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GPS Receiver System GSR2700 IS Operations Manual...
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GPS Receiver System Tplljb GSR2700 IS Operations Manual Part Number 750-1-0055 Rev 0D...
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Trademark Notice SOKKIA® and Spectrum® are registered trademarks of SOKKIA Co. Ltd. SDR® is a registered trademark of POINT, Inc. The Bluetooth® word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by POINT, Inc.
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This change is not included in the present manual. GSR2700 IS FCC and CE Notice Replace the GSR2700 IS FCC and CE Notice located at the beginning of the manual (on the back of the title page) with the following: This device complies with CISPR 22 Class B.
Contents Chapter 1 Introduction About the GSR2700 IS ..........1 Features ..............2 System Components ..........3 Usage Cautions ............6 Icons .................7 Document Conventions ..........8 Finding More Information..........8 Obtaining Technical Assistance .......9 Chapter 2 GSR2700 IS Components Enclosure Features ..........10 Ports ...............12 2.2.1 Antenna port............
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Charging the Internal Batteries ......46 Operation Overview ..........46 Chapter 6 Collecting Data How Data is Stored ..........48 Data Collection Methods ........48 6.2.1 Handheld data collection ........48 6.2.2 Logging to the internal memory ......49 GSR2700 IS Operations Manual...
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Defining Data to be Collected .........49 6.3.1 About the POWERUP configuration....49 6.3.2 Default POWERUP configuration....... 50 6.3.3 Transferring a POWERUP configuration.... 52 Data File Naming ............53 Data Storage Capacity ...........54 Resetting the Receiver ...........54 Appendix A Technical Specifications Glossary Index GSR2700 IS Operations Manual...
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Tables GSR2700 IS Feature Summary ......... 2 Icon Summary ..............7 Port Summary ..............13 Display Panel Components ..........19 Power Button Functions ........... 21 COM Port Communication Status LEDs......24 Wireless Communication Status LEDs......25 Internal Radio Status LEDs ..........26 Battery Life Gauge Indicators ...........
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Ports and Labels ...............12 Internal Radio Antenna .............13 GPS Antenna ..............16 Display Panel Components..........19 Power Button Functions............21 Typical RTK Rover Setup ..........36 Typical RTK Base Setup (internal radio)......38 Typical RTK Base Setup (external radio)......38 Typical Static Setup ............40 GSR2700 IS Operations Manual...
Surveyors can use the GSR2700 IS for topographic, stake out, and control surveys. Excellent acquisition and reacquisition times mean this receiver continues to excel in environments where signal obstructions are present and frequent interruptions of signals can be expected.
Chapter 1 Introduction Features The GSR2700 IS is capable of the following modes of operation: • Static post-processing • Stop-and-go kinematic post-processing • RTK base operation • RTK rover operation • Navigation • Differential GPS GSR2700 IS features are summarized in Table 1. For detailed technical information, see Appendix A, Technical Specifications, page 55.
Computed Data: Position, speed, direction, & clock offset = 20 Measured Data (Observations): Pseudorange & carrier phase = 20 System Components When you receive your GSR2700 IS system, ensure you have received all of the components for your specific configuration (rover or base).
Chapter 1 Introduction Internal Radio Antenna GPS Receiver Quick Release PC Download Cable (USB) AC Adapter Tape Measure Manual Hard Case GPS Receiver System GSR2700 IS Operations Manual Figure 1: Standard System Components: RTK Rover GSR2700 IS Operations Manual...
Figure 2: Standard System Components: RTK Base Figure 3 illustrates optional components that you may also wish to use with your system. PC Download Cable (Serial) Data Collector Mounting Bracket Data Collector External Battery External Battery Cable Figure 3: Optional Components GSR2700 IS Operations Manual...
To minimize the possibility of damage, always keep the ports covered except when in use. • The GSR2700 IS can accept an input supply voltage in the range of +9 to +18 VDC. Do not operate the receiver outside the specified voltage range.
Introduction Chapter 1 Icons The GSR2700 IS uses the display panel and port icons summarized in Table 2. Table 2: Icon Summary Icon Meaning Description & Task Display Panel LEDs Battery life Identifies the gauge that displays the available internal and external battery power.
