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P O S I T I O N I N G S Y S T E M S BR-1 Operator’s Manual Part Number 7010-0796 Rev A ©Copyright Topcon Positioning Systems, Inc. March, 2007 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#2978
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 BR-1 Control Center onto a Computer ............ 2-5 Configuring the BR-1 ....................................................... 2-6 Bluetooth Module Configuration ..................................... 2-8 Chapter 3 Surveying with the BR-1 ..................................... 3-1 BR-1 Surveying with the GMS-2 ..................................... 3-2 BR-1 Surveying with an External GPS Receiver ............. 3-3 Chapter 4 Troubleshooting ....................................
Table of Contents Appendix C Safety Warnings ................................................... C-1 General Warnings ........................................................... C-1 Battery Pack Warnings .................................................. C-1 Usage Warnings .............................................................. C-2 Appendix D Regulatory Information ........................................ D-1 FCC Compliance .............................................................
Table of Contents Notes: iv BR-1 Operator’s Manual
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 GMS-2, GMS Tools, BTManager, TopSURV, TopPAD, HiPer, Topcon and Topcon Positioning Systems are trademarks or registered trademarks of TPS. Microsoft, Windows, ActiveSync, and the Windows logo are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. 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.
Terms and Conditions non-transferable license to use such Software under the terms stated herein and in any case only with a single receiver or single computer. 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.
Preface MISCELLANEOUS The above Terms and Conditions may be amended, modified, superseded, or canceled, 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. Manual Conventions This manual uses the following conventions: Example Description File Exit Connection Frequency Enter NOTE TIP NOTICE CAUTION viii Click the File menu and click Exit.
Manual Conventions WARNING DANGER P/N 7010-0796 Notification that an action will result in system damage, loss of data, loss of warranty, or personal injury. Under no circumstances should this action be performed.
Preface Notes: x BR-1 Operator’s Manual
Chapter 1 Introduction The BR-1 is a receiver that detects radio beacon signals, and is built to be the most advanced, compact, and portable receiver for the GIS surveying market. The BR-1 receiver is a single-function, single-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 digital information (ephemerides, almanacs, time&frequency corrections, etc.).
Introduction Calculating Differential Positions DGPS, or Differential GPS, typically uses the measurements from two or more remote receivers to calculate the difference (corrections) between measurements, thus providing more accurate position solutions. With DGPS, one receiver is placed at a known, surveyed location and is referred to as the reference receiver or base station. Another receiver is placed at an unknown, location and is referred to as the remote receiver or rover.
Principles of Operation Essential Components for Quality Surveying Achieving quality position results requires the following elements: • Accuracy – The accuracy of a position primarily depends upon the satellite geometry (Geometric Dilution of Precision, or GDOP) and the measurement (ranging) errors. – Differential positioning (DGPS and RTK) strongly mitigates atmospheric and orbital errors, and counteracts Selective Availability (SA) signals the US Department of Defense transmits with GPS signals.
Introduction Coastal Navigation Beacons DGPS Service Throughout the world, a number of coastal radio beacon networks have been established to improve the accuracy of maritime navigation around harbors and critical waterways. These beacon networks provide correction information to GIS users with the proper equipment. Since beacon stations act as the known reference point, the repetitive set up, survey, and configuration of a base station has been eliminated.
Getting Acquainted with the BR-1 signals. The BR-1 then chooses the optimal beacon station, then exports the correction data from the station. Getting Acquainted with the BR-1 The BR-1 is a beacon receiver. A serial port with Bluetooth® wireless technology provides communication paths with other devices.
Introduction The battery provides fifteen hours of operation, depending on the mode of the receiver. Battery Figure 1-2. GMS-2 Battery BR-1 MINTER The Minimum INTERface for the BR-1 turns on the receiver and has LEDs to monitor battery status and communication status. • The power button turns the receiver on and off. • The status LED indicates the status of the beacon signal: – Green blink: receiving a beacon signal, where each blink indicates a detected beacon station.
Getting Acquainted with the BR-1 • The Bluetooth LED indicates the level of activity at the Bluetooth wireless technology module: – Blue blink: the module is on and a connection has been established. – Slow Blue blink: waiting for a connection. Power Button Signal Status LED Battery Status LED Bluetooth Status LED Figure 1-3. BR-1 MINTER BR-1 Ports The BR-1 has the following two ports: • Serial – used for communication between the internal beacon module (port A of the module) and an external device.
