'2 /PERATORlS -ANUAL
P O S I T I O N I N G S Y S T E M S GR-3 Operator’s Manual Part Number 7010-0736 Rev A ©Copyright Topcon Positioning Systems, Inc. June, 2006 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. Topcon only sells GPS products into Precision Markets. Please go to www.topcongps.
ECO#2808
TOC Table of Contents Preface .................................................................. v Terms and Conditions ...................................................... v Manual Conventions ........................................................ viii Chapter 1 Introduction .......................................................... 1-1 Principles of Operation .................................................... GNSS Overview ........................................................
Table of Contents Installing FLoader ...................................................... Installing the Optional SD and SIM Cards ....................... Charging the Batteries ...................................................... Power Management .......................................................... Powering the Receiver ..................................................... Using the Detachable Batteries .................................. Using an Auxiliary Power Source ..........................
Table of Contents Chapter 5 Receiver and File Maintenance ........................... 5-1 Downloading Files to a Computer ................................... Downloading Files via Topcon Link ......................... ...Using Windows Explorer ................................ ...Using Topcon Link .......................................... Downloading Files via PC-CDU ............................... Deleting Files from the Receiver’s SD Card ................... Managing Receiver Memory ....................
Table of Contents Appendix A Specifications ...................................................... A-1 Receiver Specifications .................................................... General Details .......................................................... GPS Board Details ..................................................... Bluetooth Module Details .......................................... Internal TPS Spread Spectrum Modem Details ......... Optional GSM/GPRS Module Details .......................
Preface Preface Thank you for purchasing this Topcon product. The materials available in this Manual (the “Manual”) have been prepared by Topcon Positioning Systems, Inc. (“TPS”) for owners of Topcon products, and are designed to assist owners with the use of the receiver and its use is subject to these terms and conditions (the “Terms and Conditions”). NOTICE Please read these Terms and Conditions carefully. Terms and Conditions USE This product is designed to be used by a professional.
Preface TRADEMARKS GR-3™, Topcon Tools™, Topcon Link™, TopSURV™, Modem-TPS™, Topcon® and Topcon Positioning Systems™ are trademarks or registered trademarks of TPS. Windows® is a registered trademark of Microsoft Corporation. The Bluetooth® word mark and logos are owned by Bluetooth SIG, Inc. and any use of such marks by Topcon Positioning Systems, Inc. is used under license. Other product and company names mentioned herein may be trademarks of their respective owners.
Terms and Conditions You may not assign or transfer the Software or this license without the express written consent of TPS. This license is effective until terminated. You may terminate the license at any time by destroying the Software and Manual. TPS may terminate the license if you fail to comply with any of the Terms or Conditions. You agree to destroy the Software and manual upon termination of your use of the receiver.
Preface Manual Conventions This manual uses the following conventions: Example Description File Exit Connection Frequency Enter NOTE TIP NOTICE CAUTION WARNING viii Click the File menu and click Exit. Indicates the name of a dialog box or screen. Indicates a field on a dialog box or screen, or a tab within a dialog box or screen. Press or click the button or key labeled Enter. Further information to note about the configuration, maintenance, or setup of a system.
Manual Conventions DANGER P/N 7010-0736 Under no circumstances should this action be performed.
Preface Notes: x GR-3 Operator’s Manual
Chapter 1 Introduction The GR-3 receiver is a multi-frequency, GPS+ receiver built to be the most advanced and compact receiver for the surveying market. The receiver is a multi-function, multi-purpose receiver intended for precision markets.
Introduction Principles of Operation Surveying with the right GPS receiver can provide users accurate and precise positioning, a requirement for any surveying project. This section gives an overview of existing and proposed Global Navigation Satellite Systems (GNSS) and receiver functions to help you understand and apply basic operating principles, allowing you to get the most out of your receiver.
Principles of Operation Despite numerous technical differences in the implementation of these systems, satellite positioning systems have three essential components: • Space – GPS, GLONASS, and GALILEO satellites orbit approximately 12,000 nautical miles above Earth and are equipped with a clock and radio. These satellites broadcast ranging signals and various digital information (ephemerides, almanacs, time&frequency corrections, etc.).
Introduction Calculating Differential Positions DGPS, or Differential GPS, is a relative positioning technique where the measurements from two or more remote receivers are combined and processed using sophisticated algorithms to calculate the receivers’ relative coordinates with high accuracy.
Principles of Operation A number of differential positioning implementations exist, including post-processing surveying, real-time kinematic surveying, maritime radio beacons, geostationary satellites (as with the OmniSTAR service), and satellite based augmentation systems (WAAS, EGNOS, MSAS). The real-time kinematic (RTK) method is the most precise method of real-time surveying. RTK requires at least two receivers collecting navigation data and communication data link between the receivers.
Introduction • Integrity – Fault tolerance allows a position to have greater integrity, increasing accuracy. Several factors combine to provide fault tolerance, including: – Receiver Autonomous Integrity Monitoring (RAIM) detects faulty GNSS satellites and removes them from the position calculation. – Five or more visible satellites for only GPS or only GLONASS; six or more satellites for mixed scenarios. – Satellite Based Augmentation Systems (WAAS, EGNOS, etc.
Principles of Operation After the receiver locks on to four or more satellites, its absolute position in WGS-84 and the time offset between the receiver clock and GPS time are computed. This information and the measurement data can be stored in the optional MMC or SD card1 and downloaded later onto a computer, then processed using a post-processing software package. When the receiver operates in RTK mode, raw data measurements can also be recorded into the receiver’s internal memory.
Introduction Getting Acquainted The GR-3 is a 72-channel GPS receiver with external, detachable batteries, two data ports, an interface for controlling and viewing data logging, external memory card slot, an internal radio modem, a Bluetooth® wireless technology module, and an optional GSM/GPRS module. Batteries The GR-3 receiver comes equipped with two detachable, rechargeable batteries (Figure 1-2) for powering the receiver. Figure 1-2.
Getting Acquainted fully charged in approximately six hours. The batteries should run at no less than 80% capacity after 500 charging cycles. These batteries do not need to be drained before recharging. The charger has two ports, one button, and three LEDs. • The two ports connect the charger to either a receiver or an external power source. The ports charge or drain the batteries simultaneously. • The STATUS button activates the battery LEDs.
Introduction The AA battery shell (Figure 1-4) holds four AA batteries to provide an easily portable backup power source for the receiver. Due to variances in AA battery capacity, and the mode of the receiver and type of modem, the amount of time the receiver is powered will vary. Figure 1-4. AA Battery Shell (Open) CAUTION Do not use rechargeable AA batteries. Do not use the AA battery shell when the radio modem is in transmitter mode.
Getting Acquainted MINTER The MINTER is the receiver’s minimum interface used to display and control data input and output (Figure 1-5). The battery LEDs display the power status for each battery: • Green – indicates greater than 85% charge. • Orange – indicates an intermediate charge. • Red – indicates less than 15% charge. The STAT LED displays the status of tracked satellites. • Red blink – receiver is on, but no satellites being tracked.
Introduction The REC LED displays the data recording status. See “The FUNCTION button” on page 1-13 for more information on REC LED behavior when using the FUNCTION button. • Green blinks – each blink indicates that data is being written to the SD/MMC card. • Solid Orange – indicates the receiver is changing modes. • Orange blinks – indicates that the receiver is checking its internal file system (after clearing the NVRAM or loading new firmware).
Getting Acquainted Table 1-1. RX TX LED Indications (Continued) • Solid Orange (Red and Green) – the modem is initializing. • Green flashes – the modem is on, registered on the network, and is waiting for incoming calls (Slave mode). GSM/GPRS • Solid Red – a connection has been established. • Green flashes – the modem is in direct control mode (Daisy Chain). • Orange flashes – an error has occurred (initialization error, wrong PIN code, etc.).