Finding More Information This manual provides the information you need to use the GSR2700 IS. The following documents provide supporting documentation: • Planning Reference Manual. Describes how to use Planning software to help determine satellite availability, as well as information about setting the POWERUP configuration for the GSR2700 IS.
• Your receiver information, including: serial number, part number, model, firmware version, and internal radio information • A concise description of the problem For a list of SOKKIA worldwide offices, see the list at the back of this manual. GSR2700 IS Operations Manual...
Enclosure Features The top of the GSR2700 IS is comprised of the GPS antenna and radome, surrounded by a shock-absorbing protective bumper. On the side of the receiver is the display panel, which enables you turn on and monitor the system.
Section 2.2, Ports, page 12. Figure 5: Ports The underside of the GSR2700 IS enclosure has a standard 5/8” survey mount, compatible with a standard quick release fitting, for mounting the unit on a tripod or survey pole. The mounting socket accepts a threaded stud up to 0.75”...
17. Figure 7: Wireless Communication Antenna Ports The GSR2700 IS features an external power input port, two communication ports, and an antenna connector port for the internal radio. All ports are located on the underside of the enclosure and are protected from dust and water by covers.
Power port 2.2.1 Antenna port The GSR2700 IS has an external TNC antenna connector for an internal UHF or GSM radio (if installed). See Figure 9 for a view of the receiver with radio antenna attached. For more information about the internal radio, see Section 2.7, Internal Radio, page 17.
Section 5.3, Powering Peripheral Devices, page 44. Cables Each GSR2700 IS cable connector is keyed to ensure that the cable can be inserted in only one way, to prevent damage to both the GSR2700 IS and the cables. In addition, the connectors that are used to secure the cables to the receiver have a latching mechanism that requires careful insertion and removal.
Do not pull directly on the cable. Batteries The GSR2700 IS incorporates two internal custom Li-Ion battery packs. The GSR2700 IS can also be powered using an external power source. See Section 5.2, Power Source, page 42 for more information about power input.
Chapter 2 GSR2700 IS Components Memory The GSR2700 IS comes standard with 64 MB of internal memory to support post-processing applications. For information about how many hours of data can be stored in memory, see Section 6.5, Data Storage Capacity, page 54.
See Radio Link, page 58 for details about the UHF and GSM/ GPRS internal radios. Wireless Communication The GSR2700 IS features a built-in Class 2 Bluetooth wireless communication device, which enables a wireless connection from a Bluetooth-enabled data collector or a PC.
Chapter 2 GSR2700 IS Components Display Panel The GSR2700 IS has an easy-to-use display panel with single- button operation and LED display indicators that give you a view of your system status. See Chapter 3, Display Panel Operations, page 19 for details about display panel features and how to use them.
Display Panel Chapter 3 Operations The GSR2700 IS LED display panel provides receiver health information, including battery life, memory available, satellites tracked, and port and radio activity. In addition to the visual display, a series of voice messages or sounds alert you to receiver status and event conditions.
See Section 3.4, Audible Annunciator, page 31 for more information about voice messages and sounds. NOTE Ensure that you hold the power button firmly for the entire duration that is required to perform the desired action. GSR2700 IS Operations Manual...
Turn off Hold the button for 3 seconds until the “Power Off” message or sound is issued and the top three battery life gauge indicators illuminate. Release the button to turn off the receiver. GSR2700 IS Operations Manual...
Status Indicators The GSR2700 IS display panel features status indicators to provide information about the following: • Receiver health (Section 3.2.1, Receiver health, page 23) • COM port communication status (Section 3.2.2, COM port...
If it is, let it cool down and perform another factory reset. If the error condition is not resolved, contact your local Sokkia distributor. NOTE Make note of the sequence of flashes and provide this information to your Sokkia distributor, to assist in identifying the problem. GSR2700 IS Operations Manual...
See Table 6 for a description of the COM port communication status LEDs. Table 6: COM Port Communication Status LEDs State Status Description Illuminated Data is being received by the GSR2700 IS via the COM port. Dark No data is being received via the COM port. Green Illuminated Data is being transmitted from the GSR2700 IS via the COM port.