Introduction Power Serial (port A) Figure 1-4. BR-1 Ports Carry Case and Belt The carry case for the BR-1 has soft sides for comfort and is attached to an adjustable comfort-belt. The top of the case is clear for easy access to the MINTER. The case is waterproof. Figure 1-5.
System Cables System Cables The standard BR-1 package includes communication and power cables (Table 1-1). Table 1-1. BR-1 Package Cables Cable Description Cable Illustration AC Power cable and adapter Connects the BR-1 to a grounded outlet. Serial cable Connects the BR-1 to a computer for high-speed data transfer and receiver configuration.
Introduction Optional Accessories Table 1-2 gives a brief list of optional accessories that can be used with the GMS-2. For more details on accessories and package options available for the BR-1, contact your local Topcon dealer. Table 1-2. GMS-2 Optional Accessories Accessory Illustration External Battery Charger Connects to an outlet to charge the battery outside the unit. Extra Battery Provides a backup source of power. Be sure to turn off the unit before switching batteries.
Chapter 2 Preparing the BR-1 for Use Before using the BR-1, check that its battery is fully charged. While the BR-1 is ready to use without needing to be configured, perform any configurations in the office and prior to performing fieldwork. Powering the BR-1 The BR-1 uses a BT-62Q battery for it’s primary power source. The battery will last up to fifteen hours during continuous use. Charging the Battery The AC/DC converter provides power to the BR-1 and charges the battery.
Preparing the BR-1 for Use The power LED indicates the level of charge in the battery: During Use • Green blink: battery has a full charge (more than 80%). During Charge • Fast blink: battery is charging. • Solid Green: battery is fully charged. • Yellow blink: intermediate charge. • Red blink: battery requires charging (less than 20%). To Grounded Outlet Figure 2-1.
Powering the BR-1 To Grounded Outlet Figure 2-2. Charging the Battery in the Charger Charging and Battery Storage Notes Keep the following in mind for proper charging, maintenance, and storage of the battery. • Only recharge the battery at room temperature, approximately 50°F to 104°F (10°C to 40°C). Charging at a high temperature will increase the time it takes to charge the battery. • The battery will discharge during storage. Always check the battery charge before using the BR-1.
Preparing the BR-1 for Use Follow these steps to remove/replace the battery (Figure 2-3 on page 2-4). 1. Open the battery cover. If needed, pull out the shelf to remove the (discharged) battery. 2. Insert a fully charged battery, sliding it into place. Then close the battery cover. TIP If the battery cover does not close, rotate the battery 180° to snap it into place. Battery shelf pulled out Figure 2-3.
Starting the BR-1 Starting the BR-1 To start the BR-1, briefly press the power button. The LEDs light up. Press Power to Start Figure 2-4. Press Power to Start the BR-1 Once the unit is turned on it begins to search for beacon signals and outputs correction information via the serial or Bluetooth port. Installing BR-1 Control Center onto a Computer The BR-1 Control Center is a utility software used to configure the BR-1. This software installs onto a desktop computer or notebook computer.
Preparing the BR-1 for Use Configuring the BR-1 The BR-1 default settings are the automatic mode settings. The BR-1 searches for a signal, then automatically produces the RTCM correction from that signal, without special settings. The BR-1 can use its default settings, without changing parameters, for the majority of its use. The following steps describe how to change the parameters to receive specific frequencies. For details on the BR-1 Control Center, see Appendix A. 1. Turn on the BR-1. 2.
Configuring the BR-1 4. Configure Channel A for specific frequency setup. • Frequency channel: Select desired frequency • Frequency scanning mode in case of signal loss condition: Check “Stay” • Frequency scanning mode after beacon signal was found: Select “Stay” 5. Click Apply to save the settings. Figure 2-7. Select Channel Information 6. Configure the Ports for RTCM output settings. • RTCM Settings: Enable Channel A. Figure 2-8. Configure RTCM Settings 7.
Preparing the BR-1 for Use NOTICE You must click Disconnect to prevent port communication problems with the computer. Figure 2-9.
Bluetooth Module Configuration Each time you run BTCONF and configure the Bluetooth module, BTCONF saves your settings in a file (btconf.ini). BTCONF automatically updates the file each time you make changes to the Bluetooth module’s settings. To maintain unique Bluetooth module settings for different purposes, keep copies of BTCONF in separate folders. TIP To uninstall BTCONF, delete any applicable BTCONF directories or folders, and any BTCONF shortcuts.