Introduction Table 1-2. FUNCTION Button Operations and REC LED Status FUNCTION Key REC LED Status When data recording is off, and the FUNCTION key is... Not pressed No light No data recording. Orange blink Internal file system test in progress. Red No free memory; hardware problem with data recording. No SD/MMC card. If FUNCTION key mode is “LED blink mode switch” Pressed for < 1 second Orange Release to change information mode.
Getting Acquainted Table 1-2. FUNCTION Button Operations and REC LED Status (Continued) FUNCTION Key REC LED Status When data recording is on, and the FUNCTION key is... Red No free memory; hardware problem with data recording. If FUNCTION key mode is “LED blink mode switch” Green Not pressed Data recording started (post-processing occupation mode undefined). If FUNCTION key mode is Occupation mode switch Green Data recording started (Kinematic postprocessing occupation mode).
Introduction Data and Power Ports The GR-3 has the following three ports (Figure 1-6): • USB – rimmed in yellow; used for high-speed data transfer and communication between the receiver and an external device. The body of the connector on the corresponding cable is yellow. • Serial – rimmed in black; used for communication between the receiver and an external device. The body of the connector on the corresponding cable is black.
Getting Acquainted External Radio Antenna Connector The SS antenna connects to the external antenna connector on the GR-3 radome (Figure 1-7). The SS/GSM antenna uses a reverse polarity TNC connection. External Antenna Connector Figure 1-7. GR-3 Radome and External Antenna Connector Connector The bottom connector (Figure 1-8) connects the receiver to either a standard 5/8'' thread pole/adapter or the quick disconnect (see “The quick disconnect adapter” on page 1-21 for details).
Introduction SD/MMC and SIM Card Slots The SD/MMC1 and SIM card slots reside under the batteries near the base of the dome. The SD/MMC card slot is located to the left of the MINTER inside the battery pocket (Figure 1-9) and connects an optional SD/MMC card to the receiver board to provide memory. Once installed, the SD/ MMC card usually remains inside the receiver. The data that resides on the SD/MMC card can be accessed via the USB or serial port, or Bluetooth wireless technology.
Getting Acquainted Cables The GR-3 package includes standard communication and power cables for configuring the receiver and providing a power source to the receiver. Table 1-3 lists the cables included in the GR-3 package. Table 1-3. GR-3 Package Cables Cable Description Cable Illustration Power cable Connects the power supply unit to a grounded outlet. U.S.
Introduction Other Accessories Along with the following accessories, the GR-3 package includes a 128 MB SD memory card, 3-meter measuring tape, an adjustable range pole, and a cable bag. The Power Supply unit (p/n 22-034101-01) charges the internal batteries when connected to a grounded outlet (Figure 1-10). This unit converts the alternating current (AC) normally supplied from an electrical outlet to a direct current (DC) used to charge the batteries and/or power the receiver.
Getting Acquainted The universal tribrach and tribrach adapter (p/n 22-006008-01 and p/n 22-006009-011) are used to level the tripod and secure the receiver or antenna to the tripod (Figure 1-12). Figure 1-12. Universal Tribrach and Tribrach Adapter The quick disconnect adapter (p/n 02-850905-01) connects to the range pole for the receiver to slip into the top. Using the side clips, the receiver can be quickly connected to/disconnected from the range pole (Figure 1-13). Figure 1-13.
Introduction Optional Accessories Topcon offers a wide variety of accessories especially designed to extend your job reliability and efficiency. For more details on the optional accessories available for the GR-3, contact your local Topcon dealer. The precision tribrach adapter (Figure 1-14) is used to precisely center, align, and level the tripod over a point. The horizontal spacer (p/n 60419) inserts into the precision tribrach and allows the receiver to sit securely on the precision tribrach.
Option Authorization File (OAF) The ODU-to-alligator clips cable (p/n 14-008097-01LF) connects the charging cradle or receiver to an auxiliary battery for powering the receiver during survey operations (Figure 1-13). Figure 1-16. Auxiliary Power Cable – ODU-to-Alligator Clips Option Authorization File (OAF) Topcon Positioning Systems issues an Option Authorization File (OAF) to enable the specific options that customers purchase.
Introduction Notes: 1-24 GR-3 Operator’s Manual
Chapter 2 Pre-survey Preparation Before beginning to survey with the GR-3 receiver, the following software needs to be installed and configurations need to be applied: Install receiver configuration software See “Installing Topcon Software” on page 2-2. Optional: install SD card and/or SIM card See “Installing the Optional SD and SIM Cards” on page 2-7. Charge the batteries See “Charging the Batteries” on page 2-9.
Pre-survey Preparation Installing Topcon Software The Topcon GPS+ CD includes the following software programs used for configuring and maintaining the receiver. This software is also available on the TPS website to registered users. • PC-CDU Lite ver. 2.1.15 or newer • BTCONF ver. 1.2 or newer • Modem-TPS ver. 2.0 or newer • FLoader ver 1.0.07 or newer If installing the program(s) from the GPS+ CD, insert the CD into the computer’s CD-ROM drive.
Installing Topcon Software 1. Create a PC-CDU folder on your hard drive and place the compressed PC-CDU zip file (retrieved from either the website or the GPS+ CD) in this folder. 2. Navigate to the PC-CDU folder and double-click the PC-CDU zip file. 3. Extract the PCCDU.EXE and associated *.dll file to the PC-CDU folder (Figure 2-1). 4. Create a shortcut on the computer’s desktop for quick access to PC-CDU (Figure 2-1). Figure 2-1.
Pre-survey Preparation 2. Keep the default installation location or select a new location. Click Finish (Figure 2-2). Figure 2-2. Select Modem-TPS Installation Location and Install 3. Click OK to complete the installation (Figure 2-3). 4. If desired, create a shortcut on the computer’s desktop for quick access to Modem-TPS (Figure 2-3). Figure 2-3.
Installing Topcon Software 1. Create a BTCONF folder on your hard drive and place the compressed BTCONF zip file (retrieved from either the website or the GPS+ CD) in this folder. 2. Navigate to the BTCONF folder and double-click the BTCONF zip file. 3. Extract the btconf.exe to the BTCONF folder. 4. Create a shortcut on the computer’s desktop for quick access to BTCONF (Figure 2-4). Figure 2-4. Extract Program and Create Shortcut To uninstall BTCONF, navigate to the location of the *.exe file.
Pre-survey Preparation Installing FLoader FLoader is a firmware loading program for the power board, GPS module, and modem board inside the receiver. FLoader is available from the TPS website or on the GPS+ CD. Computer requirements for FLoader are: Windows® 98 or newer and an RS-232C port or Bluetooth wireless technology. Use FLoader version 1.0.07 or newer to correctly configure the receiver. 1.
Installing the Optional SD and SIM Cards Installing the Optional SD and SIM Cards Behind each detachable battery is a slot for the optional SD card or the optional SIM card. The SD card provides memory space in which to save logged data; the SIM card provides telephony communication for data transfer between two GSM-capable receivers. The SD card can be purchased at your local computer store; the SIM card can be purchased at your local cellular phone supply store.
Pre-survey Preparation Once the receiver is turned on, the receiver board will detect the SD card and it will be ready to use as needed. To install the SIM card (Figure 2-7): The SIM card must support Circuit Switched Data to communicate directly between receivers. The SIM card must have GPRS support to communicate with a GPS Network IP address. NOTICE 1. 2. 3. 4.
Charging the Batteries Charging the Batteries Before beginning to work, fully charge the batteries for maximum operating time (Figure 2-8 on page 2-10). • If the batteries are attached to the charging cradle, an approximately 6-hour charge cycle will fully charge the batteries; the batteries will charge simultaneously. • If the batteries are attached to the GR-3, an approximately 6-hour charge cycle will fully charge the batteries; the batteries will charge simultaneously.