A Bluetooth connection has been established with another device (for example, a data collector). Dark The internal Bluetooth device is powered off. Blinking Data is being received by the GSR2700 IS via the Bluetooth port. Dark No data is being received via the Bluetooth port. Green...
Power is being provided to the internal radio device. Dark The internal radio is powered off. Blinking Data is being received by the GSR2700 IS via the internal radio device. Dark No data is being received via the internal radio device.
Display Panel Operations Chapter 3 Gauges The GSR2700 IS display panel features four gauges to provide information about the following: • Battery life and charging status (Section 3.3.1, Battery life gauge, page 27) • Satellites currently being tracked (Section 3.3.2, Satellite tracking gauge, page 28) •...
RTK base operation, the currently illuminated LED will blink. For a satellite to be counted as used, it must have a healthy signal and be above the elevation mask, and the receiver must have achieved lock (both code and carrier). GSR2700 IS Operations Manual...
When data is being logged to a file, the currently illuminated LED blinks. Table 11 summarizes the values indicated by each LED. Table 11: Memory Gauge Indicators Available Memory (%) 80 to 100 60 to 80 40 to 60 GSR2700 IS Operations Manual...
10 seconds. Table 12 summarizes the values indicated by each LED. Table 12: Occupation Timer Gauge Indicators Baseline Length (km) up to 30 up to 20 GSR2700 IS Operations Manual...
If you are uncertain about the quality of the data collected, log data for a longer period of time. Audible Annunciator The GSR2700 IS is equipped with an audible annunciator, which issues a series of voice messages or sounds to alert you to the system status and event conditions.
Memory Low The remaining memory is less than 15 continuous minutes under the current logging conditions. When the memory is full, data will no longer be stored. GSR2700 IS Operations Manual...
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A file is open for data logging on the continuous receiver, but the memory is full and new data can no longer be stored. RTK Fixed A fixed-integer RTK solution has been once achieved. Fix Lost A fixed-integer RTK solution has been once lost. GSR2700 IS Operations Manual...
GSR2700 IS. Setting Up at the Office An office setup can be used to configure the GSR2700 IS or to transfer collected data from the receiver to a PC. The GSR2700 IS supports transfer of data from the receiver’s memory to a PC in the following ways: •...
Spectrum Survey) to transfer data to the PC. Setting Up for Field Operations The GSR2700 IS can be used for static or kinematic surveys, as well as for real-time kinematic (RTK) surveys as a base or rover. This section provides an overview of the equipment and setup for typical uses of the system.
Data Collector Mounting Bracket Range Pole Figure 13: Typical RTK Rover Setup For RTK rover setup, complete the following steps: Mount the GSR2700 IS on the pole. NOTE Position the receiver with the GPS antenna up and the mounting socket down.
4.2.2 Typical RTK base setup A typical RTK base station setup consists of a tripod and the GSR2700 IS receiver with internal UHF or GSM/GPRS radio. The setup might also include a data collector for in-field configuration of the receiver.
Receiver Internal Radio Antenna Tribrach Adapter Tribrach Tripod Figure 14: Typical RTK Base Setup (internal radio) GSR2700 IS Receiver External Radio Cable Tribrach Adapter Tribrach Tripod External Radio Figure 15: Typical RTK Base Setup (external radio) GSR2700 IS Operations Manual...
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System Setup Chapter 4 For RTK base setup, complete the following steps: Mount the GSR2700 IS on the tripod. NOTE Position the receiver with the GPS antenna up and the mounting socket down. If you don’t plan to use a data collector in the field, ensure you have the appropriate POWERUP configuration loaded onto the receiver (see Chapter 6, Collecting Data, page 48).
If you are using SDR+ software and have a valid RTK-capable POWERUP configuration loaded on your receiver, you do not need to connect GSR2700 IS to a data collector to use the receiver as a base. See the SDR+ User’s Guide for more information.
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For a static survey, complete the following steps: Ensure you have the appropriate POWERUP configuration loaded onto the receiver (see Chapter 6, Collecting Data, page 48). Mount the GSR2700 IS on the tripod. NOTE Position the receiver with the GPS antenna up and the mounting socket down.
