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How to configure Septentrio mosaic-G5 P3 and P3H

Introduction

This page is only valid for the  boards based on Septentrio mosaic-G5 P3 and P3H modules like simpleRTK 4 Pro (Septentrio mosaic-G5 P3), simpleRTK 4 Pro Heading (Septentrio mosaic-G5 P3H).
In this guide, we will show how to connect, configure key settings, manage data output, and ensure the modules are operating at their best for your application.

Install Driver and Septentrio RxTools

  1. Connect the GNSS antenna to your receiver. Make sure the antenna has a good view of the sky for testing functionality. Otherwise, you won’t see satellites view and signal.
  2. Connect the receiver to your PC via the USB port labelled as POWER+GPS.
  3. When you connect this product to a PC for the first time, the PC may not recognize it. You will only see a new Hard Disk in your computer. Open it and install the Septentrio driver.
Userguide-simpleRTK3B-driver
  1. After installation is completed, disconnect and reconnect again, your PC will recognize the receiver. This only needs to be done once.
  2. Download the RxTools Software suite and install it for your operating system, we will use Microsoft Windows for this guide. This will install several applications in your computer. For this guide we will use only the RxControl app and its intuitive GUI which allows you to control your Septentrio Receiver, perform data logging and monitor the navigation solution.

Connect to the Receiver

  1. Open the RxControl app and create a new Serial Connection. Press Next.
  1. Specify the computer Serial Port you want to use to connect to your mosaic-G5 receiver and enter a Connection Name. Press Finish.
  1. The RxControl GUI will open and the Status Bar at the bottom will display information about the connection status, with blinking lights confirming the connection with your receiver and data streaming from it.

Send NMEA messages to Xbee Socket

  1. In the main menu go to Communication –> COM port settings.
  1. Set the Baud rate of COM2 at 115200 bps, because most of our communication plug-in works at 115200 bps. Press OK.
  1. In the main menu bar select Communication -> Output settings -> NMEA Output.
  1. At Stream1 choose port COM2 and check your preferred NMEA messages. If you don’t know which ones to choose, we suggest checking GGA, GSA, GSV, RMC and VTG because they are used by most of the applications. Select the interval to 1 second. Configure Stream2 with the exact same parameters as we just did in Stream1 but selecting as port the USB port that was used in step 7 to connect to the board, either USB1 or USB2. Press OK.
  1. In the main menu go to Tools -> Expert Console.
  1. Go to the NMEA tab in the Expert Console. You will observe the output NMEA messages.

Configure as a Rover

  1. Go to main menu Navigation -> Positioning Mode.
  1. Choose Rover at PVT Mode, check All at Rover mode and set Reference Position to Auto. Press OK. Now you have your receiver configured as a Rover.

Examples of configuration files

We provide a variety of configuration files designed for different purposes, such as configuring as a base station, as a rover, sending NMEA messages via Bluetooth or BLE, or connecting to NTRIP correction via 4G.

Configuration File
Rover 1Hz
  • Enable on USB1, COM1, COM3: GGA, GST, GLL, GSA, GSV, RMC, VTG with 1s
 Download
Rover Maximum update rate (20Hz)
  • Change COM1, COM3 to 460kbps
  • Enable on USB1, COM1, COM3: GGA with 10ms
 Download
Send 1Hz full NMEA to Plugin
This configuration allow you to connect the receiver to your mobile device via Bluetooth, BLE, or use radio and other communication plugins on Xbee socket.
  • Enable on COM2: GGA, GST, GLL, GSA, GSV, RMC, VTG with 1s
 Download
Send 1Hz GGA to Plugin
This configuration file allow connection to NTRIP client with VRS mountpoints.
  • Enable on COM2: GGA with 1s
 Download

Get RTK corrections

In order to achieve centimeter/millimeter level accuracy with our GNSS receivers, you should have access to RTK corrections. There are two ways to get RTK correction data.
  • via a NTRIP service
    Pros:
    • Easy to use with just one receiver.
    • No need to set up your own base station.
    • Corrections can be received over the internet.
    Cons:
    • Requires a reliable internet connection.
    • Dependent on the availability of NTRIP services in your region.
    • Subscription fees may apply for using NTRIP services.
  • via a Base-Rover setup.
    Pros:
    • Complete independence from external services.
    • Works well in areas without internet access or NTRIP service.
    • Full control over the accuracy and quality of the corrections.
    Cons:
    • Requires two receivers (one base, one rover).
    • More complex to set up and manage.
    • Base station needs to be in a fixed position for reliable corrections.

