Septentrio Altus NR3
These steps connect a Septentrio Altus NR3 to the Premium Positioning correction network over NTRIP, using Built-in NTRIP client (web UI) or a paired Android/iOS field app. 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.
Built-in NTRIP client (web UI) or a paired Android/iOS field app.
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
Have your credentials ready: You'll need the NTRIP username and password from your Premium Positioning welcome email - unique to your account.
Power on and pick your path: Power up the Altus NR3 and wait for satellite tracking. Two common paths: (A) the receiver's built-in NTRIP client via its web interface, or (B) a paired Android/iOS field app (e.g. Carlson SurvCE/SurvPC, or a generic NTRIP/GIS app) over Bluetooth. Both are covered below.
Path A - connect to the web interface: Connect your phone/laptop to the receiver's Wi-Fi access point (SSID is usually the serial/model name; see the label for the password). Open a browser to http://192.168.20.1 (Wi-Fi) or http://192.168.3.1 (USB/Ethernet). The IP can vary by firmware - check your quick guide if neither loads.
Path A - set the receiver as an RTK rover: In the web interface confirm the receiver is in rover mode with RTK enabled - NTRIP corrections won't promote to RTK Fixed otherwise.
Path A - open the NTRIP client: Go to the Corrections menu and select NTRIP (on some firmware this is under Communication), then click New NTRIP client. Wording varies by firmware - look for the NTRIP / corrections-input section.
Path A - enter the caster and port: Set the caster Host/Server to rtkpremium.xyz and Port to 2101. Ensure the mode/type is NTRIP client.
Path A - enter your credentials: Type YOUR NTRIP Username and Password from the welcome email. Watch for stray spaces or typos - the most common cause of a failed connection.
Path A - select the mountpoint: With the caster details correct, the receiver retrieves the source table. Choose mountpoint COMMON, then OK / Apply. Tip: enable 'save to boot' so it auto-reconnects after power-cycles.
Path B - connect the field app over Bluetooth: In your field app, pair with the Altus NR3 over Bluetooth (in Carlson: Equip > GPS Rover > Comms tab > Bluetooth, then Find/select the NR3). Confirm it's configured as a rover with RTK on.
Path B - choose NTRIP as the correction source: On the rover RTK / correction settings, set the data link to your internet source (internal cellular/GSM or the phone's connection) and Network to NTRIP. Open the NTRIP settings dialog. Labels vary by app - the option you want is the NTRIP network correction source.
Path B - enter caster, port, credentials and mountpoint: Enter Host rtkpremium.xyz, Port 2101, your NTRIP Username/Password, protocol NTRIP. Load/refresh the source table and select COMMON, then save/connect. If no table loads, re-check host, port and internet.
Confirm you have RTK Fixed: Allow a few seconds for corrections to flow. In the web UI the NTRIP link shows active with incoming data and position mode reads RTK fixed. In a field app the status moves Autonomous/DGPS → Float → Fixed. Once you see RTK Fixed with cm accuracy, you're set.
If the fix will not hold
Exact menu names, the Wi-Fi SSID/password, and the web-interface IP differ by firmware and field app - if a label doesn't match, look for the equivalent NTRIP/corrections option or check your unit's quick guide. If you can't get past Float to Fixed, verify credentials (watch for typos/spaces), confirm internet, and that the receiver is in rover mode with RTK enabled.
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.
Last updated
Was this helpful?