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SX BLUE GPS SXblue GPS logo User Manual

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  • Page 1 USER MANUAL WWW.SXBLUEGPS.COM...
  • Page 2 SXblue GPS inc. Trademarks The SXblue GPS logo, SXblue GPS™, SXblue GNSS , SXblue L1/L2 GNSS , SXblue II+ GPS™, iSXblue II+ GPS , SXblue II-B GPS™, SXblue II-L GPS™, SXblue II+...
  • Page 3 SXblue GPS 10700 Secant Montreal, Quebec, Canada H1J 1S5 Telephone number: +1-514-354-2511 Toll Free: +1-800-463-4363 (North America) Fax number: +1-514-354-6948 E-mail address: info@sxbluegps.com Web Sites: www.sxbluegps.com SXblue GPS Limited Warranty SXBlue GPS hereby warrants solely to the end purchaser of the Products, subject to the exclusions and procedures set forth herein below, that the Products sold to such end purchaser shall be free, under normal use and maintenance, from defects in material and workmanship for a period of 2 years from delivery date to such end purchaser.
  • Page 4 SXBlue GPS does not warrant or guarantee the precision or accuracy of positions obtained when using Products. Products are not intended for primary navigation or for use in safety of life applications. The potential accuracy of Products as stated in SXBlue GPS literature and/or Product specifications serves to provide only an estimate of achievable accuracy based on: •...
  • Page 5 Governing Legislation To the greatest extent possible, this warranty shall be governed by the laws of the Province of Quebec (Canada). In the event that any provision hereof is held to be invalid by a court of competent jurisdiction, such provision shall be severed from this warranty and the remaining provisions shall remain in full force and effect.

  • Page 6: Table Of Contents

    Table of Contents List of Figures ............................viii List of Tables ............................ix Organization ............................ xi Customer Service ..........................xi World Wide Web Site ........................xii Document Conventions ........................xii Notes, Cautions, and Warnings ..................... xiii 1. Getting Started ..........................13 1.1 Unpacking Your SXblue Receiver ..................
  • Page 7 1.4.6.2 SXblue RTN ....................45 1.4.6.3 SXblue Server ..................... 45 1.4.6.4 SXblue Mirror ....................45 1.4.6.5 RINEX Converter ..................46 1.4.6.6 SXblue GPS EZSurv ................... 46 1.4.6.7 SXblue GPS FieldGenius ................46 1.4.6.8 ESRI Collector ..................... 46 2. Features and Performance ......................47 2.1 GPS ............................
  • Page 8 3.2.2 Activating an Option ....................74 3.3 DGPS RadioBeacon Operation (SXblue II-B GPS) ..............76 3.3.1 Automatic Mode ....................76 3.3.2 Manual Mode ....................77 3.3.3 Database Mode......................77 3.3.4 Evaluating Performance ..................78 4. Troubleshooting ..........................80 4.1 Troubleshooting Checklist ......................80 4.2 Using the LEDs to Troubleshoot....................

  • Page 9: List Of Figures

    List of Figures Figure 1-1 SXblue Series Main Components ..................15 Figure 1-2 Battery contacts ........................16 Figure 1-3 GNSS/Beacon/L-band Antenna ................... 17 Figure 1-4 Cable for GNSS Precision Antenna and SXblue 12/24 volts ..........18 Figure 1-5 Cable for GNSS Survey Antenna and SXblue 12/24 volts ..........18 Figure 1-6 Cable for GNSS Precision Antenna and SXblue receiver ...........
  • Page 10 List of Tables Table 1-1 Default Applications and Performances................20 Table 1-2 Default Port Settings ......................21 Table 1-3 Default GPS NMEA Message Output ................... 21 Table 1-4 Default Parameters ....................... 22 Table 1-5 LED Indicators Definitions ....................40 Table 2-1 Differential and Global Options ..................... 59 Table 2-2 Horizontal Accuracy Probability Statistics ................
  • Page 11 Preface Welcome to the SXblue Series User Manual and congratulations on purchasing this high- performance GPS (GNSS) receiver. The SXblue Series provides a high level of performance, delivering sub-meter positioning ® using either the built-in SBAS demodulator (all models), Atlas (SXblue Platinum with L- band correction), Radio Beacon DGPS (SXblue II-B GPS) or external corrections (all models), at up to 20Hz output (optional).

  • Page 12: Organization

    • SureTrack technologies (GNSS models only) enable the use of GLONASS satellites in the code DGPS and phase RTK solution respectively, without receiving GLONASS corrections from the differential source (SBAS, RTK, GPS-only base station, etc). Organization This manual contains the following chapters: Chapter 1: Getting Started - provides information to help you get your SXblue receiver running quickly.

