Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, TRIMBLE SHALL NOT BE LIABLE TO YOU FOR ANY INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES OF ANY KIND OR UNDER ANY CIRCUMSTANCE OR LEGAL THEORY RELATING IN ANY WAY TO THE PRODUCTS OR SOFTWARE, REGARDLESS WHETHER TRIMBLE HAS BEEN ADVISED OF THE POSSIBILITY OF ANY SUCH LOSS AND REGARDLESS OF THE COURSE OF DEALING WHICH DEVELOPS OR HAS DEVELOPED BETWEEN YOU AND TRIMBLE. BECAUSE SOME STATES AND JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE ABOVE LIMITATION MAY NOT APPLY TO YOU. IN ANY CASE, TRIMBLE'S SOLE LIABILITY, AND YOUR SOLE REMEDY UNDER OR FOR BREACH OF THIS AGREEMENT, WILL BE LIMITED TO THE REFUND OF THE PURCHASE PRICE OR LICENSE FEE PAID FOR THE PRODUCTS OR SOFTWARE.

Contents

About This Manual

OPERATION

Overview
Introduction. Features. Use and Care. COCOM Limits. 6 6

Setting up the Receiver

Introduction. Parts of the Receiver. Front Panel. Rear Panel. Top Panel. Bottom Panel. Setup Guidelines. Environmental Conditions. Sources of Electrical Interference General Guidelines. Postprocessed Setup. Pole-Mounted Setup. 8. 8. 16 18
5700 GPS Receiver User Guide
Backpack Setup. Other System Components. Radios. Cellular Modems. Antennas. CompactFlash Cards.

General Operation

Introduction. Button Functions. LED Behavior. Logging/Memory LED. SV Tracking LED. Radio LED. Battery 1 LED and Battery 2 LED. Starting and Stopping the Receiver. Logging Data. Logging Internally. Logging to the Trimble Survey Controller Software. Resetting to Defaults. Formatting a CompactFlash Card. Batteries and Power. Operation with the TSC1 Data Collector. Power Output. Firmware.. 47

Configuration

Introduction. Configuring the Receiver in Real Time. Configuring the Receiver Using Application Files. Application Files. Special Application Files. Timed Application Files. Applying Application Files. Storing Application Files. Naming Application Files. 56

Transferring Data

Introduction. Connecting to the Office Computer. Transferring Data. Transferring Files Directly from a CompactFlash Card Deleting Files in the Receiver. Supported File Types. 64 64

Software Utilities

Introduction. GPS Configurator Software. Installing the GPS Configurator Software. Configuring the 5700 Receiver. Configuration Toolbox Software. Installing the Configuration Toolbox Software Creating and Editing Application Files. WinFLASH Software. Installing the WinFLASH Software. Upgrading Firmware. Adding Frequencies for the Internal Radio. 74

APPLICATIONS

Static and FastStatic Surveying
Introduction. Static Surveying. FastStatic Surveying. FastStatic Using a TSC1 Data Collector. Setting up the 5700 for a Static or FastStatic Survey. Automatically Scheduling Static or FastStatic Surveys. 84 86

General Guidelines

Postprocessed Setup
For a postprocessed survey, you only need: the 5700 receiver a Zephyr or Zephyr Geodetic antenna a GPS antenna cable
Other equipment, as described below, is optional. To set up the 5700 receiver for a postprocessed survey: 1. Set up the tripod with the tribrach and antenna adapter over the survey mark. Instead of a tripod, you can use a range pole with a bipod. However, Trimble recommends that you use a tripod. 2. 3. 4. 5. 6. Mount the antenna on the tribrach adapter. Use the tripod clip (Part Number 43961) to hang the 5700 receiver on the tripod. Connect the yellow GPS antenna cable (Part Number 41300-10) to the Zephyr antenna. Connect the other end of the GPS antenna cable to the yellow TNC port on the 5700 receiver. If external power is required, connect a battery with a 0-shell Lemo connection to Port 2 or Port 3 on the receiver.

Figure 2.6

Postprocessed setup
Note Instead of hanging the receiver on the tripod, you can place the receiver in its base case. Run the antenna cable out of the portal in the side of the base case to the antenna so that the case can stay closed while the receiver is running.

Pole-Mounted Setup

To mount the 5700 receiver on a pole, you need to do the following: 1. 2. 3. Mount the eRTK Range Pole antenna (RPA). Mount the 5700 receiver. Mount the TSC1 data collector.
This section provides detailed instructions on each of these three steps. Mounting the Range Pole antenna (RPA) To mount the RPA on the pole: 1. Install the RPA bracket 7.5 cm (3") from the pole top by placing the two pieces together and securing with screws. If you are using a 1" diameter pole, place the bracket inserts inside the bracket before securing. Note You can use a quarter-wave whip (rubber duck) antenna instead of the RPA. 2. Connect the yellow TNC-to-TNC cable (Part Number 41300-02) and route it through the RPA bracket clips where it is labeled on the bracket. Make sure that the right angle connector is at the top. Align the TNC connector on the RPA with the GPS antenna cable on the bracket, and slide the RPA onto the bracket until it clicks.

