# Trimble GFX-750 / GFX-1260 / CFX-750

Connect a **Trimble GFX-750**, **GFX-1260**, or **CFX-750** precision agriculture display to RTKdata.com for centimeter-level RTK positioning.

{% hint style="danger" %}
**Critical:** When configuring the GFX-750 or GFX-1260, you must select **"Internet RTK"** as the correction type — NOT "VRS" or "Network RTK". Selecting the wrong type will prevent the connection from working.
{% endhint %}

## Key capabilities

| Feature                 | Details                                                                    |
| ----------------------- | -------------------------------------------------------------------------- |
| **Compatible displays** | GFX-750, GFX-1260, CFX-750                                                 |
| **GFX-750 / GFX-1260**  | Built-in NTRIP client via Settings > GNSS Configuration > Corrections      |
| **CFX-750**             | Requires external modem (Raven RV50 or DCM-300) — no built-in NTRIP client |
| **NAV controller**      | RTK activation required on NAV-500 or NAV-900                              |
| **Compatible guidance** | EZ-Pilot Pro, Autopilot                                                    |
| **Correction type**     | Internet RTK (not VRS, not Network RTK)                                    |
| **Correction format**   | RTCM 3.x via NTRIP                                                         |

## Requirements

* **Trimble GFX-750 or GFX-1260** display with built-in modem, **or** Trimble CFX-750 with an external NTRIP modem (Raven RV50 or DCM-300)
* **NAV controller:** NAV-500 or NAV-900 with **RTK activation**
* **Internet connection:** Built-in cellular modem (GFX series) or external modem (CFX-750)
* **RTKdata account:** Active subscription with NTRIP 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 %}

## GFX-750 / GFX-1260 setup (built-in NTRIP)

{% stepper %}
{% step %}

#### Verify RTK activation

1. On the GFX display, navigate to **Settings** > **GNSS Configuration**.
2. Confirm that **RTK** is listed as an available correction option.
3. If RTK is not available, the NAV controller (NAV-500 or NAV-900) requires RTK activation. Contact your Trimble dealer.
   {% endstep %}

{% step %}

#### Open correction settings

1. Navigate to **Settings** > **GNSS Configuration** > **Corrections**.
2. Select **Internet RTK** as the correction type.

{% hint style="danger" %}
You **must** select **"Internet RTK"**. Do NOT select "VRS" or "Network RTK" — these are different connection modes that will not work with RTKdata.com's standard NTRIP caster.
{% endhint %}
{% endstep %}

{% step %}

#### Select NTRIP as the connection method

1. Under Internet RTK, select **NTRIP** as the connection method.
2. This opens the NTRIP configuration fields.
   {% endstep %}

{% step %}

#### Enter RTKdata.com NTRIP settings

Fill in the NTRIP connection fields:

{% 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`
  {% 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`
  {% 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`
  {% endtab %}
  {% endtabs %}

{% hint style="warning" %}
Type `AUTO` manually in ALL CAPS. Do not browse the source table — enter the mountpoint name directly.
{% endhint %}
{% endstep %}

{% step %}

#### Connect and verify RTK status

1. Save the settings and initiate the NTRIP connection.
2. Monitor the GNSS status indicator on the GFX display:

| Status               | Meaning                                                             |
| -------------------- | ------------------------------------------------------------------- |
| **Autonomous / GPS** | Basic satellite fix. No corrections applied.                        |
| **Float**            | Correction data arriving and being processed.                       |
| **RTK Fixed**        | Centimeter-level accuracy achieved. Ready for precision operations. |

3. Convergence to RTK Fixed typically takes **30–90 seconds** with clear sky visibility.
   {% endstep %}
   {% endstepper %}

## CFX-750 setup (external modem required)

The CFX-750 is an older display that does not have a built-in NTRIP client or cellular modem. An external modem is required to receive corrections from RTKdata.com.

{% stepper %}
{% step %}

#### Connect an external NTRIP modem

1. Connect a Raven RV50, DCM-300, or similar NTRIP modem to the CFX-750's correction input port.
2. Power on the modem and verify cellular connectivity.
   {% endstep %}

{% step %}

#### Configure NTRIP on the external modem

1. Open the modem's configuration interface (web browser or on-screen menu).
2. Enter the same RTKdata.com NTRIP settings from the regional tabs above.
3. Set the modem's output to forward RTCM3 corrections to the CFX-750.
   {% endstep %}

{% step %}

#### Verify RTK on the CFX-750

1. On the CFX-750 display, check the GNSS status.
2. The display should progress from GPS to Float to RTK Fixed as corrections are received.
3. If the display does not show RTK, verify that RTK activation is enabled on the NAV controller.
   {% endstep %}
   {% endstepper %}

## Vertical reference (heights)

{% hint style="info" %}
Heights from RTKdata.com are **ellipsoidal**. For agriculture applications, this is typically sufficient since auto-steer guidance uses horizontal positioning. If you need terrain-relative heights for drainage or leveling, apply a local geoid model.
{% endhint %}

## Troubleshooting

| Problem                                               | Cause                               | Fix                                                                                                                |
| ----------------------------------------------------- | ----------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| RTK not available in correction settings              | NAV controller not activated        | Contact your Trimble dealer to activate RTK on the NAV-500 or NAV-900.                                             |
| Connection fails with "VRS" or "Network RTK" selected | Wrong correction type               | Change the correction type to **Internet RTK**. This is the correct setting for RTKdata.com.                       |
| No internet connection (GFX)                          | Built-in modem has no SIM or signal | Verify the GFX display's internal modem has an active SIM card and cellular signal.                                |
| No internet connection (CFX-750)                      | External modem not connected        | Verify the external modem is powered, has a SIM card, and shows cellular connectivity.                             |
| Authentication error                                  | Wrong credentials                   | Use the username and password from your RTKdata dashboard, not your website login. Credentials are case-sensitive. |
| Stuck on Float                                        | Poor sky visibility                 | Move to an open area away from buildings, tree lines, and power lines.                                             |
| Stuck on Float                                        | NAV controller issue                | Restart the NAV controller. If Float persists, verify RTK activation status.                                       |
| Mountpoint error                                      | Wrong capitalization                | Type `AUTO` in ALL CAPS.                                                                                           |

## Tips

* **"Internet RTK" is the correct setting** — this is the most common configuration mistake on Trimble GFX displays. "VRS" and "Network RTK" are different protocols.
* **GFX-750 vs GFX-1260:** The setup process is identical. The GFX-1260 has a larger screen and updated processor, but NTRIP configuration follows the same menu path.
* **CFX-750 users** need an external modem. The RV50 cellular modem is the most common choice and has a straightforward web-based configuration interface.
* **EZ-Pilot Pro and Autopilot** guidance systems work seamlessly with RTK corrections — no additional configuration is needed on the guidance hardware once RTK is active on the display.
* **Keep firmware updated** on the GFX display and NAV controller for best RTK performance and compatibility.
* **Save your configuration** after setup. If the display is reset or swapped, you can re-enter settings quickly by referencing your saved configuration.