  • Page 13: World Wide Web Site

    Technical Support is available from 8:30 AM to 5:00 PM Eastern Time, Monday to Friday. To expedite the support process, please have the product model and serial number available when contacting SXblue GPS Customer Service or Technical Support. Technical Support inquiry can be sent by email at support@sxbluegps.com or by filling an Online Request under Technical Support tab from...

  • Page 14: Notes, Cautions, And Warnings

    Notes, Cautions, and Warnings Notes, Cautions, and Warnings stress important information regarding the installation, configuration, and operation of the SXblue receiver. Note - Notes outline important information of a general nature. Cautions - Cautions inform of possible sources of difficulty or situations that may cause damage to the product.

  • Page 15: Getting Familiar With Your Sxblue

    Note - If, for some reason, you find a discrepancy between your packing slip and the contents of your shipment, please contact the authorized reseller with which you placed your order immediately. 1.2 Getting Familiar with your SXblue The SXblue is composed of three main parts: The receiver with user interface (LED’s, Communication ports, Antenna connector) The battery pack with Battery Fuel Gauge (except SXblue 12/24 volts)

  • Page 16: Figure 1-1 Sxblue Series Main Components

    Figure 1-1 SXblue Series Main Components The connections required by the SXblue receiver are very straightforward. All cables necessary for complete operation are provided. The RS-232 port is a D-Sub 9-pin female connector (differs for SXblue 12/24 volts) The USB port is a Type-B female connector (not available for SXblue 12/24 volts) The Bluetooth port is a Class 1 type.

  • Page 17: Battery Pack

    1.2.2 Battery Pack (not available for SXblue 12/24 volts) The Lithium-Ion battery pack attaches to the receiver with four thumb screws. Modular contacts are used to supply power to the receiver. Even though the Li-Ion battery pack has a built-in protection circuitry, care must be taken not to short the contacts on the battery pack.

  • Page 18: Precision And Survey Antenna

    Do not store the battery inside vehicles in hot weather. Do not short-circuit battery contacts. Do not puncture or obstruct membrane vents. Battery should be stored at room temperature charged to about 30-50% capacity. Charge battery once every 3 months to prevent overdischarge. Battery must be charged only when its temperature has settled between 0°C and 45°C.

  • Page 19: Gnss Antenna Cable Configuration

    Caution – By default, the SXblue receiver supplies 5.0 VDC across its RF connector to power an active GPS antenna’s low noise amplifier (LNA). Connection to a GPS antenna that doesn’t support a 5 VDC input could damage the antenna. 1.2.4 GNSS Antenna Cable Configuration The cable between GNSS antenna and SXblue receiver depends on the connector type of antenna and receiver.

  • Page 20: Sxblue Ii, Sxblue Iii And Sxblue Platinum With Gnss Precision Antenna

    Figure 1-5 Cable for GNSS Survey antenna and SXblue 12/24 volts receiver Figure 1-7 Cable for GNSS Survey antenna and SXblue receiver 1.2.4.3 SXblue II, SXblue III and SXblue Platinum with GNSS Precision Antenna The cable required for this configuration is equipped with SMA (male) connector which goes to the GNSS Precision antenna and SMAR (male) right angle connector which goes to SXblue receiver (see Figure 1-6).

  • Page 21: Default Parameters

    Allows the use of any device, tablet PC, laptop or computer technology to suit the application Allows the use of any off-the-shelf software Allows for keeping up-to-date with the very fast evolving computer/software technology Allows greater flexibility/versatility for installation in all sorts of applications. This section covers the normal steps that one would normally follow to get the system up and running for a generic GIS sub-meter data collection session: knowing the factory default settings of the communication ports and output...

  • Page 22: Table 1-2 Default Port Settings

    3. SBAS 4. Beacon 5. External RTCM 6. Autonomous If you are using RTK solution and you lose your RTK radio link, the device defaults to the next highest mode, being either Atlas high precision service or SBAS (if available). If the new signal becomes unusable, the next mode will be selected (for example Beacon or External RTCM).

  • Page 23: Configuring Bluetooth Communication

    one to another and can be set to input or output different messages at different rates (NMEA, Binary, Differential correction). Minimum sentences are activated by default on the Serial port, as it is often used with radios for Base/Rover RTK operations, this port can be set for specific use.

  • Page 24: Android Os

    Even though the setup procedure will be different for each of them, the basics remain the same. The two major steps are: discovering a Bluetooth device and assigning a communication port number to the discovered device. The data collection software will then call the assigned port number to receive the data from the SXblue receiver.
  • Page 25 Before running location application (software), the SXBlue receiver must be connected with your Android device using Bluetooth. Once the SXBlue receiver has been turned ON… Go to the setting icons on the Android device and then select the Bluetooth tab. The Bluetooth switch must be in the ON position to discover any Bluetooth devices.

