Each NMEA message has the following format AACCC c c hh CR LF Start of the message AACCC Address field The first 2 characters are the identifier of transmitting terminal The last 3 characters are the identifier of the message type c c Data block Checksum separator hh Checksum CR LF End of message carriage return line feed For each NMEA message a NULL fi...

Page 104: ...A messages however there are some messages that do not show the satellite used for positioning For further details see Supported Messages on page D 3 Fields Latitude and Longitude The latitude is shown as DDMM MMMM and the longitude as DDDMM MMMM DD and DDD represent a degree and MM MMMM is an arcminute with a decimal point Direction The characters representing the north latitude south latitude ea...

Page 105: ...er GST Statistics of position errors GSV Number of satellites satellite number elevation angle azimuthal angle and SNR HDT Heading RMC Positioning time date position course and speed VTG Course and speed ZDA UTC day month year and local time zone Table D 2 GGA Message Ouputs Field Description 1 UTC time of position fix first two digits designate hours the next two designate minutes and the remaini...

Page 106: ...0 Fix not available or invalid 1 GPS SPS Mode single point mode fix valid 2 Differential GPS SPS Mode fix valid 3 GPS PPS Mode single point mode fix valid 4 RTK Fix solution 5 RTK Float solution 6 Estimated dead reckoning mode 7 Manual input mode 8 Simulator mode 7 Number of satellites used for position computation 8 Horizontal dilution of precision HDOP 9 Altitude above geoid in selected datum me...

Page 107: ... Longitude in selected datum first three digits designate degrees and the remaining digits designate minutes of arc 4 Longitude hemisphere E eastern W western 5 UTC time of position first two digits designate hours the next two digits designate minutes and the remaining digits designate seconds 6 Status field V Invalid for all values of positioning system mode indicator A Autonomous D Differential...

Page 108: ...able length valid character field type with the first two characters currently defined The first character indicates the use of GPS satellites the second character indicates the use of GLONASS satellites The indicators are N No fix Satellite system not used in position fix or fix not valid A Autonomous Satellite system used in non differential mode in position fix D Differential Satellite system u...

Page 109: ...t for each positioning result The first one of three serial GNS messages outputs the majority of information and plays the most important role The other two messages output the respective information on GPS and GLONASS in particular the number of satellites the age of differential data and reference station ID Shown below is an example of three serial GNS messages GNGNS 122310 20 3722 425671 N 122...

Page 110: ...tance for GNSS Table D 5 GRS Message Ouputs Field Description 1 UTC time the first two digits designate hours the next two digits designate minutes and the remaining digits designate seconds 2 Mode 0 residuals were used to calculate the position given in the matching GGA or GNS sentence 1 residuals were recomputed after the GGA or GNS position was computed Currently the receiver uses only the firs...

Page 111: ... uses the same transmission identifier GN and has the same DOP value DOP is a value calculated using a series of linked satellites Table D 6 GSA Message Ouputs Field Description 1 Switching mode M Manual forced switching of 2D 3D mode A Auto automatic switching of 2D 3D mode 2 Positioning mode 1 Positioning is invalid 2 2D 3 3D 3 A sequence of satellite ID numbers Sequence length is variable depen...

Page 112: ...iation of the range input s error SV Range input which is used in the navigation process includes this satellite s pseudo range and the corresponding DGNSS correction meters 3 Semi major axis of error ellipse meters 4 Semi minor axis of error ellipse meters 5 Orientation of semi major axis of error ellipse degrees from true north 6 RMS latitude error meters 7 RMS longitude error meters 8 RMS altit...

Page 113: ...that of the GLONASS is GL The number of satellites may exceed 12 However the NMEA standard specifies that only three messages are permitted for one epoch and that data on 12 satellites maximum can be output If the number of satellites exceeds 12 some satellites may not be included in the epochs for which the GSV message has been given Examples of 1 epoch with the GSV message are shown below GPGSV ...

Page 114: ...d the remaining digits designates minutes of arc 4 Latitude hemisphere N northern S southern 5 Longitude in selected datum first three digits designate degrees and the remaining digits designate minutes of arc 6 Longitude hemisphere E eastern W western 7 Speed over ground horizontal speed knots 8 Course over ground true course degrees 9 Date day month year 10 Magnetic variation degrees 11 Magnetic...

Page 115: ...ees 4 Symbol M indicates Magnetic course 5 Horizontal speed knots 6 Symbol N indicates that horizontal speed is given in knots 7 Horizontal speed km h 8 Symbol K indicates that horizontal speed is given in km h 9 Positioning system mode indicator A Autonomous Satellite system used in non differential mode in position fix D Differential Satellite system used in differential mode in position fix E E...

Page 116: ...ur and minute refers to the difference from UTC Table D 12 ZDA Message Ouputs Field Description 1 UTC time first two digits designate hours next two digits designate minutes and the remaining digits designate seconds 2 Day varies between 01 to 31 3 Month varies between 01 to 12 4 Year 5 Local zone hours varies from 13 to 13 6 Local zone minutes varies from 00 to 59 7 Checksum ...

Page 117: ...lude service to repair damage to the product resulting from an accident disaster misuses abuse or modification of the product Warranty service may be obtained from an authorized TPS warranty service dealer If this product is delivered by mail purchaser agrees to insure the product or assume the risk of loss or damage in transit to prepay shipping charges to the warranty service location and to use...

Page 118: ...Warranty Terms Topcon GB 500 Operator s Manual E 2 Notes ...

Page 119: ......

Page 120: ...sitioning Systems Inc Phone 925 460 1300 Fax 925 460 1315 2004 Topcon Corporation All Rights Reserved No unauthorized duplication Printed in U S A GB 500 Operator s Manual P N 31 050506 01 Rev A 03 04 50 TOPCON ...

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