GeoMax Zenith40 / Zenith05

These steps connect a GeoMax Zenith40 / Zenith05 to the Premium Positioning correction network over NTRIP, using X-PAD Ultimate (Android). 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.

• X-PAD Ultimate (Android).

• 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. Power on the receiver and the Android controller: Switch on your GeoMax Zenith40 / Zenith05 and mount it on the pole. Power on your Android controller (data collector or phone/tablet) and make sure it has working mobile data or Wi-Fi, because corrections are delivered over the internet. Open X-PAD Ultimate.

2. Open or create a job, then go to instrument settings: Open or create a job. From the main menu open Settings, then the section that manages instruments - typically 'GNSS & Total stations' (some versions 'Devices' or 'Instruments'). This is where rover profiles are created and selected.

3. Add a new GNSS Rover profile: Choose Add (the + or 'New' button), then select the GNSS Rover profile type. Pick GeoMax as the brand and your model (Zenith40 or Zenith05). Give the profile a recognisable name. Button wording varies slightly by version - choose the option that creates a new GNSS rover instrument.

4. Connect to the receiver over Bluetooth: On the connection page choose Bluetooth and tap to search. Select your Zenith40 / Zenith05 (its serial usually appears in the name) and confirm to pair/connect. Wait until X-PAD reports it connected. If it doesn't appear, confirm Bluetooth is on and the receiver is powered.

5. Open the RTK / corrections page and set the data link to internet: After the receiver connects, open the RTK (corrections / data link) page. For the correction source choose to receive over the internet using the controller's connection - commonly 'Internet', 'GPRS', or 'Internet of the controller' / 'External GPRS controller'. This routes the NTRIP stream through your Android device's data rather than a modem or radio. Wording varies by version.

6. Choose NTRIP as the protocol: With the internet data link selected, set the correction protocol to NTRIP (not a direct IP/TCP or radio link), so X-PAD connects to an NTRIP caster and requests a mountpoint.

7. Add the NTRIP server (host and port): Open the list of NTRIP servers and choose Add / New. Enter the caster - Host / Server: rtkpremium.xyz, Port: 2101 - the same for every customer. Save the server entry.

8. Enter YOUR NTRIP username and password: In the same NTRIP server form enter the UserID (username) and Password - personal to your account, from your welcome email. Do not share them; if you don't have them, contact support before continuing.

9. Download the source table (mountpoint list): Use the button that retrieves the streams from the caster - usually 'Connect', 'Get source table', or the list/refresh icon next to the mountpoint field. X-PAD downloads the source table. If nothing loads, re-check host, port, credentials, and that the controller has internet.

10. Select the COMMON mountpoint: From the source table, select COMMON - the correction stream all Premium Positioning customers use. Confirm so the entry stores Host rtkpremium.xyz, Port 2101, Mountpoint COMMON, Protocol NTRIP, plus your UserID/Password.

11. Apply and start the rover: Confirm/accept the RTK configuration to apply it and start the rover. X-PAD connects to the caster and feeds corrections to the Zenith. The first connection can take a moment.

12. Confirm RTK Fixed before surveying: Open the GPS Status (satellite/position status) page or check the solution indicator on the survey screen. Wait until it shows 'Fixed' (RTK Fixed) - not Float/DGPS/Autonomous - meaning cm-level accuracy. Only measure once you see RTK Fixed. If it stays Float, recheck the username/password, that COMMON is selected, sky view, and your data connection.

If the fix will not hold

The controller must have a live mobile-data or Wi-Fi connection. Menu/button labels ('GNSS & Total stations', 'Internet of the controller' / 'External GPRS', 'Get source table') can differ slightly between X-PAD Ultimate versions - choose the closest match.

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.