  • Page 26: Apple Ios

    The SXBlue Platinum is now ready to use with your Android application! 1.3.2.2 Apple iOS iOS version 10.3 has been used for this Bluetooth connection procedure. Steps are similar with other version of iOS. The following screenshots show how to properly handle the configuration steps to connect SXblue receiver with your device.

  • Page 27: Windows 10

    The SXBlue Platinum is now ready to use with your iOS device! 1.3.2.3 Windows 10 Microsoft Bluetooth drivers for Windows 7, 8 and 10 are similar with just a few minor differences. For more details about Windows 7 and 8, please contact SXblue Support on our web site.
  • Page 28 From the left panel, select Bluetooth. Select the SXblue receiver, and tap Pair to establish the connection. If a code is required for your SXblue receiver, enter the passcode 12345678. On the bottom of the screen, press More Bluetooth Options Form Bluetooth Settings screen, select COM Ports tab, select the COMxx Outgoing direction, and press Add…...

  • Page 29: Windows Mobile Ce

    Select Outgoing (your PC initiates the connection). From the scroll down list (Device that will use the COM port:), select the SXblue receiver and press OK. Finally, press OK again on the bottom of the Bluetooth Settings screen. From your data collection software settings, you should use the port number that you select on the previous step.
  • Page 30 Once the SXblue receiver has been found, select it then tap Next. The driver will ask for a Passcode; at this point enter 12345678 and hit Next. Select Advanced button in the lower right section of the screen. Check the Serial Port option and tap Save. The SXblue receiver will be added to the list of discovered devices.

  • Page 31: Installing The Usb Drivers For Microsoft Windows

    Unselect the Secure Connection option and select a COM Port number (in this example: COM 9). It is recommended that you start with the highest COM port number available. Press Finish button. Your SXblue receiver will be shown in the list along with its assigned COM port number.
  • Page 32 In the SXblue – USB Driver Setup, the default location for the driver installation will “C:\Program Files\SXblue GPS\SXblueIIGPS USB Drivers”. Click on Install. The driver files will be uncompressed to the specified location and the Installer window will be displayed. Click on Next to proceed with the installation.

  • Page 33: In The Field

    1.4 In the Field This section covers the following topics: setting up SXblue receiver for sub meter work using the nylon carrying case and soft hat, setting up the receiver on a range pole using optional accessories such as mounting plate and brackets, definition of the LED indicators, generic data collection software configuration and basic recommendations for optimal performance.

  • Page 34: Setting Up For Sub Meter Work

    1.4.1 Setting up for Sub meter Work For applications requiring only sub meter positioning, a soft hat for the Precision Antenna is provided when you order the Standard Package. Proper installation of the receiver and cable in the carrying case is shown in the subsection below. 1.4.1.1 Using the Nylon Carrying Case The supplied nylon carrying case features a belt loop and can also be used with a belt clip or a shoulder strap.

  • Page 35: Using The Soft Hat

    1.4.1.2 Using the Soft hat When using the soft hat or the antenna mounting plate, the magnet adaptor should be removed from the Precision Antenna. Simply locate the four screws at the bottom of the antenna and use a “Philips” type screwdriver to remove the magnet adaptor (see Figure 1-9).

  • Page 36: Setting Up For Rtk Work

    1.4.2 Setting up for RTK Work For applications requiring more accuracy, the SXblue receiver and its antenna will be normally mounted on a survey range pole. The Survey Antenna requires no extra setup but the Precision Antenna must be mounted on the optional Antenna Mounting Plate (see Figure 1-11).

  • Page 37: Range Pole Setup

    Install the antenna on the mounting plate so that the SMA connector is perfectly aligned with the slot and the screw holes match one set of the patterns at the bottom of the plate (see Figure 1-11). Use the screws provided with the mounting plate to secure the antenna. Attach the cable to the antenna making sure the SMA adaptor remains tight.

  • Page 38: Antenna Phase Center

    Separate the two parts of the L-Shaped Bracket by removing the two outer screws in the back (see Figure 1-12). Slide the “U” shaped part of the bracket through the belt-loop of the nylon carrying case. Place the cover back (with the two inner screws facing inside) and tighten the two outer screws.

  • Page 39: Gnss Precision Antenna

    1.4.3.1 GNSS Precision Antenna Figure 1-14 Phase Center – Precision GNSS Antenna (GESXB3GLANT) 1.4.3.2 GNSS Survey Antenna Figure 1-15 Phase Center – Survey GNSS Antenna (GESXGNSSSANT31) SXblue Series User Manual...