Preparing the BR-1 for Use 3. From the drop-down list in the upper left corner, select the computer serial port (usually COM1) used for communication (Figure 2-11). 4. Click Connect to connect the computer and Bluetooth module (Figure 2-11). Figure 2-11. Select Communication Port and Click Connect Once the receiver and computer connect through BTCONF, the Identification tab (Figure 2-12) displays the following information: • Bluetooth name – the name of the Bluetooth module.
Bluetooth Module Configuration Figure 2-12. BTCONF Identification Tab 5. Click the Parameters tab (Figure 2-13 on page 2-11). 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 2-13), and click Apply. Figure 2-13. BTCONF Parameters Tab 7.
Preparing the BR-1 for Use • Encryption – enable to have the Bluetooth module encrypt wirelessly sent data. To read encrypted data, the user must have the same PIN used in the device that sent the data. • Authentication – enable to require a PIN before two Bluetooth enabled devices (such as, the receiver and a computer) can establish a communication link. The two devices must use the same PIN. NOTICE If you do not need security settings, leave these parameters disabled. Figure 2-14.
Bluetooth Module Configuration Figure 2-15. BTCONF Serial Interface Tab 9. Click Disconnect then Exit (Figure 2-16) to quit BTCONF. Figure 2-16.
Preparing the BR-1 for Use Notes: 2-14 BR-1 Operator’s Manual
Chapter 3 Surveying with the BR-1 The BR-1 can be used as a stand-alone Beacon receiver, with Topcon’s GMS-2, or with an external GPS receiver to provide correction data. The BR-1 provides direct connection to devices via a serial port or Bluetooth wireless technology.
Surveying with the BR-1 BR-1 Surveying with the GMS-2 When surveying with the BR-1 in a GMS-2 configuration, the Beacon receiver provides DGPS correction data from the Beacon station. 1. Complete any required set up steps for the BR-1 as described in Chapter 2. 2. In the field, turn on the BR-1. • If using a serial connection, make sure to connect the optional GMS-2-to-BR-1 serial cable to both devices.
BR-1 Surveying with an External GPS Receiver BR-1 Surveying with an External GPS Receiver When surveying with the BR-1 in an external GPS receiver configuration, the Beacon receiver provides DGPS data correction to the GPS receiver. When using this system configuration with a data controller, make sure to connect the BR-1 and GPS receiver using a port other than the one used for the controller. 1. Complete any required set up steps for the BR-1 as described in Chapter 2. 2.
Surveying with the BR-1 Notes: 3-4 BR-1 Operator’s Manual
Chapter 4 Troubleshooting This chapter will help you diagnose and solve some common problems you may encounter with the BR-1. 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 connections (cable and wireless). • Check all power sources for drained batteries or incorrectly connected batteries/cables.
Troubleshooting Troubleshooting Quick List To reset the hardware, see “Resetting the Beacon Receiver” on page 4-2. For power problems: If “The BR-1 does not power up.” see page 4-3. For general BR-1 problems: If “The BR-1 is not receiving data (corrections) from a Beacon station.” see page 4-3. If “The BR-1 is not transmitting data (corrections).” see page 4-4. For Bluetooth problems: If “Cannot connect to BR-1 via Bluetooth.” see page 4-4. If “The BR-1 is no longer connected via Bluetooth.” see page 4-4.
Charging/Powering Problems Charging/Powering Problems The BR-1 does not power up. D The batteries may be discharged. • Connect the BR-1 to a grounded outlet to charge the battery. See “Charging the Battery” on page 2-1. • Insert a fully charged battery. See “Installing the Battery” on page 2-3. D The charging cable may be disconnected or damaged. Check that the cable is securely connected and undamaged. D The BR-1 may have a defective charger or defective internal battery.
Troubleshooting The BR-1 is not transmitting data (corrections). D Check the Bluetooth LED. The LED will be blue when a connection has been established. D Check the serial cable connections. The connectors should be securely plugged in. D Check that the port settings (Port A and Port B) are setup as RTCM output mode. Bluetooth Problems The following are some of the most commonly encountered problems with the BR-1. Cannot connect to BR-1 via Bluetooth. D Check the Bluetooth setting.