GPS antenna cable

TNC port (aligned over antenna cable)

BLE O N O

RPA bracket

Figure 2.7

RPA and bracket

4. 5. 6.

Mount the Zephyr antenna on the range pole. Connect the GPS antenna cable. Make sure that the GPS cable is not hanging over the top of the RPA. Connect the blue TNC-to-TNC cable (Part Number 41299) to the RPA.
Mounting the 5700 receiver To mount the 5700 receiver on the pole: 1. Attach the receiver bracket to the pole: a. Place the bracket against the pole, approximately 0.5 m from the ground. Note If you are using a 1" diameter pole, flip the black insert around inside the bracket as shown in Figure 2.8.

All the controls that you need for general operation of the 5700 receiver are located on the front panel.

Data button

Radio/Event Marker LED

Power button

SV Tracking LED Logging/ Memory LED Figure 3.1

Battery LEDs

Controls on front panel of the 5700 receiver
For more information about other panels of the 5700 receiver, see Parts of the Receiver, page 8.
The 5700 receiver has only two buttons: a Power button, represented in this manual by , and a Data button, represented by. to switch the receiver on or off, and to perform data Use management functions such as deleting files or resetting the receiver. to start or stop logging. This button is only effective when the Use receiver is switched on and has completed any power-up and initialization tasks. Table 3.1 describes the main functions of the two buttons.
Table 3.1 Action Turn the receiver on Turn the receiver off Start logging data internally Stop logging data internally Delete the ephemeris file Reset the receiver to factory defaults Delete application files Format the CompactFlash card Hold for 15 seconds Hold for 15 seconds Hold for 30 seconds Hold for 30 seconds Button functions Power button Press Hold for 2 seconds Press Hold for 2 seconds Data button
Note The term press indicates that you should press the button down and release it immediately. The term hold indicates that you should press the button down and hold it down until the time indicated has elapsed.

Button Functions

LED Behavior
The five LEDs on the top panel of the receiver indicate various operating conditions. Generally, a lit or slowly flashing LED indicates normal operation, a LED that is flashing quickly indicates a condition that may require attention, and an unlit LED indicates that no operation is occurring. The following table defines each possible LED state.
The term Flash Slow flash Fast flash On Off means that the LED is lit briefly every 3 seconds alternates slowly between being lit and unlit alternates rapidly between being lit and unlit is lit is unlit

Logging/Memory LED

Logging Internally

The 5700 receiver can log GPS data internally on a CompactFlash card. You can then use the Trimble Data Transfer utility to transfer logged data files to your office computer. The transferred files are in Trimble DAT (.dat) format. Data is logged using the current logging settings configured in the receiver. Data files logged internally are named automatically. To begin internal logging, press lights up.

. The Logging/Memory LED

for at least two seconds. The To stop logging, hold down Logging/Memory LED turns off. Note When the CompactFlash card is full, the receiver stops logging data, and the Logging/Memory LED switches off. Existing data files are not overwritten. Approximate storage requirements for different logging rates are shown in Table 3.2. The values shown are for a one-hour logging session with six satellites visible.
Table 3.2 Storage requirements Memory required 2,588 KB 335 KB 87 KB 37 KB
Logging rate 10 Hz 1 Hz 5 seconds 15 seconds

Logging Data

Note If power is lost, or the CompactFlash card is removed while logging, the file system is designed so that a maximum of ten seconds of data will be lost, regardless of the logging rate. To ensure that this behavior occurs, use the GPS Configurator software to perform a quick format of the CompactFlash card before logging data to the card for the first time.
Logging to the Trimble Survey Controller Software
When the 5700 receiver is connected to a data collector running the Trimble Survey Controller software, you can log GPS data from the receiver to the data collector, or to a PC card inserted in the data collector. When you use the Trimble Survey Controller software, you do not use the receivers controls. Instead, you use Trimble Survey Controller functions to set logging options, specify filenames, and control when logging occurs. Data is stored in job files, which can be transferred to your office computer using Trimbles Data Transfer utility. For more information on logging data from a receiver using the Trimble Survey Controller software, refer to the Trimble Survey Controller Reference Manual.

Resetting to Defaults

To reset the 5700 receiver to its factory default settings, hold down for at least 15 seconds.

Warning Make sure that you do not hold down for more than 30 seconds. After 30 seconds, any application files stored in the receiver are deleted and the CompactFlash card is reformatted.
Resetting the receiver to its factory defaults also deletes any ephemeris file in the receiver. For more information, see Chapter 10, Default Settings.