  • Page 40: Definition Of The Led Indicators

    1.4.4 Definition of the LED Indicators The SXblue receiver features diagnostic LEDs that provide a quick indication of the receiver’s status. These LEDs are visible on the front panel display (see Figure 1-16). Figure 1-16 SXblue Series Front Panel The five diagnostic LEDs visible on the front panel display of the SXblue provide the following information: SXblue Series User Manual...

  • Page 41: Gis Field Data Collection And Datum Considerations

    Table 1-5 LED Indicators Definitions Color Function Power – when the SXblue receiver is powered, this LED will illuminate. When battery is low, the Power indicator will start blinking 20 minutes prior to auto shut-down. GPS Lock – once the SXblue receiver achieves a solid GPS lock and computing a valid position, this LED Green will remain illuminated.

  • Page 42: Generic Field Data Collection Software Configuration

    1.4.5.1 Generic Field Data Collection Software Configuration The software that will be used for collecting GPS data should accept standard NMEA messages. As mentioned in section 1.3.1, the SXblue receiver output by default eight (8) NMEA sentences: GGA, GSA, GST, GSV, VTG, RMC, RRE and ZDA all at 1Hz (once every second) on the Bluetooth and USB ports.

  • Page 43: General Guidelines For Sub Meter Gis Field Data Collection

    1.4.5.2 General Guidelines for Sub meter GIS Field Data Collection • Proper antenna location is critical for sub-meter positioning. The best location for a GPS antenna is above the head with no obstruction of the sky. A soft hat for the precision antenna is supplied with the SXblue receiver standard packages.
  • Page 44 GNSS Survey Antenna (supplied with the Survey package, but purchasable separately) is recommended primarily because of the larger ground plane and sensibility it offers. • In order to connect to an RTK network a utility called DIP/NTRIP client must be used. Some surveying software already feature a built-in NTRIP client, but many on the market do not.

  • Page 45: What To Know About Atlas Services (Sxblue Platinum Only)

    point at different time of the day to confirm the reliability of the position. In urban canyon environments (tall buildings nearby), performance will depend on the number of satellites in view and the effects of multi-path, if any. Watching (or setting masks in your software for) the differential status of the receiver (Fixed, Float, DGPS, GPS) and the RMS value are of great importance when the highest possible level of accuracy is required from the SXblue receiver.

  • Page 46: Available Software And Utilities

    1.4.6 Available Software and Utilities This section gives a brief overview of the various software and utilities available for the SXblue receiver. Throughout this manual, various menus of some of the utilities are presented to help configure and monitor the receivers for specific applications.

  • Page 47: Rinex Converter

    1.4.6.5 RINEX Converter RINEX Converter is a free utility to convert SXblue receivers' raw binary data to standard RINEX format. Data can be collected with the SXblue Config software or any other software capable of recording binary files. Available for Windows 2000/XP/7/8/10 (32-bit and 64-bit) and for Windows Mobile 6.x.

  • Page 48: Features And Performance

    Features and Performance This chapter describes various operation mode and high-level features of your SXblue receiver. The remaining chapters provide more detailed information on the workings of the product. As mentioned in the previous chapter, if you are new to GPS, SBAS, DGPS, RTK or Atlas®...

  • Page 49: Update Rates

    Keeping in mind that this horizontal performance specification is a real world but ideal scenario test, obstruction of satellites, multipath signals from reflective objects, and operating with poor corrections will detract from the receiver’s ability to provide accurate reliable positions. Sub meter differential performance can also be compromised if the SXblue receiver is using SBAS in a region without sufficient ionospheric map coverage.

  • Page 50: Automatic Tracking And Ranging

    2.2.1 Automatic Tracking and Ranging The SBAS demodulator featured within the SXblue receiver will automatically scan and track the SBAS satellite signals. At time of print, SBAS signals available are WAAS (USA and covering Central and North America), EGNOS (Europe), MSAS (Japan) and GAGAN (India).

  • Page 51: Dgps Radiobeacon (For Sxblue Ii-B)

    Caution – When the map has been downloaded, you may observe a position jump due to the potential difference between the GPS ionospheric model and the ionospheric SBAS map. To minimize the impact of this issue on your use of the SXblue receiver, you may wish to wait up to five minutes before using the receiver.

  • Page 52: Radiobeacon Range

    2.3.1 RadioBeacon Range The broadcasting range of a 300 kHz beacon is dependent upon a number of factors, including transmission power, free space loss, ionospheric state, surface conductivity, ambient noise, and atmospheric losses. The strength of a signal decreases with distance from the transmitting station, due in large part to spreading loss.