Pre-survey Preparation To grounded outlet Figure 2-8. Insert Batteries in Charger and Connect to Outlet The Li-Ion batteries used in the battery packs should run at no less than 80% capacity after 500 charging cycles. These batteries do not need to be drained before recharging. Power Management Topcon’s PC-CDU software provides an interface for various configuration, monitoring, and management functions for the receiver.
Power Management 3. Select the Power Mode drop-down list to set the desired power source (Figure 2-9). Current Mode displays the current power source; if using the cradle, it will show “extbat.” • Auto – receiver automatically selects the power source • Mix – the batteries will discharge almost simultaneously • Battery A – both batteries will discharge in sequence: first A, then B, A, B, and so on. In this case, battery B will last 1 to 2 hours longer.
Pre-survey Preparation Figure 2-10. Select Charger Mode 5. Select the Turn on/off Slots drop-down list to set power output on internal slots (Figure 2-11). • On – slot C is powered if the receiver is turned on • Off – internal slot will not be powered even if the receiver is turned on • Always – internal slot will be powered even if the receiver is turned off Figure 2-11. Select Power Output Modes – Ports and Slots 6. View the Voltages information (Figure 2-12 on page 2-13).
Power Management • Charger – displays the charger’s output voltage during battery charging Figure 2-12. View Voltages Information 7. Select and check the Enable Low Power Mode check box to put the receiver’s processor into low power consumption mode (Figure 2-13). Figure 2-13. Enable and Apply Power Settings 8. Click Apply.
Pre-survey Preparation Powering the Receiver When powered from the internal batteries, the receiver will constantly switch from one battery to the other, maintaining a difference of 0.4 V between the batteries. To check the status of the internal batteries, view the BATT LED or check the status using available Topcon software. • Check the BATT LEDs for battery status. – A green light indicates greater than 85% charge. – An orange light indicates an intermediate charge.
Powering the Receiver To attach the batteries (Figure 2-14): 1. With the battery slightly tipped, place the bottom of the battery into the bottom of the battery pocket. 2. Gently push the top of the battery into the battery pocket until it snaps into place. Make sure that the clip at the top of the battery completely snaps into place. Figure 2-14.
Pre-survey Preparation To assemble the AA battery shell (Figure 2-16): CAUTION Do not use rechargeable AA batteries. Do not use the AA battery shell when the radio modem is in transmitter mode. - + - + + - + - 1. Slide the back cover of the AA battery shell down and lift off. 2. Insert four AA batteries as shown on the inside of the shell (and in Figure 2-16 below). • The batteries on the left lay with the positive end towards the bottom of the shell.
Powering the Receiver Using an Auxiliary Power Source In addition to the attached batteries, the receiver connects to external batteries. External batteries allow you to continue using the receiver in case the internal batteries become discharged. The batteries in the charging cradle will not charge the internal/detachable batteries. The charging cradle is used to power the receiver.
Pre-survey Preparation To connect the receiver to an auxiliary battery (Figure 2-18): Use the ODU-to-alligator clips cable (p/n 14-008097-01LF) to directly connect the auxiliary battery and the receiver’s power port (without SAE). NOTICE When powering the receiver using external batteries, set the charger mode to Off. Otherwise, the detachable batteries will also charge, causing operation time to decrease. See “Power Management” on page 2-10 for more information on setting the charger mode. 1.
Connecting the Receiver and a Computer Turning On/Off the Receiver To turn ON the receiver, press and hold the power button until the LEDs briefly flash. To turn OFF the receiver, press and hold the power key for more than one and less than four seconds (until both the STAT and the REC LEDs are off). This delay (about 1 second) will prevent the receiver from being turned off by mistake.
Pre-survey Preparation Establishing a Wireless Connection The GR-3 receiver contains Bluetooth wireless technology that allows file transfer and synchronization between the receiver and any other external device that supports Bluetooth wireless technology; for example, an FC-100, or a computer with USB-to-Bluetooth adapter or PCMCA-to-Bluetooth adapter installed. NOTICE Changing the receiver’s Port D default settings will affect the Bluetooth link.
Connecting the Receiver and a Computer Establishing an RS232 Cable Connection 1. Using the RS232 cable, connect the serial port of your computer (usually COM1) to the receiver’s serial port. 2. Press the power buttons on the receiver and computer to turn them on. 3. Connect to the desired configuration software (PC-CDU, Modem-TPS, etc.) as described in the configuration sections. Establishing a USB Connection Make sure the computer has the TPS USB driver installed and that the USB option is enabled. 1.
Pre-survey Preparation Bluetooth Module Configuration Use BTCONF, Topcon’s Bluetooth module’s configuration program, and your computer to: • access the Bluetooth wireless technology module • configure the Bluetooth module • check or change the module’s configuration To access the Bluetooth wireless technology module, first download and install BTCONF, then connect your computer and the receiver and run the configuration program. See “Installing BTCONF” on page 2-4 for details.
Bluetooth Module Configuration 3. From the drop-down list in the upper left corner, select the computer serial port used for communication (Figure 2-20). 4. Click Connect to connect the computer and Bluetooth module. Figure 2-20. Select Communication Port and Click Connect Once the receiver and computer connect through BTCONF, the Identification tab (Figure 2-21) displays the following information: • Bluetooth name – the name of the Bluetooth module.
Pre-survey Preparation 5. Click the Parameters tab (Figure 2-22). The Parameters tab sets identifying and security information for your Bluetooth module. The security section allows you to set data security and unauthorized access parameters for the Bluetooth module. 6. Enter up to 14 characters to set a unique name for the Bluetooth module (Figure 2-22), and click Apply. Figure 2-22. BTCONF Parameters Tab 7.
Bluetooth Module Configuration Figure 2-23. BTCONF Security Parameters 8. Click the Serial Interface tab (Figure 2-24). Enable Echo to display Bluetooth module replies and corresponding commands on the computer terminal. If needed, click Apply. 9. Click Disconnect then Exit to quit BTCONF. Figure 2-24.
Pre-survey Preparation Collecting Almanacs and Ephemerides Each satellite broadcasts a navigation message that includes the ephemeris parameters of the satellite, the almanac, and various other information. The ephemeris parameters describe the orbital motion of the satellite and are used to predict its location/trajectory. The almanac gives the approximate orbit (course) for the transmitting satellite and all other satellites in the same system only.
Collecting Almanacs and Ephemerides • After loading new firmware. • After clearing the NVRAM. • Before surveying.
Pre-survey Preparation Notes: 2-28 GR-3 Operator’s Manual
Chapter 3 GR-3 Configuration Both Base and Rover receivers must be configured according to the desired survey method. • In applications where real-time positioning results are required, the Base receiver provides the correction information needed to properly calculate the location of the Rover receiver. A Base station is normally set up over a known point and collects GPS/GLONASS data from satellites.
GR-3 Configuration When configuring receivers for RTK surveying, use the following checklist to ensure the receivers are properly set up. Perform pre-survey functions as described in Chapter 2. Configure one receiver as an RTK Base station and the other receiver as an RTK Rover. See “Configuring the Receiver” on page 3-10. Configure the communication data link for transmitting and receiving corrections. • For a Spread Spectrum modem, see “Configuring a Spread Spectrum Radio Modem” on page 3-3.
Configuring the Radio Modem Configuring the Radio Modem Modem-TPS is Topcon’s radio modem configuration utility for modems embedded in Topcon receivers. Modem-TPS provides the following functions: • Connecting a computer to an integrated radio modem via a serial port or Bluetooth wireless technology. • Displaying information about the radio modem installed in the receiver. • Programming the radio modem’s settings.