GPS Receiver User Guide

To format a CompactFlash card for use in a 5700 receiver, insert the card in the CompactFlash port, then hold down for at least 30 seconds. After 15 seconds, the receiver is reset to its factory defaults, and any ephemeris file is deleted. After 30 seconds, any files stored on the card are deleted and the CompactFlash card is reformatted.
Warning Formatting a CompactFlash card while it is in the receiver deletes all the data files on the card and all the application files in the receiver.
Note When you use to format the CompactFlash card, a quick format is performed. A quick format reformats the card for use with the 5700 receiver and deletes all data on the card. A full format also checks the card for errors and bad sectors. A full format is only necessary if the card is corrupted. To perform a full format, use the GPS Configurator software. For more information, see GPS Configurator Software, page 66.

Batteries and Power

The 5700 receiver can be powered either by its two internal batteries or by an external power source connected to Port 2 or Port 3. The charge provided by the internal batteries depends on the type of survey and operating conditions. Typically, one battery provides about 3.5 hours of power during an RTK survey using the internal radio, and about 5 hours during a survey without the internal radio. The external power source is always used in preference to the internal batteries. When there is no external power source connected, or if the external power supply fails, the internal batteries are used. The internal batteries are drained in turn, and the receiver automatically switches to the full battery when the first battery is drained.
Formatting a CompactFlash Card
If there is no external power supplied and both internal batteries are drained, none of the data that you have logged is lost. When internal or external power is restored, the receiver restarts in the same state as when power was lost. For example, if the receiver was logging data, the data file is not corrupted, and when power is restored the receiver resumes logging with the same settings as before. The power supply that is supplied with the 5700 receiver charges the receivers internal batteries while they are still in the receiver. To do this, connect the power supply (Part Number 30413) to the data/power cable (Part Number 32345), connect the cable to Port 2 on the receiver, and connect the power supply to an AC power source.

data/power cable

to AC power supply

Figure 3.2

Charging the batteries
The internal batteries start charging whenever an external power supply of greater than 15 V is detected. When using two 5700 receivers as the reference and roving receivers, you can use an external battery to power the reference receiver, and use its two internal batteries in the rover. To charge both sets of batteries, connect both receivers to power supplies as shown in Figure 3.3. If there is no reference receiver that you can use, extra batteries for the rover must be charged using the Lithium ion battery charger (Part Number 41114-10).

data/power cables

to AC power supply Figure 3.3 Charging rover and reference receiver batteries
The batteries take approximately eight hours to charge fully. The batteries are charged in parallel, so one battery takes as long to charge as two batteries.
Operation with the TSC1 Data Collector
If the 5700 receiver is being powered by its internal batteries, it does not supply power to the TSC1 data collector when they are connected. However, the TSC1 batteries and the 5700 receiver batteries can be charged at the same time from the same power supply. To charge both sets of batteries, use two standard data/power cables (Part Number 32345) to connect the TSC1 data collector and the 5700 receiver to a power supply, as shown in Figure 3.4.

Figure 3.4

Charging receiver and TSC1 batteries
If the receiver is being supplied with power from an external source, power is automatically output on Port 1. The output voltage is approximately 0.5 V less than the input voltage. Port 1 outputs a maximum voltage of 20 V, even if the input voltage is higher. You can use the GPS Configurator software or the Trimble Survey Controller software to enable power output on Port 3. Port 3 can be enabled for power output regardless of whether power is supplied internally or externally. On Port 3, the output voltage is approximately 0.5 V less than the input voltage. For example, if power is being supplied from the internal Lithium ion batteries, the maximum battery voltage is 8.4 V, so the maximum output voltage is 7.9 V. Note When you start a survey using the Trimble Survey Controller software, and you are using an external radio, the software automatically enables power output on Port 3.

Firmware

A receivers firmware is the program inside the receiver that makes the receiver run and controls the hardware. You can upgrade the firmware for the 5700 receiver in either of the following ways: Using the WinFLASH software Copying the firmware (.elf) file directly to the CompactFlash card

When you apply the current settings in the GPS Configurator software, each defined survey session is sent to the 5700 receiver as a pair of timed application files: the first includes the logging settings and start time, and the second contains settings that stop logging at the end time (which is calculated automatically from the duration you specify). For more information on scheduled survey sessions, refer to the GPS Configurator Help. The 5700 receiver can store up to 20 application files, so you can define a maximum of 10 scheduled survey sessions (10 pairs of start/stop timed application files). Note You cannot use the Configuration Toolbox software to define timed application files. Sleep mode Whenever you press to turn off the 5700 receiver, it checks for a timed application file that is due to be activated in the future. If one exists, the receiver goes into Sleep mode instead of powering down. In Sleep mode, the yellow Logging/Memory LED flashes every three seconds. The receiver wakes up five minutes before the scheduled activation time, so that it is ready to begin logging at the scheduled time.
Applying Application Files
An application files settings do not affect the receivers configuration until you apply the application file. You can do this at the same time that you save the file. Alternatively, you can save the file on the computer or in the receiver, then open it later and apply its settings. Note If the application file is a timed file, its settings do not take effect as soon as you apply the file, but at the time that the file specifies for its activation.
Storing Application Files
You can store application files that you create in the Configuration Toolbox software on both your receiver and computer. Each file can, for example, represent a different user sharing the same receiver, or a particular mode of operation or survey style. Saving application files on your computer as well as in your receiver is optional, but it is useful because: it gives you a permanent copy of the settings you have sent to a receiver, for audit or your own reference you can use the same file to configure multiple receivers identically you can use an existing application file as a template for creating other application files with similar settings