  • Page 53: Single Baseline Rtk And Rtk Networks

    • Choose a location with a clear view of the sky. This is also important for GPS, WAAS, and Atlas signal reception. • Choose a location that is at least three feet away from all forms of transmitting antennas, communications, and electrical equipment, including the SXblue II-B GPS receiver.

  • Page 54: Single Baseline Rtk

    The performance (time to reach a fixed solution and accuracy) of a base/rover RTK setup depends on many factors. Below is a list of the most common ones: • The baseline length. The longer the baseline length the more time required by the rover to fix the ambiguities.

  • Page 55: Rtk Networks

    frequency receiver. The maximum baseline recommended for dual-frequency operations is about 25-30 km. • One limitation of the base/rover setup is the type of radio used. The broadcasting range of a radio is dependent upon a number of factors, including transmission power, free space loss, ionospheric state, surface conductivity, ambient noise, etc.

  • Page 56: Atlas Gnss Global Correction Services (For Sxblue Platinum)

    NTrip is a protocol for streaming differential GPS/GNSS (DGPS/DGNSS) data over the Internet. NTrip is a generic, stateless protocol based on the Hypertext Transfer Protocol HTTP/1.1 and is enhanced for GNSS data streams. NTrip was developed by the German Federal Agency for Cartography and Geodesy (BKG) and the Dortmund University Department of Computer Science.

  • Page 57: Signal Reception

    where the SXblue Platinum, L-band differential satellite receiver, demodulates the data. ® Atlas signal content is not RTCM SC-104, but a proprietary wide-area signal that is geographically independent. With this service, the positioning accuracy does not degrade as a function of distance to a base station, as the data content is not composed of a single base station’s information, but an entire network’s information.

  • Page 58: Automatic Tracking And Performance

    2.5.3 Automatic Tracking and Performance The SXblue Platinum features an automatic mode that allows tracking of the best spot beam if more than one is available in a particular region. The L-band DGPS receiver’s frequency does not need to be adjusted with this function. The SXblue Platinum also features a manual tune mode for flexibility.

  • Page 59: Coast™ And Suretrack™ Technologies

    • Positioning accuracy: Atlas provides competitive positioning accuracies down to 2 cm RMS in certain applications. • Positioning Sustainability: Position quality maintenance in the absence of correction signals, using Hemisphere’s Tracer technology. • Convergence Time: Convergence times of 10 – 40 minutes. •...

  • Page 60: Real-Time Differential Options

    the advantages of all the extra GLONASS observations required in tough and challenging conditions. 2.7 Real-Time Differential Options Real-time differential options can be added to your SXblue receiver. These options made available depending installed firmware subscription/activation. See Chapter 3 for more information on firmware architecture and activating options (RTK, Atlas, Multi-GNSS, Multi-Freq, 10Hz, and 20Hz).

  • Page 61: The L-Band Application

    2.7.2 The L-Band Application The SXblue Platinum standard configuration is GPS/SBAS with MFA application installed. Atlas L-Band can be activated with subscription and then comes automatically with Multi-GNSS, RTK and Multi-Frequency option. 2.7.3 RTK Differential options RTK differential is an application to use and apply correction from reference station.

  • Page 62: Evaluating The Sxblue Performance

    Various types of post-processing can be performed: Static, semi-kinematic, kinematic, code-phase, phase, using L1 only or L1/L2, GPS only or GNSS, with a local base station or using PPP. Refer to the post-processing software documentation for recommended occupation times to achieve the highest possible performance.
  • Page 63 For example, if Product A after test results in an accuracy of 90 cm 95% (R95) and you want to compare this to Product B that has a sub-meter horizontal RMS specification, select the value from where the ‘R95’ row and the ‘RMS’ column intersect (to convert to RMS).

  • Page 64: Communication

    performance of the SXblue is not compromised, giving you the best performance possible. • Make sure that there is sufficient length of the antenna extension cable available in order to be able to connect it to the SXblue enclosure. If you require assistance in developing a test setup or procedure for evaluating the SXblue receiver, please contact SXblue GPS.

  • Page 65: Figure 2-3 Rs-232 Connector Pin-Out

    previous chapter, the SXblue receiver does not require pairing (or bonding, or authentication) using passwords (or pass codes, passkeys, etc). • The USB port (not available with SXblue 12/24 volts) on the back panel is of Type B and requires a driver to be installed on the computer in order to emulate a serial port.

  • Page 66: Event Marker, 1 Pulse Per Second And 5Vdc Power

    Note - For successful communications, the baud rate of the SXblue receiver serial ports must be set to match that of the devices to which they are connected. Technical Reference Manual describes the $JBAUD baud rate change command. 2.10.3 Event Marker, 1 Pulse per Second and 5Vdc Power The 1PPS, EM and 5Vdc Power are available upon request on the DB-9 connector when ordering the SXblue receiver.