GR-3 Configuration See “Configuring a GSM Radio Modem” to configure the GSM portion of a spread spectrum radio setup. 1. Connect the computer and receiver. Turn on the receiver. 2. Open Modem-TPS and select the COM port the receiver is connected to (Figure 3-1). Click Connect. Figure 3-1. Connect to Modem-TPS 3. On the Radio Link tab, set the following parameters (Table 3-1) and click Apply (Figure 3-2 on page 3-6). Table 3-1.
Configuring the Radio Modem Table 3-1. Receiver Parameters for the Radio Link Tab (Continued) Parameter Base Receiver Output power Select the transmission power for the radio modem. Link rate Select the data transmission rate for the radio link. As opposed to a baud rate (the rate of data transfer through a serial cable interface), the link rate is the amount of data (measured in bits) the radio modem can transmit/receive over the air in a specified time period (measured in seconds).
GR-3 Configuration Table 3-2. Link Rate vs. Baud Rate Comparison (Continued) Data packet size (in bits) 24000–51000 TX serial baud rate (bps) 57600 Link rate (bps) 51000 RX serial baud rate (bps) 57600 a. Recommended link rate for this data packet size. 4. On the Serial Interface tab, select the following baud rate parameters and click Apply (Figure 3-2). • Baud Rate – select a baud rate for the modem’s serial port. The same rate must be used for the receiver and the modem.
Configuring the Radio Modem Configuring a GSM Radio Modem NOTICE To comply with RF exposure requirements, maintain at least 25cm between the user and the radio modem. For GR-3 receivers, the integrated TPS SS radio modem configured with a GSM module provides TX/RX GSM communications between a Base and Rover, or communication with a GPS network using IP based connections. To configure a GSM radio modem, have the following ready: • Computer running Windows® 98 or newer • Modem-TPS ver 2.
GR-3 Configuration Table 3-3. Receiver Parameters for the FCS Tab Parameter Base Receiver Rover Receiver Mode Select Slave. Select Master. PIN Enter a Personal Identification Number (PIN) if required. Dial Leave blank. Send time Enter a period of time in seconds in which the base/rover GSM modem will send a service word to the rover/base GSM modem. • This parameter is used to maintain reliable communication between a pair of modems and avoid unnecessary modem reinitialization.
Configuring the Radio Modem 4. To view GSM modem information, click GSM info (Figure 3-5). Click Quit to return to the GSM tab. Signal quality is a reading of the strength of the GSM signal. The lower the number—the closer to zero—the better the signal quality. The minimum signal (cutoff) is -111db. Figure 3-5. View GSM Information 5. On the Serial Interface tab, select a baud rate for the modem’s serial port. The same rate must be used for both the receiver and the modem. 6.
GR-3 Configuration Configuring the Receiver The GR-3 can be configured in several ways for collecting data for RTK or post-processing. • A static Base station collects measurement information and saves this data to its internal memory. • An RTK Base station collects measurement information, determines differential corrections, and transmits them to the RTK Rover(s). • A static Rover collects observation data from the same satellites during the same time interval as the static Base station.
Configuring the Receiver Once you have established a connection between the receiver and the computer, you will be able to: • configure the receiver and its components • send commands to the receiver • download files from the receiver’s memory • load a new OAF and other configuration files to a receiver The following Base and Rover configurations are recommended for the most common applications. However, you can select configuration parameters as needed for your particular jobsite.
GR-3 Configuration 4. On the Connection Parameters dialog box, select the following parameters (Table 3-4) and click Connect (Figure 3-7). Table 3-4. Connection Parameters Parameter RS232 or Bluetooth USB Connection Mode Select Direct. Port Select the port connecting the computer and receiver (typically COM1, COM2 for RS232 and COM3, COM4, etc. for Bluetooth) Select USB Baud Rate Select the communication rate between the receiver and the computer (usually 115200).
Configuring the Receiver Once a PC-CDU connection with the receiver has been established, the current 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 3-8). Figure 3-8. PC-CDU Connection Established 5. Click Configuration Receiver.
GR-3 Configuration 7. Click the MINTER tab and configure the following settings (Table 3-5), then click Apply (Figure 3-10). Table 3-5. Receiver Parameters for the MINTER Tab Parameter Base Receiver Rover Receiver Recording interval Enter 15 seconds. Elevation mask angle Enter 15 degrees. File name prefix Enter a unique ID, such as the last 3 digits of receiver’s serial number.
Configuring the Receiver 8. Click the Positioning tab and set the Elevation mask to 15 (Figure 3-11), then click Apply. Figure 3-11. Configure Receiver Positioning – Elevation Mask 9. For the Base receiver, click the Base tab and set the following parameters (Figure 3-12 on page 3-16), then click Apply. • GPS/GLO at one time – enable • Antenna position – enter Lat, Lon, and Alt values using one of the following methods: – If known, type in the values.
GR-3 Configuration Figure 3-12. Base Configuration 10. For the Rover receiver, click the Rover tab and set the following parameters, then click Apply (Figure 3-13 on page 3-17). • Positioning Mode – For post-processed surveys, select Standalone; for RTK surveys, select RTK float or RTK fixed. • RTK Parameters, RTK mode – select either Extrapolation for RTK float (kinematic) or Delay for RTK fixed (static). – Extrapolation is for low-latency, high frequency output (>= 5 Hz) RTK applications.
Configuring the Receiver • RTK Parameters, Ambiguity fixing level – (not applicable to RTK Float) select either Low, Medium, or High for indicator states of 95%, 99.5%, or 99.9%, respectively. The RTK engine uses the ambiguity fix indicator when making decisions whether or not to fix ambiguities. The higher the specified confidence level, the longer the integer ambiguity search time. Figure 3-13. Rover Configuration Continue with step 11 for RTK surveys or step 12 on page 3-18. 11.
GR-3 Configuration Table 3-6. Receiver Parameters for the Ports Tab (Continued) Parameter Base Receiver Rover Receiver Period (sec) Enter the interval at which the receiver will transmit differential corrections. n/a (Leave the default.) Baud rate Select a baud rate to use for transmitting differential messages from the receiver board to the modem module The baud rate must match the modem’s serial port speed. RTS/CTS Select to enable handshaking. Base Rover Figure 3-14.
Configuring the Receiver Figure 3-15. Configure Mulitpath Parameters 13. Click OK to save the settings and close the dialog box. Once the receiver is configured, the configuration will remain until you change it using PC-CDU/TopSURV/Pocket-3D or clearing the NVRAM. For more details on the settings available for configuring the Base and Rover receivers, refer to the PC-CDU Reference Manual. 14. Continue with other configuration activities or click File Disconnect, then File Exit to quit PC-CDU.
GR-3 Configuration MINTER Configuration The Minimum INTERface (MINTER) consists of two keys (power and FUNCTION) that control the receiver’s operation, four LEDs (STAT, REC, RX/TX, and BT) that display the receiver’s operational status, and two LEDs that display the battery status (Figure 3-16). REC RX TX STAT BT Battery FUNCTION Battery FUNCTION Power Button FUNCTION Button Figure 3-16. MINTER The MINTER performs the following functions.
MINTER Configuration • Shows the status (high charge, intermediate charge, or low charge) of the battery (BATT LED). • Shows the power status for the receiver (BATT LED). • Shows the status of the modem and if it receives signals (TX RX LED). • Shows Bluetooth activity (BT LED). Use PC-CDU to configure MINTER settings. The procedure below describes the most common settings; refer to the PC-CDU Reference Manual for other possible MINTER configurations. 1. Connect your receiver and computer.
