Trimble GFX-350 / XCN-750 (Precision-IQ)

These steps connect a Trimble GFX-350 / XCN-750 (Precision-IQ) to the Premium Positioning correction network over NTRIP, using Precision-IQ. They assume you already have your NTRIP credentials.

Before you start

• Your NTRIP username and password, from your Premium Positioning welcome email or your account on the customer portal.

• Precision-IQ.

• A working internet connection on the controller or phone.

• A clear view of the sky at the point you are measuring.

Network settings

These are the same for every Premium Positioning customer. Only your username and password are unique to you.

• Server or host: rtkpremium.xyz

• Port: 2101

• Mountpoint: COMMON

• Protocol: NTRIP

Steps

1. Get your Premium Positioning NTRIP credentials ready: You'll enter corrections details on the display, including a username and password unique to your account - find these in your Premium Positioning welcome email. Don't type anyone else's, and don't guess; if you can't find the email, contact Premium Positioning before continuing.

2. Get the display online (Wi-Fi or cellular modem): NTRIP corrections arrive over the internet, so the display needs a live data connection. From the launcher/Settings, open Wi-Fi Settings and join a hotspot or network, or make sure your connected cellular modem has data/signal. Confirm internet before going further. (Wording varies by display/firmware.)

3. Open the GNSS tile: On the Precision-IQ Home screen, tap the GNSS tile - it shows your current correction service and satellite status. By default the display ships set to Autonomous correction.

4. Tap Edit to open the GNSS Edit screen: On the GNSS details screen tap Edit. The Corrections option is selected by default - where you change the correction service.

5. Open the Correction Service list: Tap Correction Service (Correction Services on some firmware). A pop-up list of correction sources appears, with Autonomous selected by default.

6. Select RTK as the correction source: Tap RTK. (If your account is licensed for a network/VRS RTK product, you may instead pick a VRS option - the internet/NTRIP fields are entered the same way. RTK/VRS usually requires a licence/unlock on the controller; if RTK is greyed out or missing, contact Premium Positioning or your Trimble reseller.)

7. Choose Internet / NTRIP as the data source: After selecting RTK, open the RTK options and set the connection method/data source to the internet option (commonly Internet, NTRIP, or Cellular/Modem - not Radio). Exact wording and location vary by display/firmware; if you don't see it, look in the RTK setup/options sub-screen.

8. Enter the caster server address: In the server / host / IP address field, enter: rtkpremium.xyz (field may be labelled Server, Server Name, Host, NTRIP Server or IP Address).

9. Enter the port: In the Port field, enter: 2101

10. Enter your NTRIP username and password: In the username and password fields (often Name/User and Password), enter the per-customer NTRIP login from your welcome email - your own; never reuse another customer's or invent them.

11. Load the source table and select the mountpoint: After server, port and login are entered, the display retrieves the available mountpoints (source table). Select: COMMON. If the list doesn't populate, re-check the server, port, internet, and credentials, then retry. (Protocol is standard NTRIP - no extra setting normally needed.)

12. Save and return to Home: Confirm/apply the RTK settings, then tap Home. The display begins connecting and requesting corrections; allow a short time for the stream to start.

13. Confirm RTK Fixed: Open the GNSS tile (or the status-bar correction indicator) and confirm the status reads RTK Fixed (not Float/DGPS/Autonomous), with a green GNSS status - cm-level corrections are live. If it stays Float or won't fix, recheck internet/data signal, the server/port/mountpoint, and your credentials; contact support if it persists.

If the fix will not hold

Exact on-screen labels (Correction Service vs Correction Services, Server vs Host vs IP Address, and the Radio-vs-Internet/NTRIP data-source toggle) differ between the GFX-350, XCN-750 and other displays and across Precision-IQ firmware - match the closest field on your screen. RTK/VRS usually requires a licence/unlock on the NAV-500/NAV-900 controller; if RTK is unavailable, contact Premium Positioning or your Trimble reseller.

For more, see RTK corrections troubleshooting and Fix inconsistent RTK accuracy on site.

Need help

Support is available 24/7. Include your receiver model, the mountpoint, the solution status, and the correction age when you get in touch.