This chapter describes how to power your GSR2700 IS and describes basic receiver operations. NOTE Before using the GSR2700 IS for the first time, ensure that you have followed the setup instructions in Chapter 4, System Setup, page 34. Turning the System On and Off The GSR2700 IS has a power button that, when pushed, turns the receiver on or off.
For information about charging the internal batteries, see Section 5.6, Charging the Internal Batteries, page 46. 5.2.2 External power source In addition to using the internal batteries, the GSR2700 IS can be powered using an external battery according to the recommendations in this section. NOTE...
COM1 would not usually provide power. If the peripheral devices attached to the GSR2700 IS try to draw too much power from the battery output, the receiver will limit the available current to prevent damage to the receiver. Once the excessive load is removed, normal operation of the system will resume.
In the event of a power failure, the GSR2700 IS power output is disabled on both COM ports and the receiver will not resume operations even if the power button is pressed.
The following is a list of general operations when using the GSR2700 IS receiver: Apply power to the GSR2700 IS (that is, ensure its internal batteries are charged or connect it to an external power supply). Once the GSR2700 IS is connected to an appropriate power supply, it is ready to use.
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Connect a data collector to the receiver if you plan to use it to configure the receiver or control the survey. A data collector is not always necessary (for example, you are using the receiver as an RTK base or in a static survey). GSR2700 IS Operations Manual...
Chapter 6 Collecting Data The GSR2700 IS enables you to collect data in several ways and, by using the POWERUP configuration, to define the type of information stored during data collection. How Data is Stored The most basic activity you will perform using your GSR2700 IS is collecting raw data, which are recorded in the form of logs.
Logging to the internal memory Turn the receiver on by pressing the power button (see Section 3.1, Power Button, page 20). Once the GSR2700 IS has acquired GPS satellites, it will automatically start collecting data based on the POWERUP definitions (see Section 6.3.1, About the POWERUP configuration, page 49).
Planning software. There are several default POWERUP configurations available for the GSR2700 IS. Your receiver is preset with one of five possible POWERUP configurations. Table 14, POWERUP Configurations, page 51 summarizes the factory setup for each.
(secs) Differential RTCM RTCA RTCA RTCA correction format 18/19 Default base ID AAAA AAAA AAAA Correction transmit interval (secs) Base position transmit interval (secs) Corrections to internal radio if present Corrections to external COM2 Peripheral Power GSR2700 IS Operations Manual...
When you reset the receiver back to factory defaults, any POWERUP configuration you have transferred to the receiver is discarded, and the POWERUP configuration reverts to the factory default settings (see Section 6.6, Resetting the Receiver, page 54). GSR2700 IS Operations Manual...
Session ID assigned in sequence (0..9, A..Z) based on the presence of files previously logged on a particular day. For example, a GSR2700 IS might have a serial number such as NZH05410087. If the day is January 25 (025 UTC day of the year), and this is the 15th session created that day (session ID E), the file name would be 0087025E.PDC.
(see Section 3.1, Power Button, page 20) restores the default factory POWERUP configuration. The receiver audibly indicates that a reset has occurred. For more information, see Section 3.4, Audible Annunciator, page 31. NOTE Data files on the receiver are not affected by a reset. GSR2700 IS Operations Manual...
Technical Appendix A Specifications Table 17 summarizes the GSR2700 IS specifications. NOTE Specifications are subject to change without notice. Table 17: GSR2700 IS Technical Specifications Physical Size (diameter x 22.5 cm x 10.5 cm (8.9 in x 4.1 in) height) Weight Without internal radio: 1.6 kg (3.5 lbs)
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Profile)<from Radian IS manual; this section needs to be confirmed or updated> The GSR2700 IS can acquire and track satellites while undergoing vibration levels as shown below. It assumes that C/No > 45 db-Hz and that the GSR2700 IS is in high-dynamics mode. Assuming appropriate mounting, the...
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Appendix A Table 17: GSR2700 IS Technical Specifications (continued) Performance (Subject to GPS System Characteristics) Frequency 1575.42 MHz (L1) & 1227.60 MHz (L2) Channels 12 x L1 and 12 x L2 with full code and carrier Time to First Fix (TTFF) •...