Obtaining Technical Support Phone To contact TPS Customer Support by phone, call: 1-866-4TOPCON (1-866-486-7266) Monday through Friday 5:00am to 5:00pm, Pacific time E-mail To contact TPS Customer Support via e-mail, use one of the following electronic mail addresses (Table 4-1). Table 4-1. Technical Support E-mail For Questions Related To... Hardware (receivers, antennas, firmware) Use... hardware@topcon.com GPS+ and 3DMC psg@topcon.com OAF options@topcon.com RTK rtk@topcon.
Troubleshooting Generally, a customer support representative will reply within 24 hours, depending on the severity of the problem. 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 BR-1 Control Center Software Reference BR-1 Control Center is a simple utility that connects to the internal modules of the BR-1 for unit configuration and unit details. Table A-1 summarizes the screens and settings in BR-1 Control Center. Table A-1. BR-1 Control Center Quick Reference Connect Connect to the BR-1 by pressing the Connect button. Select your connected port number. The software automatically searches for the proper baud rate and connects to the desired rate.
BR-1 Control Center Software Reference Table A-1. BR-1 Control Center Quick Reference (Continued) About This screen displays current firmware versions for the receiver and power boards. Ports This tab applies settings to the BR-1 ports. The ports have the following default settings: • Port A – serial • Port B – Bluetooth • Port C – power See “Setting up the Ports” on page A-6 for details. Channel A, B, C, D These tabs applies settings to the various channels used to track Beacon transmissions.
Table A-1. BR-1 Control Center Quick Reference (Continued) Almanac Parameters This tab provides settings for selecting the almanac number and its parameters. See “Setting up the Almanac” on page A-9 for details. Power Board and LED Parameters This tab displays information on the current power status. See “Power Board Parameters and Led Parameters” on page A-10 for details. Spectrum Analyzer This tab displays the spectrum input for the Beacon receiver. See “Spectrum Analyzer” on page A-11 for details.
BR-1 Control Center Software Reference General Settings The General Settings screen can restore the parameters to their factory default settings, as well as reset the device. In order to restore or reset, select the desired parameter and click Apply. • Set beacon receiver setup/almanac factory defaults – setup: restores parameter defaults – Almanac: clears almanac information • Reset beacon receiver – Cold: rests receiver firmware, and restores parameters to the factory default.
Connecting to BR-1 Control Center Connecting to BR-1 Control Center The BR-1 uses either a serial port or Bluetooth wireless technology to connect to a computer, and thus to BR-1 Control Center. 1. Connect the BR-1 and a computer using the serial cable. Use the serial cable to connect the BR-1 and a computer. Figure A-2. Connect BR-1 and Computer 2. Start BR-1 Control Center. Select the COM port and rate to connect to the BR-1 and click Connect. 3. Click Disconnect to exit the connection.
BR-1 Control Center Software Reference Setting up the Ports The BR-1 has three ports, two physical ports and one Bluetooth port. By default, the serial port is considered port A, the Bluetooth wireless technology port is port B, and the power port is port C. The Port’s TabSheet displays the port’s current state and mode. 1. After connecting BR-1 Control Center to the BR-1, click the Ports tab. 2. Click Refresh to view the current settings. 3.
Setting up Channels Figure A-4. BR-1 Ports Settings Setting up Channels The BR-1 supports up to four separate channels for tracking a Beacon signal. Each channel has a unique frequency and set up parameters. The channel tabs also show the current status of the parameters. These parameters can be edited. 1. After connecting BR-1 Control Center to the BR-1, click the desired channel tab. 2. Click Refresh to view the current settings. 3. Select the following settings for the channel (Figure A-5 on page A-9).
BR-1 Control Center Software Reference • Frequency channel mode – Select “prog” or “fft.” fft is faster than prog, but prog is more reliable. – Prog: searches the signal carefully with full diapason. – Fft: searches the signal with the Fast Fourier transform method. • Carrier frequency shift estimation method – Select “prog” or “fft.” fft is faster than prog, but prog is more reliable. – Prog: searches the signal carefully with full diapason.
Setting up the Almanac • RTCM state– displays the status of the following: – Norm_op: Operating normally. The receiver receives and sends out RTCM data. – Sync_srch: Receiver is searching for a signal. – Sync_check: Receiver is verifying RTCM messages. – Idle: no signal input or output. 4. Click Apply (Figure A-5 on page A-9). Continue with other set up activities, or click Disconnect on the Connect tab and the close button to quit BR-1 Control Center. Figure A-5.
