# Septentrio mosaic-X5

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

{% hint style="info" %}
Don't have an RTKdata.com account yet? 👉 [Start 30-day Free Trial](https://rtkdata.com/try-rtk-corrections-free-for-30-days/) or [View Pricing](https://rtkdata.com/pricing/)
{% endhint %}

## 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.

{% stepper %}
{% step %}

#### 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.
   {% endstep %}

{% step %}

#### 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:

{% tabs %}
{% tab title="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`
  {% endtab %}

{% tab title="Europe" %}

* **Host (domain):** `eu.rtkdata.com`
* **Host (IP fallback):** `3.73.41.96`
* **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`
  {% endtab %}

{% tab title="Australia" %}

* **Host (domain):** `aus.rtkdata.com`
* **Host (IP fallback):** `54.206.56.130`
* **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`
  {% endtab %}
  {% endtabs %}

Also configure:

* **NMEA GGA:** **Enabled** / **Auto**

{% hint style="warning" %}
Only these four mountpoints are valid. Always use **ALL CAPS**.
{% endhint %}

4. Click **OK** or **Apply**.
   {% endstep %}

{% step %}

#### 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**.
   {% endstep %}
   {% endstepper %}

***

## Method 2: RxTools (RxControl + DataLink)

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

{% stepper %}
{% step %}

#### 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.
   {% endstep %}

{% step %}

#### 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.
   {% endstep %}

{% step %}

#### 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.
   {% endstep %}

{% step %}

#### Verify

1. DataLink shows data flowing in both directions (corrections in, GGA out).
2. RxControl's position display shows solution progression toward **RTK Fixed**.
   {% endstep %}
   {% endstepper %}

## 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)

{% hint style="info" %}
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**.
{% endhint %}

## 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.