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Appendix A Table 17: GSR2700 IS Technical Specifications (continued) Memory Memory • Internal: 64 MB standard • Optional: up to 2 GB Memory Life 500 hours at 10-second interval (6 satellites) Internal Batteries Capacity 2200 mAh Voltage 10.8 VDC Chemistry Li-Ion Operating Time 20°C...
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Class B digital device, for both CISPR and Part 15 of the FCC Rules. For full details, see GSR2700 IS FCC and CE Notice, page ii. a. Shock specifications based on receiver without cables attached. b. Typical value. No almanac or ephemeris and no approximate position or time.
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Appendix A h. Based on unobstructed observing conditions, 7 satellites, and a baseline length of less than 5.0 km. See your local Sokkia distributor for more information. See your local Sokkia distributor for more information. GSR2700 IS Operations Manual...
(also known as integrated Doppler). Circular Error Probable (CEP)—The radius of a circle, centered at your true location, that contains 50% of the individual position measurements made. GSR2700 IS Operations Manual...
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Ephemeris—A set of satellite orbit parameters used by a GPS receiver to calculate precise GPS satellite positions and velocities. The ephemeris is used in the determination of the position solution and is updated periodically. Available as “broadcast ephemeris” or as post- processed “precise ephemeris”. GSR2700 IS Operations Manual...
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19.000 sec. The IAT and Universal Time Coordinated (UTC) are closely related. The difference is that UTC contains leap seconds to adjust for changes in the earth’s rotation. See Universal Time Coordinated (UTC). Integer ambiguity/bias—See Ambiguity. Integrated Doppler—See Carrier phase. GSR2700 IS Operations Manual...
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In other words, these are errors caused by the interaction of the GPS satellite signal and reflections. NMEA—National Marine Electronics Association, an organization that created an industry standard ASCII log types used by many receivers. GSR2700 IS Operations Manual...
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RTK survey. The receiver does not know its position and needs to receive measurements from a base station to calculate differential GPS positions at each point. Root-Mean-Square (RMS)—A statistical measure of the scatter of computed positions about a “best fit” position solution. GSR2700 IS Operations Manual...
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13 second offset between GPS time and UTC at the start of 1999. However, after accounting for leap seconds and using adjustments contained in the navigation message, GPS time can be related to UTC to within 20 nanoseconds or better. GSR2700 IS Operations Manual...
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Earth as much as possible. It is often used as a reference on a worldwide basis, while other coordinate systems are used locally to provide a better fit to the Earth in a local region. GSR2700 IS Operations Manual...
COM ports, 14, 24 erasing the memory, 22 communication error conditions, 23 ports, 14, 24–25 external battery, 14–15, 43 status indicators, 24–25 wireless. See wireless communi- cation components, 3–5, 10–18 factory reset, 22, 54 features summary, 2 GSR2700 IS Operations Manual...
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12–13 interruptions, 42 power, 14 memory capacity, 54 status indicators, 24 rates, 3 post-processing data, 34–35 to internal memory, 49 power consumption, 44 input, 14–15, 43 insufficient, 45 maximum current, 6 output, 14, 44 GSR2700 IS Operations Manual...
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SIM card, 17 socket, mounting, 11 sounds. See audible annunciator specifications, 55–60 startup sequence, 21 static setup, 40 status indicators, 22 storage of data, 48, 54 support, technical, 9 system components, 3–5, 10–18 system setup. See setup GSR2700 IS Operations Manual...
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<CE declaration document not yet available>...
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SOKKIA has been delivering superior products, sales and support around the world since 1920. You can find an authorized SOKKIA representative in nearly every region of the globe. For customer service, we recommend that you contact your local SOKKIA distributor. If you need assistance locating a distributor in your area, please contact the appropriate SOKKIA worldwide office listed below.
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Web: www.sokkia.com SOKKIA Corporation Canada Mississauga, Ontario, Canada Ph: +1 905-238-5810 Fax: +1 905-238-9383 E-mail: support@sokkiacorp.com Web: www.sokkiacanada.com SOUTH KOREA SOKKIA Korea Co. Ltd. Seoul, Republic of Korea Ph: +82-2-514-0491 Fax: +82-2-514-0495 E-mail: sokkia@sokkia.co.kr Web: www.sokkia.co.kr TAIWAN Meridware Co., Ltd.
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