GR-3 Configuration • • • • • Files Creation mode on page 3-23 Automatic File Rotation Mode (AFRM) on page 3-23 FN key mode on page 3-24 Initial data collection dynamic mode on page 3-25 Data recording auto-start on page 3-25 Figure 3-18. Receiver Configuration – MINTER Tab Recording Interval parameter This parameter specifies the logging rate of the log file when the MINTER FUNCTION button (pressed for 1–5 seconds) activates data logging.
MINTER Configuration The file name depends on both the file creation time (month and day) and additional letter suffixes to avoid confusion between files created on the same day. Always Append to the File parameter If you want new receiver data to be appended to an existing log file, enter the desired file name in this parameter. The setting can be up to 20 characters long.
GR-3 Configuration becomes zero, then file rotation automatically stops. The counter initializes with AFRM. Note that a log file opens immediately after turning AFRM on. This startup file is not considered a file rotation event; the AFRM counter will not decrement. Values are 0 to [231-1]; default value is 0 (zero). Zero means that an unlimited number of log files will be created. NOTICE The receiver’s memory holds up to 512 files.
MINTER Configuration Initial Data Collection Dynamic Mode parameter These radio buttons specify the starting occupation type descriptor inserted at the beginning of receiver files logged. Select Static or Kinematic to specify that the corresponding log file will start with a static (STOP) or kinematic (GO, Trajectory) occupation, respectively. Data Recording Auto-start parameter These radio buttons allow you to program your receiver’s behavior in the event of a power failure.
GR-3 Configuration Also, if Always is enabled, the receiver will automatically start logging data (to a newly created or an existing file) in the following three cases: • After turning on the receiver using the power button. • After resetting the receiver (using PC-CDU). • After taking the receiver out of Sleep Mode. Figure 3-19.
Chapter 4 GR-3 Receiver Setup and Survey After configuring the receivers for surveying, each receiver needs to be setup up and the receiver’s height measured and the survey can begin. The MINTER provides quick access for logging data, changing receiver modes, and viewing general data logging and satellite information during a survey. Receiver Setup A typical GPS survey system consists of a Base station set up over a known point and a Rover receiver set up to be a mobile data collector.
GR-3 Receiver Setup and Survey To set up the Base receiver (Figure 4-1): 1. Install a tripod over a known control point. 2. Secure the universal tribrach to the tripod. Place the tribrach adapter (either universal or precision) on the tribrach and tighten the screws. 3. Insert the L-plug (horizontal spacer) into the precision tribrach adapter. 4. Attach the GR-3 receiver to the tribrach adapter. Attach the desired antenna to the modem antenna connector. 5.
Receiver Setup To set up the Rover receiver (Figure 4-2): 1. If needed, attach the quick disconnect to the bipod/range pole. NOTICE Use a bipod during post-process surveys to ensure the antenna/receiver remains unmoving during data logging. 2. Attach the GR-3 receiver to the quick disconnect. Make sure the receiver locks into place. 3. Attach the desired antenna to the modem antenna connector. GR-3 Recevier Quick disconnect 5/8 inch screw Lock Figure 4-2.
GR-3 Receiver Setup and Survey Step 2: Measure Antenna Height The location of the antenna relative to the point being measured is very important for both surveys in which the elevation of the points is important and in surveys for horizontal location only. Horizontal surveys are often larger in area than can reliably fit on a flat plane, therefore the antenna adjustment must be done in three dimensions and then projected onto a two dimensional plane.
Receiver Setup 1. Measure the antenna height above the control point or marker, either the slant height or the vertical height (Figure 4-3). 2. Record the antenna height, point name, and start time in the field notes. 66.5mm 234.5mm 228mm 228mm 228mm A 168mm B A = ARP to edge = 78.3 B = ARP to corner = 95.
GR-3 Receiver Setup and Survey Step 3: Collect Data See the remaining sections in this chapter for more information on collecting data. 1. Turn on the receiver. The STAT (status) light (LED) will blink red at first. 2. Once the receiver has locked on to one or more satellites, the STAT light will blink green for GPS satellites and orange for GLONASS satellites. A short red blink indicates that the receiver has not solved a position. Four or more satellites provide optimal positioning. 3.
MINTER Operation MINTER Operation The MINTER is the receiver’s minimum interface used to display and control data input and output (Figure 4-4). REC RX TX STAT BT Battery FUNCTION Battery FUNCTION Power Button FUNCTION Button Figure 4-4. GR-3 MINTER The MINTER performs numerous functions, including the following: • Turns the receiver on or off. • Turns data recording on or off (FUNCTION key). • Changes the receiver’s information mode.
GR-3 Receiver Setup and Survey See “MINTER” on page 1-11 for a full description of the MINTER. To turn on/off the receiver, press the power button (Figure 4-5). • When turning on, press the power button until the MINTER’s LEDs briefly flash. • When turning off, press the power button until the LEDs go out, then release. Press the power button for about 1 second to turn the receiver on/off. FUNCTION FUNCTION Power Button Figure 4-5.
MINTER Operation “Occupation mode switch” for kinematic surveys. See “FN Key Mode parameter” on page 3-24 for details. Each time you turn off or on data recording, either a new file opens or data appends to a particular file. See “Always Append to the File parameter” on page 3-23 and “Files Creation Mode parameter” on page 3-23 for information on setting these functions. Press the FUNCTION button for 1–5 seconds to start/stop data logging. FUNCTION FUNCTION FUNCTION Button Figure 4-6.
GR-3 Receiver Setup and Survey Static Surveying for Base Stations Static surveying is the classic survey method, well suited for all kinds of baselines (short, medium, long). At least two receiver antennas, plumbed over survey marks, simultaneously collect raw data at each end of a baseline during a certain period of time. These two receivers track four or more common satellites, have a common data logging rate (5–30 seconds), and the same elevation mask angles.
Kinematic (Stop & Go) Surveying for Rover Stations Kinematic (Stop & Go) Surveying for Rover Stations In a kinematic, stop and go survey, the stationary receiver (Base station) is set up at a known point such as a survey monument, or an unknown point. The receiver continually tracks satellites and logs raw data into its memory. The Rover receiver is set up at an unknown point and collects data in static mode for 2 to 10 minutes.
GR-3 Receiver Setup and Survey Real Time Kinematic Surveying With RTK surveying, as with kinematic surveying described above, one receiver serves as the reference station and conducts observations with its antenna affixed to a stationary tripod or some other device. The other receiver functions as a rover and conducts observations (using an antenna) affixed to a mobile pole and moved to observation points.
Real Time Kinematic Surveying • RTK fixed – where the Rover receiver computes current relative coordinates, with ambiguity fixing, in differential mode.
GR-3 Receiver Setup and Survey Notes: 4-14 GR-3 Operator’s Manual
Chapter 5 Receiver and File Maintenance If post-processing the data after completing a survey, the data in the receiver’s memory will need to be downloaded to a computer. Downloading and deleting files will also prepare the receiver’s memory for the next survey. Occasionally, the receiver’s NVRAM may need to be cleared to eliminate communication or tracking problems. As project expectations expand, the receiver’s OAF may need to be updated to provide expanded operation and functionality.
Receiver and File Maintenance TIP Use Topcon Tools to download files from the SD card. Refer to the Topcon Tools Reference Manual for further details. Downloading Files via Topcon Link Topcon Link provides two options for downloading files from a receiver: via Windows® Explorer or via the Topcon Link interface. Before you can download files, you must connect your receiver and computer (see “Connecting the Receiver and a Computer” on page 2-19 for this procedure). ...Using Windows Explorer 1.
Downloading Files to a Computer 4. To stop searching for receivers when the desired receiver has been found, click Stop. Only the discovered receivers will display. Figure 5-2. Break Of Searching Receivers 5. To update information about the receivers connected to the computer port, click Search for connected receivers. 6. To view information about the receiver (Figure 5-3), right-click the desired receiver and select the Properties option. 7. To view the collected raw file, click on the desired receiver.