BR-1 Control Center Software Reference The following can be edited: • Almanac record frequency • Frequency shift • Almanac record default symbol rate (select the possible symbol rate) • Almanac record actual symbol rate 2. Click Apply (Figure A-6 on page A-10). Continue with other set up activities, or click Disconnect on the Connect tab and the close button to quit BR-1 Control Center. Figure A-6.
Spectrum Analyzer Figure A-7. Power Board Parameters Spectrum Analyzer This tab displays the spectrum of the input signal. You can view the correlation peak of the received signal. Define the approximate locking frequency and signal power. Figure A-8.
BR-1 Control Center Software Reference Notes: A-12 BR-1 Operator’s Manual
Appendix B Specifications This TPS product is a 4-channel Beacon receiver with a Bluetooth® wireless technology module. The portable design allows this device to be a fully-functional, productive tool at any job. BR-1 Specifications The following sections provide specifications for the BR-1 and its internal components. General Details Table B-1 table lists the receiver’s general specifications. Table B-1.
Specifications Table B-1. BR-1 General Specifications (Continued) Environment Operating temperature -20 C° to +50 C° Storage temperature -30 C° to +60 C° Waterproof IP66 Shockproof 1m drop Power Internal battery Li-ion, 2200 mAh, 7.4 V; repeatable Operating time No less than 15 hours with fully charged battery External power 1 port Input voltage 8 to 15 V DC (for work) 12 to 15 V DC (for charge battery) Consumption 1.
Connector Specifications Connector Specifications The BR-1 has two port connectors for power and data input/output. Serial Connector The serial connector (Figure B-1) is a sealed receptacle, 5 pin, port. This connector is configured as port A of the internal Beacon receiver. Figure B-1.
Specifications Notes: B-4 BR-1 Operator’s Manual
Appendix C Safety Warnings General Warnings WARNING DANGER 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. • With unauthorized accessories. • Without proper safeguards at the survey site. • Contrary to applicable laws, rules, and regulations.
Safety Warnings DANGER WARNING Do not incinerate or the heat battery above 212° fahrenheit (100° 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. • Do not disassemble the battery pack. • Do not charge in conditions different than specified. • Do not use other than the specified battery charger.
Appendix D 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. Canadian Emission Labeling Requirements 1. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. 2.
WEEE Directive 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. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product.
Regulatory Information Notes: D-4 BR-1 Operator’s Manual
Appendix E 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: E-2 BR-1 Operator’s Manual
Index Index A AC/DC converter 1-11, 2-1 Accuracy 1-6 B Backup battery 1-7 Battery 1-7, 2-1 charge LED 1-8 charging 1-7 charging LED 2-2 discharge 2-3 hardware reset 4-2 install 2-4 optional charger 2-2 Battery performance 2-3 Beacon 1-6 accuracy 1-6 DGPS overview 1-6 Beacon receiver, surveying with 3-2, 3-3 Beacon signal 2-5 Beacon, DGPS overview 1-4 Bluetooth configuration 2-9–2-13 correction information 2-5 security 2-11 Bluetooth LED, blink pattern 1-9 Bluetooth module and BTManager A-1 LED 1-9 BR 2-5
Index GMS-2, overview 1-7 GNSS, definition 1-2 GNSS, overview 1-2–1-5 GPS 1-2 Hardware reset 4-2 correction information 2-5 Serial port 1-9, B-2 communication B-2 port A 1-9, B-3 Software 1-11 Status 1-8 Surveying with Beacon receiver 3-2, 3-3 I T Install BTCONF 2-8 Test C-2 H U L LED Bluetooth 1-9 charging 1-8, 2-2 Uninstall BTCONF 2-9 US Coast Guard 1-6 USB port 1-9 O W OmniSTAR, DGPS overview 1-4 Operating times 1-8 Warnings C-1 battery pack C-1 general C-1 usage C-2 P Port A 1-9, B-3 Por
Topcon Positioning Systems, Inc. 7400 National Drive, Livermore, CA 94551 Phone: 800-443-4567 www.topcon.com ISO 9001:2000 FM 68448 BR-1 Operator’s Manual P/N: 7010-0796 Rev A 03/07 400 ©2007 Topcon Corporation All right reserved. No unauthorized duplication.