NTRIP corrections

  1. You can find third party base stations at RTK Correction Services in your Country. Register and get your server, port, username, password and mount point from your NTRIP corrections provider. We will use them later.
  1. To share your internet connection with the GNSS receiver over USB and receive RTK corrections, go to RxControl main menu Communication -> Network settings…
  1. Activate the Outgoing Internet Access Over USB option. Press OK.
  1. Go to main menu Communication -> RxControl NTRIP Forwarder…
  1. It will bring up the Ntrip Forwarder dialog. Press Edit.
  1. In the Ntrip Settings dialog fill in caster settings: Host, Port, user name and password of the NTRIP account. This data should be provided by the NTRIP service when you register your account. Press OK.
  1. If the NTRIP account credentrials were entered correctly, the Stream drop-down list will become active and the RTK correction Mount Point can be selected. Press Start.
  1. The Status field of the NTRIP Settings dialog should show a successfull connection and corrections data received. After a few minutes the PVT Mode will become RTK Float or Fixed, and you will have now centimeter/millimeter level accuracy in your receiver.

There are three communication plugins which can be used to get access to NTRIP correction, WiFi NTRIP Master, 4G NTRIP Master and Ethernet NTRIP Master. If you want to know more details, check section use a communication plugin to connect to NTRIP Caster.

Revert to factory defaults

  1. Select main menu File -> Show Receiver Configurations…
  1. You can check all the Receiver Configurations available and if they match factory defaults.
  1. You can set the current Mosaic configuration to its default settings from main menu File -> Copy configuration…
  1. Set Source to RxDefault and Target to Current. Press OK.

Log data

  1. While connected to your Septentrio G5 receiver via USB you can use RxTools to log data into your PC drive. Go to main menu Logging -> RxControl Logging…
  1. At the Status tab you will find general information of the status of the logging process and space available at the PC drive.
  1. At the Global tab you will be able to choose the Log Directory to save the logging files, and the Message Types to Log as NMEA standard messages ASCII files and SBF (Septemtrio Binary Format) files, which can be afterwards replayed or converted into other common formats such as RINEX or KML using RxControl.
  1. At the File Naming tab choose Manual File Naming Convention to type manually a common File Name and File Extension for both SBF and NMEA log files, and whether to Split Files After a specified file size or time limit is reached.
  1. The SBF tab is useful if you want to log Rinex files for PPK post-process analysis. Select the SBF file type you want to log, and the corresponding data will be activated accordingly.
  1. At the NMEA tab press Add Stream button to create a new stream, and activate the NMEA messages you want to log, usually GGA, GST, GSV and VTG.
  1. Press Start Logging button to start logging the files, and you will find them in the designed PC drive folder. You can use your preferred tool to analyse the saved NMEA log files, and for SBF log files we recommend using RxTools SBF Analyzer. Press Stop Logging once you are done logging the receiver data.

Firmware upgrade

For simpleRTK 4 Pro board download the latest stable firmware here.
For simpleRTK 4 Pro Heading board download the latest stable firmware here.

  1. Go to main menu File -> Upgrade Receiver using Current Connection…
  1. Press OK in the Close Connection warning message.
  1. The Upgrade Receiver GUI will open… press Next.
  1. Download and uncompress the corresponding firmware zip file for your board, either G5 P3 or G5 P3H, from the links above and press Browse…
  1. Select the firmware file without a failsafe name suffix and press Open.
  1. Check that the firmware upgrade file is set correctly and press Next.
  1. A resume of the Upgrade Receiver settings will be displayed. Press Upgrade.
  1. The Upgrading window will open showing its progress… make sure not to disconnect your receiver while it happens, and if everything worked fine you should have an Upgrade Succeeded message. Press Finish.

Septentrio documentation

If you are seeking detailed information, please refer to our related tutorials and Septentrio documentation provided below:

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