Receiver and File Maintenance ...Using Topcon Link 1. Connect your receiver and computer. See “Connecting the Receiver and a Computer” on page 2-19 for this procedure. 2. To start Topcon Link, click the Import from Device button on the Toolbar. 3. From the left panel of the Import from Device dialog box, double-click Topcon Receivers (Figure 5-5). Figure 5-5. Import From Device Window 4. The program automatically searches for Topcon receivers connected to the computer ports (COM and USB).
Downloading Files to a Computer 5. To view information about the receiver, right-click the desired receiver and select the Properties option (Figure 5-7). Figure 5-7. Receiver Properties 6. In the right panel of the Import From Device window, navigate to and select, or create, a folder to save the files (Figure 5-8). 7. To view the collected raw file, double click (or click Select in the pop-up menu) the desired receiver.
Receiver and File Maintenance Downloading Files via PC-CDU 1. Connect your receiver and computer. See “Connecting the Receiver and a Computer” on page 2-19 for this procedure. 2. Open PC-CDU. On the Connection Parameters dialog box, enable RTS/CTS handshaking and click Connect (Figure 5-9). Figure 5-9. Connection Parameters – RTS/CTS Handshaking 3. Click File File Manager, then click the Download path tab on the File Manager dialog box (Figure 5-10). Figure 5-10. Find Files to Download 4.
Downloading Files to a Computer To select multiple files, press the shift key while clicking nonsequential files; or, press the Ctrl key and click individual files. Figure 5-11. Download Files 6. Click the Download button. During the download, status indicators display next to each file (Figure 5-12). • Blue indicator – file in queue for downloading. • Red indicator – file currently downloading. • Green indicator – file has successfully downloaded. Figure 5-12. Download Files – Status Indicators 7.
Receiver and File Maintenance Deleting Files from the Receiver’s SD Card Use the following steps to delete files from your receiver. 1. Connect your receiver and computer. See “Connecting the Receiver and a Computer” on page 2-19 for this procedure. 2. On the Connection Parameters dialog box, enable RTS/CTS handshaking (Figure 5-13). Figure 5-13. Connection Parameters – RTS/CTS Handshaking 3. Click File File Manager and select the file(s) to delete on the Download files tab (Figure 5-14 on page 5-9).
Managing Receiver Memory Figure 5-14. Delete Files Managing Receiver Memory When using the receiver in static or dynamic applications, you may need to know the amount of memory the receiver’s log file occupies. The specific memory size depends on the type of data being recorded. Use the formulas below to compute the approximate size of the receiver’s log files. These equations are based on the default set of messages.
Receiver and File Maintenance Managing Receiver Options The Option Authorization File enables certain functions, features, and options in the receiver, such as the following: • the type of signal (L1, L1/L2, etc.) the receiver will process • the amount of data the receiver will store in the memory • the rate at which data will be transmitted or received For a complete list of available options and details, consult with your TPS dealer.
Managing Receiver Options 3. When finished, click Exit on the Option Manager dialog box, then click File Disconnect to disconnect from PC-CDU (and prevent conflicts with serial port management). Figure 5-15.
Receiver and File Maintenance Loading an OAF Topcon Positioning System dealers provide customers with OAF files. For any OAF related questions, e-mail TPS at options@topconps.com and include the receiver’s ID number (see the bottom of the receiver for the ID). 1. To load a new OAF, follow steps one and two in “Checking the Receiver’s OAF” on page 5-10. 2. Click Load at the bottom of the Option Manager dialog box (see Figure 5-15 on page 5-11). 3.
Clearing the NVRAM Clearing the NVRAM The receiver’s Non-Volatile Random Access Memory (NVRAM) holds data required for satellite tracking, such as ephemeris data and receiver position. The NVRAM also keeps the current receiver’s settings, such as active antenna input, elevation masks and recording interval, and information about the receiver’s internal file system.
Receiver and File Maintenance Using PC-CDU to Clear the NVRAM 1. Connect your receiver and computer. See “Connecting the Receiver and a Computer” on page 2-19 for this procedure. 2. Click Tools Clear NVRAM (Figure 5-17). Figure 5-17. Clear NVRAM with PC-CDU While the NVRAM clears, the REC LED flashes green and red; the STAT LED flashes red. The receiver automatically disconnects when finished.
Changing Receiver Modes • Green – all other cases. The delimiter double-blink is followed by six LED blinks corresponding to six receiver tests, where each blink indicates the following information: Blink 1. Blink 2. Blink 3. Blink 4. Sufficient data for position computation. GPS S/N ratios are good (Table 5-1). GLONASS S/N ratios are good (Table 5-1). Oscillator’s frequency offset is less than three ppm (parts per million). Blink 5. Oscillator's Allan Variance is better than 2.
Receiver and File Maintenance Sleep (Off) Mode In sleep mode, the power board and Bluetooth module will continue to draw power from the batteries, causing the batteries to drain over time. Sleep mode is the normal “off” state of the receiver. 1. Turn on your receiver. 2. Press the receiver’s power key for more than four seconds and less than eight seconds. The STAT LED will be orange. The receiver enters Sleep Mode. 3. Any activity on the RS232 port will turn the receiver on.
Loading New Firmware 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, also available on the TPS website. See “Installing FLoader” on page 2-6 for installing FLoader on the computer. 1. Download the new firmware package to your computer. 2. Connect your receiver and computer.
Receiver and File Maintenance Loading Receiver and Power Board Firmware Receiver and power board firmware is released as a compressed file that you download and decompress. This file contains the following three files: • ramimage.ldr – the Receiver board RAM file • main.ldp – the Receiver board Flash file • powbrd.ldr – the Power board RAM file NOTICE You must load all three files when loading new firmware. These files must come from the same firmware package. 1.
Loading New Firmware 2. Click the Program tab and set the Capture Method to “Soft Break Capture” (recommended) (Figure 5-20). Figure 5-20. Program Tab Settings 3. Browse for and select the receiver board’s RAM file and Flash file (Figure 5-20). 4. Click Load and wait until 100% of the files load into the receiver. NOTICE If you selected an incorrect file, an error message displays at the bottom of the dialog box. Select the correct file. 5.
Receiver and File Maintenance 6. Click the Program tab and set the Capture Method to “Soft Break Capture” (recommended) (Figure 5-22). Figure 5-22. Program Tab Settings 7. Browse for and select the Power board’s RAM file (Figure 5-22). 8. Click Load and wait until 100% of the power board file loads into the receiver. NOTICE If you selected an incorrect file, an error message displays at the bottom of the dialog box. Select the correct file. 9. Click File Exit. 10.
Chapter 6 Troubleshooting This chapter will help you diagnose and solve some common problems you may encounter with your receiver. WARNING Do not attempt to repair equipment yourself. Doing so will void your warranty and may damage the hardware. Check This First! Before contacting Topcon support, check the following: • Check all external receiver connections carefully to ensure correct and secure connections. Double check for worn or defective cables.
Troubleshooting Troubleshooting Quick List For receiver power issues: If “The receiver does not power up.” see page 6-3. If “The receiver cannot establish a connection to a computer or external controller.” see page 6-4. For receiver issues: If “The receiver does not lock on to satellites for a long period of time.” see page 6-4. If “The receiver tracks too few satellites.” see page 6-5. If “The receiver cannot obtain Code Differential and/or RTK solutions.” see page 6-5.
Powering Problems Powering Problems All receivers are preset in the factory to “Auto mode” for both batteries. To check these settings, use the following procedure: 1. Connect your receiver and computer and run PC-CDU (see “Connecting the Receiver and a Computer” on page 2-19). 2. Once connected, click Configuration Receiver. 3. On the General tab, view the Power and Charger fields. These fields should be set to “Auto”. If not, change them to Auto and click Apply.
