Septentrio mosaic-X5 NTRIP Setup: RTK Corrections

Configure the Septentrio mosaic-X5 for RTK corrections via NTRIP using the web interface or RxTools DataLink. Step-by-step setup for advanced GNSS users.

The Septentrio mosaic-X5 is a high-precision, multi-constellation, multi-frequency GNSS receiver module designed for professional and industrial applications. It tracks all current and planned GNSS constellations (GPS, GLONASS, Galileo, BeiDou, NavIC, QZSS, SBAS) across all available frequencies. The mosaic-X5 is aimed at system integrators, autonomous vehicles, precision agriculture, and advanced survey applications where reliability and accuracy are critical. It features a built-in web interface, NTRIP client, and AIM+ interference mitigation technology.

This guide is intended for advanced users who are comfortable with receiver configuration via web interfaces or desktop software.

Requirements

• Septentrio mosaic-X5 receiver module on an evaluation board or integrated into your system

• Multi-frequency GNSS antenna connected to the receiver's antenna input

• USB cable to connect the receiver to your computer

• Computer with a web browser (Chrome, Firefox, Edge) or Septentrio RxTools software installed

• Internet connection — either through the computer (using RxTools/DataLink) or via the receiver's Ethernet port (if available on your board)

• RTKdata.com account with active RTK credentials

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Method 1: Web Interface (Recommended)

The mosaic-X5 has a built-in web interface that is the simplest way to configure NTRIP. No software installation required.

1

Connect and access the web interface

1. Connect the mosaic-X5 to your computer via USB.

2. The receiver appears as a network adapter. Open a browser and go to http://192.168.3.1 (default address).

3. The mosaic-X5 web interface dashboard loads, showing satellite tracking and position status.

2

Configure the NTRIP client

1. In the web interface, navigate to Communication → NTRIP Client.

2. Click New to create a new NTRIP connection.

3. Fill in the settings. Select the tab for your region:

North America

• Host (domain): rtk.rtkdata.com

• Host (IP fallback): 13.56.117.10

• Port: 2101

• Username / Password: From RTK Credentials in the internal dashboard (not website login)

• Mountpoint (ALL CAPS): AUTO (recommended) — or AUTO_WGS84, AUTO_ITRF2020, AUTO_ITRF2014

Europe

Australia

Also configure:

• NMEA GGA: Enabled / Auto

Only these four mountpoints are valid. Always use ALL CAPS.

1. Click OK or Apply.

3

Verify connection

1. The NTRIP Client status in the web interface changes to Connected.

2. Navigate to the Position page to monitor the solution type.

3. Watch for progression: Autonomous → DGPS → RTK Float → RTK Fixed.

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Method 2: RxTools (RxControl + DataLink)

Use this method if you cannot access the web interface or need more granular control over data routing.

1

Launch RxControl

1. Install RxTools from Septentrio's support website.

2. Connect the mosaic-X5 via USB.

3. Open RxControl and connect to the receiver on the appropriate COM port.

4. Verify satellite tracking on the RxControl skyplot.

2

Configure NTRIP via DataLink

1. Open DataLink (included in RxTools).

2. Create a New Serial Connection linked to the mosaic-X5 COM port.

3. Create a New NTRIP Client Connection with the settings for your region (same host, port, username, password, and mountpoint as shown in the tabs above).

4. Link the NTRIP connection to the serial connection (enable bidirectional data flow).

5. Click Connect on both connections.

3

Enable NMEA GGA output

1. In RxControl, go to Communication → Output → NMEA Output.

2. Enable GGA output on the USB1 port at 1-second intervals.

3. This ensures the receiver sends its position to RTKdata.com so corrections are calculated for your location.

4

Verify

1. DataLink shows data flowing in both directions (corrections in, GGA out).

2. RxControl's position display shows solution progression toward RTK Fixed.

What to expect

• Web interface dashboard: Real-time satellite skyplot, position quality, differential age, and NTRIP status.

• Convergence time: The mosaic-X5 is extremely fast. Expect Float in 5–15 seconds and Fix in 15–45 seconds with good sky and antenna.

• Accuracy at Fix: 0.6 cm + 0.5 ppm horizontal, 1 cm + 1 ppm vertical (receiver specification with quality antenna).

• AIM+ anti-jamming: The mosaic-X5 actively mitigates RF interference, making it robust in environments near cellular towers or other RF sources.

Vertical reference (heights)

Heights from RTKdata.com are ellipsoidal by default. The mosaic-X5 can apply a geoid model internally — upload a geoid grid via the web interface under Position → Geoid.

Troubleshooting

Problem	Cause	Fix
Web interface not loading at 192.168.3.1	USB driver not installed or IP conflict	Install the Septentrio USB driver. Check that your computer's network adapter for the mosaic shows the correct subnet.
NTRIP Client shows "Authentication error"	Wrong credentials	Use credentials from your RTKdata.com RTK dashboard, not website login.
No corrections received	GGA not enabled	Enable NMEA GGA output. Without GGA, RTKdata.com cannot determine your position to generate corrections.
COM port conflict between RxControl and DataLink	Both tools trying to use the same port	Use separate COM ports: one for RxControl, one for DataLink. The mosaic-X5 exposes multiple virtual COM ports over USB.
Position stuck on Float	Antenna quality or cable issue	Verify antenna connection. Use a survey-grade multi-frequency antenna, not a patch antenna.
Corrections age climbing	Network latency	Use the RTKdata.com server closest to your location (EU, NA, or AUS).

Tips and tricks

• The web interface is the fastest setup path. You can have NTRIP running in under 2 minutes without installing any software.

• Save your configuration using the web interface's Admin → Configuration → Save so NTRIP auto-connects on power-up.

• The mosaic-X5 supports multiple correction streams simultaneously. You can configure a backup NTRIP source for redundancy.

• Use the receiver's built-in Ethernet (on evaluation boards that support it) for a cable-free internet connection, eliminating the need for a computer in the loop.

• For command-line users, you can configure everything via serial commands. The command to add an NTRIP client is snti,NTR1,... — refer to the mosaic-X5 reference guide for full syntax.

• Enable SBF logging on the microSD card for post-processing. Septentrio's SBF format retains full observation data at configurable rates.