  • Page 67: Environmental Requirements

    receiver will supply up to 100mA to power the external device. Care must be taken not to short-circuit this input. 2.11 Environmental Requirements The equipment supplied with the SXblue system has specific environmental limits that you should ensure are met when storing and using the system. The SXblue receiver is designed to be stored between -40°C and +85°C.

  • Page 68: Advanced Operations

    Advanced Operations This chapter introduces the general operational features of the SXblue receiver and configuration procedures. 3.1 Communicating with the SXblue receiver The SXblue receiver features three communication ports (except SXblue 12/24 volts) that may be configured independently from each other (Bluetooth, Serial and USB).

  • Page 69: Binary Interface

    The SXblue receiver supports a variety of standard and proprietary NMEA messages. These messages are used to configure the receiver and also contain the required information from the SXblue receiver. You may configure a selection of NMEA 0183 data messages on one port at various update rates (each message has a maximum update rate) and a different selection of NMEA 0183 messages with different rates on the other port.

  • Page 70: Configuring The Sxblue Receiver

    SXblue receiver uses standard (RTCM 2.x and RTCM 3.x) and proprietary (ROX, CMR, CMR+) real-time correction messages to achieve cm-level RTK. In very simple words here are the various version of RTCM SC-104 and their usage: • RTCM 2.0 - Pseudorange corrections for GPS L1 C/A code only. Usually used for sub meter positioning.

  • Page 71: Using Sxblue Config

    allows you to turn messages on and off as you require as well as setting their output rates. Our free utility SXblue Config are available to configure the SXblue receiver, send commands, query the receiver, view the receiver’s output stream, and activate options under subscription.
  • Page 72 From SXblue Config, select the About tab (last tab) from the application to see all the information regarding the receiver including actual activation (subscription) Firmware version. These information are required to check serial number, firmware version, update available and installed activations. SXblue Series User Manual...
  • Page 73 The Position tab (first tab) shows the status of the SXblue receiver. Default SBAS solution should be use as input differential correction source or DGPS RadioBeacon (SXblue II-B). The Diff Requested can be change at the RX Config tab. The Satellites tab shows the tracking status of the SXblue receiver. See illustration next page.
  • Page 74 SXblue Series User Manual...

  • Page 75: Activating An Option

    From Log – Messages tab, it is possible to log RAW data for post processing. 3.2.2 Activating an Option These instructions explain how to activate an option on SXblue receiver. The subscription code must be purchased from SXblue GPS or an authorized representative.
  • Page 76 $JK,SHOW The information shown in the green box are required to order new option or activation for the receiver. Copy the displayed responses and send them to info@sxbluegps.com with a message requesting an activation subscription code. Once you receive the activation code from SXblue GPS Inc., use the same Terminal tab from the application SXblue Config to enter (send button) the activation code.

  • Page 77: Dgps Radiobeacon Operation (Sxblue Ii-B Gps)

    3.3 DGPS RadioBeacon Operation (SXblue II-B GPS) The SXblue II-B GPS may be operated in Automatic mode, Manual Tune or Database mode. In Automatic mode, the receiver will identify and tune to the station providing the strongest DGPS signal using two receiver channels. In Manual mode, you specify the frequency to which the receiver will tune.

  • Page 78: Manual Mode

    signals in the 283.5 to 325.0 kHz band. As this frequency range is a navigation band, it is shared with other navigation aides such as non- directional beacons used for aviation and marine navigation. Depending on the signals available, initial acquisition may take less than 15 seconds for a strong beacon station, from a cold start or up to a couple minutes if a beacon site is weak relative to other signals.

  • Page 79: Evaluating Performance

    This operating mode has been added to the SXblue II-B GPS in order to be compliant with the specification IEC 61108-4 for ship borne DGPS maritime radio beacon receiver equipment. The basic operation is outlined below. 1. The receiver will determine the 10 closest stations after computing a valid position.

  • Page 80: Table 3-2 Date Codes And Enabled Applications

    optimum location with respect to beacon reception. The SNR is available in the $CRMSS and $PCSI,1 NMEA messages described in the Technical Reference Manual. The SNR is also a function of the installation, as it may differ between locations, depending on the amount of local noise at each. The optimum antenna location will be the position where your average SNR is highest.

  • Page 81: Troubleshooting

    4. Troubleshooting 4.1 Troubleshooting Checklist Use the following checklist to troubleshoot anomalous SXblue system operation. The following table provides a problem symptom, followed by a list of possible solutions. Table 4-1 Troubleshooting Symptom Possible Solution • Receiver fails to power Recharge battery pack and try again after 15 minutes of charge •...