Troubleshooting Receiver Problems The following are some of the most commonly encountered receiver problems. The receiver cannot establish a connection to a computer or external controller. Cable specific problems: D The cable is not properly plugged in. • Check that the cable connector is attached to the correct receiver port. • Unplug the cable, then securely and properly reconnect it to the receiver.
Receiver Problems D The corresponding receiver options may be disabled or expired (L1/L2, GPS/GLONASS must be on to track satellites). • See “Managing Receiver Options” on page 5-10 for details on how to check current options. • Order a new OAF with the desired options activated to enable or extend validity of the corresponding receiver options. Contact your dealer or visit the TPS website for details • Refer to the PC-CDU Reference Manual for a detailed description of options.
Troubleshooting • If the receiver should function as a Rover, ensure it has the proper configuration. See Chapter 3 for details. D The corresponding receiver options may be disabled or expired. • See “Managing Receiver Options” on page 5-10 for details on how to check current options. • Order a new OAF with the desired options activated to enable or extend validity of the corresponding receiver options.
Receiver Problems D The elevation mask is above 15 degrees. Lower the elevation mask. See page 3-15 for information on setting the elevation mask. D The modem battery is low. • Attach an external power source to the receiver. See “Using an Auxiliary Power Source” on page 2-17. • See “Powering the Receiver” on page 2-14 for details. D The transmitting and/or receiving antenna may be improperly connected. • Check that the radio modem’s antenna is securely and properly connected to the antenna connector.
Troubleshooting D There may be a source of radio interference that disrupts radio communications. • Change the RF channel (if possible). • Use a spectrum analyzer to detect the radio characteristics of the interfering signal and change your system’s configuration accordingly. • Remove the source of jamming signal or relocate your radio antennas (if possible). The receiver does not start data logging. D The receiver has no the SD card installed or the memory option is disabled or expired.
Bluetooth Problems Bluetooth Problems The following are some of the most commonly encountered error messages and other problems. BTCONF error message: Can’t find receiver. D The receiver is turned off. Ensure the receiver has power and is turned on. D If using a cable, the cable’s connectors are improperly attached. • Check that the cable connector is attached to the correct serial port. • Unplug the cable, then securely and properly reconnect it to the receiver.
Troubleshooting D The settings for Port D may have been changed. • The settings for Port D are: 115200 baud rate, 8 data bits, 1 stop bit, no parity, and no handshaking. • Try enabling RTS/CTS handshaking for Port D. Do not change other settings. D The corresponding receiver options may be disabled or expired (serial port D must be enabled). • See “Managing Receiver Options” on page 5-10 for details on how to check current options.
Bluetooth Problems BTCONF error message: Open COM# port failed: Access is denied. D Another application uses the computer port dedicated for connection. • Close the application, then re-connect. • Connect the receiver via another, unused computer port. After searching for available devices, none are discovered. D The receiver is not receiving power. • Check that the receiver is getting power and is turned on. • Check that the power cable is attached to the port marked “PWR”.
Troubleshooting D Bluetooth module settings may have changed. 1. If you changed settings for your Bluetooth module, remove it from the list of discovered Bluetooth devices using the Bluetooth manager program (supplied with the device used to manage the receiver). 2. Repeat the search. Modem-TPS Problems The following is the most commonly encountered Modem-TPS problem. Modem-TPS cannot connect to the receiver. D The receiver is turned off. Ensure the receiver has power and is turned on.
TX RX LED Blink Pattern on Error Conditions D The corresponding modem options may be disabled or expired. • See “Managing Receiver Options” on page 5-10 for details on how to check current options. • Order a new OAF with the desired options activated to enable or extend validity of the corresponding receiver options. Contact your dealer or visit the TPS website for details • Refer to the PC-CDU Reference Manual for a detailed description of options.
Troubleshooting • Contact your Dealer to replace the cable. For internal GSM modems: the TX RX LED flashes orange. D The Rover uses the wrong PIN code, or no PIN code was selected. 1. In TopSURV, click Job Config Survey. 2. Click the “...” (continue) button and press Next to navigate to the Rover Radio configuration screen. 3. Press Configure GSM. 4. Select the PIN of the Base Station and press OK. D An initialization error has occurred. • Check that the radio modem’s antenna is undamaged.
Obtaining Technical Support E-mail To contact TPS Customer Support via e-mail, use one of the following electronic mail addresses (Table 6-1). Table 6-1. Technical Support E-mail For Questions Related To... Use... Hardware (receivers, antennas, firmware) hardware@topcon.com GPS+ and 3DMC psg@topcon.com OAF options@topcon.com RTK rtk@topcon.com PC-CDU pccdu@topcon.com If in doubt... support@topcon.com TIP For quick and effective support, provide a detailed description of the problem.
Troubleshooting 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, use: www.topconpositioning.
Appendix A Specifications This TPS product is a 72-channel GNSS receiver with an internal radio modem, a Bluetooth® wireless technology module, an optional GMS module, an optional, removable SD memory card, and a rugged magnesium housing complete with MINTER and cable connectors. NOTICE Performance specifications assume a minimum of 6 GPS satellites above 15 degrees in elevation and adherence to the procedures recommended in this manual.
Specifications Receiver Specifications The following sections provide specifications for the receiver and its internal components. General Details Table A-1 table lists the receiver’s general specifications. Table A-1. Receiver General Specifications Physical Enclosure Magnesium, IPX 6 extrusion, rainproof Color Topcon Yellow and Topcon Grey Dimensions W:156.6 x H:234.5 x D:156.6 mm Weight 1.
Receiver Specifications Table A-1. Receiver General Specifications (Continued) Storage temperature -20 C° to +35 C° with batteries -40 C° to +75 C° without batteries Humidity 95% Power External batteries Li-ion, 3900 mAh, 7.2 V; 2 batteries; detachable Battery size 132 x 52 x 25 (mm) Battery weight 165 g (1 battery) Operating time • • • • • Using new batteries and operating at room temperature. Modem = off – approx. 16 hours 915 receive-only modem – approx.
Specifications Table A-1. Receiver General Specifications (Continued) I/O Communication Ports A high speed RS232 serial port (rimmed in black), a USB port (rimmed in yellow), and an internal Bluetooth communication port (port D). Port specifications RS232 Serial Port Baud rate: 460800,230400,115200(Default),57600, 38400,19200,9600,4800,2400,1200,600, 300 Flow control: RTS/CTS Length: 7,8 (default) Sop bit: 1 (default), 2 Parity: None (default), Odd, Even Bluetooth port Available USB port Version 1.
Receiver Specifications Table A-1. Receiver General Specifications (Continued) NMEA NMEA version Ver. 2.1, 2.2, 2.3, 3.0 output Messages GGA, GLL, GNS, GRS, GSA, GST, GSV, HDT, RMC, VTG, ZDA, ROT, GMP Output interval 1Hz standard; 5, 10, 20Hz optional DGPS Correction format RTCM SC104 Ver 2.1, 2.2, 2.3, and 3.
Specifications Table A-1.
Receiver Specifications GPS Board Details Table A-2 lists the GPS board’s general specifications. Table A-2.
Specifications Table A-2. GPS Board Specifications (Continued) Features (continued) Output of grid coordinates CMR and CMR+ support Memory Internal Memory SD (secure data) card, removable Capacity Dependent on capacity of the installed SD/MMC carda, currently up to 1 GB Logging Time 53 hours (8 MB, 15sec, L1/L2, 7 satellites) Logging Interval 0.05 to 86400 seconds, depending on purchased options a.
Receiver Specifications Internal TPS Spread Spectrum Modem Details Table A-4 lists the internal TPS spread spectrum modem’s general specifications. Table A-4.