Naming Application Files

The filename that you use to store the application file in the computer and the name under which the file is stored in the receiver are always the same. This makes recognizing and keeping track of your application files easier. If you change the name of the file on the receiver, this changes the filename used to store the application file on your computer. Similarly, if you change the filename on the computer, the name of the file in the receiver will change.

Transferring Files Directly from a CompactFlash Card
All data is stored in a 5700 receiver on an internal CompactFlash card. There are two ways to transfer files between the receiver and your office computer: Connect the receiver to the office computer and use the Data Transfer utility to transfer files. Remove the CompactFlash card from the receiver and connect it directly to your office computer, where it functions like a normal disk drive. Use Windows Explorer to transfer files.
When you use the Data Transfer utility to transfer data files from the CompactFlash card while it is still inserted in the 5700 receiver, the Data Transfer utility converts the raw receiver data (.T00) files you select into the Trimble DAT file format. However, if you connect the CompactFlash card to your computer and then copy or move files to your computer, it treats the card like any other disk drive, and transfers the files without converting them. You need to convert these raw receiver files to DAT format files before you can use them on your office computer. You can convert receiver data files by using a Windows Explorer extension which is installed on your computer when you install the Data Transfer utility. Note Although this extension is only available if you have the Data Transfer utility installed, you do not have to run the Data Transfer utility to use it.
On your office computer, open Windows Explorer and navigate to the location of the.T00 file. Right-click the file, and from the menu that appears select Convert to DAT format:
The DAT File Conversion dialog appears while the file is converted. When the dialog disappears, the file conversion is complete. A new file with the same filename but a.dat extension appears in the same folder as the.T00 file.
To convert a.T00 file on your office computer into the DAT format:
Deleting Files in the Receiver
You can delete files stored in the 5700 receiver at any time. Do one of the following: Use the Data Transfer utility in the Trimble Geomatics Office software. Use the TSC1 data collector. for 30 seconds after the receiver has been Hold down powered on. When you use this method, all data is deleted. Use the GPS Configurator software.

Supported File Types

Table 5.1 shows the file types that you can transfer to or from a 5700 receiver and the software or utility that you must use to transfer each file type.

Update Rate and Latency

The number of position fixes delivered by an RTK system per second is called the update rate. The update rate determines how closely the trajectory of the rover can be represented and the ease with which position navigation can be accomplished. For the 5700 receiver, the maximum update rate is 10 Hz. Solution latency is the lag in time between when the position was valid and when it is displayed. For precise navigation, you must have prompt position estimates, not values from 2 seconds ago. Solution latency is particularly important when guiding a moving vehicle. For example, a vehicle traveling at 25 kilometers per hour moves at approximately 7 meters per second. Thus, to navigate to within 1 meter, the solution latency must be less than 1/7 second (0.14 s). Various factors contribute to latency, as shown in Figure 8.1. The latency value can vary between 0.5 and 2 seconds.

Collect observations

Format data
Time (seconds) Reference receiver
Synchronize reference data

Transmit data

Rover Latency

Compute RTK position

Display position

Figure 8.1

Factors contributing to RTK latency

Data Link

The data link transfers the reference receivers carrier phase and code measurements, and the location and description of the reference station, to the rover. The TRIMMARK 3 reference radio modem, with the 5700 receivers internal receive-only radio, is designed for 5700 receiver RTK operation. TRIMTALK 450 radio modems are also customized for RTK applications. You can also use third-party radio modems, cellular phones, or satellite communication links to transmit reference station data to one or more rover sites. Factors to consider when choosing a data link include: Throughput capacity Range
Error checking and correction Power consumption
The data link must support at least 2400 baud throughput. However, a throughput of 9600 baud is preferable. Correction message formats In addition to selecting a data link, you need to decide in which format messages will be transmitted over the data link. The 5700 receiver supports two standards for RTK positioning: the Compact Measurement Record (CMR) format and the RTCM/RTK message format. The Compact Measurement Record (CMR) format was designed by Trimble and is supported by all Trimble RTK products. CMR messages require at least a 2400 baud data link.