  • Page 82: Using The Leds To Troubleshoot

    4.2 Using the LEDs to Troubleshoot The SXblue receiver has 5 LED indicator lights that serve as status indicators. The first 4 lights should all be illuminated solid (non-blinking) when the receiver is powered on and has a valid GPS and differential solution. The last LED (furthest to the right) should only be illuminated solid if you are connected using Bluetooth communications.

  • Page 83: Table 7-2 Led Functions

    Table 4-2 LED Functions Power LED: (Red) This LED should be on (solid) once power is applied to the receiver. This is the only LED that is not under GPS computer control. Once the battery voltage reaches a certain threshold, this LED will start blinking (roughly 15-20 minutes prior to auto shutdown).
  • Page 84 Appendices SXblue Series User Manual...

  • Page 85: Appendix A - Interface

    Appendix A - Interface This appendix provides information on interfacing the main aspects of your SXblue receiver. The main purpose of the SXblue is to provide differentially corrected position and related information to a data logging or navigation device in the standard NMEA format.

  • Page 86: Figure B-3 Rtcm Data Input To Serial Port

    Note - For successful communication, the baud rate of the SXblue port must be set to match that of the data logging or monitoring device. The SXblue receiver only supports an RS-232C voltage level serial port. Refer to Technical Reference Manual for instructions related to setting the SXblue baud rate with the $JBAUD command.

  • Page 87: Appendix B - Introduction To Gnss And Dgps Services

    Appendix B - Introduction to GNSS and DGPS Services This chapter provides a brief overview of GPS, differential GPS, Space Based Augmentation Systems (SBAS) such as WAAS / EGNOS / MSAS / GAGAN. The United States Department of Defense (DoD) operates a reliable, 24 hour a day, all weather Global Positioning System (GPS).
  • Page 88 In order to maintain a strategic advantage, the US DoD used to artificially degrade the performance of the SPS so that the positioning accuracy was limited to 100 meters 95% of the time. This intentional degradation was called Selective Availability (SA). The effect of SA has been turned to zero since mid-2000, and has been officially ‘turned off’...
  • Page 89 The SXblue receiver also uses an RTK solution option which allows cm level field data collection, precise guidance and stake-out applications. Conventional Real-Time Differential The majority of GPS navigation and positioning uses this form of positioning. Conventional real-time differential techniques are more robust in their usage and versatility than post-processing or RTK solutions.
  • Page 90 correction services, including many private reference stations and DGPS beacon systems. The SXblue receiver supports this correction protocol via either of its communication ports. In addition to the RTCM standard, the Radio Technical Commission for Aeronautics has a differential service intended for wide area correction services, designated RTCM SC-159.
  • Page 91 considerable, such as when using 300 kHz DGPS radiobeacons. Consequently, some of the errors associated with GPS at the base station differ somewhat from those at the remote user’s location. This spatial decorrelation of errors can result in a relative position offset from the absolute coordinates of the remote receiver. This offset may be as much as one meter for every 100 km (62 miles) between the base station and remote receiver.
  • Page 92 can lead to an incompletely corrected error source that could degrade positioning accuracy with increased distance from the base station. SBAS systems (WAAS, EGNOS, MSAS, GAGAN, etc) use a different approach, using a network of reference stations in strategic locations to take measurements and model the real-time ionosphere.
  • Page 93 GPS antenna. Certain precautions will minimize GPS antenna sensitivity to these reflected signals. Operating away from large reflective structures such as buildings or using special antennas and GPS equipment can help to reduce the impact of multipath. For most consumer-level applications, a small amount of multipath is tolerable.
  • Page 94 In Japan, the MTSAT Satellite-based Augmentation System (MSAS) has been deployed by the Japan Civil Aviation Bureau (JCAB). Successful launches of MTSAT-1R and MTSAT-2 were followed by system integration for MSAS ground system and MTSATs by transmitting test signal from MTSATs. Purposes of test signal transmission were to optimize system performance and then to verify that augmentation information meets safety and performance requirements.

  • Page 95: Figure C-1 Waas Ground Segment (End Of 2007)

    • GPS satellite timing errors • GPS satellite orbit errors Figures B-1 and B-2 show the ground segments of the WAAS and EGNOS systems, respectively. In 2007, a total of 13 monitoring stations have been added to the existing WAAS network, increasing the ionospheric coverage for this SBAS constellation.
  • Page 96 Figure B-2 EGNOS Ground Segment (2010) To enhance the information provided by SBAS, the SXblue receiver has a unique ability to extrapolate the ionospheric information beyond the broadcast information. This feature increases the usable geographic coverage area of a SBAS system. Signal Information A SBAS transmits correction data on the same frequency as GPS from a geostationary satellite (the space segment), allowing the use of the same receiver...