Specifications Table A-4. Internal TPS Spread Spectrum Specifications (Continued) Data communications Serial interface RS232 Serial data rate 9600, 19200, 38400, 57600 bps, user selectable Effective radio link rate 9600, 10200, 17000, 51000 bps User selectable for FH915; automatic selection for FH915+ Error correction FEC (15.7), majority decoding Antenna Type Type 1/2 wave articulating whip Connector Reverse polarity TNC Gain 2.
Connector Specifications Connector Specifications The GR-3 has one antenna connector for radio transmission/reception and three port connectors for power and data upload/download. Radio (Modem) RF Connector The modem connector (Table A-6) is a reverse polarity TNC connector for spread spectrum. Table A-6.
Specifications Table A-7. Power Connector Specifications (Continued) Number Signal Name Dir Details 2 Power_INP P 9 to 21 volts DC input 3 Power_GND P Ground, power return 4 Power_GND P Ground, power return 5 Aux_Power P 9 to 21 volts DC input Serial C-RS232 Connector Rimmed in black, the serial RS232 connector (Figure A-2) is a sealed receptacle, 7 pin, ODU part number G80F1C-T07QC00-0000. 2 3 7 1 4 6 5 Figure A-2.
Connector Specifications Table A-8. RS232 Connector Specifications (Continued) Number Signal Name Dir 7 Details Not used USB Connector Rimmed in yellow, the USB connector is a sealed receptacle, 4 pin TPS cable connector (Figure A-3). 2 1 3 4 Figure A-3. USB Connector for GGD Options Table A-9 gives the USB connector specifications. Table A-9.
Specifications Notes: A-14 GR-3 Operator’s Manual
Appendix B Safety Warnings General Warnings NOTICE WARNING DANGER P/N 7010-0736 To comply with RF exposure requirements, maintain at least 25cm between the user and the radio modem. TPS receivers are designed for survey and survey related uses (that is, surveying coordinates, distances, angles and depths, and recording such measurements). This product should never be used: • Without the user thoroughly understanding this manual. • After disabling safety systems or altering the product.
Safety Warnings Battery Pack Warnings DANGER DANGER WARNING B-2 Never attempt to open the casing of the detachable batteries! Lithium-Ion batteries can be dangerous if mishandled! Do not incinerate or heat battery pack above 212 degrees fahrenheit (100 degrees celsius). Excessive heat can cause serious damage and possible explosion. Tampering with the batteries by end users or nonfactory authorized technicians will void the battery’s warranty. • Do not attempt to open the battery pack or replace it.
Usage Warnings Usage Warnings CAUTION CAUTION P/N 7010-0736 If this product has been dropped, altered, transported or shipped without proper packaging, or otherwise treated without care, erroneous measurements may occur. The owner should periodically test this product to ensure it provides accurate measurements. Inform TPS immediately if this product does not function properly. Only allow authorized TPS warranty service centers to service or repair this product.
Safety Warnings Notes: B-4 GR-3 Operator’s Manual
Appendix C Regulatory Information The following sections provide information on this product’s compliance with government regulations for use. FCC Compliance This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation.
Regulatory Information CAUTION Any changes or modifications to the equipment not expressly approved by the party responsible for compliance could void your authority to operate such equipment. Community of Europe Compliance The product described in this manual is in compliance with the R&TTE and EMC directives from the European Community. WEEE Directive Following information is for EU-member states only: The use of the symbol indicates that this product may not be treated as household waste.
Appendix D Warranty Terms TPS laser and electronic positioning equipment are guaranteed against defective material and workmanship under normal use and application consistent with this Manual. The equipment is guaranteed for the period indicated, on the warranty card accompanying the product, starting from the date that the product is sold to the original purchaser by TPS’ Authorized Dealers.1 During the warranty period, TPS will, at its option, repair or replace this product at no additional charge.
Warranty Terms Notes: D-2 GR-3 Operator’s Manual
Index Index A Adapter, quick disconnect 1-21 AFRM 3-23, 6-8 Almanac 2-1 broadcast data 2-26 collect 4-6 definition 2-26 update 2-26, 5-20, 6-4 Always append to file 3-23 Antenna radio modem 6-13, 6-14 Antenna reference point 4-4 See also ARP Antenna, external 1-17 ARP 4-4 Automatic file rotation mode 3-23 B Base configuration RTK 3-14 static 3-14 Base receiver, definition 3-1 Base station 4-2 configuration 3-11–3-19 definition, RTK 3-10 definition, static 3-10 power 1-9 setup 4-2, 4-11 BATT LED 2-14 See a
Index Clear NVRAM 5-20 Configure Bluetooth module 2-22 GSM modem 3-7 MINTER 3-21 SS modem 3-3, 3-6 Connect receiver to computer unable to connect 2-20 using Bluetooth 2-20 using PC-CDU 3-11 using RS232 cable 2-21, 2-22 using USB cable 2-21 Connector 1-17 quick disconnect 1-21 Controller 1-22 Coordinate output 4-12 GSM 4-12 spread spectrum 4-12 Cradle See Charging Cradle D Data recording auto-start 3-25 Data, save to SD card 2-7 Delete files 5-8 Delimiter 5-14 DGPS 1-4 post-mission 1-4 real-time 1-4 Differ
Index GR-3 kit 4-2, 4-3 cables 1-19 modem antenna 1-20 power supply 1-20 quick disconnect 1-21 SD card 1-20 setup Base 4-2 setup Rover 4-3 tribrach 1-21 GSM modem 1-10 antenna 1-20 configuration 3-7–3-9 information 3-9 RX TX LED 1-13 signal quality 3-9 GSM usage 3-7, B-1 GSM, and SIM card 2-7 H Horizontal spacer 1-22, 4-2 part number 1-22, 4-2 I Information mode EIM 5-14 sleep 5-16 STAT LED 5-14 Initial data collection dynamic mode 3-25 Install BTCONF 2-4 FLoader 2-6 Modem-TPS 2-3 PC-CDU 2-2 SD card 2-7
Index O R OAF 1-23 update almanac 2-26 Offsets 4-5 horizontal 4-5 internal antenna 4-4 vertical 4-5 OmniSTAR, DGPS overview 1-4 Operating times 1-8 Option authorization file See OAF Radio configuration 3-3 RAM file 5-18, 5-19 Real-time 1-4 REC LED and FUNCTION button 1-13 blink pattern 1-12, 1-13 Receiver modes 5-14 See also EIM See also Normal Mode extended 5-14–5-15 sleep mode 5-16 Recording interval 3-22 Rover 4-3 configuration 3-11–3-19 definition, RTK 3-10 definition, static 3-10 kinematic setup 4-
Index SS modem antenna 1-20 SS modem configuration 3-3–3-6 SS modem, FH915 vs FH915+ 3-4 STAT LED 1-11, 5-14 blink pattern 1-11, 5-14–5-15 EIM 5-14 green 1-11 orange 1-11 red 1-11 Static survey 4-10 Static survey, definition 3-10 Stop and Go survey 4-11 configuration 4-11 definition 4-11 Surveying static 4-10 stop and go 4-11 T Test 5-14, B-3 EIM 5-14–5-15 Tribrach 1-21 Tribrach, precision 1-22, 4-2 U UHF modem 1-10 antenna 1-20 Unable to connect 2-20 Uninstall BTCONF 2-5 FLoader 2-6 Modem-TPS 2-4 PC-CDU
Notes: Index GR-3 Operator’s Manual
Topcon Positioning Systems, Inc. 7400 National Drive, Livermore, CA 94551 800∙443∙4567 www.topcon.com ISO 9001:2000 FM 68448 GR-3 Operator’s Manual P/N: 7010-0736 Rev A 06/06 300 ©2006 Topcon Corporation All rights reserved. No unauthorized duplication.