Summary of RTK positioning modes Table 8.1 summarizes the RTK positioning modes available in the 5700 receiver. Accuracy figures are 1 sigma and assume a 1 second data link delay.
Table 8.1 RTK mode Synchronized Comparison of RTK positioning modes Update rate (Hz) 1 Latency (seconds) 0.5 2.5 Minimum data Accuracy (RMS) link (baud) 2400 Horizontal: 1 cm + 1 ppm Vertical: 2 cm + 2 ppm Low Latency 5 0.Horizontal: 2 cm + 2 ppm Vertical: 3 cm + 2 ppm
Critical Factors Affecting RTK Accuracy
The following sections present system limitations and potential problems that could be encountered during RTK operation. Reference receiver type Optimal RTK performance is achieved when using 5700 receivers at reference and rover sites. However, the 5700 receiver is compatible with all other Trimble RTK systems, so you can use a 5700 receiver as the rover and a different receiver type as the reference station.
Warning Trimble recommends that you only use a Trimble reference receiver with 5700 rovers. If you use a non-Trimble reference receiver, initialization reliability and RTK performance may be degraded.
Reference station coordinate accuracy Incorrect or inaccurate reference station coordinates degrade the rover position solution. It is estimated that every 10 meters of error in the reference station coordinates introduces one part per million error in the baseline vector. This means that if the reference station coordinates have a height error of 50 meters, and the baseline vector is 10 kilometers, then the error in the rover location is approximately five centimeters. For optimal results, the reference station coordinates should be known to within 10 meters in the WGS-84 datum. Number of visible satellites The more GPS satellites that are visible, the greater the solution quality and integrity. Even though only four satellites are needed to calculate a three-dimensional position, RTK initialization requires that at least five common satellites be tracked at the reference and rover sites. In addition, L1 and L2 carrier phase data must be tracked on the five common satellites for successful RTK initialization. Elevation mask Because atmospheric errors and signal multipath are largest for low elevation satellites, the elevation mask stops the 5700 receiver from using satellites that are low on the horizon. The 5700 receiver uses a default elevation mask of 13 degrees. If a lower elevation mask is used, system performance is degraded. Operating range Operating range refers to the maximum separation between reference and rover sites. Often the characteristics of the data link determine the RTK operating range. Although a shorter baseline will improve solution reliability, the 5700 receiver can remove ionospheric and tropospheric bias to allow reliable operation on baselines beyond 10 km.
Environmental factors Table 8.2 lists some of the environmental factors that can affect the quality of GPS measurements.

When you send an application file to the receiver and you apply the files settings immediately you apply the file later it is a timed application file
then the receiver settings are changed as soon as you send the file to the receiver as soon as you apply the file at the specified activation time
Introduction Port 1, 2, and 3 connectors Data/Power cable Event/PPS cable GPS antennas and cables
This chapter provides pinout information for the 5700 receiver standard and optional cables. This information can be used to prepare special cables for connecting the 5700 receiver to devices and instruments not supported by the standard and optional cables.
Port 1, 2, and 3 Connectors
Figure 11.1 shows the location of the 5700 serial ports.

Port 1

Figure 11.1

5700 serial ports

Figure 11.2 gives pinout requirements for the connector labeled Port 1. The pin locations for the Port 2 and Port 3 connectors are identical.

Figure 11.2

Pinout connector diagram
Table 11.1 describes the pinout functionality.

Table 11.port pinouts

Pin Pinout function Port 1 (TSC1 data collector, event, or computer) 7 Signal GND GND TX data out (TXD1) RTS1 CTS1/Event 2 Power Out (+) Serial data in (RXD1) Port 2 (Power in, computer, PPS, or event) Signal GND GND TX data out (TXD2) 1PPS Event 1 Power In (+) Serial data in (RXD2) Port 3 (External radio or power in) Signal GND GND TX data out (TXD3) RTS3 CTS3 Power In/Out (+) Serial data in (RXD3)

Data/Power Cable

Table 11.2 gives pinout information for the data/power cable (Part Number 32345), which is supplied with the 5700 receiver.

Table 11.2

Data/power cable pinouts Direction DE9-F connector 7 Cond Pin Color Function Signal ground Black 7 Orange Blue Green TXD RTS CTS Red 3 Yellow TXD Power IN (+) V-OUT Power lead 2 Cond Color Function
Lemo 0-shell connector 7 Pin Pin Function 7 Signal ground GND TXD RTS/TXD CTS/RXD PWR RXD
Note Table 11.2 assumes that the cable is attached to the connector labeled Port 1 or Port 3.