  • Page 97: Figure C-3 Worldwide Sbas Coverage

    the horizon. Fortunately, the COAST Technology helps alleviate this problem by maintaining system performance when SBAS signal loss occurs for extended periods of time. More information on COAST is provided in Section 2.6. When using SBAS correction data, the SXblue receiver is able to provide you with the azimuth and elevation of the SBAS available satellites via a NMEA command to aid in determining their position with respect to the built-in antenna.

  • Page 98: Figure C-4 Worldwide Sbas Ionospheric Coverage

    Figure B-4 shows the ionospheric coverage for each of the SBAS constellations. For WAAS, EGNOS, MSAS and GAGAN the grids shown are actual typical grids recorded with an SXblue receiver (with no extrapolation). SDCM EGNOS WAAS MSAS GAGAN Figure B-4 Worldwide SBAS Ionospheric Coverage Table B-1 Worldwide SBAS Constellation (December 2012) SBAS NMEA...

  • Page 99: Figure C-5 Broadcast And Extrapolated Ionospheric Correction Map

    Note - The satellite elevation angle lowers with increasing distance away from the equator and from the satellite’s longitude. Although a good amount of signal coverage is shown in Northern latitudes for both WAAS and EGNOS, it may not be usable due to its low elevation angle and the potential for it to be obstructed.

  • Page 100: Appendix C - Resources

    Appendix C - Resources Reference Documents National Marine Electronics Association, National Marine Electronics Association (NMEA 0183) Standard for Interfacing Marine Electronic Devices, Version 2.1, October 15, NMEA 1995, PO Box 50040, Mobile Alabama, 36605 USA, Tel: +1- 205-473-1793, Fax: +1-205-473-1669 Radio Technical Commission for Maritime Services, RTCM Recommended Standards for Differential NAVSTAR GPS...
  • Page 101 FAA WAAS Web Site This site offers general information on the WAAS service provided by the U.S. FAA. http://www.faa.gov/airports_airtraffic/technology/waas/ GNNS Services: http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techo ps/navservices/gnss/ For realtime WAAS satellite corrections and performance: http://www.nstb.tc.faa.gov/index.htm To subscribe to the SatNav newsletter notification: http://www.faa.gov/help/subscribe/ ESA EGNOS Web Site This site contains information relating to past performance, real-time performance, and broadcast schedule of EGNOS.
  • Page 102 Atlas Web Site https://www.atlasgnss.com/ Finding Satellite Elevations The following web page allows computing elevations of satellites above horizon from any location in the world: http://www.lyngsat.com/ (Java in browser should be enabled) WAAS PRN 133: http://www.lyngsat.com/tracker/galaxy19.html (same location as...) WAAS PRN 135: http://www.lyngsat.com/tracker/galaxy12.html (same location as...)
  • Page 103 Solar and Ionospheric Activity Web Sites The following sites are useful in providing details regarding solar and ionospheric activity: http://iono.jpl.nasa.gov//index.html http://www.spaceweather.com http://www.n3kl.org/sun/noaa.html GPS, GIS and Survey Related Magazines GPSWorld Magazine: http://www.gpsworld.com/ GPSWorld Survey/Construction News: http://sc.gpsworld.com/gpssc/ GIM International: http://www.gim-international.com/ POB Magazine: http://www.pobonline.com/ Direction Magazine: http://www.directionsmag.com/...

  • Page 104: Index

    Index Proximity, 89 Differential Corrections, 88 5V PWR, 64 Differential GPS (DGPS), 88 5Volt DC Output (PWR), 65 EGNOS, 92 Accuracy, 46, 89, 91 Event Marker, 64 Applications Event Marker Input (EM), 65 activating, 74 Features, 46 Battery Field Data Collection charger, 18 configuration, 40 contact, 17...
  • Page 105 Serial Port, 63 Setting up for Submeter Work, 32 MSAS, 93 SNAS, 93 Multipath, 91 SXBlue Config, 44 SXBlue Mirror, 44 SXBlue RTN, 44 NMEA 0183, 62, 66 SXBlue Server, 44 System Overview, 16 One Pulse per Second (1PPS), 64 Temperature, 65 Troubleshooting, 80 Tune Mode...
  • Page 106 Revision history: Rev 1.1 March 2008 Updated SBAS information in Appendix C Rev 1.2 November 2008 Section 4.6 updated with proper Auto-Dif command sets Updated GAGAN information in Appendix C New default Baud rate for Bluetooth now set to 57600 (sec 1.3.1, 1.4.3.1, 4.2.7, 4.3.6, 6.4) Update datum info SBAS to use updated ITRF2000 (sec 1.4.3.1) Update RTK commands.
  • Page 107 WWW.SXBLUEGPS.COM...

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