Event Marker/1PPS Cable

The event marker/1PPS cable (Part Number 36451-00) shown in Figure 11.3 provides a breakout box with two BNC (female) connectors for providing 1PPS input and event marker output. Connect a device that accepts 1PPS output pulses to the BNC connector labeled 1PPS on the breakout box. Connect a device that outputs event marker pulses to the 5700 receiver, such as a photogrammetric camera, to the BNC connector labeled Event Marker on the breakout box.
P3 (Event marker) P2 (1PPS out)
P4 (Port 2 extension) P1 (To Port 2)

Table 12.1 summarizes the set of NMEA messages supported by the 5700 receiver, and shows the page where detailed information about each message can be found.
Table 12.1 Message GGA GST GSV PTNL,GGK PTNL,GGK_SYNC PTNL,PJK PTNL,PJT PTNL,VGK PTNL,VHD VTG ZDA NMEA message summary Function Time, position, and fix related data Position error statistics Number of SVs in view, PRN, elevation, azimuth, and SNR Time, position, position type and DOP values Time, synchronized position, position type and DOP values Local coordinate position output Projection type Time, locator vector, type and DOP values Heading Information Actual track made good and speed over ground UTC day, month, and year, and local time zone offset Page 140
The output of individual NMEA messages can be enabled or disabled by: creating an application file in the Configuration Toolbox software that contains NMEA output settings, and sending the file to the 5700 receiver
adding NMEA outputs in the Serial outputs tab of the GPS Configurator software, and applying the settings

Common Message Elements

Each message contains: A message ID consisting of $GP followed by the message type. For example, the message ID of the GGA message is $GPGGA. A comma A number of fields that depend on message type, separated by commas An asterisk A checksum
Here is an example of a simple message with a message ID ($GPGGA), followed by 13 fields and checksum value: $GPGGA,172814.0,3723.46587704,N,12202.26957864,W,2,6, 1.2,18.893,M,-25.669,M,2.0,0031*4F

12.3.1

Message Values
The following values can be found in NMEA messages output by the 5700 receiver. Latitude and Longitude Latitude is represented as ddmm.mmmm and longitude is represented as dddmm.mmmm, where: dd or ddd is degrees mm.mmmm is minutes and decimal fractions of minutes

Direction

Direction (north, south, east, or west) is represented by a single character: N, S, E, or W.
Time Time values are presented in Universal Time Coordinated (UTC) and are represented as hhmmss.cc, where: hh is hours, from 00 to 23 mm is minutes ss is seconds cc is hundredths of seconds

NMEA Messages

When NMEA-0183 output is enabled, the following messages can be generated.
Time, Position, and Fix Related Data An example of the GGA message string is shown below. Table 12.2 describes the message fields. $GPGGA,172814.0,3723.46587704,N,12202.26957864,W, 2,6,1.2,18.893,M,-25.669,M,2.0,0031*4F
Table 12.2 Field 3 GGA message fields
Meaning UTC of position fix Latitude Direction of latitude: N: North S: South
Direction of longitude: E: East W: West

Longitude

NMEA-0183 Output Table 12.2 Field 6 GGA message fields (Continued)
Meaning GPS Quality indicator: 0: Fix not valid 1: GPS fix 2: Differential GPS fix 4: Real Time Kinematic, fixed integers 5: Real Time Kinematic, float integers

The SV Tracking LED is not flashing.
Reference receiver is not broadcasting.
Port settings between reference receiver and radio are incorrect.
Faulty cable between receiver and radio.
Troubleshooting Table 14.1 Problem Roving receiver is not receiving radio. Troubleshooting (Continued) Possible cause Reference receiver is not broadcasting. Incorrect over air baud rates between reference and rover. Incorrect port settings between roving external radio and receiver. Solution See above.
Connect to the roving receivers radio and check to ensure it has the same setting as the reference receiver. If the radio is receiving data (the Logging/Memory LED is flashing) and the receiver is not getting radio communications, use the Trimble Survey Controller software to check that the port settings are correct. Make sure that the radio antenna cable (with the blue over-mould) is connected between the blue TNC connector marked RADIO and the radio antenna. Disable flow control on the modem. Use a special cable. For more information, refer to the document Using Cellular and CDPD Modems for RTK, which is available from the Trimble web site.
The radio antenna cable and GPS antenna cable are mixed up.
The cellular modem does not have hardware flow control enabled.

Symbols

9, 37 9, 37 $ (NMEA start of message delimiter) 126 * (NMEA checksum delimiter) 128 , (NMEA field delimiter) 126.cfg files 5156, 64.dat files 62, 64 size 61.elf files 47, 64.eph files 64.T00 files 62, 64 size 61 internal radio 28 LEDs 38 maximum number of application files 52 operating range 97 output formats 108 parts of the receiver 813 pole-mounted setup 18 postprocessed setup 16 resetting to factory defaults 37, 112 setup 734 specifications 105108 turning on and off 37, 40 upgrading firmware 47, 72 use and care 6

Numerics

1PPS output 5, 108, 146150 configuring in real time 148 configuring with an application file 149 default settings 111 enabling in real time 148 enabling with an application file 149 pulse definition 146 time tag definition receiver backpack setup 25 buttons 37 factory default settings 110 features 5
accuracy centimeter-level 5, 90 factors affecting RTK 96 meter-level 91 reference station coordinate 97 submeter-level 5 Actual Track Made Good Over and Speed Over Ground message 139 adding frequencies for internal radio 74 ambiguity 90 ANT port 12, 155 icon 12 antenna information, default 112
5700 GPS Receiver User Guide 157
Index antenna power adapter 32, 123 Antenna record, in application file 51 antennas electrical interference 14 mounting 14 RPA 25 rubber duck 18, 25 using with 5700 receiver 32, 123 whip 18, 25 Zephyr 19 Zephyr Geodetic 19 application files 5156, 64 applying 56 configuring receiver with 51 Current (Current.cfg) 53, 110 Default (Default.cfg) 52, 110 deleting 37 deleting by formatting CompactFlash card 43 editing in Configuration Toolbox software 68 maximum number 52 naming 56 overview 51 Power Up (Power_Up.cfg) 53, 110 records 51 storing 56 timed 38, 54, 86, 116 using to configure 1PPS output 149 applying application files 56 ASCII output, default settings 111 ASCII time tags default 111 definition 147 atmospheric errors 91 automatic initialization 90 automatically starting surveys 86

DATASHEET

TRIMBLE 5700 GPS SYSTEM

KEY FEATURES

ONE RECEIVER, MANY CONFIGURATIONS, FOR GREATER FLEXIBILITY AND CHOICE
FAST AND EFFICIENT DATA STORAGE AND COMMUNICATIONS
The Trimble 5700 GPS receiver is an advanced,
Use the receivers CompactFlash memory to store more than 3,400 hours of continuous L1/ L2 data collection at an average of 15-second intervals. Transfer data to a PC at speeds of more than 1 megabit per second through the super-fast USB port. Your choice of UHF radio modem is built in to the receiver to provide RTK communications receiving without the need for cables or extra power!
YOUR CHOICE OF TRIMBLE ANTENNA
Industry-leading technology provides superior performance Flexible configurations put you in total control Rugged, high-performance hardware is built to last With the Trimble controller and software of your choice, enjoy seamless integrated surveying
but easy-to-use, surveying instrument that is rugged and versatile enough for any job. Combine your 5700 with the antenna and radio that best suit your needs, and then add the Trimble controller and software of your choice for a total surveying solution. The powerful 5700 GPS system will provide all the advanced technological power and unparalleled flexibility you need to increase your efficiency and productivity in any surveying environment.
ADVANCED GPS RECEIVER TECHNOLOGY
Choose the high-accuracy Trimble GPS antenna that best suits your needs: the lightweight and portable ZephyrTM antenna for RTK roving, or the Zephyr GeodeticTM antenna for geodetic surveying. The Zephyr Geodetic antenna offers submillimeter phase center repeatability and excellent low-elevation tracking, while the innovative design of its Trimble StealthTM ground plane literally burns up multipath energy using technology similar to that used by stealth aircraft to hide from radar. The Zephyr Geodetic antenna thus provides unsurpassed accuracy from a portable antenna.
The 5700 is a 24-channel dual-frequency RTK GPS receiver featuring the advanced Trimble MaxwellTM technology for superior tracking of GPS satellites, increased measuring speed, longer battery life through less power use, and optimal precision in tough environments. WAAS and EGNOS capability lets you perform real-time differential surveys to GIS grade without a base station.
MODULAR DESIGN FOR VERSATILITY
For topographic, boundary, or engineering surveying, clip the receiver to your belt, carry it in a comfortable backpack, or configure it with all components on a lightweight range pole. With the receiver attached to your site vehicle, you can survey a surface as fast as you can drive! For control applications, attach the receiver to a tripod its designed to work the way your job requires.
FULL METAL JACKET AND LIGHTWEIGHT
The 5700 GPS receiver boasts the toughest mechanical and waterproofing specs in the business. Its magnesium alloy case is stronger than aluminum, but also 30% lighterthe 5700 weighs just 1.4 kg (3 lb) with batteries. Whether youre collecting control points on a tripod, or scrambling down a scree slope collecting real-time kinematic data, the receiver is light enough and tough enough to carry on performing.
General Front panel for on/off, one-button-push data logging, CompactFlash card formatting, ephemeris and application file deletion, and restoring default controls LED indicators for satellite tracking, radiolink, data logging, and power monitoring Tripod clip or integrated base case PERFORMANCE SPECIFICATIONS Measurements Advanced Trimble Maxwell technology High-precision multiple correlator L1 and L2 pseudorange measurements Unfiltered, unsmoothed pseudorange measurement data for low noise, low multipath error, low time domain correlation, and high dynamic response Very low noise L1 and L2 carrier phase measurements with <1 mm precision in a 1 Hz bandwidth L1 and L2 Signal-to-Noise ratios reported in dB-Hz Proven Trimble low-elevation tracking technology 24 Channels L1 C/A Code, L1/L2 Full Cycle Carrier, WAAS/EGNOS Code differential GPS positioning1 Horizontal. (0.25 m + 1 ppm) RMS Vertical. (0.5 m + 1 ppm) RMS WAAS differential positioning accuracy typically <5 m 3DRMS2 Static and FastStatic GPS surveying1 Horizontal. 5 mm + 0.5 ppm RMS Vertical. 5 mm + 1 ppm ( baseline length) RMS Kinematic surveying1 Real-time and postprocessed kinematic surveys Horizontal.(10 mm + 1 ppm) ( baseline length) RMS Vertical. (20 mm + 1 ppm) RMS Initialization time. Single/Multi-base minimum 10 sec + 0.5 times baseline length in km, up to 30 km Scalable GPS infrastructure initialization time.<30 seconds typical anywhere within coverage area Initialization reliability3. Typically >99.9% HARDWARE 5700 GPS receiver Physical: Casing. Tough, lightweight, fully sealed magnesium alloy Waterproof. Tested to IPX7 standards Shock and vibration. Tested and meets the following environmental standards: Shock.MIL-STD-810F to survive a 1 m (3.28 ft) drop onto concrete Vibration. MIL-STD-810-F on each axis Weight. With internal batteries, internal radio, internal battery charger, standard UHF antenna: 1.4 kg (3 lb) As entire RTK rover with batteries for greater than 7 hours, less than 4 kg (8.8 lb) Dimensions (WHL).13.5 cm 8.5 cm 24 cm (5.3 in 3.4 in 9.5 in) Electrical: Power.DC input 11 V DC to 28 V DC with over voltage protection Power consumption. 2.5 W receiver only, 3.75 W including internal radio Battery.Greater than 10 hours data logging, or greater than 7 hours of RTK operation on two internal 2.0 Ah lithium-ion batteries Battery weight. 0.1 kg (3.5 oz)

Battery charger. Internal with external AC power adapter; no requirement for external charger Power output. 11.5 V to 20 V DC (Port 1), 11.5 V DC to 27.5 V DC (Port 3) on external power input Certification. Class B Part 15 FCC certification, CE Mark approved, C-Tick approved, Canadian FCC Environmental: Operating temperature4. 40 C to 65 C (40 F to 149 F) Storage temperature. 40 C to 80 C (40 F to 176 F) Humidity. 100%, condensing Communications and data storage: 2 external power ports, 2 internal battery ports, 3 RS232 serial ports Integrated USB for data download speeds in excess of 1 Mb per second External GPS antenna connector CompactFlash advanced lightweight and compact removable data storage. Options of 64 MB or 128 MB from Trimble More than 3,400 hours continuous L1+L2 logging at 15 seconds with 6 satellites typical with 128 MB card Fully integrated, fully sealed internal UHF radio modem option GSM, cellphone, and CDPD modem support Dual event marker input capability 1 Hz, 2 Hz, 5 Hz, and 10 Hz positioning and data logging 1 pulse per second output capability CMRII, CMR+, RTCM 2. and 3. input and output standard 15 NMEA outputs Zephyr antenna Dimensions. 16.2 cm (6.38 in) diameter 6.2 cm (2.44 in) height Weight. 0.55 kg (1.20 lb) Operating temperature. 40 C to 70 C (40 F to 158 F) Humidity. 100% humidity proof, fully sealed Shock and vibration. Tested and meets the following environmental standards: Shock. MIL-STD-810-F to survive a 2 m (6.56 ft) drop onto concrete Vibration. MIL-STD-810-F on each axis 4-point antenna feed for submillimeter phase center repeatability Integral low noise amplifier 50 dB antenna gain Zephyr Geodetic antenna Dimensions. 34.3 cm (13.5 in) diameter 7.6 cm (3 in) height Weight. 1.31 kg (2.88 lb) Operating temperature. 40 C to 70 C (40 F to 158 F) Humidity. 100% humidity proof, fully sealed Shock and vibration. Tested and meets the following environmental standards: Shock. MIL-STD-810-F to survive a 2 m (6.56 ft) drop onto concrete Vibration. MIL-STD-810-F on each axis 4-point antenna feed for submillimeter phase center repeatability Integral low noise amplifier 50 dB antenna gain Trimble Stealth ground plane for reduced multipath
1 Accuracy may be subject to conditions such as multipath, obstructions, satellite geometry, and atmospheric parameters. Always follow recommended survey practices. 2 Depends on WAAS/EGNOS system performance. 3 May be affected by atmospheric conditions, signal multipath, and satellite geometry. Initialization reliability is continuously monitored to ensure highest quality. 4 Receiver operates normally to 40 C (40 F) but some office-based functions such as USB download or internal battery charging are not recommended at temperatures below freezing. Specifications subject to change without notice.

20042005, Trimble Navigation Limited. All rights reserved. Trimble and the Globe & Triangle logo are trademarks of Trimble Navigation Limited, registered in the United States Patent and Trademark Office and in other countries. Maxwell, Trimble Stealth, Zephyr, and Zephyr Geodetic are trademarks of Trimble Navigation Limited. All other trademarks are the property of their respective owners. Reorder PN 022543-074C (06/05)
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